Air conditioner fan motor, air conditioner fan and air conditioner

Abstract

The utility model discloses an air conditioner fan motor, an air conditioner fan and an air conditioner, the air conditioner fan motor comprises a stator assembly, the stator assembly is provided with an accommodating cavity, and at least one axial end of the accommodating cavity is provided with an opening; the rotor assembly is rotatably arranged in the accommodating cavity; the two annular turned-over edges are the first annular turned-over edge and the second annular turned-over edge respectively, the first annular turned-over edge is connected with the peripheral wall of the rotor assembly, the second annular turned-over edge is connected with the end, provided with the opening, of the stator assembly, and the first annular turned-over edge is arranged around the second annular turned-over edge; the outer peripheral surface of the second annular flange extends in a direction close to the stator assembly in the axial direction and extends inwards in an inclined manner; or, the second annular flange is arranged around the first annular flange, and the outer peripheral surface of the first annular flange extends in the direction far away from the stator assembly in the axial direction and extends inwards in an inclined mode. According to the air conditioner fan motor provided by the embodiment of the utility model, the possibility that water enters the accommodating cavity can be reduced, and the waterproof performance of the air conditioner fan motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and more specifically, to an air conditioner fan motor, an air conditioner fan and an air conditioner. Background Art

[0002] Air conditioner outdoor units are typically installed outdoors, where water may splash onto the area near the air conditioner's fan motor. In some related technologies, water can easily enter the motor, causing an internal short circuit and potentially causing motor failure. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an air conditioner fan motor that is not easily infiltrated with water, is not easily short-circuited, and is not easily prone to malfunction.

[0004] Another object of the present invention is to provide an air-conditioning fan having the above-mentioned air-conditioning fan motor.

[0005] Another object of the present invention is to provide an air conditioner having the above-mentioned air conditioner fan.

[0006] According to an embodiment of the utility model, the air conditioner fan motor includes: a stator assembly, the stator assembly having an accommodating cavity, and an open opening is provided at least at one axial end of the accommodating cavity; a rotor assembly, the rotor assembly is rotatably arranged in the accommodating cavity; two annular flanges, the two annular flanges are respectively a first annular flange and a second annular flange, the first annular flange is connected to the outer peripheral wall of the rotor assembly, and the second annular flange is connected to the end of the stator assembly having the open opening, the first annular flange is arranged around the second annular flange, and the outer peripheral surface of the second annular flange extends axially toward the stator assembly and inwardly; or, the second annular flange is arranged around the first annular flange, and the outer peripheral surface of the first annular flange extends axially away from the stator assembly and inwardly.

[0007] According to the air-conditioning fan motor of the embodiment of the present invention, by arranging the first annular flange and the second annular flange at the open mouth, and setting the outer peripheral surface of the annular flange located on the inner ring as a conical surface extending axially and in a specific direction, a tortuous water-blocking structure can be formed between the open mouth and the outside world to reduce the possibility of water entering the accommodating cavity from the open mouth, and the conical surface can also guide water to flow in the direction away from the axially staggered area of ​​the two annular flanges, further reducing the possibility of water entering the open mouth, and the annular flange extends into a ring, making it easier for water to flow downward along the circumference of the annular flange to discharge the annular flange more quickly, which is beneficial to improving the waterproof performance of the air-conditioning fan motor.

[0008] In addition, the air conditioner fan motor according to the above embodiment of the utility model may also have the following additional technical features:

[0009] According to some embodiments of the present invention, the first annular flange is arranged around the second annular flange, and in the axial direction, the second annular flange is spaced apart from the end face of the rotor assembly provided with the first annular flange by a predetermined distance; or, the second annular flange is arranged around the first annular flange, and in the axial direction, the first annular flange is spaced apart from the end face of the stator assembly having the open opening by a predetermined distance.

[0010] According to some embodiments of the present invention, in the axial direction, the raised height of the annular flange located on the inner ring is H1, and the raised height of the annular flange located on the outer ring is H2, and H2>0.5×H1.

[0011] According to some embodiments of the present invention, the air-conditioning fan motor also includes a third annular flange, which is located on the inner side of the annular flange of the inner ring, and the first annular flange is arranged around the second annular flange, and the third annular flange is installed on the rotor assembly and is spaced apart from the stator assembly; or, the second annular flange is arranged around the first annular flange, and the third annular flange is installed on the stator assembly and is spaced apart from the rotor assembly.

[0012] According to some embodiments of the present invention, the outer peripheral surface of the third annular flange extends axially; or, the first annular flange is arranged around the second annular flange, and the outer peripheral surface of the third annular flange extends axially toward the stator assembly and obliquely outward; or, the second annular flange is arranged around the first annular flange, and the outer peripheral surface of the third annular flange extends axially away from the stator assembly and obliquely outward.

[0013] According to some embodiments of the present invention, the rotor assembly includes an insulating body, a first annular portion provided at one axial end of the insulating body, a second annular portion and a plurality of connecting ribs, the second annular portion being arranged around the first annular portion, the connecting ribs connecting the outer circumferential surface of the first annular portion, the inner circumferential surface of the second annular portion and the end surface of one axial end of the insulating body, the plurality of connecting ribs being arranged at intervals along the circumference of the insulating body, and the first annular flange being connected to the outer circumferential surface of the second annular portion.

[0014] According to some embodiments of the present invention, the inner circumferential surface of the annular flange located on the inner ring is parallel to the outer circumferential surface.

[0015] According to some embodiments of the present invention, the rotor assembly includes a rotor insulator, and the first annular flange is integrally formed with the rotor insulator; the stator assembly includes a stator insulator, and the second annular flange is integrally formed with the stator insulator.

[0016] According to some embodiments of the present invention, the stator assembly includes a stator body and a cantilever shaft, the stator body has the accommodating cavity, one end of the accommodating cavity is a closed end and the other end is provided with the open opening, one end of the cantilever shaft is fixedly connected to the closed end, and the rotor assembly is rotatably mounted on the cantilever shaft.

[0017] According to some embodiments of the present invention, the air-conditioning fan motor also includes fan blades, one end of the accommodating cavity is a closed end and the other end is provided with the open opening, the end of the rotor assembly close to the open opening is provided with a connecting portion, and the fan blades are located outside the accommodating cavity and connected to the connecting portion.

[0018] According to some embodiments of the present invention, the fan blade is provided with an annular shielding portion, and the two annular flanges are located within the area enclosed by the annular shielding portion.

[0019] According to some embodiments of the present invention, the inner circumferential surface of the annular shielding portion extends axially in a direction close to the stator assembly and obliquely outward.

[0020] According to some embodiments of the present invention, the connecting portion is connected to the fan blade via a fastener, or the connecting portion is connected to the fan blade by hot melt.

[0021] According to some embodiments of the present invention, one of the rotor assembly and the fan blade is provided with a positioning recess, and the other is provided with a positioning protrusion axially inserted into the positioning recess.

[0022] The air-conditioning fan according to the embodiment of the present invention includes the air-conditioning fan motor according to the embodiment of the present invention.

[0023] The air conditioner according to the embodiment of the present invention includes the air conditioner fan according to the embodiment of the present invention.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1is a cross-sectional view of an air conditioner fan motor according to an embodiment of the present utility model;

[0027] Figure 2 This is a structural diagram of an air conditioner fan motor according to an embodiment of the present utility model;

[0028] Figure 3 1 is a schematic structural diagram of a stator assembly according to an embodiment of the present utility model;

[0029] Figure 4 yes Figure 3 sectional view of

[0030] Figure 5 is a cross-sectional view of a rotor assembly according to an embodiment of the present utility model;

[0031] Figure 6 is a structural schematic diagram of a rotor assembly according to an embodiment of the present utility model;

[0032] Figure 7 yes Figure 6 A schematic diagram from another perspective, wherein the connection portion is a threaded hole;

[0033] Figure 8 1 is a schematic structural diagram of a rotor assembly according to another embodiment of the present invention, wherein the connecting portion is a hot melt column;

[0034] Figure 9 is a cross-sectional view of an air conditioner fan motor according to an embodiment of the present utility model, showing fan blades;

[0035] Figure 10 1 is a schematic structural diagram of an air conditioner fan motor according to an embodiment of the present invention, in which the fan blades are shown but the stator assembly is not shown;

[0036] Figure 11 is a schematic structural diagram of an air conditioner fan motor according to an embodiment of the present invention, showing fan blades;

[0037] Figure 12 1 is a schematic structural diagram of a fan blade according to an embodiment of the present utility model;

[0038] Figure 13 yes Figure 12 The middle circle shows a partial enlarged view of point A.

[0039] Reference numerals:

[0040] Stator assembly 10; stator body 11; stator core 12; stator winding 13; insulating bracket 131; stator insulator 14; accommodating cavity 141; open mouth 143; second annular flange 144; third annular flange 145; cantilever shaft 15; rubber ring 16; mounting ear 17;

[0041] Rotor assembly 20; rotor core 21; magnet 22; rotor insulator 23; insulating body 231; first annular portion 232; second annular portion 233; connecting rib 234; connecting portion 235; first annular flange 236; bearing 24; positioning recess 25;

[0042] Fan blade 30; annular shielding portion 31; positioning protrusion 32; mounting hole 33; axis F. DETAILED DESCRIPTION

[0043] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0044] In the description of the present invention, it should be understood that the terms "thickness", "up", "down", "left", "right", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0045] In the description of the present invention, "first feature" and "second feature" may include one or more such features, "plurality" means two or more, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them, the first feature "above", "above" and "above" the second feature include the first feature being directly above and diagonally above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0046] The air conditioner fan motor 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0047] Reference Figures 1-13 As shown, the air conditioner fan motor 100 according to an embodiment of the present invention may include: a stator assembly 10, a rotor assembly 20 and two annular flanges.

[0048] Specifically, the stator assembly 10 has a housing cavity 141, with an open opening 143 at at least one axial end of the housing cavity 141. The rotor assembly 20 is rotatably disposed within the housing cavity 141. The two annular flanges are a first annular flange 236 and a second annular flange 144. The first annular flange 236 is connected to the outer circumferential wall of the rotor assembly 20, and the second annular flange 144 is connected to the end of the stator assembly 10 having the open opening 143.

[0049] In some embodiments, the second annular flange 144 is disposed around the first annular flange 236, and the outer circumferential surface of the first annular flange 236 extends axially away from the stator assembly 10 and tilted inward. In other embodiments, the first annular flange 236 is disposed around the second annular flange 144, and the outer circumferential surface of the second annular flange 144 extends axially toward the stator assembly 10 and tilted inward.

[0050] The axial direction refers to the extension direction of the axis F of the accommodating cavity 141. For example, in some embodiments, Figure 1 As shown, the axis F extends in the left-right direction, and the axial direction is parallel to the left-right direction. Inward refers to the direction close to the axis F in the radial direction (perpendicular to the axial direction), for example, in some embodiments, as Figure 1 As shown, the outer circumferential surface of the first annular flange 236 extends axially away from the stator assembly 10 and tilted inwardly, that is, the outer circumferential surface of the first annular flange 236 extends rightward and radially toward the axis F.

[0051] The opening 143 can be used to install the rotor assembly 20 in the accommodating cavity 141. The inner diameter of the accommodating cavity 141 is larger than the outer diameter of the portion of the rotor assembly 20 located in the accommodating cavity 141, so that the rotor assembly 20 is installed in the accommodating cavity 141 and the mutual interference between the stator assembly 10 and the rotor assembly 20 is reduced, thereby achieving dynamic and static coordination between the stationary stator assembly 10 and the rotating rotor assembly 20, thereby improving the operating stability of the air conditioner fan motor 100.

[0052] Both axial ends of the accommodating cavity 141 may be provided with an open port 143, which makes it easier to install the rotor assembly 20. The axial ends of the accommodating cavity 141 may also be closed at one end and provided with an open port 143 at the other end, for example Figure 1-Figure 4 As shown, the communication space between the accommodating cavity 141 and the outside world can be reduced, which is beneficial to reducing the water entering the accommodating cavity 141 from the open port 143 and improving the waterproof performance of the air-conditioning fan motor 100.

[0053] The first annular flange 236 can be directly or indirectly connected to the outer peripheral wall of the rotor assembly 20, and the second annular flange 144 can be directly or indirectly connected to the end of the stator assembly 10 having the open opening 143, and the connection method is relatively flexible.

[0054] During the operation of the air-conditioning fan motor 100, the axial direction of the air-conditioning fan motor 100 forms a certain angle with the up-down direction (the angle is not zero). For example, in some embodiments, Figure 1 As shown, the axial direction of the air-conditioning fan motor 100 is perpendicular to the up-down direction.

[0055] The present application provides two annular flanges at the opening 143, wherein the second annular flange 144 is provided around the first annular flange 236, or the first annular flange 236 is provided around the second annular flange 144, and the outer peripheral surface of the annular flange located on the inner ring is provided as a conical surface extending axially and in a specific direction. The two annular flanges can be provided as a structure extending axially and staggered with each other, so that the two annular flanges form a tortuous path between the opening 143 and the outside world (for example, Figure 1 The tortuous path here refers to the flow path of water flowing into the axially staggered area of ​​the two annular flanges, and the axially staggered area of ​​the two annular flanges is connected to the open port 143.

[0056] Most of the water outside the air-conditioning fan motor 100 is blocked by the annular flange located on the outer ring, and a small amount of water not blocked by the annular flange of the outer ring can be blocked by the annular flange located on the inner ring, making it difficult for water to flow from the axially staggered area of ​​the two annular flanges into the open port 143 and then into the accommodating cavity 141. The air-conditioning fan motor 100 is not easy to be infiltrated by water, which is beneficial to improving the waterproof performance of the air-conditioning fan motor 100, making it difficult for the air-conditioning fan motor 100 to short-circuit inside and the air-conditioning fan motor 100 to malfunction.

[0057] The annular flange extends into a ring shape around the axis F, so that water splashed on the outer peripheral surface of the annular flange can flow along the circumference of the annular flange and be discharged downward from the annular flange (for example Figure 2 The water flow is guided along the circumferential direction so that the water flows downward faster to be discharged from the annular flange, which has a good drainage effect and makes it difficult for water to enter the air-conditioning fan motor 100, thereby further improving the waterproof performance of the air-conditioning fan motor 100.

[0058] Here, the outer ring refers to a ring that is farther from the axis F in the radial direction than the inner ring. For example, in some embodiments, Figure 1 As shown, the second annular flange 144 is disposed around the first annular flange 236. In the radial direction, the first annular flange 236 is closer to the axis F than the second annular flange 144. The second annular flange 144 is an annular flange located on the outer ring, and the first annular flange 236 is an annular flange located on the inner ring. In other embodiments, the first annular flange 236 is disposed around the second annular flange 144. In the radial direction, the second annular flange 144 is closer to the axis F than the first annular flange 236. The first annular flange 236 is an annular flange located on the outer ring, and the second annular flange 144 is an annular flange located on the inner ring.

[0059] In some embodiments where the second annular flange 144 is disposed around the first annular flange 236, the outer circumferential surface of the first annular flange 236 extends axially away from the stator assembly 10 and tilts inward, thereby forming a tapered surface on the outer circumferential surface of the inner ring of the first annular flange 236. This can guide water flowing onto the outer circumferential surface of the first annular flange 236. Specifically, under the action of gravity, water flowing onto the outer circumferential surface of the first annular flange 236 flows downward and axially away from the opening 143, that is, away from the axially offset region between the two annular flanges. This makes it difficult for water to flow into the opening 143 from the axially offset region between the two annular flanges, and allows the water to flow circumferentially downward to be discharged from the outer circumferential surface of the first annular flange 236 more quickly. This prevents water from entering the interior of the air conditioning fan motor 100, thereby further improving the waterproof performance of the air conditioning fan motor 100.

[0060] For example, in some specific embodiments, Figure 1 As shown, the second annular flange 144 is arranged around the first annular flange 236, and the outer peripheral surface of the first annular flange 236 extends axially to the right and inwardly.

[0061] In some embodiments where the first annular flange 236 surrounds the second annular flange 144, the outer circumferential surface of the second annular flange 144 extends axially toward the stator assembly 10 and tilts inward, forming a tapered surface on the outer circumference of the inner ring of the second annular flange 144. This serves to guide water flowing toward the outer circumference of the second annular flange 144. Specifically, the second annular flange 144 separates the space outside the second annular flange 144 from the opening 143, preventing water from flowing into the opening 143. Water flowing toward the outer circumference of the second annular flange 144 is forced downward by gravity and axially toward the opening 143, moving away from the axially offset region between the two annular flanges. This prevents water from flowing into the opening 143 from the axially offset region between the two annular flanges. Furthermore, water is forced to flow circumferentially downward, draining more quickly from the outer circumference of the second annular flange 144. This prevents water from entering the interior of the air conditioning fan motor 100, further improving the waterproof performance of the air conditioning fan motor 100.

[0062] For example, in some specific embodiments, the first annular flange 236 is disposed around the second annular flange 144 , and the outer peripheral surface of the second annular flange 144 extends axially to the left and inwardly.

[0063] Furthermore, during operation of the air conditioning fan motor 100, the rotor assembly 20 rotates about the axis F, causing the first annular flange 236 to rotate about the axis F to throw water outward, making it less likely that water outside the first annular flange 236 will flow into the accommodating cavity 141, thereby improving the waterproof performance of the air conditioning fan motor 100. Here, outward refers to a direction radially away from the axis F.

[0064] According to the air-conditioning fan motor 100 of the embodiment of the present utility model, by arranging the first annular flange 236 and the second annular flange 144 at the open port 143, and setting the outer peripheral surface of the annular flange located on the inner ring to be a conical surface extending axially and in a specific direction, a tortuous water-blocking structure can be formed between the open port 143 and the outside world to reduce the possibility of water entering the accommodating cavity 141 from the open port 143, and the conical surface can also guide water to flow in a direction away from the axially staggered area of ​​the two annular flanges, further reducing the possibility of water entering the open port 143, and the annular flange extends into a ring, making it easier for water to flow downward along the circumference of the annular flange to discharge the annular flange more quickly, which is beneficial to improving the waterproof performance of the air-conditioning fan motor 100.

[0065] In some embodiments of the present invention, Figure 1 As shown, the second annular flange 144 is arranged around the first annular flange 236. In the axial direction, the first annular flange 236 is spaced apart from the end face of the stator assembly 10 having the open opening 143 by a predetermined distance L, thereby reducing the mutual interference between the stator assembly 10 and the rotor assembly 20, facilitating the dynamic and static coordination between the stationary stator assembly 10 and the rotating rotor assembly 20, and improving the working stability of the air-conditioning fan motor 100.

[0066] In other embodiments, the first annular flange 236 is arranged around the second annular flange 144, and in the axial direction, the second annular flange 144 and the end face of the rotor assembly 20 on which the first annular flange 236 is provided are separated by a predetermined distance L, so as to achieve dynamic and static cooperation between the stator assembly 10 and the rotor assembly 20 under different settings of the two annular flanges.

[0067] Here, the predetermined distance L can be determined according to the specific situation. For example, the predetermined distance L can be made as small as possible without causing motion interference between the stator assembly 10 and the rotor assembly 20, thereby reducing the possibility of water entering the open port 143 from the gap between the first annular flange 236 and the stator assembly 10, or the gap between the second annular flange 144 and the rotor assembly 20, thereby further improving the waterproof performance of the air-conditioning fan motor 100.

[0068] In some embodiments of the present invention, Figure 1 and Figure 4-Figure 5As shown, in the axial direction, the raised height of the inner annular flange is H1, and the raised height of the outer annular flange is H2, with H2 greater than 0.5 × H1. If H2 ≤ 0.5 × H1, the zigzag path formed by the two annular flanges will be too short, which will likely cause more water splashing near the air conditioning fan motor 100 to flow to the inner annular flange rather than the outer annular flange, potentially leading to water ingress at the inner annular flange and increasing the risk of water ingress at the open opening 143. However, if H2 is greater than 0.5 × H1, the zigzag path formed by the two annular flanges can meet the required length, helping to ensure that more water splashing near the air conditioning fan motor 100 flows to the outer annular flange rather than the inner annular flange. This allows the outer annular flange to block most of the water, and then the inner annular flange to block a small amount of water. This reduces the risk of water ingress at the open opening 143 and creates a more effective waterproofing effect.

[0069] In some embodiments of the present invention, Figure 1 and Figure 4 As shown, the air conditioning fan motor 100 further includes a third annular flange 145, which is located on the inner side of the inner annular flange. The first annular flange 236, the second annular flange 144, and the third annular flange 145 form a more tortuous maze path for water blocking. Water splashing near the air conditioning fan motor 100 is sequentially blocked by the outer annular flange, the inner annular flange, and the third annular flange 145. This reduces the risk of water ingress at the opening 143 and improves the waterproofing effect.

[0070] In some embodiments, as Figure 1 As shown, the second annular flange 144 is disposed around the first annular flange 236, and the third annular flange 145 is mounted on the stator assembly 10 and spaced apart from the rotor assembly 20. This reduces interference between the stator assembly 10 and the rotor assembly 20 at the third annular flange 145, facilitates dynamic and static coordination between the stationary stator assembly 10 and the rotating rotor assembly 20, and improves the operating stability of the air conditioner fan motor 100.

[0071] In other embodiments, the first annular flange 236 is arranged around the second annular flange 144, and the third annular flange 145 is installed on the rotor assembly 20 and spaced apart from the stator assembly 10, so as to achieve dynamic and static cooperation between the stator assembly 10 and the rotor assembly 20 at the third annular flange 145 under different settings of the two annular flanges.

[0072] It can be understood that the outer ring annular flange is spaced apart from the inner ring annular flange, and the inner ring annular flange is spaced apart from the third annular flange, so as to reduce dynamic and static interference and achieve dynamic and static coordination between the rotor assembly 20 and the stator assembly 10.

[0073] In some embodiments of the present invention, Figure 1 and Figure 4 As shown, the outer peripheral surface of the third annular flange 145 extends axially, which can reduce the possibility of water at the third annular flange 145 entering the open port 143 and facilitates manufacturing, such as injection molding, which is convenient for demoulding.

[0074] In some embodiments where the second annular flange 144 is disposed around the first annular flange 236, the outer circumferential surface of the third annular flange 145 extends axially away from the stator assembly 10 and tilts outward, forming a tapered surface on the outer circumferential surface of the third annular flange 145. This can guide water flowing toward the outer circumferential surface of the third annular flange 145. Specifically, the third annular flange 145 separates the space outside the third annular flange 145 from the open opening 143, making it difficult for water to flow into the open opening 143. Water flowing toward the outer circumferential surface of the third annular flange 145 flows downward and axially toward the open opening 143 under the action of gravity, causing the water to flow away from the axially offset region between the third annular flange 145 and the inner annular flange, making it difficult for water to flow into the open opening 143 from the axially offset region between the third annular flange 145 and the inner annular flange. The water is made to flow downward along the circumferential direction to be discharged from the outer peripheral surface of the third annular flange 145 more quickly, and water is not easily introduced into the air-conditioning fan motor 100 , which is beneficial to further improve the waterproof performance of the air-conditioning fan motor 100 .

[0075] In some embodiments where the first annular flange 236 is disposed around the second annular flange 144, the outer circumferential surface of the third annular flange 145 extends axially toward the stator assembly 10 and outwardly, thereby forming a tapered surface on the outer circumferential surface of the third annular flange 145. This can guide water flowing onto the outer circumferential surface of the third annular flange 145. Specifically, under the action of gravity, water flowing onto the outer circumferential surface of the third annular flange 145 flows downward and axially away from the opening 143, that is, away from the axially offset region between the third annular flange 145 and the inner annular flange. This makes it difficult for water to flow into the opening 143 from the axially offset region between the third annular flange 145 and the inner annular flange, and allows the water to flow circumferentially downward to be discharged from the outer circumferential surface of the third annular flange 145 more quickly. This prevents water from entering the interior of the air conditioning fan motor 100, thereby further improving the waterproof performance of the air conditioning fan motor 100.

[0076] In some embodiments of the present invention, Figure 6-Figure 8As shown, the rotor assembly 20 includes an insulating body 231, a first annular portion 232, a second annular portion 233 and a plurality of connecting ribs 234 provided at one axial end of the insulating body 231. The second annular portion 233 is provided around the first annular portion 232. The connecting ribs 234 connect the outer circumferential surface of the first annular portion 232, the inner circumferential surface of the second annular portion 233 and the end surface of one axial end of the insulating body 231. The plurality of connecting ribs 234 are arranged at intervals along the circumference of the insulating body 231, and the first annular flange 236 is connected to the outer circumferential surface of the second annular portion 233.

[0077] The insulating body 231 is used to encase the rotor core 21 and magnets 22 of the rotor assembly 20. Connecting ribs 234 can be provided by the insulating body 231, the first annular portion 232, and the second annular portion 233. This reduces the material required between circumferentially adjacent connecting ribs 234, thereby achieving weight reduction and improving economic efficiency. The connecting ribs 234 also enhance the strength of the first annular portion 232 and the second annular portion 233, thereby increasing the strength of the first annular flange 236 connected to the second annular portion 233, reducing the risk of deformation of the first annular flange 236, and improving the reliability of the first annular flange 236 in waterproofing.

[0078] In some embodiments of the present invention, Figure 1 and Figure 5 As shown, the inner circumference of the annular flange located on the inner ring is parallel to the outer circumference, so that the thickness of the inner ring annular flange is uniform, which is conducive to reducing materials, achieving weight reduction function, and having better economy.

[0079] In some embodiments including the third annular flange 145, such as Figure 1 As shown, the water on the outer peripheral surface of the third annular flange 145 flows downward as a whole under the action of gravity and flows toward the inner peripheral surface of the inner ring annular flange. The inner peripheral surface of the inner ring annular flange forms a cone, which can guide the water flowing to the inner peripheral surface of the inner ring annular flange, so that the water flows out of the annular flange faster under the guidance of the inner peripheral surface of the inner ring annular flange, and the waterproof effect is better.

[0080] For example, in some specific embodiments, Figure 1 As shown, the second annular flange 144 is arranged around the first annular flange 236, and the outer circumferential surface and the inner circumferential surface of the inner ring first annular flange 236 extend axially to the right and inward, so that the water flowing from the outer circumferential surface of the third annular flange 145 to the inner circumferential surface of the first annular flange 236 flows out of the first annular flange 236 faster to the left and downward under the guidance of the inner circumferential surface of the first annular flange 236.

[0081] The embodiment in which the first annular flange 236 is arranged around the second annular flange 144 is similar to the above process and will not be repeated here.

[0082] In some embodiments, the outer circumferential surface of the outer annular flange extends axially, preventing water from flowing from the outer circumferential surface of the outer annular flange to the inner annular flange. This also facilitates manufacturing, such as mold removal in injection molding. The inner circumferential surface of the outer annular flange extends axially, which helps to reduce the gap between the inner circumferential surface of the outer annular flange and the outer circumferential surface of the inner annular flange in the radial direction, reducing the risk of water ingress and achieving a better waterproof effect.

[0083] In some embodiments of the present invention, Figure 1 and Figure 4-Figure 5 As shown, the rotor assembly 20 includes a rotor insulator 23, with a first annular flange 236 integrally formed with the rotor insulator 23. The stator assembly 10 includes a stator insulator 14, with a second annular flange 144 integrally formed with the stator insulator 14. This reduces the number of required parts and simplifies the assembly process of the air conditioner blower motor 100. It also makes the overall structure of the first annular flange 236 and the rotor insulator 23, and the second annular flange 144 and the stator insulator 14, more robust and durable. For example, relative movement or even separation is less likely to occur, resulting in improved practicality. The integral molding can be, for example, integral injection molding.

[0084] For example, in some embodiments, the stator assembly 10 is integrally formed by injection molding, and the rotor assembly 20 is integrally formed by injection molding. The air-conditioning fan motor 100 can be assembled by directly assembling the rotor assembly 20 into the stator assembly 10, and the assembly process is relatively simple.

[0085] Compared with the related technology of installing a soft waterproof cover on the motor shaft to achieve waterproofing, the present application can not only achieve a waterproof effect through the first annular flange 236 and the second annular flange 144, but also reduce the required parts and simplify the installation process, reduce material costs and labor costs, and has a simple structure and low cost.

[0086] In some embodiments, as Figure 5-Figure 8 As shown, the rotor insulator 23 is made of PBT (polybutylene terephthalate) material, and the rotor insulator 23 is injection molded to wrap the rotor core 21 and the magnet 22. The rotor core 21 adopts a block structure to improve the utilization rate of silicon steel material stamping and reduce the leakage magnetic effect. The magnet 22 is a plurality of magnets, and the plurality of magnets are correspondingly installed in the plurality of mounting slots of the block rotor core 21. The rotor core 21 and the magnet 22 are wrapped as a whole with PBT material to ensure the safety of the rotor assembly 20 during operation. In particular, the rotor core 21 and the magnet 22 are wrapped with PBT material at both ends along the axial direction, which can enhance the structural strength of the rotor assembly 20 and reduce the risk of axial movement of the magnet 22 and the rotor core 21 being detached and thrown out during the rotation of the rotor assembly 20.

[0087] In some embodiments, as Figure 4As shown, the stator insulator 14 is made of BMC (bulk molding compound) material, and is injection molded around the stator core 12, stator winding 13, insulation bracket 131, and pins to provide waterproof insulation. The stator winding 13 is an aluminum wire winding.

[0088] In some embodiments, as Figure 4 As shown, the first annular flange 236 and the rotor insulator 23 are separate parts, and the second annular flange 144 and the stator insulator 14 are separate parts, which facilitates maintenance or replacement and reduces maintenance costs.

[0089] In some embodiments of the present invention, Figure 1 and Figure 4 As shown, the stator assembly 10 includes a stator body 11 and a cantilever shaft 15. The stator body 11 has an accommodating cavity 141. One end of the accommodating cavity 141 is closed and the other end is provided with an open opening 143. One end of the cantilever shaft 15 is fixedly connected to the closed end, and the rotor assembly 20 is rotatably mounted on the cantilever shaft 15. By fixing one end of the cantilever shaft 15 and cantilevering the other end, it is convenient to eliminate the mounting structure of the cantilever shaft 15 at the cantilever end, such as an end cap. By mounting the rotor assembly 20 on the cantilever shaft 15, it is possible to save axial space of the air conditioner fan motor 100 while achieving the assembly of the stator assembly 10 and the rotor assembly 20, thereby facilitating the miniaturization and lightweighting of the air conditioner fan motor 100.

[0090] In some embodiments, as Figure 1 and Figure 4 As shown, the end surface of the left end of the stator body 11 is flush with the end surface of the left end (closed end) of the cantilever shaft 15, which is beneficial to further save the axial space of the air-conditioning fan motor 100.

[0091] In some embodiments of the present invention, Figure 7-11 As shown, the air conditioner fan motor 100 further includes a fan blade 30, one end of the accommodating cavity 141 is a closed end and the other end is provided with an open opening 143, and the end of the rotor assembly 20 near the open opening 143 is provided with a connecting portion 235, and the fan blade 30 is located outside the accommodating cavity 141 and connected to the connecting portion 235. The fan blade 30 is connected to the rotor assembly 20 so that the fan blade 30 and the rotor assembly 20 rotate synchronously, and the connecting portion 235 is located at the end of the rotor assembly 20 near the open opening 143. The fan blade 30 is located outside the accommodating cavity 141, so that the fan blade 30 is located on one side of the open opening 143 in the axial direction, which is beneficial for the fan blade 30 to block water splashed in the axial direction at the open opening 143, and the waterproof effect is better.

[0092] In some embodiments, as Figure 7-Figure 8As shown, the connecting portion 235 is a part of the connecting rib 234 , which is beneficial for integrating the weight reduction and strengthening effects of the connecting rib 234 and the function of connecting the connecting portion 235 with the fan blade 30 , thereby realizing functional integration and simplifying the structure of the rotor assembly 20 .

[0093] In some embodiments, as Figures 9-13 As shown, the fan blade 30 is provided with an annular shielding portion 31, and the two annular flanges are located in the area enclosed by the annular shielding portion 31. The annular shielding portion 31 can block water splashing radially at the open port 143, thereby improving the waterproof effect at the open port 143.

[0094] In some embodiments, as Figure 9 As shown, the inner diameter of the annular shielding portion 31 is larger than the outer diameter of the end of the stator assembly 10 provided with the annular flange, so that the annular shielding portion 31 can accommodate the end of the stator assembly 10 provided with the annular flange, which is beneficial to protecting the stator assembly 10, and the annular shielding portion 31 is spaced apart from the stator assembly 10 to achieve dynamic and static coordination between the rotating fan blades 30 and the stationary stator assembly 10.

[0095] In some embodiments, as Figure 9 As shown, the inner circumferential surface of the annular shielding portion 31 extends axially toward the stator assembly 10 and tilts outward, forming a tapered surface on the inner circumferential surface of the annular shielding portion 31. This can guide water flowing toward the inner circumferential surface of the annular shielding portion 31. Specifically, under the action of gravity, the water within the annular shielding portion 31 flows downward as a whole to the inner circumferential surface of the annular shielding portion 31. The inner circumferential surface of the annular shielding portion 31 guides the water under the action of gravity toward the stator assembly 10 and downward to exit the annular shielding portion 31. This allows the water within the annular shielding portion 31 to flow out of the annular shielding portion 31 more quickly under the guidance of the inner circumferential surface, thereby achieving a better waterproof effect.

[0096] In some embodiments, as Figure 7 、 Figure 9 and Figure 12-13 As shown, the connecting portion 235 is connected to the fan blade 30 by a fastener. The fastener can be a screw, a bolt or a screw. The fan blade 30 is connected to the rotor assembly 20 by the fastener, and the connection is relatively firm.

[0097] In some specific embodiments, Figure 7 and Figure 12-13 As shown, the connecting portion 235 is a threaded hole, the fan blade 30 is provided with a mounting hole 33 , and the fastener is a self-tapping screw and is passed through the bolt hole and the mounting hole 33 .

[0098] In some embodiments, as Figure 8-Figure 9 and Figure 12-13 As shown, the connecting portion 235 is connected to the fan blade 30 by hot-melt connection, which is firm and well-sealed, is not easy to get in with water, and has a long service life.

[0099] In some specific embodiments, Figure 8 and Figure 12-13 As shown, the connecting portion 235 is a heat-sealable post. The fan blade 30 is provided with a mounting hole 33, and the heat-sealable post is connected to the mounting hole 33 by heat-seal. The heat-sealable post can be a hollow post, which is easy to soften when heated and has high heat-seal efficiency. The heat-sealable post can also be a solid post, which has a simple structure and is easy to manufacture.

[0100] In some embodiments, as Figure 7-Figure 8 and Figure 12-13 As shown, one of the rotor assembly 20 and the fan blade 30 is provided with a positioning recess 25, and the other is provided with a positioning protrusion 32 axially inserted into the positioning recess 25. The positioning recess 25 and the positioning protrusion 32 are limited, so that the connection position of the fan blade 30 and the rotor assembly 20 is more precise. After the connection, the positioning protrusion 32 is inserted into the positioning recess 25, increasing the contact area between the fan blade 30 and the rotor assembly 20, making the connection between the fan blade 30 and the rotor assembly 20 more secure, and the rotation of the fan blade 30 and the rotor assembly 20 more synchronized, thereby improving the working efficiency of the air conditioner fan motor 100.

[0101] The air conditioning fan according to the embodiment of the present invention includes the air conditioning fan motor 100 according to the embodiment of the present invention. Since the air conditioning fan motor 100 according to the embodiment of the present invention has the above-mentioned beneficial technical effects, the air conditioning fan according to the embodiment of the present invention, by providing the first annular flange 236 and the second annular flange 144 at the opening 143, and configuring the outer peripheral surface of the annular flange located on the inner ring to be a conical surface extending axially and in a specific direction, can form a tortuous water-blocking structure between the opening 143 and the outside world to reduce the possibility of water entering the accommodating chamber 141 from the opening 143. The conical surface can also guide water to flow in a direction away from the axially offset area of ​​the two annular flanges, further reducing the possibility of water entering the opening 143. The annular flange extends into a ring shape, making it easier for water to flow downward along the circumference of the annular flange to be discharged more quickly from the annular flange, which is beneficial to improving the waterproof performance of the air conditioning fan motor 100.

[0102] The air conditioner according to the embodiment of the present invention includes the air conditioner fan according to the embodiment of the present invention. Since the air conditioner fan according to the embodiment of the present invention has the above-mentioned beneficial technical effects, the air conditioner according to the embodiment of the present invention, by providing the first annular flange 236 and the second annular flange 144 at the opening 143, and configuring the outer peripheral surface of the annular flange located on the inner ring to be a conical surface extending axially and in a specific direction, can form a tortuous water-blocking structure between the opening 143 and the outside world to reduce the possibility of water entering the accommodating cavity 141 from the opening 143, and can also guide water to flow in a direction away from the axially staggered area of ​​the two annular flanges through the conical surface, further reducing the possibility of water entering the opening 143. The annular flange extends into a ring shape, making it easier for water to flow downward along the circumference of the annular flange to be discharged from the annular flange more quickly, which is beneficial to improving the waterproof performance of the air conditioner fan motor 100.

[0103] The air-conditioning fan motor 100, the air-conditioning fan and the air-conditioning according to a specific embodiment of the present invention are described in detail below with reference to the accompanying drawings. It is worth noting that the following description is only an exemplary illustration and cannot be understood as a limitation to the utility model.

[0104] like Figure 1-Figure 7 and Figures 9-13 As shown, an air conditioner fan motor 100 according to a specific embodiment of the present invention is used in an air conditioner fan, and the air conditioner fan is used for air conditioning. The air conditioner fan motor 100 includes a stator assembly 10, a rotor assembly 20 and fan blades 30.

[0105] The stator assembly 10 includes a stator body 11 and a cantilever shaft 15. The stator body 11 includes a stator core 12, a stator winding 13, and a stator insulator 14. The stator insulator 14 surrounds the stator core 12, the stator winding 13, and the left end of the cantilever shaft 15. The stator insulator 14 has a receiving cavity 141 and an open opening 143 at its right end. The stator insulator 14 includes a second annular flange 144 and a third annular flange 145 at the open opening 143.

[0106] The rotor assembly 20 includes a rotor core 21, magnets 22, a rotor insulator 23, and a bearing 24. The rotor insulator 23 includes an insulating body 231, a first annular portion 232, a second annular portion 233, and a plurality of connecting ribs 234. The insulating body 231 surrounds the rotor core 21 and magnets 22. The connecting ribs 234 are spaced apart along the circumference of the insulating body 231. Positioning recesses 25 are formed between adjacent connecting ribs 234, and a portion of the connecting ribs 234 forms a connecting portion 235. The right end of the rotor insulator 23 includes a first annular flange 236.

[0107] The fan blade 30 is provided with an annular shielding portion 31 , a positioning protrusion 32 and a mounting hole 33 .

[0108] The rotor assembly 20 is disposed within the accommodating cavity 141 of the stator assembly 10 and is rotatably mounted on the cantilever shaft 15. The rotating rotor assembly 20 is statically and dynamically coupled to the stationary cantilever shaft 15 via two bearings 24. The fan blade 30 is disposed on the right side of the rotor assembly 20 and is connected to the rotor assembly 20 via fasteners extending through the connecting portion 235 and the mounting hole 33. The positioning protrusion 32 of the fan blade 30 is inserted into the positioning recess 25 of the rotor assembly 20.

[0109] The annular shielding portion 31, the second annular flange 144, the first annular flange 236 and the third annular flange 145 are arranged in sequence from the outside to the inside around the axis F, the second annular flange 144 and the third annular flange 145 form an annular groove, the first annular flange 236 is inserted to the left into the annular groove between the second annular flange 144 and the third annular flange 145, and the second annular flange 144, the first annular flange 236 and the third annular flange 145 are inserted to the right into the annular shielding portion 31.

[0110] The inner circumference of the annular shielding portion 31 extends obliquely to the left and outward, the outer circumference and inner circumference of the second annular flange 144 both extend axially, the outer circumference and inner circumference of the first annular flange 236 both extend obliquely to the left and outward, and the outer circumference of the third annular flange 145 extends axially for easy demolding.

[0111] During the operation of the air conditioner, water may splash from the right side of the fan blade 30 to the left. First, most of the splashing water is blocked by the right surface of the fan blade 30, and the water that is not blocked by the right surface of the fan blade 30 and enters the left side of the fan blade 30 can be blocked by the annular shielding portion 31.

[0112] Water that enters the annular shielding portion 31 without being blocked by it flows downward under the action of gravity. A portion of the water flows to the inner circumference of the annular shielding portion 31 and, guided by the inner circumference of the annular shielding portion 31, flows leftward and downward out of the annular shielding portion 31. A portion of the water flows to the outer circumference of the second annular flange 144. The majority of the water that has flowed to the outer circumference of the second annular flange 144 flows along the circumference of the second annular flange 144, ultimately flowing downward toward the inner circumference of the annular shielding portion 31 and, guided by the inner circumference of the annular shielding portion 31, flows out of the annular shielding portion 31. A portion of the water that has flowed to the outer circumference of the first annular flange 236 and that is not blocked by the second annular flange 144 also flows toward the outer circumference of the first annular flange 236.

[0113] Water flowing toward the outer circumferential surface of the first annular flange 236 flows rightward and downward under the guidance of the outer circumferential surface of the first annular flange 236, flows along the circumference of the first annular flange 236, and ultimately flows downward toward the inner circumferential surface of the annular shielding portion 31, and then flows out of the annular shielding portion 31 under the guidance of the inner circumferential surface of the annular shielding portion 31. In addition, the inner circumferential surface of the second annular flange 144 extends axially, resulting in a relatively small radial gap between the inner circumferential surface of the second annular flange 144 and the outer circumferential surface of the first annular flange 236. This makes it difficult for water to flow through this gap and into the space between the first annular flange 236 and the end face of the stator assembly 10.

[0114] Even if there is water that is not blocked by the first annular flange 236 and flows into the space between the first annular flange 236 and the end face of the stator assembly 10, it can be blocked by the third annular flange 145, so that the water flows along the circumference of the third annular flange 145 and eventually flows downward to the inner circumference of the first annular flange 236 and the second annular flange 144. Through the guiding effect of the inner circumference of the first annular flange 236, the water is caused to flow to the left and downward to the inner circumference of the second annular flange 144, and eventually flows out of the second annular flange 144 axially along the inner circumference of the second annular flange 144 to flow downward to the inner circumference of the annular shielding portion 31, and flows out of the annular shielding portion 31 under the guiding effect of the inner circumference of the annular shielding portion 31.

[0115] Through the multiple blocking of water by the right surface of the fan blade 30, the annular shielding part 31, the second annular flange 144, the first annular flange 236 and the third annular flange 145, as well as the guiding effect of the inner circumference of the annular shielding part 31, the outer circumference of the first annular flange 236 and the inner circumference of the first annular flange 236 on water, water entering the annular shielding part 31 can flow out faster, reducing the risk of water entering the accommodating cavity 141 from the open port 143, and the air-conditioning fan motor 100 has a better waterproof effect.

[0116] Furthermore, bearing 24 is mounted in accommodating cavity 141, saving axial space within air conditioner blower motor 100. A groove is provided in cantilever shaft 15, allowing for the installation of a retaining ring on one axial side of bearing 24, reducing the risk of axial movement of bearing 24. A bearing 24 is located at both the left and right ends of cantilever shaft 15. A corrugated washer is located on the left side of the right-hand bearing 24, between its outer ring and rotor assembly 20, to reduce the risk of rotation of the outer ring of bearing 24 relative to rotor assembly 20.

[0117] The stator assembly 10 is provided with a mounting ear 17, and a rubber ring 16 made of rubber material is provided at the mounting ear 17. The air-conditioning fan motor 100 is connected to other components of the air-conditioning fan through the rubber ring 16, which can achieve a buffering and shock-absorbing effect and has good installation stability.

[0118] The air-conditioning fan motor 100 , the air-conditioning fan and other structures and operations of the air-conditioning fan according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0119] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0120] Throughout this specification, reference to terms such as "embodiment," "specific embodiment," and "example" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0121] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air conditioner fan motor, characterized in that: include: A stator assembly, the stator assembly having an accommodating cavity, wherein at least one axial end of the accommodating cavity is provided with an open opening; a rotor assembly rotatably disposed in the accommodating cavity; Two annular flanges, the two annular flanges are respectively a first annular flange and a second annular flange, the first annular flange is connected to the outer peripheral wall of the rotor assembly, and the second annular flange is connected to the end of the stator assembly having the open opening, The first annular flange is arranged around the second annular flange, and the outer peripheral surface of the second annular flange extends axially toward the stator assembly and tilted inward; or, The second annular flange is arranged around the first annular flange, and the outer peripheral surface of the first annular flange extends axially away from the stator assembly and tilted inward.

2. The air conditioner fan motor according to claim 1, characterized in that: The first annular flange is arranged around the second annular flange, and in the axial direction, the second annular flange is spaced apart from the end surface of the rotor assembly provided with the first annular flange by a predetermined distance; or The second annular flange is disposed around the first annular flange. In the axial direction, the first annular flange is spaced apart from the end surface of the stator assembly having the open opening by a predetermined distance.

3. The air conditioner fan motor according to claim 1, characterized in that: In the axial direction, the raised height of the annular flange located on the inner ring is H1, and the raised height of the annular flange located on the outer ring is H2, where H2>0.5×H1.

4. The air conditioner fan motor according to claim 1, characterized in that: It also includes a third annular flange, the third annular flange is located on the inner side of the annular flange of the inner ring, The first annular flange is arranged around the second annular flange, and the third annular flange is installed on the rotor assembly and is spaced apart from the stator assembly; or, the second annular flange is arranged around the first annular flange, and the third annular flange is installed on the stator assembly and is spaced apart from the rotor assembly.

5. The air conditioner fan motor according to claim 4, characterized in that: The outer peripheral surface of the third annular flange extends axially; or, The first annular flange is arranged around the second annular flange, and the outer peripheral surface of the third annular flange extends axially toward the stator assembly and outwardly in an inclined manner, or the second annular flange is arranged around the first annular flange, and the outer peripheral surface of the third annular flange extends axially away from the stator assembly and outwardly in an inclined manner.

6. The air conditioner fan motor according to claim 1, characterized in that: The rotor assembly includes an insulating body, a first annular portion provided at one axial end of the insulating body, a second annular portion and a plurality of connecting ribs, wherein the second annular portion is provided around the first annular portion, and the connecting ribs connect the outer circumferential surface of the first annular portion, the inner circumferential surface of the second annular portion and the end surface of one axial end of the insulating body. The plurality of connecting ribs are arranged at intervals along the circumference of the insulating body, and the first annular flange is connected to the outer circumferential surface of the second annular portion.

7. The air conditioner fan motor according to claim 1, characterized in that: The inner circumferential surface of the annular flange located on the inner ring is parallel to the outer circumferential surface.

8. The air conditioner fan motor according to claim 1, characterized in that: The rotor assembly includes a rotor insulator, and the first annular flange is integrally formed with the rotor insulator; the stator assembly includes a stator insulator, and the second annular flange is integrally formed with the stator insulator.

9. The air conditioner fan motor according to claim 1, characterized in that: The stator assembly includes a stator body and a cantilever shaft. The stator body has the accommodating cavity. One end of the accommodating cavity is a closed end and the other end is provided with the open opening. One end of the cantilever shaft is fixedly connected to the closed end, and the rotor assembly is rotatably mounted on the cantilever shaft.

10. The air conditioner fan motor according to claim 9, characterized in that: It also includes fan blades. The end of the rotor assembly close to the open mouth is provided with a connecting portion. The fan blades are located outside the accommodating cavity and connected to the connecting portion.

11. The air conditioner fan motor according to any one of claims 1 to 8, characterized in that: It also includes fan blades, one end of the accommodating cavity is a closed end and the other end is provided with the open mouth, the end of the rotor assembly close to the open mouth is provided with a connecting part, and the fan blades are located outside the accommodating cavity and connected to the connecting part.

12. The air conditioner fan motor according to claim 11, characterized in that: The fan blade is provided with an annular shielding portion, and the two annular flanges are located in the area enclosed by the annular shielding portion.

13. The air conditioner fan motor according to claim 12, characterized in that: The inner circumferential surface of the annular shielding portion extends axially in a direction close to the stator assembly and obliquely outward.

14. The air conditioner fan motor according to claim 11, characterized in that: The connecting portion is connected to the fan blade via a fastener, or the connecting portion is connected to the fan blade by hot melt.

15. The air conditioner fan motor according to claim 11, characterized in that: One of the rotor assembly and the fan blade is provided with a positioning recess, and the other is provided with a positioning protrusion inserted into the positioning recess along the axial direction.

16. An air-conditioning fan, characterized in that: It comprises an air conditioner fan motor according to any one of claims 1-15.

17. An air conditioner, characterized in that: Comprising the air conditioning fan according to claim 16.

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