Stator assembly, motor and clothes drying equipment
By optimizing the structural design of the stator assembly, alternating the arrangement of stator teeth and yoke, and winding the stator windings close to the center of the core, the problems of wasted space in the stator structure and damage to the windings are solved, thereby improving utilization and reducing core loss.
Patent Information
- Application Number
- CN202422961096.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-11-29
AI Technical Summary
In the existing technology, the stator structure of the fan motor of the washer-dryer combo machine has problems of wasted space and low effective volume utilization. In addition, the stator winding is prone to damage, resulting in low processing yield and high core loss.
Design a stator assembly that alternates stator teeth and yoke, with stator windings wound around the outer periphery of the yoke and close to the center of the stator core. By utilizing the protection of the teeth and protrusions, space waste is reduced and the overall utilization rate is improved. At the same time, insulation protection is provided by the plastic coating, and the magnetic line path is shortened to reduce core loss.
This improves the space utilization of the stator assembly, prevents stator winding damage, increases the yield of processed products, and reduces core loss.
Smart Images
Figure CN223583901U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to motor stator technical field, specifically, relate to a kind of stator assembly, a kind of motor and a kind of clothes drying equipment. BACKGROUND
[0002] Washing and drying integrated machine is a kind of domestic appliance with washing and drying clothes function, in recent years, with the requirement of people for life quality is higher and higher, washing and drying integrated machine gradually enters more and more families. In the prior art, the drying function of washing and drying integrated machine needs to be realized by the delivery of hot air by the fan motor, but the structure design of the stator of the fan motor in the related art has problems such as space waste and low effective volume utilization. SUMMARY
[0003] The utility model aims at at least one of the technical problems in the related art.
[0004] Therefore, the utility model embodiment proposes a kind of stator assembly, the stator assembly can reduce space waste and improve the overall utilization of effective volume, secondly, also realize the protection of stator winding, avoid the situation that stator winding is easily damaged, in addition, also shorten the path of magnetic force line in stator assembly, and then can realize the effect of reducing core loss.
[0005] The utility model embodiment further proposes a kind of motor comprising the above-mentioned stator assembly.
[0006] The utility model embodiment further proposes a kind of clothes drying equipment comprising the above-mentioned motor.
[0007] The stator assembly of the utility model embodiment comprises:
[0008] Stator core, the stator core includes a plurality of stator teeth and a plurality of yokes, a plurality of the stator teeth and a plurality of the yokes are alternately arranged along the circumference of the stator core, and the yoke is connected with the middle part of the stator tooth in the radial direction of the stator core;
[0009] Stator winding, the stator winding is wound on the outer circumferential side of the yoke and located between adjacent two stator teeth.
[0010] In some embodiments, the stator tooth includes a tooth portion and a protruding portion, the tooth portion protrudes to the inner side of the annular structure formed by a plurality of yokes, and the protruding portion protrudes to the outer side of the annular structure, and the stator winding is located between adjacent two tooth portions and adjacent two protruding portions in the circumferential direction.
[0011] In some embodiments, in the radial direction, the radial dimension of the outer edge of the stator winding is less than the radial dimension of the outer edge of the protruding portion.
[0012] In some embodiments, the plurality of teeth and the plurality of protrusions are arranged opposite to each other in the radial direction.
[0013] In some embodiments, the plurality of teeth and the plurality of protrusions are arranged staggered in the circumferential direction of the stator core.
[0014] In some embodiments, a first slot is formed between two adjacent teeth, and a second slot is formed between two adjacent protrusions, and the stator winding is fitted in the first slot and the second slot.
[0015] And / or, the ratio of the radial dimension of the outer edge of the yoke to the radial dimension of the outer edge of the protrusion is 0.83 to 0.87.
[0016] In some embodiments, in the radial direction of the stator core, the length dimension of the tooth is not less than the length dimension of the protrusion.
[0017] In some embodiments, a plastic package is included, which is wrapped on the outer circumferential side of the stator core to achieve insulation protection of the stator core.
[0018] In some embodiments, the stator teeth are wrapped in the plastic package, and the plastic package has a plastic outer wall wrapping the outer end of the stator teeth in the radial direction of the stator core, and the distance from the center of the stator core to the plastic outer wall is not less than the distance from the center of the stator core to the outer circumferential wall of the stator winding.
[0019] The motor of the embodiments of the present application comprises the stator assembly as described in any of the above embodiments.
[0020] The laundry drying apparatus of the embodiments of the present application comprises the motor as described in any of the above embodiments.
[0021] The stator assembly, the motor and the laundry drying apparatus of the embodiments of the present application can reduce space waste and improve the overall utilization rate of the effective volume, and secondly, the protection of the stator winding is also realized, avoiding the situation that the stator winding is easily damaged, in addition, the path of the magnetic force line in the stator assembly is also shortened, thereby the effect of reducing the core loss can be realized. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 is a schematic diagram of the overall structure of the stator assembly of the embodiments of the present application.
[0023] Figure 2 is Figure 1 is a schematic diagram of the stator core.
[0024] Figure 3 is a schematic diagram of the stator assembly of the embodiments of the present application installed with a plastic package.
[0025] Reference signs:
[0026] 1 - stator core; 11 - stator tooth; 111 - tooth portion; 112 - protruding portion; 12 - yoke portion; 13 - first slot; 14 - second slot;
[0027] 2 - stator winding; 21 - outer circumferential wall;
[0028] 3 - plastic package; 31 - plastic package outer wall. DETAILED DESCRIPTION
[0029] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.
[0030] The present application is made based on the inventor's discovery and understanding of the following facts and problems:
[0031] In the related art, the outer circumferential surface of the yoke portion and the outer circumferential surface of the tooth portion are generally flush, and the stator slot located inside the yoke portion is formed between the two adjacent tooth portions. When the stator winding is wound around the outer circumferential side of the yoke portion, the inner side of the stator winding will only occupy a small stator slot space, resulting in a large amount of idle space in the stator slot, thereby wasting space and reducing the utilization rate of the overall effective volume.
[0032] Secondly, the outer side of the stator winding will protrude from the outer circumferential side of the yoke portion. At this time, due to the protruding exposure of the stator winding, damage to the stator winding is likely to occur during the production line turnover and BMC plastic packaging process, thereby easily leading to the scrapping of the stator assembly and reducing the yield during processing.
[0033] As shown in Figure 1 , the stator assembly of the embodiment of the present application comprises a stator core 1 and a stator winding 2.
[0034] The stator core 1 comprises a plurality of stator teeth 11 and a plurality of yoke portions 12, the plurality of stator teeth 11 and the plurality of yoke portions 12 are alternately arranged along the circumferential direction of the stator core 1, and the yoke portion 12 is connected with the stator tooth 11 at the middle portion in the radial direction of the stator core 1.
[0035] For example, as shown in Figure 2 , the stator core 1 as a whole can be a circular ring structure, the number of stator teeth 11 and yoke portions 12 can be the same, the plurality of stator teeth 11 and the plurality of yoke portions 12 can be integrally formed, and the plurality of stator teeth 11 and the plurality of yoke portions 12 can be alternately arranged and connected along the circumferential direction of the stator core 1. Each stator tooth 11 can generally extend along the radial direction of the stator core 1, and each yoke portion 12 can be a circular arc type and extend along the circumferential direction of the stator core 1.
[0036] In the radial direction of the stator core 1, the end of the yoke portion 12 in the circumferential direction of the stator core 1 can be connected to the middle position of each of the stator teeth 11, that is, a part of each of the stator teeth 11 can be located on the inner side of the yoke portion 12, and another part of each of the stator teeth 11 can be located on the outer side of the yoke portion 12.
[0037] The stator winding 2 is wound on the outer circumferential side of the yoke portion 12 and located between two adjacent stator teeth 11. For example, the stator winding 2 can be an enameled wire or the like, and the stator winding 2 can be installed on the outer circumferential side of the yoke portion 12 by winding, and in the circumferential direction of the stator core 1, the stator winding 2 can be located between two adjacent stator teeth 11.
[0038] Compared with the case that the outer end surface of the yoke portion 12 and the stator tooth 11 is designed to be flush in the prior art, the yoke portion 12 as a whole is close to the center position of the stator core 1, that is, the yoke portion 12 is connected to the middle of each of the stator teeth 11. Therefore, the stator winding 2 wound on the outer circumferential side of the yoke portion 12 is also close to the center of the stator core 1 relative to the stator tooth 11, so that the stator winding 2 can substantially fill the space between the two stator teeth 11 located on the inner side of the yoke portion 12, thereby avoiding space waste and improving the overall utilization rate of the effective volume.
[0039] Secondly, since the stator winding 2 is close to the center of the stator core 1, the outer side of the stator winding 2 can be clamped between the two stator teeth 11 located on the outer side of the yoke portion 12, and the stator tooth 11 can shield and protect the stator winding 2, thereby avoiding the case that the stator winding 2 is easily damaged during processing, and improving the yield of production.
[0040] In addition, compared with the yoke portion 12 in the related art, the overall radius of the yoke portion 12 in the embodiment of the utility model is reduced, so that the size of the yoke portion 12 part inside the stator winding 2 is reduced, and the path of the magnetic force line passing through the yoke portion 12 is also reduced, thereby also playing a role in reducing core loss.
[0041] In some embodiments, the stator tooth 11 includes a tooth portion 111 and a protruding portion 112, the tooth portion 111 protrudes to the inner side of the annular structure formed by the plurality of yoke portions 12, and the protruding portion 112 protrudes to the outer side of the annular structure, and the stator winding 2 is located between two adjacent tooth portions 111 and two adjacent protruding portions 112 in the circumferential direction of the yoke portion 12.
[0042] For example, as shown in FIG. 1, the stator core 1 includes a plurality of yoke portions 12 and a plurality of stator teeth 11, and the stator winding 2 is wound on the outer circumferential side of the yoke portion 12 and located between two adjacent stator teeth 11. Figure 2As shown, the multiple yokes 12 can collectively form a ring-like structure. The teeth 111 can be considered as the portion of the stator teeth 11 located on the inner circumference of the ring structure, and the protrusions 112 can be considered as the portion of the stator teeth 11 located on the outer circumference of the ring structure 12. The teeth 111 of the multiple stator teeth 11 can be arranged at equal intervals along the circumference of the yoke 12, and the protrusions 112 of the multiple stator teeth 11 can also be arranged at equal intervals along the circumference of the yoke 12.
[0043] The stator winding 2 can be wound around the outer periphery of the portion of the yoke 12 between the two stator teeth 11, and the portion of the stator winding 2 located inside the yoke 12 can be clamped between the two teeth 111, while the portion of the stator winding 2 located outside the yoke 12 can be clamped between the two protrusions 112. Thus, the stator winding 2 can be protected by the shielding effect of the two protrusions 112.
[0044] In some embodiments, the radial dimension of the outer edge of the stator winding 2 is smaller than the radial dimension of the outer edge of the protrusion 112.
[0045] For example, such as Figure 2 As shown, the radial dimension of the outer edge of the protrusion 112 can be a radius R0, such as... Figure 3 As shown, the radial dimension of the outer edge of the stator winding 2 can be radius R2, and radius R0 is larger than radius R2, so that the stator winding 2 does not protrude radially from the protrusion 112. Thus, the protruding protrusion 112 can effectively protect the stator winding 2, preventing it from being easily damaged. In some embodiments, multiple teeth 111 and multiple protrusions 112 are arranged opposite each other radially in the yoke 12. For example, as... Figure 2 As shown, along the radial direction of the yoke 12, each protrusion 112 can be arranged one-to-one on the outside of each tooth 111, thereby allowing the spacing between two adjacent teeth 111 and the spacing between two adjacent protrusions 112 to be arranged facing each other, which facilitates the winding arrangement of the stator winding 2.
[0046] In some embodiments, a plurality of teeth 111 and a plurality of protrusions 112 are staggered in the circumferential direction of the stator core 1. For example, along the circumferential direction of the stator core 1, each tooth 111 and each protrusion 112 are staggered, that is, each tooth 111 and each protrusion 112 are not directly opposite each other in the radial direction of the stator core 1. For example, each tooth 111 and each protrusion 112 has a certain central angle between them. In this case, the stator winding 2 can be wound around the outer periphery of the yoke 12 between an adjacent tooth 111 and protrusion 112. While ensuring that the stator teeth protect the stator winding, the space occupied by the stator is further saved, and the overall utilization rate of the effective volume is improved.
[0047] In some embodiments, such as Figure 2 As shown, a first groove 13 is formed between two adjacent teeth 111, and a second groove 14 is formed between two adjacent protrusions 112. Both the first groove 13 and the second groove 14 are generally rectangular grooves. The stator winding 2 is fitted into the first groove 13 and the second groove 14. That is, the portion of the stator winding 2 located inside the yoke 12 can be embedded in the first groove 13, and the portion of the stator winding 2 located outside the yoke 12 can be embedded in the second groove 14. The stator winding 2 can generally fill the first groove 13 and the second groove 14, thereby improving the utilization rate of the space between two adjacent stator teeth 11 and avoiding space waste.
[0048] In some embodiments, the ratio of the radial dimension of the outer edge of the yoke 12 to the radial dimension of the outer edge of the protrusion 112 is 0.83 to 0.87.
[0049] For example, such as Figure 2 As shown, the radial dimension of the outer edge of the yoke 12 can be radius R, and the radial dimension of the outer edge of the protrusion 112 can be radius R0. The ratio of radius R to radius R0 can be 0.83, 0.84, 0.85, 0.86, 0.87, etc., thus satisfying the structural design requirement of offsetting the yoke 12 towards the inner side of the stator tooth 11, while also limiting the dimensional ratio of the offset of the yoke 12, thereby facilitating the standardization of stator core 1 machining. In some embodiments, the length dimension of the tooth 111 along the radial direction of the stator core 1 is not less than the length dimension of the protrusion 112. For example, as... Figure 2 As shown, the length of the tooth 111 can be L1, and the length of the protrusion 112 can be L2, where L1 can be greater than L2. Since the outer side of the protrusion 112 is covered with plastic coating 3, the shorter length of the protrusion 112 allows the overall length of the protrusion 112 after being covered with plastic coating 3 to be roughly the same as that of the tooth 111, thereby improving the matching between the inner and outer parts of the stator winding 2 after winding.
[0050] In some embodiments, the stator assembly includes a plastic-coated body 3, which wraps around the outer periphery of the stator core 1 to provide insulation protection for the stator core 1. For example, as Figure 3 As shown, the two axially opposite sides of the tooth 111, the two axially opposite sides of the yoke 12, and all the outer surfaces of the protrusion 112 can be wrapped by the plastic coating 3, thereby fully ensuring the insulation and protection performance of the stator core 1.
[0051] In some embodiments, the stator teeth 11 are wrapped in the plastic body 3, the plastic body 3 has a plastic outer wall 31 wrapping the outer end of the stator teeth 11 in the radial direction of the stator core 1, the distance between the plastic outer wall 31 and the center of the stator core 1 is not less than the distance between the outer peripheral wall 21 of the stator winding 2 and the center of the stator core 1.
[0052] For example, as shown in Figure 3 The distance between the plastic outer wall 31 and the center of the stator core 1 can correspond to a radius R1, and the distance between the outer peripheral wall 21 of the stator winding 2 and the center of the stator core 1 can correspond to a radius R2, the radius R1 can be slightly greater than the radius R2, so that the stator winding 2 can be completely blocked in the circumferential direction, and the protection effect of the stator winding 2 is fully guaranteed.
[0053] The motor of the present application is described below.
[0054] The motor of the present application is described below.
[0055] The drying equipment of the present application is described below.
[0056] The drying equipment of the present application is described below.
[0057] Although the above embodiments have been shown and described, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and changes, modifications, replacements and variations of the above embodiments made by those skilled in the art are within the scope of the present application.
Claims
1. A stator assembly characterized by, The stator core comprises a plurality of stator teeth and a plurality of yokes, the plurality of stator teeth and the plurality of yokes are arranged alternately along a circumferential direction of the stator core, and the yokes are connected to the middle of the stator teeth in a radial direction of the stator core. The stator winding is wound on an outer circumferential side of the yoke and located between two adjacent stator teeth. The stator tooth comprises a tooth portion and a protruding portion, the tooth portion protrudes to an inner side of a ring structure formed by the plurality of yokes, and the protruding portion protrudes to an outer side of the ring structure, and the stator winding is located between two adjacent tooth portions and two adjacent protruding portions in the circumferential direction.
2. The stator assembly of claim 1, wherein, In the radial direction, a radial dimension of an outer edge of the stator winding is smaller than a radial dimension of an outer edge of the protruding portion.
3. The stator assembly of claim 2, wherein, The plurality of tooth portions and the plurality of protruding portions are arranged opposite to each other in the radial direction.
4. The stator assembly of claim 2, wherein, The plurality of tooth portions and the plurality of protruding portions are arranged in a staggered manner in the circumferential direction of the stator core.
5. The stator assembly of claim 2, wherein, A first slot is formed between two adjacent tooth portions, and a second slot is formed between two adjacent protruding portions, and the stator winding is fitted in the first slot and the second slot.
6. The stator assembly of claim 2, wherein, And / or, a ratio of a radial dimension of an outer edge of the yoke to a radial dimension of an outer edge of the protruding portion is 0.83 to 0.
87. In the radial direction of the stator core, a length dimension of the tooth portion is not less than a length dimension of the protruding portion.
7. The stator assembly of claim 2, wherein, The stator core is wrapped by a plastic body on an outer circumferential side of the stator core to achieve insulation protection of the stator core.
8. The stator assembly of any one of claims 1-7, wherein, The stator tooth is wrapped in the plastic body, the plastic body has a plastic outer wall wrapping an outer end of the stator tooth in the radial direction of the stator core, and a distance between the plastic outer wall and a center of the stator core is not less than a distance between an outer circumferential wall of the stator winding and the center of the stator core.
9. The stator assembly of claim 8, wherein, The stator assembly comprises any one of the stator assemblies according to claims 1-9.
10. An electric machine characterized by The motor comprises the motor according to claim 10. 11.A clothes drying apparatus, characterized by,