Stator framework, motor and air conditioner

Abstract

The invention provides a stator framework, a motor and an air conditioner, the stator framework comprises a winding part, one end of the winding part is provided with a mounting hole, and the mounting hole is used for mounting stator teeth of a stator core; and the winding groove is formed in the peripheral wall of the winding part, and the winding groove is used for winding a winding. According to the invention, the technical problem that in the prior art, when the stator winding is demolded and detached from the winding mold, the winding is easily deformed or scratched, and the motor is easily short-circuited can be solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioners, and in particular relates to a stator frame, a motor, and an air conditioner. Background Art

[0002] Regarding a new motor with a stepless shoe and fractional slots used in air-conditioning compressors, when wiring the stator, if the interphase wires and wiring ends are arranged at the ends of the winding, they will block the flow area within some slots. The flow area in the middle of the stator slots must meet the flow of the compressor oil and gas. A smaller flow area will lead to reduced compressor performance. If the flow area is arranged outside the end circle, there may be certain electrical safety hazards. The winding is pre-wound on the winding mold and then inserted into the stator teeth either sequentially or simultaneously with the slot insulation. The winding is tightened by an interference fit with the stator teeth. After winding, the winding needs to be removed from the winding mold. This process may cause deformation and scratches to the formed winding. The interference fit between the winding and the stator teeth may cause the slot insulation to break under pressure, losing its insulation protection and making the motor prone to short circuit. Because the motor has a certain amount of vibration during operation, the interference fit between the winding and the stator teeth can easily lead to interference failure during long-term operation, further exacerbating the motor vibration. In severe cases, the winding will fall off and the motor will burn. The soft slot insulation is welded by the end edge and the straight edge, which is a complicated process. When the winding is inserted into the stator teeth, the straight edge needs to be straightened to prevent the slot insulation from deforming or failing to fit in the slot, thereby losing insulation protection for the winding.

[0003] Since the stator winding in the prior art is easily deformed and scratched when it is demolded from the winding mold, and the slot insulation is easily compressed and damaged when the winding and the stator teeth have an interference fit, which makes the motor prone to short circuit and other technical problems, the present invention studies and designs a stator frame, a motor, and an air conditioner. Summary of the Invention

[0004] Therefore, the present invention provides a stator frame, a motor, and an air conditioner, which can solve the technical problem in the prior art that the stator winding is easily deformed or scratched when it is demolded from the winding mold, causing the motor to be easily short-circuited.

[0005] In order to solve the above problems, the present invention provides a stator frame, comprising:

[0006] A winding portion, one end of which is provided with a mounting hole for mounting a stator tooth of a stator core;

[0007] A winding groove is provided on the outer peripheral wall of the winding portion, and the winding groove is used for winding a winding.

[0008] In some embodiments, the mounting hole passes through the winding portion along the direction from one end of the winding portion to the other end of the winding portion, the winding groove is annular, and a tooth guard assembly is provided at one end of the winding portion. The tooth guard assembly is arranged opposite to the winding groove, and the tooth guard assembly is used to limit the winding in the winding groove.

[0009] In some embodiments, along the circumference of the stator core, the width of the winding is d1, the inner diameter of the stator core is D1, the slot width of the stator core is d2, the number of stator slots of the stator core is S, and the sum of the widths of the tooth guard assembly and the winding portion is d3, which satisfies d3>d1, d1<d2<(D1+4)*sin(180° / S).

[0010] In some embodiments, two routing portions are provided at the other end of the winding portion. Along the axial direction of the stator core, one routing portion is located at one end of the stator core, and the other routing portion is located at the other end of the stator core. Along the circumference of the stator core, a plurality of wire slots are provided on the routing portion.

[0011] In some embodiments, the number of the wire slots is N, which satisfies N=S / m, where m is the number of motor phases and S is the number of stator slots.

[0012] In some embodiments, there are three wire passing slots, which are respectively a first slot, a second slot, and a third slot. The first slot, the second slot, and the third slot are arranged in sequence along the radial outward direction of the stator core. The depths of the first slot, the second slot, and the third slot gradually decrease. The first slot, the second slot, and the third slot extend along the circumference of the stator core, and the first slot, the second slot, and the third slot pass through the wiring portion.

[0013] In some embodiments, a plurality of connecting grooves are provided on the wiring portion along the circumference of the stator core, and the connecting grooves are connected to the first slot, the second slot, and the third slot in sequence along the radial direction of the stator core, and a plurality of through holes are provided on the side walls of the second slot and the third slot.

[0014] In some embodiments, two second protrusions are provided at one end of the routing portion facing the winding portion, and along the circumference of the stator core, one second protrusion is located on one side of the winding portion, and the other second protrusion is located on the other side of the winding portion. A mounting groove is provided on the second protrusion, and along the axial direction of the stator core, the mounting groove passes through the second protrusion, and the open end of the mounting groove faces the winding portion.

[0015] In some embodiments, along the axial direction of the stator core, the second protrusion has an upper end and a lower end, and the minimum distance between the upper end and the wire slot is h3, which satisfies h3>0; along the circumferential direction of the stator core, the inner wall width of the wiring portion is d4, the outer wall width of the wiring portion is d5, and the outer diameter of the stator core is D2, which satisfies d4<d5<D2*sin(180° / S), where S is the number of stator slots of the stator core.

[0016] In some embodiments, on one of the routing portions, the minimum distance between two of the second protrusions is d6, and along the axial direction of the rotor core, the sum of the widths of the tooth guard assembly and the winding portion is d3, which satisfies d6>d3.

[0017] In some embodiments, the stator frame further includes a separator, wherein the separator is located between two adjacent winding parts, and the winding is located between the separator and the winding parts.

[0018] In some embodiments, the partition includes two straight sides, one side of the two straight sides is connected, the side where the two straight sides are connected forms a notch, and the other side of the straight sides is provided with a flange, which can be inserted into the installation groove.

[0019] In some embodiments, along the circumference of the stator core, the width of the mounting hole is t3, and the maximum width of the stator tooth is t2, which satisfies t3>t2;

[0020] Along the axial direction of the stator core, the length of the mounting hole is L1, and the height of the stator core is L, which satisfies the condition L1>L.

[0021] The present invention provides a motor including the above-mentioned stator frame.

[0022] In some embodiments, a buckle is provided at one end of the wiring portion facing away from the winding portion, and a slot is provided at the end of the stator core. When the stator frame is installed on the stator core, the buckle is engaged with the slot.

[0023] In some embodiments, a stator slot is formed between two adjacent stator teeth, and a third baffle is provided at the slot opening of the stator slot. When the stator frame further includes a separator, the separator is located outside the third baffle along the radial direction of the stator core.

[0024] The present invention also provides an air conditioner comprising the above-mentioned motor.

[0025] The stator frame, motor, and air conditioner provided by the present invention have the following beneficial effects:

[0026] The stator teeth of the stator core are directly installed in the mounting holes through the mounting holes, which simplifies the winding process of the winding, reduces the process damage of the winding, and simplifies the installation process of the winding and the stator, thereby improving production efficiency. The winding is directly wound in the winding slot of the skeleton on the winding tool. The winding is not restricted by space, and the wire diameter and winding form of the winding are also not restricted. The winding does not need to be disassembled after winding, which not only reduces the process but also ensures that the winding will not be damaged during the process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. The drawings described below are merely exemplary. Those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0028] Figure 1 This is a schematic diagram of the structure of the stator frame of the present invention Figure 1 ;

[0029] Figure 2 This is a schematic diagram of the structure of the stator frame of the present invention Figure 2 ;

[0030] Figure 3 This is a schematic diagram of the structure of the stator frame of the present invention Figure 3 ;

[0031] Figure 4 This is a schematic diagram of the structure of the stator frame of the present invention Figure 4 ;

[0032] Figure 5 is a top view of the stator frame of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the stator frame of the present invention Figure 5 ;

[0034] Figure 7 The stator frame assembly structure of the present invention is Figure 1 ;

[0035] Figure 8 The stator frame assembly structure of the present invention is Figure 1 ;

[0036] Figure 9 1 is a schematic structural diagram of a stator core in a motor according to another embodiment of the present invention;

[0037] Figure 10 It is a structural schematic diagram of a separator in a stator frame of the present invention;

[0038] Figure 11 This is a structural diagram of the assembly of the separators in the stator frame of the present invention.

[0039] The accompanying drawings are:

[0040] 1. Winding part; 2. Routing part; 3. Winding groove; 4. Mounting hole; 5. First baffle; 6. Second baffle; 7. Wire passing groove; 8. Connecting groove; 9. Through hole; 10. Mounting groove; 11. Buckle; 12. Stator core; 13. Winding; 14. Slot; 15. Channel; 16. Third baffle; 17. Separator; 18. Side wall; 19. Lower end edge; 20. Support member; 21. First protrusion; 22. Inclined surface; 23. Groove; 24. First groove; 25. Second groove; 26. Third groove; 27. Stator frame; 28. Straight edge; 29. ​​Notch; 30. Flanged edge; 31. Stator tooth. DETAILED DESCRIPTION

[0041] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0043] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0044] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0045] See also Figure 1-11 As shown, according to an embodiment of the present invention, a stator frame is provided, comprising:

[0046] A winding portion 1, one end of which is provided with a mounting hole 4, wherein the mounting hole 4 is used to mount the stator teeth 31 of the stator core 12;

[0047] The winding groove 3 is provided on the outer peripheral wall of the winding portion 1 and is used for winding the winding 13. In this technical solution, the stator teeth 31 of the stator core 12 are directly installed in the mounting holes 4 through the mounting holes 4, which simplifies the winding process of the winding 13, reduces the process damage of the winding 13, and simplifies the installation process of the winding 13 and the stator, thereby improving production efficiency. The winding 13 is directly wound in the skeleton winding groove 3 on the winding tool. The winding 13 is not restricted by space, and the wire diameter and winding form of the winding 13 are also not restricted. After winding, there is no need to disassemble and assemble the winding 13, which not only reduces the process but also ensures that the winding will not be damaged during the process.

[0048] In some embodiments, the mounting hole 4 passes through the winding portion 1 along the direction from one end of the winding portion 1 to the other end of the winding portion 1, the winding groove 3 is annular, and a tooth guard assembly is provided at one end of the winding portion 1. The tooth guard assembly is arranged opposite to the winding groove 3, and the tooth guard assembly is used to limit the winding 13 in the winding groove 3.

[0049] The tooth guard assembly can not only limit the winding 13, but also protect the winding 13 from leaking out of the winding part 1. The tooth guard assembly is used to isolate the stator core and play an insulating protection role.

[0050] Furthermore, the winding portion 1 is a rectangular parallelepiped structure, and the outer peripheral wall of the winding portion 1 includes an upper side wall, a lower side wall, a left side wall and a right side wall. The upper side wall, the lower side wall, the left side wall and the right side wall are all provided with the winding groove 3, and the winding groove 3 of the upper side wall, the winding groove 3 of the lower side wall, the winding groove 3 of the left side wall and the winding groove 3 of the right side wall are connected in sequence, and the winding groove 3 is annular.

[0051] The mouthguard assembly includes a first baffle 5 and a second baffle 6. There are two first baffles 5 and two second baffles 6. One first baffle 5 is opposite to the winding groove 3 on the left side wall, the other first baffle 5 is opposite to the winding groove 3 on the right side wall, one second baffle 6 is opposite to the winding groove 3 on the upper side wall, and the other second baffle 6 is opposite to the winding groove 3 on the lower side wall, thereby limiting the winding 13 of the winding groove 3. One end of the first baffle 5 is connected to the winding part 1, and the other end extends away from the winding part 1. One end of the second baffle 6 is connected to the winding part 1, and the other end extends away from the winding part 1.

[0052] There is a first angle between the first baffle 5 and the bottom of the winding groove 3, which is an obtuse angle. There is a second angle between the second baffle 6 and the bottom of the winding groove 3, which is an obtuse angle, to facilitate winding.

[0053] In some embodiments, along the circumference of the stator core 12, the width of the winding 13 is d1, the inner diameter of the stator core 12 is D1, the slot width of the stator core 12 is d2, the number of stator slots of the stator core 12 is S, and the sum of the widths of the tooth guard assembly and the winding portion 1 is d3, which satisfies the following conditions: d3>d1, d1<d2<(D1+4)*sin(180° / S). In this technical solution, by ensuring that d3>d1, the insulation between the slot bottom winding and the stator core is ensured, ensuring a sufficient electrical safety distance between the two; and 1<d2<(D1+4)*sin(180° / S), the insulation between the winding at the slot and the stator core is ensured, ensuring a sufficient electrical safety distance, while at the same time not making d2 too large to interfere with the normal installation of the frame.

[0054] In some embodiments, two wiring portions 2 are provided at the other end of the winding portion 1. Along the axial direction of the stator core 12, one wiring portion 2 is located at one end of the stator core 12, and the other wiring portion 2 is located at the other end of the stator core 12. Along the circumference of the stator core 12, a plurality of wire grooves 7 are provided on the wiring portion 2. In this technical solution, the mounting hole 4 is located between the two wiring portions 2. The width of the wiring portion 2 is greater than the width of the winding portion 1. Along the axial direction of the stator core 12, the wiring portion 2 at least partially extends out of the winding portion 1. The wire grooves 7 are used for wire passing, routing, and wiring of the interphase winding 13. Depending on the motor winding scheme, the wires passing through each tooth may cross each other in order to avoid contact between wires of different phases.

[0055] In some embodiments, the number of the wire slots 7 is N, which satisfies N=S / m, where m is the number of motor phases and S is the number of stator slots.

[0056] In some embodiments, there are three wire routing slots 7, namely a first slot 24, a second slot 25, and a third slot 26. These slots 7 are arranged in sequence radially outward from the stator core 12, with their depths gradually decreasing. These slots 24, 25, and 26 extend circumferentially along the stator core 12, and each slot 24, 25, and 26 penetrates the wiring portion 2. In this technical solution, the number N of wire routing slots satisfies N = S / m, where m is the number of motor phases. The depth of the wire routing slots decreases from the inner diameter to the outer diameter of the stator, i.e., the depth of the wire routing slots decreases in the following order: wire routing slot 1 > wire routing slot 2 > wire routing slot 3 > ... > wire routing slot N. By limiting the depth of the wire routing slots, the outer wire routing slots are prevented from contacting the inner wire routing slots, maintaining a sufficient safety distance.

[0057] In some embodiments, the wiring portion 2 is provided with multiple connecting slots 8 along the circumference of the stator core 12. Along the radial direction of the stator core 12, the connecting slots 8 sequentially connect to the first slot 24, the second slot 25, and the third slot 26. Multiple through-holes 9 are provided on the sidewalls of the second and third slots 25, 26. In this technical solution, the connecting slots 8 facilitate the avoidance of contact between the wires at intersections. To further secure and organize the wires, multiple through-holes 9 are provided on the sidewalls of the second and third slots 25, 26 to facilitate securing the wires with lashing ropes. The first slot 24 is formed by the wiring portion 2 at the other end of the winding portion 1, with the other end of the winding portion 1 forming a sidewall of the first slot 24.

[0058] In some embodiments, two second protrusions are provided on one end of the routing portion 2 facing the winding portion 1, and along the circumference of the stator core 12, one second protrusion is located on one side of the winding portion 1, and the other second protrusion is located on the other side of the winding portion 1. A mounting groove 10 is provided on the second protrusion, and along the axial direction of the stator core 12, the mounting groove 10 passes through the second protrusion, and the open end of the mounting groove 10 faces the winding portion 1.

[0059] In some embodiments, along the axial direction of the stator core 12, the second protrusion has an upper end and a lower end, and the minimum distance between the upper end and the wire slot 7 is h3, which satisfies h3>0; along the circumferential direction of the stator core 12, the inner wall width of the wiring portion 2 is d4, the outer wall width of the wiring portion 2 is d5, and the outer diameter of the stator core 12 is D2, which satisfies d4<d5<D2*sin(180° / S), where S is the number of stator slots of the stator core 12. In this technical solution, two mounting grooves 10 are respectively arranged on both sides of the wiring portion 2 close to the inner diameter side of the stator. The side walls 118 of the mounting grooves 10 are not higher than the side walls of the wiring portion 2, ensuring that the interphase insulation mounting grooves will not interfere with the installation of the skeleton and will not occupy too much flow area in the stator slots; the lower end edge 19 of the mounting grooves 10 is not higher than the lower end surface of the wiring portion 2, ensuring that it will not interfere with the installation of the skeleton; h3>0 is to ensure that the mounting grooves 10 will not interfere with the innermost wire passing groove.

[0060] In some embodiments, the minimum distance between two second protrusions on a single routing portion 2 is d6, and the sum of the widths of the tooth guard assembly and the winding portion 1 along the axial direction of the rotor core 12 is d3, satisfying the condition d6>d3. In this technical solution, the minimum distance between two second protrusions on the same routing portion 2 is d6, and the sum of the widths of the tooth guard assembly and the winding portion 1 along the axial direction of the rotor core 12 is d3, satisfying the condition d6>d3. This ensures that the second protrusions do not interfere with the frame installation.

[0061] In some embodiments, the stator frame further includes a separator 17, which is positioned between two adjacent winding sections 1. The winding 13 is positioned between the separator 17 and the winding section 1. In this technical solution, the separator 17 has a triangular cross-section and serves as interphase insulation. Interphase insulation refers to the insulation between two phase windings within the same stator slot.

[0062] In some embodiments, the separator 17 includes two straight sides 28, one side of the two straight sides 28 is connected, and the side where the two straight sides 28 are connected forms a notch portion 29. The other side of the straight side 28 is provided with a flange 30, and the flange 30 can be inserted into the mounting slot 10. In this technical solution, the separator 17 is installed in the mounting slot 10 in an inverted triangle shape, with the notch portion 29 located at the stator notch, the bottom of the slot located at the bottom of the stator slot, and both ends inserted into the mounting slot 10. The straight sides 29 fit the winding, and the length of the separator 17 is sufficient, and the ends of the separator 17 do not exceed the bottom of the innermost wire slot of the frame. It is best. The sides of the two-phase winding in the stator slot are shaped like two sides of an inverted triangle, and the separator 17 ensures insulation between these two sides; the triangular design also provides a certain stability for the phase-to-phase insulation; the ends of the separator 17 do not exceed the bottom of the innermost wire slot of the frame to prevent interference with the wire passing, and the wire passing can also have a certain limiting effect on the phase-to-phase insulation in the axial direction. Separator 17 is made of a thick polyester film. Mounting slots 10 are provided on the stator frame. Separator 17 is inserted into the slots from one end of the stator. Once installed, its two flanges 30 fit into the mounting slots 10 on the stator frame at both ends. Only the ends of separator 17 are in the stator frame's interphase insulation mounting slots, while the majority of the middle portion is in the stator slots.

[0063] The stator frame of the present invention comprises a winding portion 1 and a routing portion 2. The winding portion 1 includes mounting holes, winding slots, and a tooth guard assembly. The mounting holes are first used for installation in a winding tool for winding, and then for inserting the winding and frame into the stator teeth. The winding slots are used for winding, and the tooth guard assembly is used to protect the winding ends from leaking out, isolating the stator core and providing insulation. The routing portion 2 is located at both ends of the frame and includes clips, wire slots, through-holes, and mounting slots. The clips assemble with the stator core slots to secure the entire frame to the stator. The wire slots are used for interphase wire routing and connection, the through-holes are used for tying and securing interphase wires, and the phase mounting slots are used for installing separators.

[0064] In some embodiments, along the circumference of the stator core 12 , the width of the mounting hole 4 is t3 , and the maximum width of the stator tooth 31 is t2 , which satisfies the following: t3 > t2 ;

[0065] Along the axial direction of the stator core 12, the length of the mounting hole 4 is L1, and the height of the stator core 12 is L, which satisfies L1>L. In this technical solution, t3>t2, L1>L ensures that the frame mounting hole 4 can pass through the stator teeth, otherwise the frame cannot be installed.

[0066] The stator frame of the present invention comprises a winding section 1 and a wiring section 2. The winding section 1 includes mounting holes 4, winding slots 3, and a tooth guard assembly. The mounting holes are first used for mounting on a winding tool for winding, and then for inserting stator teeth to install the frame and winding. The winding is wound directly into the winding slots of the frame teeth. The tooth guard assembly serves to limit and regularize the winding. Secondly, after the frame is installed in the stator teeth, the tooth guard assembly adheres to the stator slot wall and provides insulation. The wiring part 2 is located at both ends of the skeleton, including buckles, wire grooves, through holes and installation slots; the functions of the wiring part 2 are: one is to fix the entire skeleton + winding, the second is to facilitate the wiring of the wires between the motor windings, and the third is to be used for the installation of phase insulation; the buckles are assembled with the stator core slots to fix the entire skeleton to the stator. It has a self-locking function, and the support arm has a certain elasticity. During installation, the first protrusion is squeezed by the iron core, and the support arm is subjected to force so that the first protrusion is pressed into the end of the skeleton, and the skeleton can be inserted into the stator teeth. When the skeleton is inserted into place, the support arm is no longer subjected to force, and the first protrusion pops out and just extends into the skeleton mounting hole of the stator core. One side of the first protrusion is a smooth inclined surface, which is convenient for the protrusion to be installed when the skeleton is installed. The opposite side of the inclined surface is a straight edge. After the frame is installed in place, it supports the side wall of the core mounting hole to achieve self-locking. The wire groove is used for the wire passing, routing and wiring of the phase winding. According to the different motor winding schemes, the wires passing through each tooth will cross. In order to avoid contact between wires of different phases, the depth of the wire groove is designed according to different depths. At the same time, a connecting groove is designed to facilitate the wires to not touch at the intersection. At the same time, in order to further fix and organize the wires, a through hole is also designed to facilitate the fixing of the wires with binding ropes. Phase insulation mounting grooves are designed on both sides of the frame end. The same frame has 2 ends, and there are a total of 4 phase insulation mounting grooves. The interphase insulation mounting grooves are used for the bottom installation of the phase insulation groove.

[0067] The cross-section of the separator is triangular, divided into a notch portion, a flange portion and a straight edge portion. The separator is inserted axially into the stator slot from one end of the stator, with the notch portion located at the notch, the flange portion located at the bottom of the stator slot and both ends inserted into the mounting slot. The separator is made of polyester film material, which still has a certain elasticity after bending. The straight edge portion of the interphase insulation will fit the winding, and the flange portion will also generate static friction with the inner wall of the mounting slot. Because the separator will not exceed the innermost wire slot, the winding will form an axial limit on the separator when passing through the wire slot. In this way, the interphase insulation is fixed in the slot by three means.

[0068] In order to enable the skeleton to be installed and fixed on the stator core, slots are opened on the yoke of the stator core, and both ends of the core need to be opened. The number of slots opened at each end is equal to the number of teeth; the size and depth of the slots need to ensure that the skeleton clips can extend into them and form self-locking.

[0069] When the motor stator is connected, the inter-phase wires and the wire ends are distributed in the skeleton routing part, which will not block the flow area of ​​the channel 15 in the stator slot, and can provide sufficient flow area to meet the flow of compressor oil and gas, thereby improving the performance of the compressor. The winding is directly wound in the skeleton winding slot on the winding tool. First, the winding is not restricted by space, and the wire diameter and winding form of the winding are also not restricted. After winding, there is no need to disassemble and assemble the winding, which reduces the process and ensures that the winding will not be damaged during the process. The skeleton is installed on the stator core by snap-fitting, which greatly simplifies the installation process and ensures the reliability of the winding installation. The tooth guard assembly replaces the original slot insulation and has no interference fit with the stator teeth, which can effectively ensure the reliability of the insulation in the slot; the separator can further ensure the reliability of the phase insulation.

[0070] The present invention further provides a motor, comprising the stator frame 27 described above.

[0071] The motor of the present invention includes the above-mentioned stator frame 27. The stator frame 27 simplifies the winding process of the winding, reduces the process damage of the winding, and simplifies the installation process of the winding and stator, thereby improving production efficiency. At the same time, the frame is used for wiring and wire routing, which simplifies the wire routing and wiring process of the stator winding, and can also completely eliminate the problem of the motor flow hole being blocked due to wiring, thereby increasing the motor flow area and thus improving the performance of the compressor. The slot insulation design is eliminated, and a new phase insulation that is easy to assemble is designed. The assembly method between the winding and the stator is optimized, and a more reliable and simpler self-locking installation scheme is proposed, thereby improving the electrical safety and long-term operating reliability of the motor and increasing the service life of the compressor. The compressor performance can be improved; the stator production process cost can be reduced; the winding process damage can be reduced, and the part process scrap rate can be reduced; the electrical safety of the motor can be improved; the long-term operating reliability of the motor can be improved, and the service life of the compressor can be increased.

[0072] In some embodiments, a buckle 11 is provided at one end of the wiring portion 2 facing away from the winding portion 1, and a slot 14 is provided at the end of the stator core 12. When the stator frame 27 is mounted on the stator core 12, the buckle 11 engages with the slot 14. In this technical solution, the stator teeth 31 can pass through the mounting hole 4. Preferably, the stator teeth 31 partially extend outside the mounting hole 4. A groove 23 is provided at one end of the wiring portion 2 facing away from the winding portion 1, and the open end of the groove 23 faces away from the winding portion 1, and the groove 23 passes through the side of the wiring portion 2 facing away from the end of the stator core 12. The buckle 11 has a self-locking function and is divided into a first protrusion 21 and a support arm 20. The support arm 20 has a certain elasticity. One side of the first protrusion 21 is a smooth inclined surface 22, and the other side is a straight edge. When the skeleton is inserted into the stator tooth, the inclined surface 22 of the first protrusion 21 first contacts the stator core and is pressed into the end of the skeleton under force. After the skeleton is inserted into place, the first protrusion 21 pops out and just extends into the slot 14 of the core. The straight edge of the first protrusion 21 fits into the core mounting hole to complete self-locking. The protrusion 21 extends to a height of h1, satisfying 0

[0073] The outer circle of the stator core is a perfect circle and the slot has no pole shoe. The stator teeth can be parallel teeth or non-parallel teeth, where the slot bottom tooth width t2 and the slot tooth width t1 satisfy 0<t1≤t2. There are slots at both ends of the yoke for installing the frame, and the number of slots at each end is equal to the number of stator teeth.

[0074] In some embodiments, a stator slot is formed between two adjacent stator teeth 31. A third baffle 16 is provided at the slot opening of the stator slot. When the stator frame further includes a separator 17, the separator 17 is located radially outward of the third baffle 16 of the stator core 12. In this technical solution, the third baffle 16 is a magnetic slot wedge, which can compensate for the high cogging torque and performance loss caused by an overly wide slot opening.

[0075] The present invention also provides an air conditioner comprising the above-mentioned motor.

[0076] It is easy for those skilled in the art to understand that, under the premise of no conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0077] ​The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention. The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and variations without departing from the technical principles of the present invention, and such improvements and variations shall also be considered within the scope of protection of the present invention.

Claims

1. A stator frame, Features: include: A winding portion (1), one end of the winding portion (1) being provided with a mounting hole (4), the mounting hole (4) being used for mounting a stator tooth (31) of a stator core (12); A winding groove (3), wherein the winding groove (3) is arranged on the outer peripheral wall of the winding portion (1), and the winding groove (3) is used for winding a winding (13).

2. The stator frame according to claim 1, Features: The mounting hole (4) passes through the winding portion (1) in a direction from one end of the winding portion (1) to the other end of the winding portion (1); the winding groove (3) is annular; a tooth guard assembly is provided at one end of the winding portion (1); the tooth guard assembly is arranged opposite to the winding groove (3); and the tooth guard assembly is used to limit the winding (13) in the winding groove (3).

3. The stator frame according to claim 2, Features: Along the circumference of the stator core (12), the width of the winding (13) is d1, the inner diameter of the stator core (12) is D1, the slot width of the stator core (12) is d2, the number of stator slots of the stator core (12) is S, and the sum of the widths of the tooth guard assembly and the winding portion (1) is d3, which satisfies the following conditions: d3>d1, d1<d2<(D1+4)*sin(180° / S).

4. The stator frame according to claim 2, Features: The other end of the winding portion (1) is provided with two wiring portions (2); along the axial direction of the stator core (12), one of the wiring portions (2) is located at one end of the stator core (12), and the other wiring portion (2) is located at the other end of the stator core (12); along the circumference of the stator core (12), a plurality of wire passing grooves (7) are provided on the wiring portion (2).

5. The stator frame according to claim 4, Features: The number of the wire passing slots (7) is N, which satisfies the condition that N=S / m, where m is the number of motor phases and S is the number of stator slots.

6. The stator frame according to claim 4, Features: There are three wire-passing grooves (7), which are respectively a first groove (24), a second groove (25), and a third groove (26). The first groove (24), the second groove (25), and the third groove (26) are arranged in sequence along the radial outward direction of the stator core (12). The depths of the first groove (24), the second groove (25), and the third groove (26) gradually decrease. The first groove (24), the second groove (25), and the third groove (26) extend along the circumferential direction of the stator core (12), and the first groove (24), the second groove (25), and the third groove (26) penetrate the wiring portion (2).

7. The stator frame according to claim 6, Features: A plurality of connecting grooves (8) are provided on the wiring portion (2) along the circumferential direction of the stator core (12); along the radial direction of the stator core (12), the connecting grooves (8) are connected in sequence to the first groove (24), the second groove (25), and the third groove (26); and a plurality of through holes (9) are provided on the side walls of the second groove (25) and the third groove (26).

8. The stator frame according to claim 4, Features: Two second protrusions are provided at one end of the wiring portion (2) facing the winding portion (1); along the circumference of the stator core (12), one of the second protrusions is located on one side of the winding portion (1), and the other second protrusion is located on the other side of the winding portion (1); a mounting groove (10) is provided on the second protrusion; along the axial direction of the stator core (12), the mounting groove (10) passes through the second protrusion, and the open end of the mounting groove (10) faces the winding portion (1).

9. The stator frame according to claim 8, Features: Along the axial direction of the stator core (12), the second protrusion has an upper end and a lower end, and the minimum distance between the upper end and the wire slot (7) is h3, which satisfies h3>0; along the circumferential direction of the stator core (12), the inner wall width of the wiring portion (2) is d4, the outer wall width of the wiring portion (2) is d5, and the outer diameter of the stator core (12) is D2, which satisfies d4<d5<D2*sin(180° / S), where S is the number of stator slots of the stator core (12).

10. The stator frame according to claim 8, Features: On one of the wiring portions (2), the minimum distance between two of the second protrusions is d6, and along the axial direction of the rotor core (12), the sum of the widths of the tooth guard assembly and the winding portion (1) is d3, which satisfies the condition that d6>d3.

11. The stator frame according to claim 8, Features: The stator frame further comprises a separator (17), wherein the separator (17) is located between two adjacent winding parts (1), and the winding (13) is located between the separator (17) and the winding part (1).

12. The stator frame according to claim 11, Features: The separator (17) comprises two straight edge portions (28), one side of the two straight edge portions (28) are connected, the edge where the two straight edge portions (28) are connected forms a notch portion (29), and the other side of the straight edge portion (28) is provided with a flange (30), and the flange (30) can be inserted into the installation groove (10).

13. The stator frame according to claim 1, Features: Along the circumference of the stator core (12), the width of the mounting hole (4) is t3, and the maximum width of the stator tooth (31) is t2, which satisfies the condition that t3>t2; Along the axial direction of the stator core (12), the length of the mounting hole (4) is L1, and the height of the stator core (12) is L, which satisfies the condition that L1>L.

14. A motor, It is characterized in that The invention comprises a stator frame (27) according to any one of claims 1 to 13.

15. The electric machine according to claim 14, Features: A buckle (11) is provided at one end of the wiring portion (2) facing away from the winding portion (1), and a slot (14) is provided at the end of the stator core (12); when the stator frame (27) is mounted on the stator core (12), the buckle (11) is engaged with the slot (14).

16. The electric machine according to claim 14, Features: A stator slot is formed between two adjacent stator teeth (31), and a third baffle (16) is provided at the slot opening of the stator slot. When the stator frame further includes a partition (17), the partition (17) is located outside the third baffle (16) along the radial direction of the stator core (12).

17. An air conditioner, It is characterized in that A motor comprising the motor described in any one of claims 14 to 16.

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