Stator, motor, compressor and refrigeration equipment

Abstract

The invention discloses a stator, a motor, a compressor and refrigeration equipment, and relates to the technical field of compressors, the stator is used for the motor, the stator comprises a stator core, an insulating end plate and ribs, the stator core comprises a stator yoke and stator teeth, the stator teeth are arranged at intervals along the inner side of the stator yoke, and each stator tooth comprises a tooth body part and a tooth boot part; the insulating end plate is arranged at the end part of the stator core, the insulating end plate comprises an outer insulating plate, an inner insulating plate and a connecting plate connected between the outer insulating plate and the inner insulating plate, the outer insulating plate is arranged on the stator yoke, the connecting plate is arranged on the tooth body part, the inner insulating plate is arranged on the tooth boot part, and the tooth body part and the connecting plate are wound with a winding; the ribs are arranged on one side, deviating from the stator core, of the connecting plate, and are also connected with the inner wall surface of the outer insulating plate so as to limit the outermost winding to be close to the inner wall surface of the outer insulating plate; according to the technical scheme provided by the invention, the voltage endurance capability between the enameled wires of the winding can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a stator, a motor, a compressor and a refrigeration device. Background Art

[0002] In traditional winding manufacturing, enameled wire is tightly wound layer by layer around a bobbin. However, the outermost layer of enameled wire is subjected to the greatest compressive stress during the winding process, which can easily cause scratches or damage to the insulating enamel layer. This damage can degrade the insulation performance between the enameled wires, leading to electrical faults such as inter-turn short circuits, affecting the winding's withstand voltage and service life, increasing production costs and scrap rates. Summary of the Invention

[0003] The main purpose of the present invention is to provide a stator, a motor, a compressor and a refrigeration device, aiming to improve the pressure resistance between the winding enameled wires.

[0004] To achieve the above-mentioned object, the present invention provides a stator for a motor, the stator comprising: The stator core includes a stator yoke and stator teeth, wherein a plurality of stator teeth are spaced apart along the inner side of the stator yoke, and each stator tooth includes a tooth body portion and a tooth shoe portion; an insulating end plate, provided at an end of the stator core, the insulating end plate comprising an outer insulating plate, an inner insulating plate, and a connecting plate connected between the outer insulating plate and the inner insulating plate, the outer insulating plate being provided on the stator yoke, the connecting plate being provided on the tooth body, the inner insulating plate being provided on the tooth shoe, and windings being wound around the tooth body and the connecting plate; A rib is provided on a side of the connecting plate away from the stator core, and the rib is also connected to the inner wall surface of the outer insulating plate to limit the outermost winding from approaching the inner wall surface of the outer insulating plate.

[0005] In one embodiment, the number of stator slots of the motor is Q, the number of phases of the motor is m, the number of ribs is k1, m≤k1≤Q*n, and 1≤n≤3.

[0006] In one embodiment, a plurality of ribs are provided on the connecting plate, and the ribs are symmetrically arranged about a geometric center line of the connecting plate.

[0007] In one embodiment, the outer radius of the outer insulating plate is d1, the inner radius of the outer insulating plate is d2, the outer radius of the inner insulating plate is d3, the inner radius of the inner insulating plate is d4, and 0.1≤(d1-d2) / (d3-d4)≤2.

[0008] In one embodiment, the shortest distance from the rib to the center of the stator is d5, and 0.1≤(d1-d2) / (d2-d5)≤2.

[0009] In one embodiment, the height of the outer insulating plate is h1, the height of the inner insulating plate is h2, the height of the rib is h3, and 0.1≤(h1-h3) / (h2-h3)≤2.

[0010] In one embodiment, the number of stator slots of the motor is Q, the width of the connecting plate is w1, 0.5≤ ≤1.5.

[0011] In one embodiment, the width of the rib is w2,0 <w2 / w1≤1。

[0012] In one embodiment, the ribs and the insulating end plates are integrally injection molded.

[0013] In one embodiment, the rib is configured as any one of a cylinder, a cuboid, and a polyhedron.

[0014] The present invention also provides a motor, which includes the stator described above.

[0015] The present invention also provides a compressor, which includes the motor as described above.

[0016] The present invention also provides a refrigeration device, which includes the compressor described above.

[0017] In the technical solution of the present invention, the stator includes a stator core, an insulating end plate and ribs. The insulating end plate is arranged at the end of the stator core, and windings are wound on the insulating end plate and the stator core to effectively isolate the windings and the end of the stator core to ensure the overall insulation performance.

[0018] Specifically, the insulating end plate includes an outer insulating plate, a connecting plate and an inner insulating plate. The connecting plate is connected between the outer insulating plate and the inner insulating plate, and is wound with windings together with the stator teeth of the stator core. The connecting plate is provided with ribs on the side away from the stator core. One end of the rib is connected to the inner wall surface of the outer insulating plate, and the other end is used to contact the outermost winding. Through the setting of the ribs, the outermost winding can be limited to approach the inner wall surface of the outer insulating plate, reducing the contact area between the outermost winding and the inner wall surface of the outer insulating plate, thereby minimizing the extrusion of the outermost enameled wire by the winding enameled wire during the winding process, reducing the possibility of damage to the winding enameled wire, thereby improving the pressure resistance between the winding enameled wires and improving the efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order 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 use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 A top view of an embodiment of an insulating end plate provided by the present invention; Figure 2 for Figure 1 Schematic diagram of the height dimensions of the middle and outer insulation boards; Figure 3 for Figure 1 Schematic diagram of the height dimensions of the middle and inner insulation panels; Figure 4 for Figure 1 Schematic diagram of the width dimensions of the middle connecting plate and ribs; Figure 5 A schematic structural diagram of an embodiment of a compressor provided by the present invention; Figure 6 Schematic diagram of the voltage resistance and motor efficiency of the present invention.

[0021] Description of Figure Numbers: 1. Compressor; 100. Motor; 10. Stator; 11. Stator core; 12. Insulation end plate; 121. Outer insulation plate; 122. Inner insulation plate; 123. Connecting plate; 13. Ribs; 20. Rotor; 30. Pump body parts; 40. Casing.

[0022] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0025] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] In traditional winding manufacturing, enameled wire is tightly wound layer by layer around a bobbin. However, the outermost layer of enameled wire is subjected to the greatest compressive stress during the winding process, which can easily cause scratches or damage to the insulating enamel layer. This damage can degrade the insulation performance between the enameled wires, leading to electrical faults such as inter-turn short circuits, affecting the winding's withstand voltage and service life, increasing production costs and scrap rates.

[0027] In order to solve this technical problem, the present invention proposes a stator 10 .

[0028] See also Figures 1 to 4 In one embodiment of the present invention, the stator 10 includes a stator core 11, an insulating end plate 12 and a rib 13. The stator core 11 includes a stator yoke and stator teeth. A plurality of stator teeth are arranged at intervals along the inner side of the stator yoke. The stator teeth include a tooth body and a tooth shoe. The insulating end plate 12 is provided at the end of the stator core 11. The insulating end plate 12 includes an outer insulating plate 121, an inner insulating plate 122 and a connecting plate 123 connected between the outer insulating plate 121 and the inner insulating plate 122. The insulating plate 121 is provided on the stator yoke, the connecting plate 123 is provided on the tooth body, the inner insulating plate 122 is provided on the tooth boot, and windings are wound on the tooth body and the connecting plate 123; the rib 13 is provided on the side of the connecting plate 123 away from the stator core 11, and the rib 13 is also connected to the inner wall surface of the outer insulating plate 121 to limit the outermost winding from approaching the inner wall surface of the outer insulating plate 121; thereby reducing damage to the outermost winding and improving the voltage resistance and reliability of the winding.

[0029] In the technical solution of the present invention, the stator 10 includes a stator core 11, an insulating end plate 12 and a rib 13. The insulating end plate 12 is arranged at the end of the stator core 11, and windings are wound on the insulating end plate 12 and the stator core 11 to effectively isolate the windings and the end of the stator core 11 to ensure the overall insulation performance.

[0030] Specifically, the insulating end plate 12 includes an outer insulating plate 121, a connecting plate 123 and an inner insulating plate 122. The connecting plate 123 is connected between the outer insulating plate 121 and the inner insulating plate 122, and is wound with a winding together with the stator teeth of the stator core 11. The connecting plate 123 is provided with a rib 13 on the side facing away from the stator core 11. One end of the rib 13 is connected to the inner wall surface of the outer insulating plate 121, and the other end is used to contact the outermost winding enameled wire. Through the setting of the rib 13, the outermost winding can be limited to approach the inner wall surface of the outer insulating plate 121, reducing the contact area between the outermost winding and the inner wall surface of the outer insulating plate 121, thereby minimizing the extrusion of the outermost enameled wire by the winding enameled wire during the winding process, reducing the possibility of damage to the winding enameled wire, thereby improving the pressure resistance between the winding enameled wires and improving the efficiency of the motor 100.

[0031] It should be noted that there are two insulating end plates 12, which are respectively arranged at both ends of the stator core 11, which can fix the winding ends and prevent the winding ends from colliding with each other and wearing due to vibration. Among them, the inner insulating plate 122 and the connecting plate 123 can constitute a connecting rib, which is adapted to the stator teeth, and a plurality of connecting ribs are arranged at intervals along the inner wall surface of the outer insulating plate 121. An installation groove is formed between two adjacent connecting ribs and the outer insulating plate 121. The installation groove is adapted to the winding slot of the stator core 11, which facilitates the winding of the stator core 11 and the insulating end plate 12. The limiting protrusion of the connecting plate 123 on the inner insulating plate 122 can limit the movement of the insulating paper in the winding slot to a certain extent, thereby ensuring the stable installation of the winding in the winding slot.

[0032] Furthermore, in the conventional winding manufacturing process, the enameled wire is tightly wound layer by layer around the stator core 11 and the insulating end plate 12. During this process, the enameled wire located in the outermost layer is subjected to the greatest extrusion stress. Therefore, by providing ribs 13 between the outermost layer of enameled wire and the inner wall surface of the outer insulating plate 121, the stress distribution can be changed, dispersing the stress originally concentrated on the outermost layer of enameled wire to a wider area. Thus, by rationally designing the shape and position of the ribs 13, the direct extrusion of the outermost layer of enameled wire can be effectively reduced, thereby reducing the risk of scratches and wear, improving the insulation performance between the winding enameled wires, and thus improving the voltage resistance of the winding, thereby improving the safety of the motor 100, and also helping to reduce maintenance costs and production scrap rates.

[0033] Optionally, in an embodiment of the present invention, the ribs 13 are integrally injection molded with the insulating end plates 12. Thus, by forming the ribs 13 and insulating end plates 12 in one piece through an integral injection molding process, not only can the production and assembly steps be reduced, saving production time and costs, but also, through precise mold design and injection molding process control, the consistency and accuracy of product dimensions can be ensured, thereby improving product quality. Furthermore, the connection strength and structural stability between the insulating end plates 12 and the ribs 13 can be enhanced, ensuring reliable restraint of the windings by the ribs 13.

[0034] Optionally, in an embodiment of the present invention, the rib 13 is configured as any one of a cylinder, a cuboid, and a polyhedron. When the rib 13 is a cylinder, the curved surface design of the cylinder can evenly distribute stress on the surface of the winding enameled wire, reducing local high stress areas. Furthermore, compared to sharp edges, the risk of the rib 13 scratching the winding enameled wire when in contact can be reduced. When the rib 13 is a cuboid, the structure is stable and the inner space of the outer insulating plate 121 can be rationally utilized, allowing it to fit more closely to the winding surface, resist pressure, and protect the enameled wire from damage. When the rib 13 is a polyhedron, during the winding process, the various faces of the polyhedron can disperse stress in different directions, reducing local stress concentration and, in turn, reducing the risk of the rib 13 scratching the winding enameled wire when in contact. Of course, other shapes that can reduce the risk of the rib 13 scratching the winding enameled wire when in contact are also applicable to this solution.

[0035] Optionally, in an embodiment of the present invention, the number of stator slots of the motor 100 is Q, the number of phases of the motor 100 is m, the number of ribs 13 is k1, m≤k1≤Q*n, and 1≤n≤3. In this way, according to the setting of the number of phases and the number of stator slots of the motor 100, the number of ribs 13 is reasonably designed to ensure that the outermost layer of each phase winding is stopped by the ribs 13, effectively reducing the direct extrusion of the outermost layer of enameled wire, thereby reducing the risk of scratches and wear, improving the insulation performance between the winding enameled wires, and then improving the voltage resistance of the winding, thereby improving the safety of use of the motor 100.

[0036] Furthermore, the number of ribs 13 on a connecting plate 123 can be set according to needs, and can be specifically 0, 1, 2 or 3. It can be understood that when k1=m, on the basis of ensuring that the outermost layer of each phase winding is stopped by the rib 13, the other connecting plates 123 may not be provided with ribs 13. When k1=Q*n, and n=1, each connecting plate 123 is provided with 1 rib 13, which helps to enhance the overall structural stability of the insulating end plate 12; when k1=Q*n, and n=2 or 3, each connecting plate 123 is provided with 2 or 3 ribs 13 at intervals, which helps to increase the connection area between the outermost layer of winding enameled wire and the rib 13, and further minimizes the extrusion of the outermost layer of enameled wire by the winding enameled wire during the winding process, reduces the possibility of damage to the winding enameled wire, thereby improving the pressure resistance between the winding enameled wires and improving the efficiency of the motor 100.

[0037] Specifically, in an embodiment of the present invention, a plurality of the ribs 13 are provided on the connecting plate 123, and each of the ribs 13 is symmetrically arranged about the geometric center line of the connecting plate 123. In this way, the connection stability between the connecting plate 123 and the outer insulating plate 121 is ensured while minimizing the extrusion of the outermost layer of the enameled wire of the winding during the winding process, thereby improving the overall structural stability of the insulating end plate 12.

[0038] When the number of ribs 13 is odd, the middle rib 13 is located on the geometric centerline of the connecting plate 123, and the remaining ribs 13 are symmetrically distributed with the centerline as the axis of symmetry. When the number of ribs 13 is even, all ribs 13 are symmetrically distributed with the geometric centerline as the axis of symmetry, and no rib 13 is located on the centerline.

[0039] See also Figure 1 In an embodiment of the present invention, the outer radius of the outer insulating plate 121 is d1, the inner radius of the outer insulating plate 121 is d2, the outer radius of the inner insulating plate 122 is d3, and the inner radius of the inner insulating plate 122 is d4, and 0.1≤(d1-d2) / (d3-d4)≤2.

[0040] It can be understood that d1 is the distance between the outer wall surface of the outer insulating plate 121 and the geometric center of the insulating end plate 12, d2 is the distance between the inner wall surface of the outer insulating plate 121 and the geometric center of the insulating end plate 12, d1-d2 refers to the radial thickness of the outer insulating plate 121, that is, the wall thickness of the outer insulating plate 121, d3 is the distance between the outer wall surface of the inner insulating plate 122 and the geometric center of the insulating end plate 12, d4 is the distance between the inner wall surface of the inner insulating plate 122 and the geometric center of the insulating end plate 12, d3-d4 refers to the radial thickness of the inner insulating plate 122, that is, the wall thickness of the inner insulating plate 122. By limiting the wall thickness ratio of the outer insulating plate 121 and the inner insulating plate 122 (d1-d2) / (d3-d4), the slot area and distribution of the stator slots can be indirectly controlled.

[0041] When (d1-d2) / (d3-d4) is greater than 2, the wall thickness of the outer insulating plate 121 is too thick, the stator yoke is largely occupied, the slot area of ​​the stator slot is significantly reduced, the winding filling is restricted, resulting in a low slot fill rate, increased resistance, and increased loss; the wall thickness of the inner insulating plate 122 is too thin, which is prone to cracks; when (d1-d2) / (d3-d4) is less than 0.1, the wall thickness of the inner insulating plate 122 is too thick, the tooth body and tooth shoe are largely occupied, the slot area of ​​the stator slot is significantly reduced, the slot mouth is narrow, and the wire embedding is difficult, resulting in a low slot fill rate and tooth body magnetic field. The path becomes narrower and the loss increases; the wall thickness of the outer insulating plate 121 is too thin, which is prone to deformation and the winding end is easily impacted by centrifugal force; therefore, the wall thickness ratio (d1-d2) / (d3-d4) is limited to between 0.1 and 2, the thickness of the outer insulating plate 121 and the inner insulating plate 122 is balanced, and there is enough space for the stator yoke and the stator teeth, which reduces the occupation of the slot area, maximizes the slot area, facilitates wire embedding, and reduces energy consumption. In addition, it helps to improve the overall structural stability of the insulating end plate 12, thereby improving the efficiency and reliability of the motor 100.

[0042] Among them, the specific values ​​of the wall thickness ratio (d1-d2) / (d3-d4) include but are not limited to 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 08, 0.9, 1, 1.1, 1.2, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, and 2.

[0043] See also Figure 1 In an embodiment of the present invention, the shortest distance from the rib 13 to the center of the stator 10 is d5, 0.1≤(d1-d2) / (d2-d5)≤2.

[0044] It can be understood that d1-d2 refers to the radial thickness of the outer insulating plate 121, that is, the wall thickness of the outer insulating plate 121, d5 is the distance between the end of the rib 13 away from the outer insulating plate 121 and the geometric center of the insulating end plate 12, d2-d5 refers to the radial thickness of the rib 13, that is, the protruding depth of the rib 13, and by limiting the wall thickness ratio of the outer insulating plate 121 and the rib 13 (d1-d2) / (d2-d5), the slot area and distribution of the stator slot can be indirectly controlled.

[0045] When (d1-d2) / (d2-d5) is greater than 2, the wall thickness of the outer insulating plate 121 is too thick, the stator yoke is largely occupied, the slot area of ​​the stator slot is significantly reduced, the winding filling is limited, resulting in a low slot fill rate, increased resistance, and increased loss; the protruding depth of the rib 13 is too shallow, and the effect of reducing the extrusion of the outermost layer of the winding enameled wire is poor, and the outermost layer of the winding enameled wire is prone to scratches and wear; when (d1-d2) / (d2-d5) is less than 0.1, the wall thickness of the outer insulating plate 121 is too thin, which is prone to deformation and is also prone to causing the rib 13 to be on the outer insulation. The connection of the edge plate 121 is broken; the protrusion depth of the rib 13 is too deep, the winding space of the enameled wire is occupied, and the effective stroke of the winding nozzle entering the slot in the radial direction is "cut off in advance". For this reason, the winding nozzle can only be lifted earlier or changed in angle to avoid interference with the rib 13, resulting in the number of turns that can be arranged in the same layer being forced to be reduced; while maintaining the specified number of turns, the number of winding layers is large, but the inner and outer layers of the winding enameled wire squeeze each other, which easily increases the risk of wear and reduces the insulation performance between the winding enameled wires. At the same time, it is difficult to embed the wire, the slot fill rate is artificially high, and the actual heat dissipation path is blocked.

[0046] Therefore, the wall thickness ratio (d1-d2) / (d2-d5) of the outer insulating plate 121 and the rib 13 is limited to between 0.1 and 2. The wall thickness of the outer insulating plate 121 and the protruding depth of the rib 13 are balanced, which reduces the occupation of the slot area, maximizes the slot area, and has low energy consumption. At the same time, it is convenient for wire embedding, ensures that the winding nozzle has sufficient radial stroke, does not increase the number of layers, and arranges the enameled wire neatly, effectively avoiding extrusion and paint film damage, improving the insulation performance between the winding enameled wires, and thus improving the voltage resistance of the winding. In addition, it helps to improve the overall structural stability of the insulating end plate 12, thereby improving the efficiency and reliability of the motor 100.

[0047] Among them, the specific values ​​of the wall thickness ratio (d1-d2) / (d2-d5) of the outer insulating plate 121 and the rib 13 include but are not limited to 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 08, 0.9, 1, 1.1, 1.2, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, and 2.

[0048] See also Figure 2 and Figure 3In the embodiment of the present invention, the height of the outer insulating plate 121 is h1, the height of the inner insulating plate 122 is h2, the height of the rib 13 is h3, and 0.1≤(h1-h3) / (h2-h3)≤2.

[0049] It can be understood that h1-h3 refers to the remaining height of the outer insulating plate 121 excluding the ribs 13, and h2-h3 refers to the remaining height of the inner insulating plate 122 excluding the ribs 13. By limiting the remaining height ratio (h1-h3) / (h2-h3) of the outer insulating plate 121 and the inner insulating plate 122 to between 0.1 and 2, the heights of the outer insulating plate 121, the inner insulating plate 122, and the ribs 13 are matched, that is, the height of the ribs 13 is higher than the height of the stacked layers of the winding enameled wire, and not lower than the height of the outer insulating plate 121, thereby ensuring that the winding enameled wire is stopped by the ribs 13, and there is no possibility that the winding enameled wire of other layers will contact and press against the outer insulating plate 121, thereby reducing the risk of scratches and wear of the winding, thereby improving the insulation performance between the winding enameled wires, and thereby improving the voltage resistance of the winding.

[0050] Among them, the specific values ​​of the remaining height ratio (h1-h3) / (h2-h3) of the outer insulating plate 121 and the inner insulating plate 122 include but are not limited to 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 08, 0.9, 1, 1.1, 1.2, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, and 2.

[0051] See also Figure 4 In the embodiment of the present invention, the number of stator slots of the motor 100 is Q, the width of the connecting plate 123 is w1, 0.5≤ ≤1.5.

[0052] It can be understood that since the number of connecting plates 123 corresponds to the number of stator slots, that is, the number of the two is equal, w1*Q is the total arc length occupied by all connecting plates 123 in the circumferential direction, and π(d2+d3) is the circumference of the insulating end plate 12 at the "average radius of the slot" (approximately the average diameter of the inner and outer circles).

[0053] K= When K is greater than 1.5, the connecting plate 123 is too wide, and the slot is largely occupied by the connecting plate 123, making it difficult for the winding nozzle to enter, resulting in difficulty in embedding the wire and forcing the number of layers to increase. At the same time, the enameled wires closest to the edges of the connecting plate 123 on both sides will be forced to move toward the center of the slot or the outer diameter due to insufficient space, which makes it easy for the winding enameled wires to squeeze each other, resulting in the risk of scratches and wear, and reducing the insulation performance between the winding enameled wires; when K is less than 0.5, the connecting plate 123 is too narrow, resulting in poor rigidity, easy deformation, and inability to fully isolate the winding ends, thereby affecting the insulation effect.

[0054] Therefore, by limiting K between 0.5 and 1.5, the width of the connecting plate 123 is moderate, reducing the occupation of the slot area, maximizing the slot area, and having low energy consumption. At the same time, it is convenient for wire insertion, ensuring that the wire winding nozzle has sufficient radial travel, without increasing the number of layers, the enameled wires are arranged neatly, effectively avoiding extrusion and damage to the paint film, improving the insulation performance between the enameled wires of the winding, and then enhancing the voltage withstand capacity of the winding. Moreover, it helps to improve the overall structural stability of the insulating end plate 12, thereby improving the efficiency and service reliability of the motor 100.

[0055] Furthermore, in the embodiment of the present invention, the width of the rib 13 is w2, where 0 < w2 / w1 ≤ 1. This width is the circumferential dimension of the rib 13 along the circumferential direction. When the width of the rib 13 is too wide, the enameled wires of the winding will yield towards the only remaining space, that is, they will be extruded towards the tooth root or the rotor direction, easily causing the innermost enameled wires of the winding to be close to the tooth root, increasing the local pressure, and raising the risk of being scratched and worn. It is also easy for the whole winding to bulge towards the air gap side, reducing the effective air gap, and even causing rubbing with the rotor. When the width of the rib 13 is too narrow, the effect of reducing the extrusion on the outermost layer of the enameled wires of the winding is poor, and the outermost enameled wires of the winding are prone to the risk of being scratched and worn.

[0056] Therefore, by reasonably controlling the width ratio of the rib 13 to the connecting plate 123, reducing the occupation of the slot area, the slot area can be maximized, with low energy consumption. It can also prevent the enameled wires of the winding from being extruded towards the rotor or bulging outwards to affect the air gap, ensuring the overall service reliability of the motor 100. At the same time, it is convenient for wire insertion, ensuring that the wire winding nozzle has sufficient movement space, without increasing the number of layers, the enameled wires are arranged neatly, effectively avoiding extrusion and damage to the paint film, improving the insulation performance between the enameled wires of the winding, and then enhancing the voltage withstand capacity of the winding, and improving the efficiency of the motor 100.

[0057] In summary, as Figure 6 shown, by designing the structural dimensions of the insulating end plate 12, that is, its protruding depth and width, the extrusion of the enameled wires of the winding on the outermost enameled wires during the winding process can be minimized, reducing the possibility of damage to the enameled wires of the winding, thereby improving the voltage withstand capacity between the enameled wires of the winding and enhancing the efficiency of the motor 100.

[0058] The present invention also proposes a motor 100, which includes a stator 10. The specific structure of the stator 10 refers to the above embodiments. Since this motor 100 adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated here one by one.

[0059] The present invention also provides a compressor 1, which includes a motor 100. The specific structure of the motor 100 is referred to the above embodiment. Since the compressor 1 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described in detail here. Figure 5 As shown, the compressor 1 includes a housing 40 , in which a stator 10 , a rotor 20 disposed inside the stator 10 , and a pump body component 30 connected to the rotor 20 are disposed.

[0060] The present invention also proposes a refrigeration device, which includes a compressor 1. The specific structure of the compressor 1 refers to the above embodiment. Since this refrigeration device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0061] The above description is merely an exemplary embodiment of the present invention and does not limit the scope of protection of the present invention. Any equivalent structural transformation made by using the contents of the present invention description and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the scope of protection of the present invention.

Claims

1. A stator for a motor, characterized in that: include: The stator core includes a stator yoke and stator teeth, wherein a plurality of stator teeth are spaced apart along the inner side of the stator yoke, and each stator tooth includes a tooth body portion and a tooth shoe portion; an insulating end plate, provided at an end of the stator core, the insulating end plate comprising an outer insulating plate, an inner insulating plate, and a connecting plate connected between the outer insulating plate and the inner insulating plate, the outer insulating plate being provided on the stator yoke, the connecting plate being provided on the tooth body, the inner insulating plate being provided on the tooth shoe, and windings being wound around the tooth body and the connecting plate; A rib is provided on a side of the connecting plate away from the stator core, and the rib is also connected to the inner wall surface of the outer insulating plate to limit the outermost winding from approaching the inner wall surface of the outer insulating plate.

2. The stator according to claim 1, characterized in that The number of stator slots of the motor is Q, the number of phases of the motor is m, the number of ribs is k1, m≤k1≤Q*n, and 1≤n≤3.

3. The stator according to claim 2, characterized in that The connecting plate is provided with a plurality of ribs, and the ribs are symmetrically arranged about the geometric center line of the connecting plate.

4. The stator according to claim 1, wherein: The outer radius of the outer insulating plate is d1, the inner radius of the outer insulating plate is d2, the outer radius of the inner insulating plate is d3, the inner radius of the inner insulating plate is d4, and 0.1≤(d1-d2) / (d3-d4)≤2.

5. The stator according to claim 4, characterized in that The shortest distance from the rib to the center of the stator is d5, 0.1≤(d1-d2) / (d2-d5)≤2.

6. The stator according to claim 4, characterized in that The height of the outer insulating plate is h1, the height of the inner insulating plate is h2, the height of the rib is h3, and 0.1≤(h1-h3) / (h2-h3)≤2.

7. The stator according to claim 4, characterized in that The number of stator slots of the motor is Q, the width of the connecting plate is w1, 0.5≤ ≤1.

5.

8. The stator according to claim 7, characterized in that The width of the rib is w2,0 <w2 / w1≤1。 9. The stator according to claim 1, wherein: The ribs and the insulating end plate are integrally injection-molded.

10. The stator according to claim 1, wherein: The ribs are configured in any one of a cylinder, a cuboid and a polyhedron.

11. A motor, characterized in that: Comprising the stator according to any one of claims 1 to 10.

12. A compressor, characterized in that: Comprising the motor as claimed in claim 11.

13. A refrigeration device, characterized in that: Comprising the compressor of claim 12.

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