Insulating skeleton, motor stator, motor and compressor

Abstract

The utility model discloses a kind of insulation framework, motor stator, motor and compressor, insulation framework is used to install to the end of motor stator, the insulation framework includes outer wall, inner wall and winding part, winding part connects inner wall and outer wall, winding area is equipped between inner wall and outer wall, winding part includes the first side surface towards winding area and the second side surface away from winding area, first side surface includes first face, second face and third face, first face connects inner wall, second face connects outer wall, the interval H1 of first face and second side surface along the set axis, the interval H2 of second face and second side surface along the set axis and the interval H3 of third face and second side surface along the set axis satisfy: H1> H2;And / or, H1> H3.The insulation framework according to the utility model embodiment, by first face connecting inner wall, second face connects outer wall, effectively reduce the stress concentration of winding part connecting inner wall and outer wall, to improve the mechanical strength of insulation framework.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to an insulating frame, a motor stator, a motor, and a compressor. Background Technology

[0002] In related technologies, compressor motors typically use an insulating frame for electrical insulation. The thickness of the winding portion of the insulating frame affects the height of the stator winding at that section. Reducing the stator winding height and its resulting copper losses is an important solution for improving motor efficiency. However, the insulating frame must withstand the forces exerted on it by the stator windings. The thickness of the winding portion directly determines the structural strength of the insulating frame. During the winding process, if the insulating frame is too thin, it is prone to breakage, leading to insulation failure. Furthermore, the mechanical strength of the insulating frame is relatively low. Utility Model Content

[0003] One objective of this invention is to provide an insulating frame, a motor stator, a motor, and a compressor, wherein a first part is connected to the inner wall and a second part is connected to the outer wall, which effectively reduces stress concentration at the connection between the inner and outer walls of the winding part, thereby improving the mechanical strength of the insulating frame.

[0004] An insulating frame according to an embodiment of the present invention is used for mounting to the end of a motor stator. The insulating frame includes an outer wall, an inner wall, and a winding portion. The outer wall extends around a predetermined axis, and the inner wall is closer to the predetermined axis than the outer wall. The winding portion connects the inner wall and the outer wall. A winding area is provided between the inner wall and the outer wall. The winding portion includes a first side facing the winding area and a second side facing away from the winding area. The first side includes a first face portion, a second face portion, and a third face portion. The first face portion connects to the inner wall, the second face portion connects to the outer wall, and the third face portion connects between the first face portion and the second face portion. The distance H1 between the first face portion and the second face portion along the predetermined axis, the distance H2 between the second face portion and the second face portion along the predetermined axis, and the distance H3 between the third face portion and the second face portion along the predetermined axis satisfy: H1 > H2; and / or, H1 > H3.

[0005] According to the embodiment of the present invention, the insulating skeleton is connected to the inner wall by the first part and to the outer wall by the second part, which effectively reduces the stress concentration between the inner and outer walls of the winding part, thereby improving the mechanical strength of the insulating skeleton.

[0006] In addition, the insulating frame according to the above embodiments of the present invention may also have the following additional technical features: In some embodiments, the first face is inclined toward the second side along a predetermined direction from the inner wall to the outer wall.

[0007] In some embodiments, the angle α between the first face and the side of the inner wall facing the outer wall satisfies: 115° > α > 95°.

[0008] In some embodiments, in a cross-section passing through the set axis, the angle α' between the first face and the set axis satisfies: 85°>α'>65°.

[0009] In some embodiments, the second face is inclined away from the second side along a predetermined direction from the inner wall to the outer wall.

[0010] In some embodiments, the angle β between the second face and the side of the outer wall facing the inner wall satisfies: 115° > β > 95°.

[0011] In some embodiments, in a cross-section passing through the set axis, the angle β' between the second face and the set axis satisfies: 85° > β' > 65°.

[0012] In some embodiments, the distance between the inner wall and the outer wall along a predetermined direction from the inner wall to the outer wall is L1, and the length of the third face along the predetermined direction is L2, wherein 0.8 > L2 / L1 > 0.6.

[0013] In some embodiments, one side edge of the first facet is connected to the side edge of the inner wall facing the outer wall, and one side edge of the second facet is connected to the side edge of the outer wall facing the inner wall; one end face of the inner wall along the set axis protrudes from the first side facet, and the other end facet is flush with or protrudes from the second side facet; one end face of the outer wall along the set axis protrudes from the first side facet, and the other end facet is flush with or protrudes from the second side facet.

[0014] In some embodiments, the minimum distance H3 between the third face and the second side satisfies: 1.5mm ≥ H3 ≥ 0.5mm.

[0015] In some embodiments, the third facet is connected to the first facet and the second facet along two sides of a predetermined direction from the inner wall to the outer wall, and the third facet is parallel to the second side; the first facet includes a plane or an arc surface; the second facet includes a plane or an arc surface.

[0016] In some embodiments, the second side is parallel to the end face of the motor stator.

[0017] In some embodiments, the second side is perpendicular to the predetermined axis.

[0018] According to an embodiment of the present invention, a motor stator includes a stator core, a stator winding, and the aforementioned insulating frame. The insulating frame is disposed on the end face of the stator core, and the stator winding passes through the winding area.

[0019] The motor according to an embodiment of the present invention includes the aforementioned motor stator.

[0020] The compressor according to an embodiment of the present invention includes the aforementioned motor. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the insulating frame in an embodiment of this utility model.

[0022] Figure 2 This is a top view of the insulating frame in an embodiment of this utility model.

[0023] Figure 3 yes Figure 2 A cross-sectional view along the AA direction.

[0024] Figure 4 This is a cross-sectional schematic diagram of the insulating frame in an embodiment of this utility model, with the stator winding passing through the winding area.

[0025] Figure 5 This is a cross-sectional schematic diagram of the insulation skeleton strength test in an embodiment of this utility model.

[0026] Figure 6 This is a cross-sectional schematic diagram of an insulating skeleton in the prior art, with the thickness of the first side and the second side being D.

[0027] Figure 7 This is a cross-sectional schematic diagram of an insulating skeleton in the prior art, with the thickness of the first side and the second side being d.

[0028] Figure 8 This is a comparison diagram of the insulation frame of this utility model embodiment and the winding strength and motor efficiency of various technical solutions.

[0029] Figure 9 This is a graph showing the included angle α of the insulating frame and the strength and motor efficiency at the first connection point in this embodiment of the present invention.

[0030] Figure 10 This is a graph showing the included angle β of the insulating frame in this embodiment of the invention, the strength at the second connection point, and the motor efficiency.

[0031] Figure 11 This is a graph showing the L2 / L1 ratio of the insulating frame, the strength of the winding section, and the motor efficiency in an embodiment of this utility model.

[0032] Figure 12This is a graph showing the relationship between H3 of the insulating frame, motor efficiency, and copper usage in an embodiment of this utility model.

[0033] Figure 13 This is a schematic diagram of the stator core of the motor stator in an embodiment of this utility model.

[0034] Reference numerals: Insulating frame 100, set axis P, outer wall 10, inner wall 20, winding section 30, first side 31, first face 311, second face 312, third face 313, second side 32, winding area 40, stator core 200, stator winding 300. Detailed Implementation

[0035] Figure 6 and Figure 7 The image shows an insulating frame in the related art, where the stator windings typically use copper wire. Figure 6 The spacing D between the first side 31' and the second side 32' of the insulating frame is relatively large to enhance the structural strength of the insulating frame. However, the height of the stator winding within the winding area (refer to...) Figure 6 The increase in the axial direction of the stator winding leads to an increase in the amount of copper used in the stator winding; Figure 7 The spacing d between the first side 31'' and the second side 32'' of the insulating frame is small, so that the stator winding is wound at the height of the winding section (reference). Figure 7 The axial direction of the insulator is reduced, thereby reducing the amount of copper used in the stator winding; however, the structural strength of the insulation skeleton is reduced, making it prone to breakage and damage.

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0037] Combination Figures 1 to 4According to an embodiment of the present invention, an insulating frame 100 is used to be installed at the end of a motor stator. The insulating frame 100 includes an outer wall 10, an inner wall 20, and a winding portion 30. The outer wall 10 extends around a set axis P (which can be the axis of the motor stator). The inner wall 20 is closer to the set axis P than the outer wall 10. The winding portion 30 connects the inner wall 20 and the outer wall 10. A winding area 40 is provided between the inner wall 20 and the outer wall 10. The stator winding 300 of the motor stator can be wound around the stator core and the insulating frame 100. The insulating frame 100 is located between the end face of the stator core and the stator winding 300 in the winding area 40. The portion of the stator winding 300 that passes over the end face of the stator core is located in the winding area 40. During motor operation, especially during motor start-up and stop, electromagnetic force causes the stator winding 300 to vibrate. The outer wall 10, inner wall 20, and winding section 30 can confine the stator winding 300 within the winding area 40, preventing the stator winding 300 from loosening, wearing, or popping out due to vibration. The outer wall 10, inner wall 20, and winding section 30 provide support for the stator winding 300, ensuring the stability of the shape and position of the stator winding 300.

[0038] The winding portion 30 includes a first side surface 31 facing the winding area 40 and a second side surface 32 facing away from the winding area 40. The first side surface 31 includes a first face portion 311, a second face portion 312, and a third face portion 313. The first face portion 311 is connected to the inner wall 20, the second face portion 312 is connected to the outer wall 10, and the third face portion 313 is connected between the first face portion 311 and the second face portion 312. The distance H1 between the first face portion 311 and the second side surface 32 along the set axis P, the distance H2 between the second face portion 312 and the second side surface 32 along the set axis P, and the distance H3 between the third face portion 313 and the second side surface 32 along the set axis P satisfy: H1 > H2; and / or, H1 > H3. In other words, the winding portion 30 includes a first end portion, a second end portion, and a middle portion. The middle portion is connected between the first end portion and the second end portion. The first end portion is connected to the inner wall, the second end portion is connected to the outer wall, and the thickness of the middle portion is less than the thickness of the first end portion at various points; or, the thickness of the middle portion is less than the thickness of the second end portion at various points.

[0039] In other words, combining Figure 4The following conditions must be met: H1 > H2; or H1 > H3; or H1, H2, and H3 must satisfy: H1 > H2 and H1 > H3. The distance H1 between any point on the first face 311 and the second side 32 along the set axis P is greater than the distance H3 between the third face 313 and the second side 32 along the set axis P, or the distance H1 between any point on the first face 311 and the second side 32 along the set axis P is greater than the distance H2 between any point on the second face 312 and the second side 32 along the set axis P. This ensures that the inner wall 20 and the winding part 30 have sufficient connection strength, and avoids the inner wall 20 from breaking or deforming when subjected to radial and axial forces.

[0040] For example, such as Figure 5 As shown, the insulating frame 100 and the motor stator are usually fitted with an interference fit. When the insulating frame 100 is installed at the end of the motor stator, it is usually necessary to apply a force along a set axis P (reference) to the insulating frame 100. Figure 5 An axial force F1 (in the direction of the axis in the motor) is applied to stably assemble the insulating frame 100 at the end of the motor stator; or, during high-speed automatic winding, the stator winding 300 is pulled tight with a large tension and embedded in the winding area 40, and the inner wall 20 must have sufficient mechanical strength and structural rigidity to withstand the radial force F2.

[0041] In conjunction with the foregoing, during installation or automatic winding, the aforementioned axial or radial forces are typically applied to the inner wall 20. Compared to the inner wall 20 being directly connected to the winding portion 30 at a right angle, the inner wall 20 is connected to the winding portion 30 via the first facet 311. When the inner wall 20 is subjected to axial or radial forces, these forces can be transmitted and dispersed to the first facet 311, reducing stress concentration at the connection between the inner wall 20 and the winding portion 30 and improving the connection strength between the inner wall 20 and the winding portion 30. At the same time, this reduces the probability of the inner wall 20 cracking or deforming, which is beneficial for extending the service life of the insulating frame 100.

[0042] Of course, the aforementioned axial or radial force may also be applied to the outer wall 10. The outer wall 10 and the third surface 313 are connected by the second surface 312. When the outer wall 10 is subjected to axial or radial force, the axial or radial force can be transmitted and dispersed to the second surface 312, reducing the stress concentration at the connection between the outer wall 10 and the winding portion 30 and improving the connection strength between the outer wall 10 and the winding portion 30. At the same time, it can reduce the possibility of cracking and deformation of the outer wall 10, which is beneficial to extending the service life of the insulating frame 100.

[0043] According to the embodiment of the present invention, the insulating frame 100 is connected to the inner wall 20 by the first facet 311 and the outer wall 10 by the second facet 312, which effectively reduces the stress concentration between the winding portion 30 and the inner wall 20 and the outer wall 10, thereby improving the mechanical strength of the insulating frame 100; at the same time, the insulating frame 100 provides support for the stator winding 300, ensuring the stability of the shape and position of the stator winding 300.

[0044] Combination Figure 4 and Figure 8 Compared to the insulating skeleton in the existing technology (refer to...) Figure 7 ) and the original insulation frame (refer to Figure 6 In this embodiment of the invention, the insulating frame 100 reduces the distance H3 between the third face 313 and the second side 32, while ensuring that the distances H1, H2, and H3 satisfy: H1 > H2; and / or H1 > H3. This results in the motor using the insulating frame 100 of this invention having higher motor efficiency, while ensuring that the insulating frame 100 has higher structural strength, reducing the possibility of cracks and deformations in the outer wall 10 and inner wall 20, and extending the service life of the insulating frame 100.

[0045] Combination Figure 3 and Figure 4 In some embodiments, the first face 311 is inclined toward the second side 32 along a predetermined direction from the inner wall 20 to the outer wall 10, ensuring that the inner wall 20 and the winding portion 30 smoothly transition through the first face 311, reducing stress concentration at the connection between the inner wall 20 and the winding portion 30, improving the structural strength of the inner wall 20, and at the same time helping to increase the winding space of the winding area 40.

[0046] The direction setting can be referenced. Figure 3 or Figure 4 In the predetermined direction, the first facet 311 can be considered as an inclined surface connecting the inner wall 20 and the third facet 313. Compared to the inner wall 20 being directly connected to the winding portion 30 at a right angle, the inner wall 20 and the third facet 313 are connected through the first facet 311. This effectively transfers the force on the inner wall 20 to the third facet 313, reducing stress concentration at the connection between the inner wall 20 and the winding portion 30, improving the connection strength between the inner wall 20 and the winding portion 30, preventing breakage and damage to the inner wall 20, and extending the service life of the insulating frame 100. Furthermore, compared to the stepped connection between the inner wall 20 and the winding portion 30, the inclined surface of the first facet 311 connects the inner wall 20 and the third facet 313, reducing the space occupied by the first facet 311 within the winding area 40, thus allowing the winding area 40 to have a larger winding space.

[0047] Combination Figure 3In some embodiments, the angle α between the first face 311 and the side of the inner wall 20 facing the outer wall 10 satisfies: 115° > α > 95°, where the value of α can be 98°, 100°, 105°, 107°, 110°, 112°, etc., combined with Figure 9 When 115° > α > 95°, the strength at the first connection between the inner wall 20 and the winding portion 30 is relatively high. When the inner wall 20 is subjected to a force (see attached...) Figure 5 When the force is F1 or F2, it can be transmitted to the first connection between the inner wall 20 and the winding part 30. Due to the thickening treatment of the first connection between the inner wall 20 and the winding part 30, the stability of the connection between the inner wall 20 and the winding part 30 can be improved. At the same time, the motor using the insulating frame 100 of this utility model has higher working efficiency, which is beneficial to improving the working performance of the motor. In addition, when 115°>α>95°, it is beneficial to improve the slot fill factor of the winding area 40, and avoid the stator winding 300 from slipping from the first face 311 to the third face 313 due to the included angle α being too large. This makes the stator winding 300 more neatly and evenly distributed in the winding area 40, which is beneficial to improving the working efficiency of the motor.

[0048] Combination Figure 3 In some embodiments, in the cross-section passing through the set axis P, the angle α' between the first face 311 and the set axis P satisfies: 85° > α' > 65°, where P1 is a reference line parallel to the set axis P, and the angle α' can be the angle between the first face 311 and the reference line P1. The value of α' can be 68°, 70°, 72°, 75°, 80°, 83°, etc. When 85° > α' > 65°, the strength of the first connection between the inner wall 20 and the winding portion 30 is relatively high. When the inner wall 20 is subjected to a force (see attached...), Figure 5 When F1 or F2 is applied, the force can be transmitted to the first connection between the inner wall 20 and the winding portion 30. Due to the thickening treatment at the first connection between the inner wall 20 and the winding portion 30, the stability of the connection between the inner wall 20 and the winding portion 30 can be improved. At the same time, the motor using the insulating frame 100 of this utility model has higher working efficiency, which is beneficial to improving the working performance of the motor. In addition, when 85° > α' > 65°, it is beneficial to improve the slot fill factor of the winding area 40, and avoid the stator winding 300 from slipping from the first face 311 to the third face 313 due to the included angle α' being too small. This makes the stator winding 300 more neatly and evenly distributed in the winding area 40, which is beneficial to improving the working efficiency of the motor.

[0049] Combination Figure 3 and Figure 4In some embodiments, the second face 312 is inclined away from the second side 32 along a predetermined direction from the inner wall 20 to the outer wall 10, so as to ensure that the outer wall 10 and the winding portion 30 are smoothly transitioned through the second face 312, reduce stress concentration at the connection between the outer wall 10 and the winding portion 30, improve the structural strength of the outer wall 10, and at the same time help to increase the winding space of the winding area 40.

[0050] The direction setting can be referenced. Figure 3 or Figure 4 In the predetermined direction, the second facet 312 can be considered as an inclined surface connecting the outer wall 10 and the third facet 313. Compared to the outer wall 10 being directly connected to the winding portion 30 at a right angle, the connection between the outer wall 10 and the third facet 313 via the second facet 312 effectively transfers the force on the outer wall 10 to the third facet 313, reducing stress concentration at the connection between the outer wall 10 and the winding portion 30, improving the connection strength between the outer wall 10 and the winding portion 30, preventing breakage and damage to the outer wall 10, and extending the service life of the insulating frame 100. Furthermore, compared to the stepped connection between the outer wall 10 and the winding portion 30, the connection between the outer wall 10 and the third facet 313 via the inclined surface of the second facet 312 reduces the space occupied by the second facet 312 within the winding area 40, thus allowing the winding area 40 to have a larger winding space.

[0051] Combination Figure 3 In some embodiments, the angle β between the second face 312 and the side of the outer wall 10 facing the inner wall 20 satisfies: 115° > β > 95°, where the value of β can be 98°, 100°, 105°, 107°, 110°, 112°, etc., combined with Figure 10 When 115° > β > 95°, the strength of the second connection between the outer wall 10 and the winding portion 30 is high. When the outer wall 10 is subjected to a force (e.g., an axial force along a set axis P or a radial force along a set direction), the force can be transmitted to the second connection between the outer wall 10 and the winding portion 30. Due to the thickening treatment of the second connection between the outer wall 10 and the winding portion 30, the stability of the connection between the outer wall 10 and the winding portion 30 can be improved. At the same time, the motor using the insulating frame 100 of this utility model has higher working efficiency, which is beneficial to improving the working performance of the motor. In addition, when 115° > β > 95°, it is beneficial to improve the slot fill factor of the winding area 40, and avoid the stator winding 300 from slipping from the second face 312 to the third face 313 due to an excessively large included angle β. This makes the stator winding 300 more neatly and evenly distributed in the winding area 40, which is beneficial to improving the working efficiency of the motor.

[0052] Combination Figure 3In some embodiments, in the cross section passing through the set axis P, the angle β' between the second face 312 and the set axis P satisfies: 85° > β' > 65°, where P2 is a reference line parallel to the set axis P, and the angle β' can be the angle between the second face 312 and the reference line P2. The value of β' can be 68°, 70°, 72°, 75°, 80°, 83°, etc. When 85° > β' > 65°, the strength of the second connection between the outer wall 10 and the winding portion 30 is high. When the outer wall 10 is subjected to a force (e.g., an axial force along the set axis P or a radial force along the set direction), the force can be transmitted to the second connection between the outer wall 10 and the winding portion 30. Due to the thickening treatment of the second connection between the outer wall 10 and the winding portion 30, the stability of the connection between the outer wall 10 and the winding portion 30 can be improved. At the same time, the motor using the insulating frame 100 of this utility model has high working efficiency, which is beneficial to improving the working performance of the motor. In addition, when 85° > β' > 65°, it is beneficial to improve the slot fill factor of the winding area 40 and avoid the stator winding 300 from slipping from the second face 312 to the third face 313 due to the included angle β' being too small. This makes the stator winding 300 more neatly and evenly distributed in the winding area 40, which is beneficial to improving the working efficiency of the motor.

[0053] Combination Figure 3 In some embodiments, the distance between the inner wall 20 and the outer wall 10 along a predetermined direction from the inner wall 20 to the outer wall 10 is L1, and the length of the third face 313 along the predetermined direction is L2, where 0.8 > L2 / L1 > 0.6. The predetermined direction can be referenced... Figure 3 The direction is set in the parameters, and the values ​​of L2 / L1 can be 0.63, 0.65, 0.7, 0.72, 0.74, 0.75, 0.77, etc., combined with... Figure 11 The connection strength between the winding portion 30 and the inner wall 20 and the outer wall 10 decreases as the value of L2 / L1 increases, while the motor efficiency increases as the value of L2 / L1 increases. When 0.8 > L2 / L1 > 0.6, the length of L2 relative to L1 is more suitable, ensuring that the connection area between the first face 311 and the inner wall 20 and the third face 313 is large, and the connection area between the second face 312 and the outer wall 10 and the third face 313 is also large, so that the connection strength between the winding portion 30 and the inner wall 20 and the outer wall 10 is large. At the same time, the motor using the insulating frame 100 of this utility model has high working efficiency, which is beneficial to improving the working condition of the motor.

[0054] In addition, since H3 < H1, or H3 < H2, or H3 < H1 and H3 < H2, when 0.8 > L2 / L1 > 0.6, while ensuring the connection strength between the winding section 30 and the inner wall 20 and the outer wall 10 and the motor efficiency, the third part 313 can also give way to the winding area 40, so that the winding area 40 has a larger winding space, which is beneficial to improving the slot fill factor of the winding area 40.

[0055] Combination Figure 3 and Figure 4 In some embodiments, one side edge of the first face 311 is connected to the side edge of the inner wall 20 facing the outer wall 10, which helps to increase the connection length between the first face 311 and the inner wall 20, so that when the inner wall 20 is subjected to force, the force can be transmitted to the first face 311, reducing the stress concentration between the inner wall 20 and the winding portion 30, and effectively improving the structural strength of the inner wall 20; one side edge of the second face 312 is connected to the side edge of the outer wall 10 facing the inner wall 20, which helps to increase the connection length between the second face 312 and the outer wall 10, so that when the outer wall 10 is subjected to force, the force can be transmitted to the second face 312, reducing the stress concentration between the outer wall 10 and the winding portion 30, and effectively improving the structural strength of the outer wall 10.

[0056] The inner wall 20 has one end face protruding from the first side surface 31 along the set axis P, and the other end face is flush with or protrudes from the second side surface 32; the outer wall 10 has one end face protruding from the first side surface 31 along the set axis P, and the other end face is flush with or protrudes from the second side surface 32. The direction of the set axis P can be referenced. Figure 3 or Figure 4 Along the axial direction from the second side 32 to the first side 31, a winding area 40 is formed between the inner wall 20, the winding portion 30, and the outer wall 10, which facilitates the stable winding of the stator winding 300 within the winding area 40. Along the direction from the first side 31 to the second side 32, the end face of the other end of the inner wall 20 can be flush with the second side 32, which helps to simplify the structure of the insulating frame 100 and reduce the production cost of the insulating frame 100. Alternatively, the end face of the other end of the inner wall 20 can protrude from the second side 32. When the insulating frame 100 is installed at the end of the motor stator, the other end of the inner wall 20 can play a positioning role, which facilitates the rapid positioning and installation of the insulating frame 100 and reduces the assembly difficulty of the insulating frame 100 and the motor stator.

[0057] Similarly, along the direction from the first side 31 to the second side 32, the end face of the other end of the outer wall 10 can be flush with the second side 32, which helps to simplify the structure of the insulating frame 100 and reduce the production cost of the insulating frame 100; or, the end face of the other end of the outer wall 10 can protrude from the second side 32. When the insulating frame 100 is installed at the end of the motor stator, the other end of the outer wall 10 can play a positioning role, which facilitates the quick positioning and installation of the insulating frame 100 and reduces the assembly difficulty of the insulating frame 100 and the motor stator.

[0058] Optionally, the height dimension of the inner wall 20 along the set axis P can be smaller than the height dimension of the outer wall 10 along the set axis P. When the stator winding 300 is wound in the winding area 40, the outer wall 10 can separate the stator winding 300 from the external environment along the direction of the set axis P, reducing the possibility of accidental collision and damage to the stator winding 300 during handling, assembly and operation.

[0059] Combination Figure 3 and Figure 4 In some embodiments, the minimum distance H3 between the third face 313 and the second side 32 satisfies: 1.5mm ≥ H3 ≥ 0.5mm, where the value of H3 can be 0.5mm, 0.63mm, 0.7mm, 0.85mm, 0.92mm, 1mm, 1.1mm, 1.5mm, etc., combined with... Figure 12 The stator winding 300 is usually made of copper wire. The amount of copper used in the stator winding 300 increases with the increase of H3, and the motor efficiency decreases with the increase of H3. When 1.5mm ≥ H3 ≥ 0.5mm, the amount of copper used in the stator winding 300 is small, which effectively reduces the copper loss of the stator winding 300 and reduces the production cost of the motor. At the same time, the motor using the insulating frame 100 of this utility model has higher working efficiency, which is beneficial to improving the working condition of the motor.

[0060] Combination Figure 3 and Figure 4 In some embodiments, the third face 313 is connected to the first face 311 and the second face 312 respectively along the two sides of a predetermined direction from the inner wall 20 to the outer wall 10. The third face 313 is parallel to the second side 32. The predetermined direction can be referenced from... Figure 3 or Figure 4 In the set direction, the third face 313 is connected to the first face 311 on the side near the inner wall 20, and the third face 313 is connected to the second face 312 on the other side near the outer wall 10, thereby enhancing the connection strength between the winding part 30 and the inner wall 20 and the outer wall 10.

[0061] In addition, the third face 313 is parallel to the second side 32, the distance H3 between the third face 313 and the second side 32 is smaller than the distance H1 between the first face 311 and the second side 32, and the distance H3 between the third face 313 and the second side 32 is smaller than the distance H2 between the second face 312 and the second side 32, so that the third face 313 gives way to the winding area 40, which is beneficial to increase the winding space in the winding area 40, thereby improving the slot fill factor of the winding area 40.

[0062] Optionally, the first facet 311 may include a flat surface or an arc surface. The first facet 311 can be either flat or arc surface, which helps reduce the processing difficulty of the first facet 311 and lowers the production cost of the insulating frame 100. The first facet 311 can also be a combination of flat and arc surfaces, or a combination of multiple flat surfaces or multiple arc surfaces, ensuring a smooth transition between the inner wall 20 and the winding portion 30 through the first facet 311, further reducing stress concentration at the connection between the inner wall 20 and the winding portion 30. The shape and number of the first facet 311 can be determined according to actual production needs, improving the flexibility and versatility of the processing of the first facet 311.

[0063] Optionally, the second face 312 can be a flat surface or an arc surface. The second face 312 can be either flat or arc surface, which helps reduce the processing difficulty of the second face 312 and lowers the production cost of the insulating frame 100. The second face 312 can also be a combination of flat and arc surfaces, or a combination of multiple flat surfaces or multiple arc surfaces, ensuring a smooth transition between the outer wall 10 and the winding portion 30 through the second face 312, further reducing stress concentration at the connection between the outer wall 10 and the winding portion 30. The shape and number of the second face 312 can be determined according to actual production needs, improving the flexibility and versatility of the processing of the second face 312.

[0064] In some embodiments, the second side surface 32 is parallel to the end face of the motor stator, so that the second side surface 32 can be quickly aligned with the end face of the motor stator, and the insulating frame 100 can be quickly installed onto the end face of the motor stator, reducing the assembly difficulty of the insulating frame 100 and the motor stator. At the same time, it can increase the contact area between the second side surface 32 and the end face of the motor stator, ensuring that the insulating frame 100 is stably installed at the end of the motor stator. In addition, it is beneficial to improve the uniformity of the force on the insulating frame 100, so that the stator winding 300 can be evenly distributed when wound in the winding area 40, avoiding uneven force on the winding portion 30 caused by the relative tilt of the second side surface 32 and the end face of the motor stator.

[0065] In some embodiments, the second side 32 is perpendicular to a predetermined axis P, wherein the predetermined axis P can be referenced to... Figure 1In the direction of the axis, the stator core 200 of the motor stator can also extend around the direction of the set axis P, and the insulating frame 100 can be installed at the end of the motor stator along the direction of the set axis P, which effectively simplifies the assembly steps of the insulating frame 100 and the motor stator and reduces the assembly difficulty of the insulating frame 100 and the motor stator.

[0066] The motor stator according to an embodiment of the present invention includes a stator core 200, a stator winding 300, and the aforementioned insulating frame 100. The stator core 200 provides a low magnetic reluctance path and supports the stator winding 300 and the insulating frame 100. The stator winding 300 is used to input current and generate a magnetic field within the stator core 200. The insulating frame 100 separates the ends of the stator core 200 and the stator winding 300 to achieve electrical insulation. The insulating frame 100 is disposed on the end face of the stator core 200, and the stator winding 300 passes through the winding region 40.

[0067] Specifically, the insulating frame 100 can be installed at both ends of the stator core 200 along a set axis P, which can be referenced... Figure 13 In the direction of the axis P, the stator winding 300 can be wound in the winding area 40. The insulating frame 100 establishes electrical insulation between the stator core 200 and the stator winding 300, preventing the stator winding 300 from breaking down into the stator core 200, thus achieving electrical insulation between the stator winding 300 and the stator core 200. During motor operation, especially when the motor starts and stops, electromagnetic force will cause the stator winding 300 to vibrate. The outer wall 10, inner wall 20, and winding section 30 can confine the stator winding 300 within the winding area 40, preventing the stator winding 300 from loosening, wearing, or popping out due to vibration. The outer wall 10, inner wall 20, and winding section 30 provide support for the stator winding 300, ensuring the stability of the shape and position of the stator winding 300.

[0068] like Figure 5 As shown, when the insulating frame 100 is installed at the end of the motor stator, it is usually necessary to apply a force along a set axis P (reference) to the insulating frame 100. Figure 5 The axial force F1 (in the direction of the axis in the winding); or, during the high-speed automatic winding process, the stator winding 300 will be tightened with a large tension and embedded in the winding area 40, and the inner wall 20 must have sufficient mechanical strength and structural rigidity to withstand the radial force F2.

[0069] In conjunction with the foregoing, during installation or automatic winding, the aforementioned axial or radial forces are typically applied to the inner wall 20. The inner wall 20 is connected to the winding portion 30 via the first facet 311. When the inner wall 20 is subjected to axial or radial forces, these forces can be distributed to the first facet 311, reducing stress concentration at the connection between the inner wall 20 and the winding portion 30 and improving the connection strength between them. Simultaneously, this reduces the probability of cracking or deformation of the inner wall 20, which is beneficial for extending the service life of the insulating frame 100.

[0070] Of course, the aforementioned axial or radial force may also be applied to the outer wall 10. The outer wall 10 and the third surface 313 are connected by the second surface 312. When the outer wall 10 is subjected to axial or radial force, the axial or radial force can be dispersed to the second surface 312, reducing the stress concentration at the connection between the outer wall 10 and the winding portion 30 and improving the connection strength between the outer wall 10 and the winding portion 30. At the same time, it can reduce the possibility of cracking and deformation of the outer wall 10, which is beneficial to extending the service life of the insulating frame 100.

[0071] According to the embodiment of the present invention, the motor stator is connected to the inner wall 20 by the first part 311 of the insulating frame 100 and to the outer wall 10 by the second part 312, which reduces the stress concentration when the insulating frame 100 is under force, effectively increases the structural strength of the inner wall 20 and the outer wall 10, thereby improving the mechanical strength of the insulating frame 100, which is beneficial to improving the reliability and stability of the motor stator operation.

[0072] Optionally, the insulating frame 100 is provided with a first positioning structure and a second positioning structure. The first positioning structure can be provided on the second side 32 of the insulating frame 100, and the second positioning structure is provided on the opposite sides of two adjacent winding portions 30 and on the outer wall 10 connecting the two adjacent winding portions 30. The stator core 200 is provided with a positioning hole and a positioning step. When the insulating frame 100 is installed at the end of the stator core 200, at least a part of the first positioning structure is embedded in the positioning hole, and the second positioning structure abuts against the positioning step, thereby improving the stability and reliability of the insulating frame 100 installed at the end of the stator core 200.

[0073] The specific structure of the insulating frame 100 is as described in the above embodiments. Since the stator of this motor adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0074] The motor according to the present utility model includes the aforementioned motor stator. The specific structure of the motor stator is as described in the above embodiments. Since the motor adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0075] The compressor according to the present utility model includes the aforementioned motor. The specific structure of the motor is as described in the above embodiments. Since the compressor adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0076] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0077] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0078] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0079] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0080] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0081] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An insulating frame (100) for mounting to the end of a motor stator, characterized in that, The insulating frame (100) includes an outer wall (10), an inner wall (20), and a winding portion (30). The outer wall (10) extends around a predetermined axis, and the inner wall (20) is closer to the predetermined axis than the outer wall (10). The winding portion (30) connects the inner wall (20) and the outer wall (10). A winding area (40) is provided between the inner wall (20) and the outer wall (10). The winding portion (30) includes a first side (31) facing the winding area (40) and a second side (32) facing away from the winding area (40). The first side surface (31) includes a first face surface (311), a second face surface (312), and a third face surface (313). The first face surface (311) is connected to the inner wall (20), the second face surface (312) is connected to the outer wall (10), and the third face surface (313) is connected between the first face surface (311) and the second face surface (312). The distance H1 between the first face surface (311) and the second side surface (32) along the set axis, the distance H2 between the second face surface (312) and the second side surface (32) along the set axis, and the distance H3 between the third face surface (313) and the second side surface (32) along the set axis satisfy: H1 > H2; and / or, H1 > H3.

2. The insulating frame (100) according to claim 1, characterized in that, The first face (311) is inclined toward the second side (32) along a predetermined direction from the inner wall (20) to the outer wall (10).

3. The insulating frame (100) according to claim 2, characterized in that, The angle α between the first face (311) and the side of the inner wall (20) facing the outer wall (10) satisfies: 115°>α>95°; or, in the cross section passing through the set axis, the angle α' between the first face (311) and the set axis satisfies: 85°>α'>65°.

4. The insulating frame (100) according to claim 1, characterized in that, The second face (312) is inclined away from the second side (32) along a predetermined direction from the inner wall (20) to the outer wall (10).

5. The insulating frame (100) according to claim 4, characterized in that, The angle β between the second face (312) and the side of the outer wall (10) facing the inner wall (20) satisfies: 115° > β > 95°; or, in the cross section passing through the set axis, the angle β' between the second face (312) and the set axis satisfies: 85° > β' > 65°.

6. The insulating frame (100) according to claim 1, characterized in that, The distance between the inner wall (20) and the outer wall (10) along a predetermined direction from the inner wall (20) to the outer wall (10) is L1, and the length of the third face (313) along the predetermined direction is L2, wherein 0.8 > L2 / L1 > 0.

6.

7. The insulating frame (100) according to claim 1, characterized in that, One side edge of the first face (311) is connected to the side edge of the inner wall (20) facing the outer wall (10), and one side edge of the second face (312) is connected to the side edge of the outer wall (10) facing the inner wall (20). The inner wall (20) protrudes from the first side surface (31) at one end along the set axis, and the other end is flush with or protrudes from the second side surface (32); the outer wall (10) protrudes from the first side surface (31) at one end along the set axis, and the other end is flush with or protrudes from the second side surface (32).

8. The insulating frame (100) according to claim 1, characterized in that, The minimum distance H3 between the third face (313) and the second side (32) satisfies: 1.5mm ≥ H3 ≥ 0.5mm.

9. The insulating frame (100) according to claim 1, characterized in that, The third face (313) is connected to the first face (311) and the second face (312) respectively along the two sides of the set direction from the inner wall (20) to the outer wall (10), and the third face (313) is parallel to the second side (32). The first face (311) includes a planar or curved surface; the second face (312) includes a planar or curved surface.

10. The insulating frame (100) according to claim 1, characterized in that, The second side (32) is parallel to the end face of the motor stator; or, the second side (32) is perpendicular to the set axis.

11. A motor stator, characterized in that, It includes a stator core (200), a stator winding (300), and an insulating frame (100) as described in any one of claims 1-10, wherein the insulating frame (100) is disposed on the end face of the stator core (200), and the stator winding (300) passes through the winding area (40).

12. An electric motor, characterized in that, Includes the motor stator as described in claim 11.

13. A compressor, characterized in that, Includes the motor as described in claim 12.

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