Insulation framework, stator, motor and pump
By setting an inclined surface in the winding section of the insulating frame to change the winding trajectory, the problem of existing insulating frames affecting winding length is solved, thereby reducing resistance and cost and improving motor efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-03-24
AI Technical Summary
The existing insulation frame design affects the motor winding length, leading to increased resistance and copper losses, which in turn affects motor efficiency.
An insulating frame is designed with a first inclined surface and a second inclined surface on the top wall of the winding section to change the winding trajectory, reduce the winding length, and reduce the amount of material used in the insulating frame.
This reduces the winding resistance, decreases copper losses, improves motor efficiency, and lowers the cost of the insulation frame.
Smart Images
Figure CN224037169U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to pump technical field especially relates to an insulation framework, stator, motor and pump. BACKGROUND
[0002] As shown in Figure 1 and Figure 2 , in the prior art, the insulation framework includes an outer retaining ring 10, a plurality of winding portions 20, and a plurality of inner retaining plates 30. The plurality of winding portions 20 are evenly connected to the inner side of the outer retaining ring 10 along the circumferential direction of the outer retaining ring 10. The inner retaining plate 30 is connected to the winding portion 20 one by one. The inner retaining plate 30 is connected to one end of the winding portion 20 away from the outer retaining ring 10. The winding is located between the outer retaining ring 10 and the inner retaining plate 30 and is wound around the winding portion 20.
[0003] In the prior art, the main purpose of the insulation framework design is to play an insulating role. However, the influence of the insulation framework on the winding is not considered. The design of the insulation framework affects the length of the motor winding, thereby affecting the resistance value. The copper loss of the winding is one of the main heat sources of the motor. Therefore, the length of the winding ultimately affects the overall efficiency of the motor. SUMMARY
[0004] The first purpose of the utility model is to provide an insulation framework to at least solve one of the above technical problems.
[0005] To achieve the above purpose, the utility model provides an insulation framework in the first aspect, which comprises an outer retaining ring, a plurality of winding portions, and a plurality of inner retaining plates. The plurality of winding portions are evenly connected to the inner side of the outer retaining ring along the circumferential direction of the outer retaining ring. The inner retaining plate is connected to the winding portion one by one. The inner retaining plate is connected to one end of the winding portion away from the outer retaining ring. The winding portion comprises a first side wall, a top wall, and a second side wall connected in sequence. The first side wall and the second side wall are arranged along the circumferential direction of the outer retaining ring. The top wall is connected to one end of the first side wall and the second side wall along the axial direction of the outer retaining ring. The outer surface of the top wall in contact with the winding comprises a first inclined surface and a second inclined surface. The first inclined surface gradually inclines downward from the side where the second side wall is located to the side where the first side wall is located. The second inclined surface gradually inclines downward from the side where the first side wall is located to the side where the second side wall is located. The connection between the first inclined surface and the second inclined surface is the maximum thickness of the top wall.
[0006] Optionally, the first inclined surface and the second inclined surface are symmetrical about the axial direction of the outer retaining ring.
[0007] Optionally, an angle between the first inclined surface or the second inclined surface and a cross section of the outer check ring is α, α=arctan[(c-d) / (b / 2)], wherein b is a length of the top wall at a maximum length along a circumferential direction of the outer check ring, c is a thickness of the top wall at a maximum thickness along an axial direction of the outer check ring, d is a thickness of the top wall at a minimum thickness along the axial direction of the outer check ring, and c>d>0.
[0008] Optionally, d≥f, f is a thickness of the first side wall or the second side wall along the circumferential direction of the outer check ring.
[0009] Optionally, a thickness of the first side wall along the circumferential direction of the outer check ring is equal to a thickness of the second side wall along the circumferential direction of the outer check ring.
[0010] Optionally, an angle between the first inclined surface and the second inclined surface is an obtuse angle; and / or
[0011] an angle between the first inclined surface and the first side wall is an obtuse angle; and / or
[0012] an angle between the second inclined surface and the second side wall is an obtuse angle.
[0013] A second object of the present application is to provide a stator.
[0014] To achieve the above object, the present application provides a stator in a second aspect.
[0015] The stator comprises the insulation framework and a stator, and the stator is at least partially inserted between the first side wall and the second side wall of the insulation framework.
[0016] A third object of the present application is to provide a motor.
[0017] To achieve the above object, the present application provides a motor in a third aspect.
[0018] The motor comprises the stator.
[0019] A fourth object of the present application is to provide a pump.
[0020] To achieve the above object, the present application provides a pump in a fourth aspect.
[0021] The pump comprises the motor.
[0022] It can be seen from the above that the winding part in the technical scheme provided by the utility model has the first inclined surface and the second inclined surface cut off above, that is, the part of the first inclined surface and the second inclined surface away from the first side wall and the second side wall is cut off, on the one hand, the outer surface of the top wall is the first inclined surface and the second inclined surface, the winding track of the winding is changed, the winding length is reduced, the cost of the winding is reduced, the motor resistance is reduced, and the motor efficiency is improved; on the other hand, the winding part reduces the material of the insulation framework, and the cost of the insulation framework is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 is a structural schematic view of the insulation framework in the prior art;
[0024] Figure 2 is a sectional view of the winding part in the utility model; Figure 1
[0025] Figure 3 is a structural schematic view of the insulation framework provided by the utility model embodiment;
[0026] Figure 4 is a sectional view of the winding part provided by the utility model embodiment;
[0027] Figure 5 is a structural schematic view of the insulation framework with the winding wound thereon provided by the utility model embodiment.
[0028] In the drawings:
[0029] 10, outer blocking ring; 20, winding part; 30, inner blocking plate;
[0030] 1, outer blocking ring;
[0031] 2, winding part; 21, first side wall; 22, top wall; 221, first inclined surface; 222, second inclined surface; 23, second side wall;
[0032] 3, inner blocking plate;
[0033] 50, winding. DETAILED DESCRIPTION
[0034] The technical scheme of the utility model will be further described below in combination with the drawings and through specific embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the parts related to the utility model are shown in the drawings, not all.
[0035] The utility model limits some orientation words, under the condition of not making opposite statement, the orientation words such as "up", "down", "left", "right", "inner", "outer" are used for being convenient for understanding, thus do not constitute the limitation of the protection scope of the utility model.
[0036] In the utility model, unless another definite provision and limitation, the "on" or "under" of the first feature to the second feature can include that the first and second features are directly contacted, also can include that the first and second features are not directly contacted but are contacted through another feature between them.
[0037] In the description of the utility model, unless another definite provision and limitation, the term "connect", "connect", "fix" should be understood broadly, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be the communication or the interaction of two elements inside two elements.
[0038] The embodiment provides an insulation framework, which is used in a motor and serves as an isolation component between a stator core and a winding 50, so as to change the winding path of the winding 50 on the insulation framework, reduce the length of the winding 50, reduce the cost, reduce the energy consumption of the winding 50, and improve the efficiency.
[0039] As shown in Figure 2 The outer contour of the longitudinal section (the longitudinal section is a section parallel to the axial direction of the insulation framework) of the existing winding part is rectangular, and the winding 50 is wound along the shape of the outer contour during winding, so that the use amount of the winding 50 is large.
[0040] As shown in Figure 3 and Figure 4As shown, the insulation framework provided by the embodiment includes an outer retaining ring 1, a plurality of winding portions 2, and a plurality of inner retaining plates 3. The outer retaining ring 1 is circular, for example. The plurality of winding portions 2 are evenly spaced along the circumference of the outer retaining ring 1 and are connected to the inner side of the outer retaining ring 1 (only one winding portion 2 and one inner retaining plate 3 are shown in the figure, and part of the outer retaining ring 1 is shown). The inner retaining plate 3 is connected to the winding portion 2 in a one-to-one correspondence, and the inner retaining plate 3 is connected to one end of the winding portion 2 away from the outer retaining ring 1, that is, the inner retaining plate 3 is connected to one end of the winding portion 2 close to the center of the outer retaining ring 1. After the winding 50 is wound on the winding portion 2, the outer retaining ring 1 and the inner retaining plate 3 can stop the winding 50 from coming out.
[0041] The winding portion 2 includes a first side wall 21, a top wall 22, and a second side wall 23 connected in sequence. The first side wall 21 and the second side wall 23 are spaced along the circumference of the outer retaining ring 1, and the top wall 22 is connected to one end of the first side wall 21 and the second side wall 23 along the axial direction of the outer retaining ring 1. Figure 4 In the direction shown, the top wall 22 is connected to the upper end of the first side wall 21 and the second side wall 23, that is, the first side wall 21, the top wall 22, and the second side wall 23 are connected in a substantially "n" shape.
[0042] The surface of the top wall 22 in contact with the winding 50 is an outer surface, and the outer surface of the top wall 22 includes a first inclined surface 221 and a second inclined surface 222. The first inclined surface 221 gradually inclines downward from the side where the second side wall 23 is located to the side where the first side wall 21 is located, and the second inclined surface 222 gradually inclines downward from the side where the first side wall 21 is located to the side where the second side wall 23 is located. The connection between the first inclined surface 221 and the second inclined surface 222 is the maximum thickness of the top wall 22. As shown, Figure 4 The outer surface of the top wall 22 is similar to an inverted "V" shape. It can be understood that the thickness of the top wall 22 refers to the dimension of the top wall 22 along the axial direction of the outer retaining ring 1.
[0043] The winding portion 2 in the embodiment cuts off the part above the first inclined surface 221 and the second inclined surface 222, that is, cuts off the part of the first inclined surface 221 and the second inclined surface 222 away from the first side wall 21 and the second side wall 23, compared with the winding portion in the prior art. On the one hand, the outer surface of the top wall 22 of the winding portion 2 is the first inclined surface 221 and the second inclined surface 222, which changes the winding trajectory of the winding 50, reduces the winding length, reduces the cost of the winding 50, reduces the motor resistance, and improves the motor efficiency. On the other hand, the winding portion 2 reduces the material of the insulation framework and reduces the cost of the insulation framework.
[0044] The first inclined surface 221 and the second inclined surface 222 are symmetrical about the axial direction of the outer retaining ring 1, so that the winding is regular.
[0045] As shown, Figure 4As shown, the included angle between the first inclined surface 221 or the second inclined surface 222 and the cross section of the outer check ring 1 is α, α = arctan[(c-d) / (b / 2)], and c > d > 0, wherein b is the length of the top wall 22 at the maximum length along the circumferential direction of the outer check ring 1, c is the thickness of the top wall 22 at the maximum thickness along the axial direction of the outer check ring 1, that is, c is the thickness of the top wall 22 when the top wall 22 of the winding portion 2 in the prior art is a plane, or c is the thickness corresponding to the intersection of the first inclined surface 221 and the second inclined surface 222 along the axial direction of the outer check ring 1. d is the thickness of the top wall 22 at the minimum thickness along the axial direction of the outer check ring 1, that is, d is the thickness of the top wall 22 at the end along the circumferential direction of the outer check ring 1. It can be understood that due to the existence of the first inclined surface 221 and the second inclined surface 222, the dimensions of the top wall 22 at different positions along the circumferential direction and the axial direction of the outer check ring 1 are inconsistent, and therefore, the maximum thickness and the minimum thickness are used for limitation here.
[0046] When d is the smallest, the angle α is the largest, and the optimization effect is the best and the material is saved the most.
[0047] Preferably, d ≥ f, and f is the thickness of the first side wall 21 or the second side wall 23 along the circumferential direction of the outer check ring 1. d ≥ f can ensure the thickness of the top wall 22 and the strength of the insulation skeleton while shortening the winding 50 as much as possible, so as to avoid deformation of the winding portion 2.
[0048] Further, d = f, that is, the optimal angle α is α = arctan[(c-f) / (b / 2)].
[0049] Optionally, the thickness of the first side wall 21 along the circumferential direction of the outer check ring 1 is equal to the thickness of the second side wall 23 along the circumferential direction of the outer check ring 1, so as to improve the uniformity of stress of the winding portion 2.
[0050] According to the calculation, it can be known that in the prior art, the length L1 of the innermost winding 50 on the insulation skeleton is L1 = (2e+2c+b)+1.5*Φ, and Φ is the wire diameter of the winding 50.
[0051] In the prior art, the length L2 of the second winding 50 wound on the insulation skeleton is L2 = (2e+2c+b)+3*[1 / 2+(N-1)cos30°]*Φ, and N is the number of layers.
[0052] In the prior art, the length L3 of the third winding 50 wound on the insulation skeleton is L3 = (2e+2c+b)+3*[1 / 2+(N-1)cos30°]*Φ, and N is the number of layers, and so on.
[0053] In this embodiment, the winding path of the first layer of winding 50 wound on the insulating frame is L1' = [2e+2d+sqrt((b / 2)^2+(cd)^2)]+1.5*Φ, the length of the second layer of winding 50 wound on the insulating frame is L2' = [2e+2d+sqrt((b / 2)^2+(cd)^2)]+3*[1 / 2+(N-1)cos30°]*Φ, and the length of the third layer of winding 50 wound on the insulating frame is L3' = [2e+2d+sqrt((b / 2)^2+(cd)^2)]+3*[1 / 2+(N-1)cos30°]*Φ, where Φ is the wire diameter of winding 50, N is the number of layers, and so on.
[0054] Compared with the insulating skeleton in the prior art, the insulation skeleton provided in this embodiment has the following shortening length ΔL1 for each turn of the first layer of winding 50: ΔL1 = 2d + sqrt[(b / 2)^2 + (cd)^2] - (2c + b). The shortening length ΔL2 for each turn of the second and third layers of winding 50 is ΔL2 = 2d + sqrt[(b / 2)^2 + (cd)^2] - (2c + b), and so on. The total shortening length of the winding 50 of the insulating skeleton is related to the number of winding layers A, the number of turns N in each winding layer, and the number of winding sections 2 Z (i.e., the number of stator slots). The total shortening length of the winding 50 is ΔL, ΔL = 2*Z*(A1*N1 + A2*N2 + A3*N3 + ...)*{2d + sqrt[(b / 2)^2 + (cd)^2] - (2c + b)}.
[0055] Since the resistance of winding 50 is directly proportional to its length, shortening the total length of winding 50 not only reduces the resistance of winding 50, reduces the copper loss of the motor, improves the efficiency of the motor, and improves the heating of the motor, but also reduces the cost of copper wire (i.e., winding 50).
[0056] like Figure 4 and Figure 5 As shown, the included angle β1 between the first inclined surface 221 and the second inclined surface 222 is an obtuse angle, the included angle β2 between the first inclined surface 221 and the first sidewall 21 is an obtuse angle, and the included angle β3 between the second inclined surface 222 and the second sidewall 23 is an obtuse angle.
[0057] In the prior art, the sidewall and top wall form a 90° angle. When the winding 50 is wound from the side to the top wall, it cannot completely adhere to the surface of the top wall, resulting in a bulge. In this embodiment, the angle between the connected outer surfaces of the winding portion 2 is an obtuse angle, which can alleviate the tendency of the winding 50 to bulge, and even prevent bulging of the winding 50 at the surface of the top wall 22. It is understood that the outer surface here refers to the surface where the winding 50 contacts the winding portion 2.
[0058] In addition, in the prior art, when the winding 50 is wound by the side wall to the top wall, the bending angle of the winding 50 is 90°, which is easy to cause the paint skin of the winding 50 to be broken, in the utility model, the included angle between the outer surfaces of each phase of the winding part 2 is obtuse, which avoids the problem of the paint skin of the winding 50 being broken due to bending when the winding 50 is wound.
[0059] The embodiment further provides a stator, which comprises the insulation framework and the stator, and the stator is at least partially inserted between the first side wall 21 and the second side wall 23 of the insulation framework.
[0060] The embodiment further provides an electric machine, which comprises the stator, and the electric machine has reduced energy consumption and high efficiency.
[0061] The embodiment further provides a pump, which comprises the electric machine, and the pump has reduced energy consumption and high efficiency.
[0062] Although the utility model has been described in detail above with general description, specific implementation and test, on the basis of the utility model, some modifications or improvements can be made, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model all belong to the scope of protection required by the utility model.
Claims
1. An insulating frame, comprising an outer retaining ring (1), a plurality of winding portions (2), and a plurality of inner baffles (3), wherein the plurality of winding portions (2) are evenly connected to the inner side of the outer retaining ring (1) at circumferential intervals, and the inner baffles (3) are connected to the winding portions (2) one-to-one, and the inner baffles (3) are connected to the end of the winding portion (2) away from the outer retaining ring (1), characterized in that, The winding portion (2) includes a first sidewall (21), a top wall (22), and a second sidewall (23) connected in sequence. The first sidewall (21) and the second sidewall (23) are spaced apart along the circumference of the outer retaining ring (1). The top wall (22) is connected to one end of the first sidewall (21) and the second sidewall (23) along the axial direction of the outer retaining ring (1). The outer surface of the top wall (22) that contacts the winding (50) includes a first inclined surface (221) and a second inclined surface (222). The first inclined surface (221) gradually slopes downward from the side where the second sidewall (23) is located to the side where the first sidewall (21) is located. The second inclined surface (222) gradually slopes downward from the side where the first sidewall (21) is located to the side where the second sidewall (23) is located. The connection point of the first inclined surface (221) and the second inclined surface (222) is the maximum thickness of the top wall (22).
2. The insulating frame according to claim 1, characterized in that, The first inclined surface (221) and the second inclined surface (222) are axially symmetrical about the outer retaining ring (1).
3. The insulating frame according to claim 1 or 2, characterized in that, The angle between the first inclined surface (221) or the second inclined surface (222) and the cross section of the outer retaining ring (1) is α, where α = arctan[(cd) / (b / 2)], b is the length of the top wall (22) at the maximum length along the circumference of the outer retaining ring (1), c is the thickness of the top wall (22) at the maximum thickness along the axial direction of the outer retaining ring (1), d is the thickness of the top wall (22) at the minimum thickness along the axial direction of the outer retaining ring (1), and c > d > 0.
4. The insulating frame according to claim 3, characterized in that, d≥f, where f is the thickness of the first sidewall (21) or the second sidewall (23) along the circumference of the outer retaining ring (1).
5. The insulating frame according to claim 4, characterized in that, The thickness of the first sidewall (21) along the circumference of the outer retaining ring (1) is equal to the thickness of the second sidewall (23) along the circumference of the outer retaining ring (1).
6. The insulating frame according to claim 1 or 2, characterized in that, The angle between the first inclined surface (221) and the second inclined surface (222) is an obtuse angle; and / or The angle between the first inclined surface (221) and the first sidewall (21) is an obtuse angle; and / or The angle between the second inclined surface (222) and the second sidewall (23) is an obtuse angle.
7. A stator, characterized in that, The device includes an insulating frame and a stator as described in any one of claims 1-6, wherein the stator is at least partially inserted between the first sidewall (21) and the second sidewall (23) of the insulating frame.
8. An electric motor, characterized in that, Includes the stator as described in claim 7.
9. A pump, characterized in that, Includes the motor as described in claim 8.