Insulation framework structure, motor and compressor

Abstract

The invention provides an insulation skeleton structure, a motor and a compressor, the insulation skeleton structure comprises a first insulation skeleton, the first insulation skeleton is provided with at least one outgoing line notch, the first insulation skeleton is also provided with a plurality of winding incoming line notches, the incoming line notches comprise a first phase incoming line notch and a third phase incoming line notch, and the first phase incoming line notch and the third phase incoming line notch are connected with the first phase incoming line notch. The first phase wire inlet notch and the third phase wire inlet notch are arranged at an interval in the circumferential direction of the first insulation framework, and the outgoing wire notch is arranged at a position between the first phase wire inlet notch and the third phase wire inlet notch. According to the invention, cross short circuit between the outgoing line and the incoming line of the motor can be avoided, the insulation performance of the motor is greatly improved, and the safety performance of the motor is improved; the problem of cross short circuit caused by the fact that the arrangement of the outgoing line notches of the motor in the prior art affects the overall overline of the winding is effectively solved.

Description

Technical Field

[0001] This invention relates to the field of motor technology, specifically to an insulating frame structure, a motor, and a compressor. Background Technology

[0002] In the existing technology, the overall size of the vehicle-mounted compressor is relatively small, and the requirements for the size of the parts are high. Usually, lead wire slots are set on the insulation frame of the motor. However, improper setting of the lead wire slots of the motor can affect the overall cross-wire of the winding, leading to cross short circuits and other situations, which affect the safety performance of the motor.

[0003] Because the existing motors have lead slots that affect the overall cross-wire configuration of the windings, leading to technical problems such as cross-short circuits, this invention designs an insulating frame structure, a motor, and a compressor. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the setting of lead wire slots in the existing motor will affect the overall cross-wire of the winding, resulting in cross short circuits, thereby providing an insulating frame structure, a motor and a compressor.

[0005] To address the above problems, the present invention provides an insulating frame structure comprising:

[0006] A first insulating frame has at least one lead-out slot and multiple winding inlet slots. The inlet slots include a first-phase inlet slot and a third-phase inlet slot. The first-phase inlet slot and the third-phase inlet slot are spaced apart in the circumferential direction of the first insulating frame, and the lead-out slot is located between the first-phase inlet slot and the third-phase inlet slot.

[0007] In some implementations...

[0008] The lead wire slot includes a first lead wire slot, a second lead wire slot, and a third lead wire slot. The first insulating frame is a ring structure. Along the circumferential direction of the first insulating frame, the first lead wire slot, the second lead wire slot, and the third lead wire slot are arranged sequentially, and the first lead wire slot, the second lead wire slot, and the third lead wire slot are all located between the first phase inlet slot and the third phase inlet slot.

[0009] In some implementations...

[0010] Along the circumferential direction of the first insulating frame, the second lead slot is located between the first lead slot and the third lead slot, and the width of the second lead slot along the circumferential direction is w1, the width of the first lead slot and the width of the third lead slot are both w2, and w1 > 2.6 mm. Where I is the magnitude of the phase current of the motor under rated operation;

[0011] The width of each of the multiple inlet slots along the circumferential direction is also w1.

[0012] In some implementations...

[0013] Among the multiple winding inlet slots, along the axial direction of the first insulating skeleton, the inlet slot with the largest axial depth has an axial depth of h1, the inlet slot with the smallest axial depth has an axial depth of h2, and the lead-out slot has an axial depth of h, with h2 < h < h1.

[0014] In some implementations...

[0015] It also includes a second insulating frame, with the first insulating frame located above the second insulating frame. The first insulating frame is assembled at the upper end of the stator core, and the second insulating frame is assembled at the lower end of the stator core. The lead wire slot is opened from the upper end of the first insulating frame downward to form a vertical blind slot structure. The first phase inlet slot and the third phase inlet slot are also opened from the upper end of the first insulating frame downward to form a vertical blind slot structure.

[0016] In some implementations...

[0017] It also includes a first cover plate and a second cover plate. The first cover plate is disposed on the axial upper end surface of the first insulating frame and covers the upper end of at least a portion of the structure of the first insulating frame. The second cover plate is disposed on the axial lower end surface of the second insulating frame and covers the lower end of at least a portion of the structure of the second insulating frame.

[0018] In some implementations...

[0019] The first insulating frame has mating holes located on its circumferential side. The first insulating frame is assembled with the first cover plate through these mating holes. The first insulating frame also includes a frame base plate. The minimum distance between the bottom of the mating hole and the frame base plate is h3. Where z is the number of turns of the winding, Φ is the wire diameter of the winding, c is the length of the tooth of the first insulating frame along the radial direction of the insulating frame, and there is a distance h4 between the top of the mating hole and the top of the first insulating frame, satisfying the relationship h4>2mm.

[0020] In some implementations...

[0021] The first cover plate is an arc-shaped plate structure with arcs on both the inner and outer circumferences. The span a2 of the arc-shaped plate structure in the circumferential direction satisfies the relationship 120°<a2<160°. The first insulating frame is provided with a mating hole located on the circumferential side of the first insulating frame. The first cover plate is provided with a buckle that engages and fixes with the mating hole of the first insulating frame. The circumferential span a1 of the buckle satisfies the relationship 10°<a1<20°.

[0022] In some implementations...

[0023] The first cover plate is an arc-shaped plate structure with arcs on both the inner and outer circumferences, and the second cover plate is an annular structure. The inner diameter of the first cover plate and the second cover plate is d1, the outer diameter of the first cover plate and the maximum outer diameter of the second cover plate are both d2, the inner diameter of the first insulating frame and the second insulating frame are both d3, and the outer diameter of the first insulating frame and the second insulating frame are both d4, and the relationship d3 < d1 < d2 < d4 is satisfied.

[0024] In some implementations...

[0025] The second cover plate is also provided with an upwardly extending elongated structure that extends into the stator slot of the stator core. The axial height of the elongated structure along the axial direction of the second insulating frame is h5, and the axial height of the stator core is h6. h5 and h6 satisfy the following relationship:

[0026] The present invention also provides an electric motor, which includes the aforementioned insulating frame structure, a stator core, and windings, wherein the insulating frame structure is fitted with the stator core, and then the windings are wound.

[0027] The present invention also provides a compressor that includes the aforementioned motor.

[0028] The insulating frame structure, motor, and compressor provided by this invention have the following beneficial effects:

[0029] 1. This invention provides lead-out slots on a first insulating frame and also provides multiple inlet slots on the first insulating frame. The lead-out slots are positioned between the first-phase inlet slot and the second-phase inlet slot. These lead-out slots are used to fix the motor leads and do not affect the overall wiring of the windings. Therefore, cross-short circuits between the motor leads and inlet wires are prevented, greatly improving the insulation performance and safety of the motor. This effectively solves the problem in the prior art where the presence of lead-out slots in the motor affects the overall wiring of the windings, leading to cross-short circuits.

[0030] 2. The present invention further incorporates a second insulating frame, which forms a lower insulating frame below and a first insulating frame above, forming an upper insulating frame. The motor lead wire slot and inlet are both located on the upper insulating frame, ensuring that both the motor crossover and lead-out occur on the upper insulating frame, while wiring takes place on the lower insulating frame. This allows the motor lead wire assembly to be led out from the upper half of the compressor, preventing wear between the lead wire and the lower housing, improving the overall insulation performance, and reducing the interaction force between the lead wire assembly and the compressor core. This prevents the lead wire from pulling on the compressor core structure, thus reducing vibration noise during operation and improving the stability and reliability of the compressor. The invention can improve motor insulation and vibration reduction performance without increasing the overall size of the compressor, or effectively reduce the overall size while maintaining insulation and vibration reduction performance. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of the stator assembly of the present invention (including the insulating frame, stator core and windings);

[0032] Figure 2 yes Figure 1 Longitudinal sectional view and top view of the stator assembly;

[0033] Figure 3 yes Figure 1 First front view and second front view of the upper insulating frame (showing different dimensions);

[0034] Figure 4 yes Figure 1 Top view and perspective view of the upper insulating frame and upper cover plate;

[0035] Figure 5 yes Figure 1 A perspective view and a front view of the lower cover plate;

[0036] Figure 6 yes Figure 1 A three-dimensional view and a front longitudinal section view of the stator core;

[0037] Figure 7This is a bar chart comparing the overall modal frequencies of the present invention with those of existing technologies.

[0038] Figure 8 This is a bar chart comparing the motor volume of the present invention with that of the prior art.

[0039] The reference numerals in the attached figures are as follows:

[0040] 1. First insulating frame; 2. Lead wire slot; 3. First phase inlet slot; 4. Third phase inlet slot; 5. Second insulating frame; 6. Stator core; 7. First lead wire slot; 8. Second lead wire slot; 9. Third lead wire slot; 10. Mating hole; 11. First cover plate; 12. Second cover plate; 13. Frame base plate; 14. Buckle; 15. Long strip structure; 16. Motor housing; 17. Motor lead wire; 18. Winding; 19. Stator slot; 20. Frame teeth; 21. Stator teeth; 22. Stator slot. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0044] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not 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 on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0045] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0046] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0047] like Figure 1-8As shown, the present invention provides an insulating frame structure, which includes:

[0048] A first insulating frame 1 has at least one lead-out slot 2 and multiple winding inlet slots. The inlet slots include a first phase inlet slot 3 and a third phase inlet slot 4. The first phase inlet slot 3 and the third phase inlet slot 4 are spaced apart in the circumferential direction of the first insulating frame 1, and the lead-out slot 2 is located between the first phase inlet slot 3 and the third phase inlet slot 4.

[0049] This invention utilizes lead-out slots on a first insulating frame, along with multiple inlet slots on the same frame. The lead-out slots are positioned between the first-phase and second-phase inlet slots. These slots secure the motor leads without affecting the overall winding cross-connection, thus preventing cross-short circuits between the motor leads and inlet wires. This significantly improves the motor's insulation and safety performance. It effectively solves the problem in existing technologies where lead-out slots affect the overall winding cross-connection, leading to cross-short circuits. As shown in the table below, the short-circuit rate of this invention is 0, greatly improving the motor's short-circuit protection compared to existing technologies.

[0050] Table 1 Comparison of Electrical Safety

[0051] Number of prototypes Number of short circuits Short circuit rate Existing technology 55 4 7.27％ This invention 55 0 0

[0052] In some implementations...

[0053] The lead-out slot 2 includes a first lead-out slot 7, a second lead-out slot 8, and a third lead-out slot 9. The first insulating frame 1 is a ring structure. Along the circumferential direction of the first insulating frame 1, the first lead-out slot 7, the second lead-out slot 8, and the third lead-out slot 9 are arranged sequentially, and the first lead-out slot 7, the second lead-out slot 8, and the third lead-out slot 9 are all located between the first phase inlet slot 3 and the third phase inlet slot 4.

[0054] This is a further preferred structural form of the lead wire slot of the present invention, namely, a slot including three-phase lead wires from the first to the third, and all three lead wire slots are located between the first phase inlet slot and the third phase inlet slot, thereby further preventing cross-short circuits between the motor lead wires and the inlet wires, and further improving the insulation performance and safety performance of the motor.

[0055] like Figure 3 In some implementation methods,

[0056] Along the circumferential direction of the first insulating frame 1, the second lead-out slot 8 is located between the first lead-out slot 7 and the third lead-out slot 9, and the width of the second lead-out slot 8 along the circumferential direction is w1, the width of the first lead-out slot 7 and the width of the third lead-out slot 9 are both w2, and w1 > 2.6 mm. Where I is the magnitude of the phase current of the motor under rated operation;

[0057] The width of each of the multiple inlet slots along the circumferential direction is also w1.

[0058] In this invention, the central lead-out slot preferably also serves as the inlet slot for the second phase winding. The width w1 of the central lead-out slot is the same as the width of the winding's inlet and outlet slots, ensuring that the width w1 of the central lead-out slot satisfies the relationship w1 > 2.6 mm. This facilitates winding by the winding machine through the inlet and outlet slots during mass production, improving the efficiency of motor prototyping. The width w2 of the two side lead-out slots satisfies the relationship... For electrical safety considerations, thicker leads are required for higher currents, necessitating a wider slot. Preferably, the slot width w2 satisfies the aforementioned relationship, allowing for better planning of lead position and ensuring the leads can be placed within the slot. This facilitates the subsequent assembly of the first insulating frame and the first cover plate. Simultaneously, it adapts to different currents and lead widths, improving the frame's applicability. By limiting the slot width, this invention addresses wear and noise issues while adapting the slot width to lead wires of varying currents, ensuring electrical safety.

[0059] The present invention further preferably features that the spacing between two adjacent cable outlet slots is equal.

[0060] like Figure 3 In some implementation methods,

[0061] Among the multiple winding inlet slots, along the axial direction of the first insulating frame 1, the axial depth of the inlet slot with the largest axial depth is h1, the axial depth of the inlet slot with the smallest axial depth is h2, and the axial depth of the lead-out slot 2 is h, with h2 < h < h1.

[0062] like Figure 3As shown, the first insulating frame of the present invention has inlet and outlet slots of different depths. During winding, the inlet slot of the first phase is the deepest in a counterclockwise direction, and the inlet slot of the last phase is the shallowest. The maximum and minimum depths of the inlet slots of the frame winding are h1 and h2, respectively. Preferably, the depths h of the three outlet slots and the outlet slots satisfy the relationship h2 < h < h1. When h > h1, that is, when the height of the inlet slot of the first phase winding is lower than that of the second phase, after the first phase winding is wound, the first phase winding will pass through the inlet slot of the second phase winding, hindering the winding. The motor enters the inlet slot of the second phase winding. Similarly, when h < h2, it hinders the winding of the third phase winding. Making h2 < h < h1 ensures that the three phase windings are arranged at different heights in the axial direction, further eliminating the phenomenon of crossing and preventing phase-to-phase short circuits caused by contact between different phase windings. This further improves the phase-to-phase insulation strength of the motor. By satisfying the height relationship limit through the above-mentioned lead-out slots, this invention can ensure that while solving the main problem, it can also avoid the occurrence of other problems, such as phase-to-phase short circuits caused by height crossing.

[0063] In some implementations...

[0064] It also includes a second insulating frame 5, with the first insulating frame 1 located above the second insulating frame 5. The first insulating frame 1 is assembled at the upper end of the stator core 6, and the second insulating frame 5 is assembled at the lower end of the stator core 6. The lead wire slot 2 is opened from the upper end of the first insulating frame 1 downward to form a vertical blind slot structure. The first phase inlet slot 3 and the third phase inlet slot 4 are also opened from the upper end of the first insulating frame 1 downward to form a vertical blind slot structure.

[0065] The present invention further improves upon this invention by setting a second insulating frame, which forms a lower insulating frame below and a first insulating frame forms an upper insulating frame above. The motor lead wire slot and inlet are both located on the upper insulating frame, ensuring that both the motor lead wire crossing and lead-out occur on the upper insulating frame, while the wiring is done on the lower insulating frame. This allows the motor lead wire assembly to be led out from the upper half of the compressor, preventing wear between the lead wire and the lower housing, improving the overall insulation performance, and reducing the interaction force between the lead wire assembly and the compressor core. This prevents the lead wire from pulling on the compressor core structure and causing it to shake, thereby reducing vibration noise during operation and improving the stability and reliability of the compressor. This invention can improve motor insulation and vibration reduction performance without increasing the overall size of the compressor, or effectively reduce the overall size while maintaining insulation and vibration reduction performance.

[0066] In some implementations...

[0067] It also includes a first cover plate 11 and a second cover plate 12. The first cover plate 11 is disposed on the axial upper end surface of the first insulating frame 1 and covers the upper end of at least a portion of the structure of the first insulating frame 1. The second cover plate 12 is disposed on the axial lower end surface of the second insulating frame 5 and covers the lower end of at least a portion of the structure of the second insulating frame 5.

[0068] The present invention further improves the insulation performance of the first insulating frame and the second insulating frame by providing the first cover plate and the second cover plate.

[0069] In some implementations...

[0070] The first insulating frame 1 is provided with a mating hole 10, which is located on the circumferential side of the first insulating frame 1. The first insulating frame 1 is assembled with the first cover plate 11 through the mating hole 10. The first insulating frame 1 also includes a frame base plate 13. The minimum distance between the bottom of the mating hole 10 and the frame base plate 13 is h3. Where z is the number of turns of the winding, Φ is the wire diameter of the winding, c is the length of the skeleton tooth 20 of the first insulating skeleton 1 along the radial direction of the insulating skeleton, and there is a distance h4 between the top of the mating hole 10 and the top of the first insulating skeleton 1, satisfying the relationship h4>2mm.

[0071] like Figure 3 As shown, the lead-out slots on the first insulating frame of the present invention are provided with holes on both sides that mate with the cover plate. Since the winding has a certain height after the winding is completed at the tooth section, when the lead-out slots are directly opposite the tooth section, the outer side of the winding will be exposed, increasing the risk of winding twisting. Therefore, preferably, the position of the mating hole is flush with the tooth section of the frame, so as not to occupy the position of the lead-out slot. In addition, the distance h3 between the bottom of the mating hole and the bottom plate of the frame satisfies the following relationship. Where z is the number of turns in the motor design, Φ is the wire diameter in the motor design, and c is the length of the skeleton teeth. To prevent the mating hole from being lower than the coil height, which would affect the fit with the cover plate, and since the diameter of the mating buckle on the cover plate is larger than the outer diameter of the mating hole, it is an interference fit. Therefore, preferably, the distance h4 between the top of the mating hole and the top of the skeleton satisfies the relationship h4 > 2mm. This can stabilize the assembly between the first insulating skeleton and the first cover plate, prevent the top of the mating hole from being too thin, which would cause the cover plate to break when it fits the skeleton, ensure the strength of the skeleton, improve the trial production qualification rate of the skeleton product, and ensure the strength of the skeleton while solving the noise problem.

[0072] In some implementations...

[0073] The first cover plate 11 is an arc-shaped plate structure with arcs on both the inner and outer circumferences. The span a2 of the arc-shaped plate structure in the circumferential direction satisfies the relationship 120°<a2<160°. The first insulating frame 1 is provided with a mating hole 10, which is located on the circumferential side of the first insulating frame 1. The first cover plate 11 is provided with a buckle 14 that is mated and fixed with the mating hole 10 of the first insulating frame 1. The circumferential span a1 of the buckle 14 satisfies the relationship 10°<a1<20°.

[0074] like Figure 4 The diagram shows the structure of the first insulating frame and the first cover plate that cooperates with it according to the present invention. The first cover plate mainly cooperates with the first frame and its function is to fix the outlet position of the three-phase lead wires and prevent the lead wires from rubbing against the cylinder seat, which would cause wear on the lead wires. The cover plate is fan-shaped, and its inner and outer diameters are concentric with the frame. The circumferential span of the entire first cover plate 11 is a2. Preferably, the circumferential span of the cover plate satisfies 120° < a2 < 160°. Within this range, it can cover all lead wire slots, fix the lead wire positions, and simplify the cover plate structure. Two fixing buckles are provided on the first cover plate. The connector is fixed in place with the mating holes (fixing holes) on the first frame. After assembly, the lead wire slot is located between the two fixing clips. Preferably, the circumferential span a1 of the clip satisfies the relationship 10° < a1 < 20°, which can provide sufficient space for the middle lead wire slot. When the clip span is large, the required width of the mating hole increases accordingly, affecting the arrangement of the lead wire slots on the first insulating frame. When the clip span is small, the stability of the mating with the hole decreases, and the first cover plate is at risk of falling off, affecting the overall assembly. This ensures stable clip mating and stable overall assembly, thereby reducing possible noise during operation.

[0075] In some implementations...

[0076] The first cover plate 11 is an arc-shaped plate structure with arc-shaped inner and outer circumferences, and the second cover plate 12 is an annular structure. The inner diameter of the first cover plate 11 and the second cover plate 12 is d1, the outer diameter of the first cover plate 11 and the maximum outer diameter of the second cover plate 12 are both d2, the inner diameter of the first insulating frame 1 and the second insulating frame 5 are both d3, and the outer diameter of the first insulating frame 1 and the second insulating frame 5 are both d4, and the relationship d3 < d1 < d2 < d4 is satisfied.

[0077] like Figure 4 and 5The diagram shows the structural forms of the first and second cover plates of the present invention. The inner and outer diameters of the two cover plates are the same, d1 and d2 respectively. The inner and outer diameters of the first and second frames are the same, d3 and d4 respectively. Preferably, the inner and outer diameters of the cover plates and the frames satisfy the relationship d3 < d1 < d2 < d4. The inner diameter of the cover plate should be larger than the inner diameter of the frame to prevent friction between the cover plate and the rotor. The outer diameter of the cover plate is smaller than the outer diameter of the frame, so that the fit between the cover plate and the frame is completed without increasing the outer diameter of the overall frame, leaving more space for the whole machine; or reducing wear and noise while reducing the overall size of the machine.

[0078] In some implementations...

[0079] The second cover plate 12 is also provided with an upwardly extending elongated structure 15, which extends upward into the stator slot 19 of the stator core 6. The axial height of the elongated structure 15 along the axial direction of the second insulating frame 5 is h5, and the axial height of the stator core 6 is h6. h5 and h6 satisfy the following relationship:

[0080] like Figure 5-6 The diagram shows the second cover plate of the present invention, which mates with the second insulating frame. The structure of the second cover plate is different from that of the first cover plate. The second cover plate has a protruding strip. After the lead wire is connected at the end of the second insulating frame, it needs to pass through the stator core slot and finally exit at the end of the first insulating frame. To prevent the lead wire from falling out of the slot, a protruding strip is provided at the end of the second cover plate. When the second cover plate is assembled with the second insulating frame, the strip is located at the stator slot opening 19, which can constrain the axial position of the lead wire and prevent it from getting caught in the stator-rotor gap and causing a short circuit. Preferably, the height h5 of the protruding strip on the second cover plate satisfies the relationship h6 of the stator core. Within this range, the length of the strip can be guaranteed to constrain the position of the lead wire, preventing the lead wire from falling out of the stator slot and rubbing against the rotor during operation, causing wear and short circuit of the lead wire. At the same time, it can prevent the cover plate from being not fully injected at the end of the strip during injection molding when h5 exceeds 15mm, thus reducing the strength of the frame. It can ensure the constraint of the lead wire position and reduce friction while ensuring the process feasibility of the frame.

[0081] The present invention also provides an electric motor (preferably a permanent magnet synchronous motor), which includes the aforementioned insulating frame structure, as well as a stator core and windings, wherein the insulating frame structure is fitted with the stator core and then the windings are wound.

[0082] This invention prevents cross-short circuits between the motor leads and input wires, greatly improving the motor's insulation and safety performance. Furthermore, without increasing the overall size, it optimizes the insulation frame structure and changes the lead-out direction of the lead-out assembly, avoiding friction between the lead-out assembly and the housing, thus improving the motor's insulation performance. Simultaneously, it reduces the force between the lead-out assembly and the motor core, lowering vibration and noise during operation, improving overall stability, and reducing the overall size of the machine.

[0083] The present invention also provides a compressor that includes the aforementioned motor.

[0084] See Figure 7-8 The insulating skeleton described in this invention was actually verified, and the modal frequencies of the lower lead wire and the upper lead wire described in this invention were compared. Figure 7 As shown, by using the skeleton structure of this patent, the modal frequency of the lead wire is reduced by 34.5% after it is led out, the high-frequency vibration is effectively suppressed, and the overall stability of the machine is improved. At the same time, compared with the original skeleton structure, the overall volume of the motor is reduced by 7.7% after the lead wire is led out in the upper part of the machine by the skeleton structure of this invention, leaving more space for the compressor.

[0085] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. An insulating frame structure, characterized in that: include: The first insulating frame (1) has at least one lead wire slot (2) and multiple winding inlet slots. The inlet slots include a first phase inlet slot (3) and a third phase inlet slot (4). The first phase inlet slot (3) and the third phase inlet slot (4) are spaced apart in the circumferential direction of the first insulating frame (1), and the lead wire slot (2) is located between the first phase inlet slot (3) and the third phase inlet slot (4).

2. The insulating frame structure according to claim 1, characterized in that: The lead-out slot (2) includes a first lead-out slot (7), a second lead-out slot (8), and a third lead-out slot (9). The first insulating frame (1) is a ring structure. Along the circumferential direction of the first insulating frame (1), the first lead-out slot (7), the second lead-out slot (8), and the third lead-out slot (9) are arranged in sequence, and the first lead-out slot (7), the second lead-out slot (8), and the third lead-out slot (9) are all located between the first phase inlet slot (3) and the third phase inlet slot (4).

3. The insulating frame structure according to claim 2, characterized in that: Along the circumferential direction of the first insulating frame (1), the second lead slot (8) is located between the first lead slot (7) and the third lead slot (9), and the width of the second lead slot (8) along the circumferential direction is w1, the width of the first lead slot (7) and the width of the third lead slot (9) are both w2, and w1 > 2.6 mm. Where I is the magnitude of the phase current of the motor under rated operation; The width of each of the multiple inlet slots along the circumferential direction is also w1.

4. The insulating frame structure according to claim 1, characterized in that: Among the multiple winding inlet slots, along the axial direction of the first insulating frame (1), the axial depth of the inlet slot with the largest axial depth is h1, the axial depth of the inlet slot with the smallest axial depth is h2, the axial depth of the lead-out slot (2) is h, and h2 < h < h1.

5. The insulating frame structure according to claim 1, characterized in that: It also includes a second insulating frame (5), the first insulating frame (1) is located above the second insulating frame (5), the first insulating frame (1) is assembled on the upper end of the stator core (6), and the second insulating frame (5) is assembled on the lower end of the stator core (6); the lead wire slot (2) is opened from the upper end of the first insulating frame (1) downward to form a vertical blind slot structure, and the first phase inlet slot (3) and the third phase inlet slot (4) are also opened from the upper end of the first insulating frame (1) downward to form a vertical blind slot structure.

6. The insulating frame structure according to claim 5, characterized in that: It also includes a first cover plate (11) and a second cover plate (12). The first cover plate (11) is disposed on the axial upper end surface of the first insulating frame (1) and covers the upper end of at least a portion of the structure of the first insulating frame (1). The second cover plate (12) is disposed on the axial lower end surface of the second insulating frame (5) and covers the lower end of at least a portion of the structure of the second insulating frame (5).

7. The insulating frame structure according to claim 6, characterized in that: The first insulating frame (1) is provided with a mating hole (10), which is located on the circumferential side of the first insulating frame (1). The first insulating frame (1) is assembled with the first cover plate (11) through the mating hole (10). The first insulating frame (1) also includes a frame base plate (13). The minimum distance between the bottom of the mating hole (10) and the frame base plate (13) is h3. Where z is the number of turns of the winding, Φ is the wire diameter of the winding, c is the length of the skeleton tooth (20) of the first insulating skeleton (1) along the radial direction of the insulating skeleton, and there is a distance h4 between the top of the mating hole (10) and the top of the first insulating skeleton (1), satisfying the relationship h4>2mm.

8. The insulating frame structure according to claim 6, characterized in that: The first cover plate (11) is an arc-shaped plate structure with arcs on both the inner and outer circumferences. The span a2 of the arc-shaped plate structure in the circumferential direction satisfies the relationship 120°<a2<160°. The first insulating frame (1) is provided with a mating hole (10). The mating hole (10) is located on the circumferential side of the first insulating frame (1). The first cover plate (11) is provided with a buckle (14) that is fixed to the mating hole (10) of the first insulating frame (1). The circumferential span a1 of the buckle (14) satisfies the relationship 10°<a1<20°.

9. The insulating frame structure according to claim 6, characterized in that: The first cover plate (11) is an arc-shaped plate structure with arcs on both the inner and outer circumferences. The second cover plate (12) is an annular structure. The inner diameters of the first cover plate (11) and the second cover plate (12) are both d1. The outer diameters of the first cover plate (11) and the maximum outer diameter of the second cover plate (12) are both d2. The inner diameters of the first insulating frame (1) and the second insulating frame (5) are both d3. The outer diameters of the first insulating frame (1) and the second insulating frame (5) are both d4, and the relationship d3 < d1 < d2 < d4 is satisfied.

10. The insulating frame structure according to claim 6, characterized in that: The second cover plate (12) is also provided with an upwardly extending strip structure (15), which can extend upward into the stator slot (19) of the stator core (6). The axial height of the strip structure (15) along the axial direction of the second insulating frame (5) is h5, and the axial height of the stator core (6) is h6. h5 and h6 satisfy the following relationship.

11. An electric motor, characterized in that: The insulating skeleton structure included in any one of claims 1-10 further includes a stator core and windings, wherein the insulating skeleton structure is fitted with the stator core and then the windings are wound.

12. A compressor, characterized in that: Includes the motor as described in claim 11.

Images