Insulation framework, stator assembly, motor, compressor and refrigeration equipment

Abstract

The invention provides an insulating framework, a stator assembly, a motor, a compressor and refrigeration equipment. The insulating framework comprises a framework main body, a yoke part fixing buckle and a boot part fixing buckle, the yoke part fixing buckle comprises a first extending part and a first buckling part, the first extending part is connected to the radial outer side of the outer check ring and extends in the axial direction of the framework body, and the first buckling part is arranged at the free end of the first extending part; the boot fixing buckle comprises a second extending part and a second buckling part, the second extending part is connected to the inner baffle and extends in the axial direction of the framework body, and the second buckling part is arranged at the free end of the second extending part. And in the radial direction of the outer check ring, the first buckling part and the second buckling part are arranged towards the central axis of the outer check ring. The insulation framework can reduce motor resistance, reduce motor copper consumption, increase motor efficiency and reduce cost.

Description

Technical Field

[0001] The present invention relates to the field of motors, and in particular to an insulating frame, a stator assembly, a motor, a compressor and a refrigeration device. Background Art

[0002] Permanent magnet synchronous motors have been widely used in many fields and have achieved good results due to their simple structure, high efficiency, large output torque, adjustable speed, small size and light weight. Especially in the field of refrigeration compressors, with the release of the new national standard, there are higher requirements for improving the energy efficiency of compressors. In view of the improvement of energy efficiency levels, existing refrigeration compressors mostly use permanent magnet synchronous motors as power components to improve the energy efficiency of compressors.

[0003] At present, the use of concentrated winding permanent magnet synchronous motors in piston compressors has become more common. The stator of a permanent magnet synchronous motor is generally composed of an insulating skeleton at both ends and a stator core, and copper wire or aluminum wire is wound around the teeth of the stator core to complete the motor stator trial production. The insulating skeleton has the same size as the inner diameter of the stator and the size of the teeth. The height of the insulating skeleton teeth at both ends is included when winding, so the radius of the ends of the winding becomes larger, the utilization rate of the copper wire decreases, the resistance and copper loss increase, and the motor efficiency is low.

[0004] See also Figures 1 to 3 The existing motor insulation skeleton includes a lead-out end insulation skeleton 10 and a cross-line end insulation skeleton 20. The two types of skeletons are used together. The lead-out end insulation skeleton 10 is used to connect the three-phase winding and is generally provided with a piercing terminal interface 101 for connecting the lead-out wire assembly; the cross-line end insulation skeleton 20 is provided with a cross-line groove 201 for routing between each phase during the winding process. Due to the different structures of the two insulation skeletons, different production molds are required, which increases the cost of the motor.

[0005] Piston compressors are characterized by their small size and are currently more commonly used in refrigerators. In order to obtain a larger capacity, the compressors are often limited in height. If the height is too high, a large amount of space will be wasted. Large-displacement piston compressors require a higher motor stack height, so the matching distance between the motor and the cylinder seat 30 of the compressor pump body is greatly reduced, affecting the heat dissipation of the motor and causing increased losses. At the same time, the design of the overly high cross-line end insulating frame 20 will also cause interference between the cross-line end insulating frame 20 and the cylinder seat 30 of the pump body. The height of the cylinder seat machine foot 301 needs to be increased between the cross-line end insulating frame 20 and the cylinder seat 30 of the pump body to ensure normal assembly, which will increase the height of the entire compressor. Summary of the invention

[0006] The first object of the present invention is to provide an insulating skeleton that can reduce motor resistance, reduce motor copper loss, increase motor efficiency, and reduce costs.

[0007] A second object of the present invention is to provide a stator assembly having the above insulation frame.

[0008] A third object of the present invention is to provide a motor having the above stator assembly.

[0009] A fourth object of the present invention is to provide a compressor having the above motor.

[0010] A fifth object of the present invention is to provide a refrigeration device having the above compressor.

[0011] To achieve the above first purpose, the present invention provides an insulating skeleton, including a skeleton body, the skeleton body including: an outer retaining ring, the outer retaining ring is annular; an inner retaining ring, the inner retaining ring is located on the radial inner side of the outer retaining ring, and the inner retaining ring includes a plurality of inner retaining plates arranged at intervals along the circumference of the outer retaining ring; a winding part, the number of the winding parts is the same as the number of the inner retaining plates, the winding parts and the inner retaining plates are arranged one by one, and each winding part is arranged between the corresponding inner retaining plate and the outer retaining ring; the insulating skeleton also includes a yoke fixing buckle and a boot fixing buckle; the yoke fixing buckle includes a first extension part and a first buckle part, the first extension part is connected to the radial outer side of the outer retaining ring and extends along the axial direction of the skeleton body, and the first buckle part is arranged at the free end of the first extension part; the boot fixing buckle includes a second extension part and a second buckle part, the second extension part is connected to the inner retaining plate and extends along the axial direction of the skeleton body, and the second buckle part is arranged at the free end of the second extension part. In the radial direction of the outer retaining ring, the first buckle part and the second buckle part are both arranged toward the central axis of the outer retaining ring.

[0012] As can be seen from the above scheme, the insulating skeleton adopts a single-sided skeleton structure design, so that the other side of the motor is not affected by the skeleton teeth, the winding radius can be reduced, the copper consumption is reduced, the resistance is reduced, the motor copper loss is reduced, and the motor efficiency is increased. This solves the problem that the existing motor has a large winding radius due to the skeleton tooth structure, and the copper consumption is large, resulting in increased resistance, thereby increasing the motor efficiency with reduced copper loss.

[0013] At the same time, through the single-side frame structure design, the insulation frame of the motor is changed from the existing two different types of frames to a single insulation frame set on the single side, saving the mold and cost of the motor frame. This solves the problem that the existing two insulation frames have different structures, so different production molds are required, which increases the cost of the motor.

[0014] When the insulating frame is applied to a piston compressor, by matching the motor with the insulating frame with the piston compressor pump body structure, the motor close to the pump body structure has no frame structure, which can increase the gap between the motor and the pump body, which is beneficial to heat dissipation and oil return during operation. This solves the problem of poor heat dissipation effect of the motor caused by the small gap between the existing motor and the compressor pump body structure.

[0015] Thirdly, the existing double-sided frame design will increase the height of the cylinder base foot design, while the single-sided insulating frame design can reduce the height of the cylinder base foot, thereby improving space utilization. This solves the problem of the high height of the compressor caused by avoiding assembly interference between the motor and the pump body in the existing compressor.

[0016] In addition, through the single-sided skeleton structure design, the skeleton buckle design can firmly fix the stator core of the scattered pieces, and no longer need to be stacked and fixed by buckling points or welding, so the core loss at the buckling points or welding points of the core can be eliminated. Thus, the problem of increased core loss of the motor stator core caused by the existence of fixed buckling points or welding is solved.

[0017] A preferred solution is that the number of the yoke fixing buckles is more than two, and the yoke fixing buckles are arranged at intervals along the circumference of the outer retaining ring.

[0018] It can be seen that the multiple yoke fixing clips can ensure the stability of the connection between the stator core and the insulating frame.

[0019] A preferred solution is that at least one inner baffle is provided with more than two boot fixing buckles.

[0020] It can be seen that the provision of multiple shoe fixing buckles can improve the stability of fixing the stator core shoe.

[0021] A further solution is that at least one inner baffle is provided with boot fixing buckles at both ends of the circumferential direction of the skeleton body.

[0022] It can be seen that both ends of the inner baffle are provided with boot fixing buckles to ensure the force balance on both sides of the boot, thereby further improving the stability of the connection between the insulating frame and the stator core, and the stability of the fixed connection between the stator core loose sheets.

[0023] A preferred solution is that the yoke fixing buckle also includes a first supporting portion, which is arranged at an end of the first extending portion away from the first buckling portion, and the first supporting portion extends outward from the outer wall of the outer retaining ring along the radial direction of the skeleton body.

[0024] It can be seen that the provision of the first support portion ensures that the yoke fixing buckle can fix the stator core from the radial outside of the stator core, avoiding interference between the yoke fixing buckle and the stator core.

[0025] A preferred solution is that the boot fixing buckle also includes a second supporting portion, which is arranged at an end of the second extension portion away from the second buckling portion, and the second supporting portion extends from the side wall of the inner baffle toward the outer baffle along the radial direction of the skeleton body.

[0026] It can be seen that the setting of the second support part ensures that the boot fixing buckle can fix the boot of the stator core from the side of the inner baffle plate toward the outer baffle ring, so that the boot fixing buckle is located in the winding groove surrounded by two adjacent teeth, thereby avoiding interference of the boot fixing buckle with the rotor.

[0027] A preferred solution is that a wire-crossing groove is further provided on the outer retaining ring, the wire-crossing groove is located on the peripheral wall of the outer retaining ring, and the wire-crossing groove is recessed along the axial direction of the skeleton body from one end of the outer retaining ring away from the yoke fixing buckle.

[0028] A preferred solution is that a piercing terminal interface is also provided on the outer retaining ring, and the piercing terminal interface is provided on the outer peripheral wall of the outer retaining ring and is located radially outside the outer retaining ring.

[0029] It can be seen that the piercing terminal interface is used to set a joint electrically connected to the winding to achieve electrical connection between the winding and the outside. In the two existing types of insulating frames, the outer wall of the lead-out end insulating frame is not provided with a cross-wire groove and a buckle, and the cross-wire end insulating frame does not have a piercing terminal interface. Now the piercing terminal interface, the cross-wire groove and the buckle are designed on the same side, so that one side of the insulating frame can be omitted.

[0030] A preferred solution is that a stator core mounting position is provided on one side of the skeleton body in the axial direction of the skeleton body, and the stator core mounting position includes a yoke portion, a tooth portion and a boot portion, the tooth portion extends radially along the yoke portion, and the boot portion is connected to the end of the tooth portion away from the yoke portion; the outer retaining ring and the yoke portion are correspondingly arranged in the axial direction of the skeleton body, the inner retaining plate and the boot portion are correspondingly arranged in the axial direction of the skeleton body, the winding portion and the tooth portion are correspondingly arranged in the axial direction of the skeleton body, the first buckling portion is located on the side of the yoke portion away from the skeleton body, and the first buckling portion is arranged toward the yoke portion; the second buckling portion is located on the side of the boot portion away from the skeleton body, and the second buckling portion is arranged toward the boot portion.

[0031] To achieve the above-mentioned second purpose, the present invention provides a stator assembly, including a stator core, a winding and the above-mentioned insulating frame; the stator core includes a yoke portion, a tooth portion and a boot portion, the winding is wound outside the tooth portion and the winding portion, and the winding portion isolates the first end of the tooth portion from the winding; the first buckling portion cooperates with the yoke portion at the axial upper limit position of the frame body, and the second buckling portion cooperates with the boot portion at the axial upper limit position of the frame body.

[0032] It can be seen that the insulating skeleton is fixed to the stator core by the yoke fixing buckle and the boot fixing buckle. The stator core is processed into motor stator punching sheets by wire cutting process from silicon steel sheets. The motor stator punching sheets are stacked to form the motor stator core, and then fixed by the insulating skeleton of the present invention. There is no need to fix the motor stator punching sheets by buckle points or welding. After the motor stator core is fixed, normal winding machine or manual winding can be performed. The wiring between each phase winding is distributed through the cross-wire slots set on the yoke of the insulating skeleton. After the winding is completed, the lead wire assembly can be connected by piercing the terminal crimping.

[0033] A preferred solution is that an insulating slot paper is provided at one end of the tooth portion away from the winding portion, and the insulating slot paper isolates the second end of the tooth portion from the winding. The first end of the tooth portion and the second end of the tooth portion are arranged opposite to each other along the axial direction of the frame body.

[0034] It can be seen that the insulating slot paper can achieve electrical insulation between the teeth of the stator core and the winding.

[0035] To achieve the third objective, the present invention provides a motor including the stator assembly described above.

[0036] To achieve the fourth objective, the present invention provides a compressor comprising the above-mentioned motor.

[0037] A preferred solution is that the compressor further includes a cylinder seat, which is located on a side of the motor away from the skeleton body; the cylinder seat is provided with machine feet, and the cylinder seat is fixedly connected to the stator core via the machine feet.

[0038] It can be seen that in a piston compressor, by matching the motor with the insulating skeleton of the present invention with the piston compressor pump body structure, the motor close to the pump body structure has no skeleton structure, which can increase the gap between the motor and the pump body, which is beneficial to heat dissipation and oil return during operation, thereby solving the problem of poor heat dissipation effect of the motor caused by the small gap between the existing motor and the compressor pump body structure. At the same time, the existing double-sided skeleton design will increase the height of the cylinder base machine foot design, while the single-sided insulating skeleton design can reduce the height of the cylinder base machine foot, thereby improving space utilization.

[0039] To achieve the fifth objective, the present invention provides a refrigeration device comprising the above-mentioned compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural diagram of the motor and cylinder base in an existing compressor embodiment.

[0041] Figure 2 It is a structural diagram of the cross-line end insulation skeleton in the existing compressor embodiment.

[0042] Figure 3It is a structural diagram of the insulating skeleton of the lead-out terminal in the existing compressor embodiment.

[0043] Figure 4 1 is a structural diagram of a motor and a cylinder block in an embodiment of a compressor of the present invention.

[0044] Figure 5 1 is a structural diagram of a stator assembly in a compressor embodiment of the present invention.

[0045] Figure 6 yes Figure 5 A partial enlarged view of point A in the middle.

[0046] Figure 7 It is a structural diagram of an insulating skeleton embodiment of the present invention.

[0047] Figure 8 yes Figure 7 A partial enlarged view of point B in the middle.

[0048] The present invention is further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0049] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, rather than as limitations.

[0050] The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0051] In the present invention, when a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediate device, or may not be directly connected to the other devices but have an intermediate device.

[0052] All terms (including technical terms or scientific terms) used in the present invention have the same meanings as those understood by ordinary technicians in the field, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0053] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0054] See also Figure 4 The refrigeration device in this embodiment includes a compressor, the refrigeration device is a refrigerator, and the compressor is a piston compressor.

[0055] The compressor includes a motor 11, a pump body (not shown) and a cylinder seat 12. The pump body is mounted on the motor 11 through the cylinder seat 12. The cylinder seat 12 is located on the side of the motor 11 away from the skeleton body 6 described below. The cylinder seat 12 is provided with a foot 121. The cylinder seat 12 is fixedly connected to the stator core 2 of the motor 11 through the foot 121. The extension direction of the foot 121 is parallel to the axial direction of the motor 11. The foot 121 is fixedly connected to the stator core 2 through screws.

[0056] See also Figures 4 to 7 The motor 11 includes a stator assembly 13 and a rotor assembly (not shown), and the stator assembly 13 includes a stator core 2, a winding 3 and an insulating frame 4. The stator core 2 includes a yoke 21, six teeth 22 and six boots 23. The yoke 21 is annular, and each tooth 22 extends from the inner circumferential wall of the yoke 21 toward the central axis of the yoke 21 along the radial direction of the yoke 21. The boots 23 are arranged one by one, and each boot 23 is connected to an end of the corresponding tooth 22 away from the yoke 21. Each boot 23 surrounds a rotor mounting portion 5, and the rotor assembly is mounted in the rotor mounting portion 5. The insulating frame 4 is mounted on the stator core 2, and the winding 3 is wound outside the tooth portion 22 and the winding portion 63 of the insulating frame 4. The winding portion 63 isolates the first end of the tooth portion 22 from the winding 3. An insulating slot paper (not shown) is provided at one end of the tooth portion 22 away from the winding portion 63, and the insulating slot paper isolates the second end of the tooth portion 22 from the winding 3. The first end of the tooth portion 22 and the second end of the tooth portion 22 are arranged opposite to each other along the axial direction of the frame body 6.

[0057] The insulating frame 4 includes a frame body 6 , a yoke fixing buckle 7 and a boot fixing buckle 8 .

[0058] The skeleton body 6 includes an outer retaining ring 61, an inner retaining ring 62 and a winding portion 63. The outer retaining ring 61 is annular, the inner retaining ring 62 is located radially inside the outer retaining ring 61, and the inner retaining ring 62 includes six inner baffles 621 arranged at intervals along the circumference of the outer retaining ring 61. The number of the winding portions 63 is the same as the number of the inner baffles 621. The winding portions 63 and the inner baffles 621 are arranged in a one-to-one correspondence, and each winding portion 63 is arranged between the corresponding inner baffle 621 and the outer retaining ring 61.

[0059] In the axial direction of the skeleton body 6, a stator core mounting position 9 is provided on one side of the skeleton body 6. The stator core mounting position 9 includes a yoke portion 91, six tooth portions 92 and six shoe portions 93. The tooth portion 92 extends along the radial direction of the yoke portion 91, and the shoe portion 93 is connected to one end of the tooth portion 92 away from the yoke portion 91. The stator core 2 is provided at the stator core mounting position 9, the yoke portion 21 is located at the yoke portion 91, the tooth portion 22 is located at the tooth portion 92, and the shoe portion 23 is located at the shoe portion 93.

[0060] The outer retaining ring 61 and the yoke 21 are arranged correspondingly in the axial direction of the skeleton body 6, the inner retaining plate 621 and the boot 23 are arranged correspondingly in the axial direction of the skeleton body 6, and the winding part 63 and the tooth part 22 are arranged correspondingly in the axial direction of the skeleton body 6.

[0061] In this embodiment, there are four yoke fixing buckles 7, which are spaced and evenly arranged along the circumference of the outer retaining ring 61. There are twelve boot fixing buckles 8, and each inner baffle 621 is provided with two boot fixing buckles 8. The two boot fixing buckles 8 on each inner baffle 621 are respectively arranged at two ends of the inner baffle 621 in the circumferential direction of the skeleton body 6.

[0062] The yoke fixing buckle 7 includes a first supporting portion 71, a first extending portion 72 and a first buckling portion 73 which are connected in sequence. The first extending portion 72 is connected to the radial outer side of the outer retaining ring 61 and extends along the axial direction of the skeleton body 6. The first buckling portion 73 is arranged at the free end of the first extending portion 72. The first buckling portion 73 is located on the side of the yoke 21 away from the skeleton body 6. The first buckling portion 73 is arranged toward the yoke 21. The first buckling portion 73 cooperates with the yoke 21 in the axial upper limit of the skeleton body 6. The first supporting portion 71 is arranged at one end of the first extending portion 72 away from the first buckling portion 73. The first supporting portion 71 extends outward from the outer wall of the outer retaining ring 61 along the radial direction of the skeleton body 6. The arrangement of the first supporting portion 71 ensures that the yoke fixing buckle 7 can fix the stator core 2 from the radial outer side of the stator core 2, avoiding interference between the yoke fixing buckle 7 and the stator core 2.

[0063] See also Figure 7 and Figure 8The boot fixing buckle 8 includes a second supporting portion 81, a second extending portion 82 and a second buckling portion 83 connected in sequence. The second extending portion 82 is connected to the inner baffle 621 and extends along the axial direction of the skeleton body 6. The second buckling portion 83 is arranged at the free end of the second extending portion 82. The second buckling portion 83 is located on the side of the boot 23 away from the skeleton body 6. The second buckling portion 83 is arranged toward the boot 23. The second buckling portion 83 cooperates with the boot 23 in the axial upper limit of the skeleton body 6. The second supporting portion 81 is arranged at one end of the second extending portion 82 away from the second buckling portion 83. The second supporting portion 81 extends from the side wall of the inner baffle 621 toward the outer retaining ring 61 along the radial direction of the skeleton body 6. The setting of the second support portion 81 ensures that the boot fixing buckle 8 can fix the boot 23 of the stator core 2 from the inner baffle plate 621 toward the side of the outer baffle ring 61, so that the boot fixing buckle 8 is located in the winding groove 24 surrounded by two adjacent teeth 22, thereby avoiding interference of the boot fixing buckle 8 with the rotor.

[0064] The outer retaining ring 61 is also provided with a cross-line groove 611, which is located on the peripheral wall of the outer retaining ring 61, and the cross-line groove 611 is recessed from the end of the outer retaining ring 61 away from the stator core installation position 9 along the axial direction of the skeleton body 6. The outer retaining ring 61 is also provided with a piercing terminal interface (not shown), which is provided on the outer peripheral wall of the outer retaining ring 61 and is located radially outside the outer retaining ring 61. The piercing terminal interface is used to set a joint electrically connected to the winding 3 to achieve electrical connection between the winding 3 and the outside. Figures 1 to 3 Among the two types of existing insulating frames shown, the outer wall of the lead-out wire end insulating frame 10 is not provided with a cross-wire groove 201, and the cross-wire end insulating frame 20 does not have a piercing terminal interface 101. The piercing terminal interface, the cross-wire groove 611 and the buckle are now designed on the same side, so that one side of the insulating frame 4 can be omitted.

[0065] In this embodiment, the insulating skeleton 4 is fixed to the stator core 2 by the yoke fixing buckle 7 and the boot fixing buckle 8. The stator core 2 is processed into stator punchings by the wire cutting process from silicon steel sheets. The stator punchings are stacked to form the stator core 2, and then fixed by the insulating skeleton 4 of the present invention, without the need to fix the stator punchings by buckle points or welding. After the stator core 2 is fixed, normal winding machine or manual winding can be performed. The wiring between each phase winding 3 is distributed through the cross-wire slot 611 set on the yoke 21 of the insulating skeleton 4. After the winding is completed, it can be connected to the lead wire assembly by crimping the piercing terminal.

[0066] As can be seen from the above, the existing motor has a large winding radius due to the structure of the insulating skeleton teeth, and it will increase with the increase of the thickness of the teeth, thereby reducing the winding utilization rate, increasing the motor resistance, and increasing the copper loss, thereby reducing its motor efficiency. The insulating skeleton in this embodiment is designed with a single-sided skeleton structure, so that one end of the motor is not affected by the insulating skeleton teeth, and the winding radius is reduced, so that the winding utilization rate is improved, the amount of copper used is reduced, thereby reducing the resistance, reducing the motor copper loss, and increasing the motor efficiency.

[0067] At the same time, through the single-side frame structure design, the insulation frame of the motor is changed from the existing two different types of frames to a single insulation frame set on the single side, saving the mold and cost of the motor frame. This solves the problem that the existing two insulation frames have different structures, so different production molds are required, which increases the cost of the motor.

[0068] In addition, by matching the motor with the insulating skeleton with the piston compressor pump body structure, the motor close to the pump body structure has no skeleton structure, which can increase the gap between the motor and the pump body, and reserve a large space for heat dissipation, which is beneficial to heat dissipation and oil return during operation. The problem of poor heat dissipation effect of the motor caused by the small gap between the existing motor and the compressor pump body structure is solved.

[0069] Thirdly, the existing double-sided frame design will increase the height of the cylinder base machine foot design, while the single-sided insulating frame design can compress the space of the original reserved frame, reduce the height of the cylinder base machine foot, and make the refrigerator obtain greater space utilization. This solves the problem of the high height of the compressor caused by avoiding assembly interference between the motor and the pump body in the existing compressor.

[0070] In addition, through the single-sided skeleton structure design, the skeleton buckle design can firmly fix the stator core of the scattered pieces, and no longer need to be stacked and fixed by buckling points or welding, so the core loss at the buckling points or welding points of the core can be eliminated. Thus, the problem of increased core loss of the motor stator core caused by the existence of fixed buckling points or welding is solved.

[0071] In addition, the number of yoke fixing buckles can also be one or more than two. When there are more than two, the yoke fixing buckles are arranged at intervals along the circumference of the outer retaining ring. The motor can also be an outer rotor motor. If it is an outer rotor motor, the teeth and boots of the stator core are both located radially outside the yoke. The number of teeth and boots of the stator core and the number of inner baffles and winding parts of the insulating skeleton can be changed as needed. At least one inner baffle can also be provided with more than two boot fixing buckles. At least one inner baffle can also be provided with boot fixing buckles at both ends of the circumferential direction of the skeleton body. The above changes can also achieve the purpose of the present invention.

[0072] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An insulating skeleton, comprising a skeleton body, wherein the skeleton body comprises: An outer retaining ring, wherein the outer retaining ring is ring-shaped; An inner retaining ring, the inner retaining ring being located radially inward of the outer retaining ring, the inner retaining ring comprising a plurality of inner retaining plates spaced apart along the circumference of the outer retaining ring; Winding parts, the number of which is the same as the number of the inner baffles, the winding parts and the inner baffles are arranged in a one-to-one correspondence, and each winding part is arranged between the corresponding inner baffle and the outer baffle; Features: The insulating frame also includes a yoke fixing buckle and a boot fixing buckle; The yoke fixing buckle comprises a first extension portion and a first buckling portion, wherein the first extension portion is connected to the radially outer side of the outer retaining ring and extends along the axial direction of the skeleton body, and the first buckling portion is arranged at the free end of the first extension portion; The boot fixing buckle comprises a second extension portion and a second buckling portion, the second extension portion is connected to the inner baffle and extends along the axial direction of the skeleton body, and the second buckling portion is arranged at a free end of the second extension portion; In the radial direction of the outer retaining ring, the first buckling portion and the second buckling portion are both arranged toward the central axis of the outer retaining ring.

2. The insulating frame according to claim 1, characterized in that: The number of the yoke fixing buckles is more than two, and the yoke fixing buckles are arranged at intervals along the circumference of the outer retaining ring.

3. The insulating frame according to claim 1, characterized in that: At least one of the inner baffles is provided with more than two of the boot fixing buckles.

4. The insulating frame according to claim 3, characterized in that: At least one of the inner baffles is provided with the boot fixing buckles at both ends of the circumferential direction of the skeleton body.

5. The insulating frame according to any one of claims 1 to 4, characterized in that: The yoke fixing buckle also includes a first supporting portion, which is arranged at an end of the first extending portion away from the first buckling portion, and the first supporting portion extends outward from the outer wall of the outer retaining ring along the radial direction of the skeleton body.

6. The insulating frame according to any one of claims 1 to 4, characterized in that: The boot fixing buckle also includes a second supporting portion, which is arranged at an end of the second extending portion away from the second buckling portion, and extends from the side wall of the inner baffle toward the outer baffle along the radial direction of the skeleton body.

7. The insulating frame according to any one of claims 1 to 4, characterized in that: The outer retaining ring is also provided with a cross-wire groove, which is located on the peripheral wall of the outer retaining ring and is recessed from one end of the outer retaining ring away from the yoke fixing buckle along the axial direction of the skeleton body.

8. The insulating frame according to any one of claims 1 to 4, characterized in that: The outer retaining ring is also provided with a piercing terminal interface, which is arranged on the outer peripheral wall of the outer retaining ring and is located radially outside the outer retaining ring.

9. The insulating frame according to any one of claims 1 to 4, characterized in that: In the axial direction of the skeleton body, a stator core mounting position is provided on one side of the skeleton body, and the stator core mounting position includes a yoke portion, a tooth portion and a shoe portion, the tooth portion extends radially along the yoke portion, and the shoe portion is connected to an end of the tooth portion away from the yoke portion; The outer retaining ring and the yoke portion are arranged in correspondence with each other in the axial direction of the frame body, the inner retaining plate and the boot portion are arranged in correspondence with each other in the axial direction of the frame body, and the winding portion and the tooth portion are arranged in correspondence with each other in the axial direction of the frame body; The first buckle portion is located at a side of the yoke portion away from the frame body, and the first buckle portion is arranged toward the yoke portion; The second buckling portion is located at a side of the boot portion away from the skeleton body, and the second buckling portion is arranged toward the boot portion.

10. A stator assembly, characterized in that: It comprises a stator core, a winding and an insulating frame as claimed in any one of claims 1 to 9; The stator core comprises a yoke, a tooth and a shoe, the winding is wound outside the tooth and the winding part, and the winding part isolates the first end of the tooth from the winding; The first buckling portion cooperates with the yoke portion at the axial upper limit position of the frame body, and the second buckling portion cooperates with the boot portion at the axial upper limit position of the frame body.

11. The stator assembly according to claim 10, characterized in that: An insulating slot paper is provided at one end of the tooth portion away from the winding portion, and the insulating slot paper isolates the second end of the tooth portion from the winding. The first end of the tooth portion and the second end of the tooth portion are arranged opposite to each other along the axial direction of the skeleton body.

12. A motor, characterized in that Comprising a stator assembly as claimed in claim 10 or 11.

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

14. The compressor according to claim 13, characterized in that: The compressor further comprises a cylinder seat, wherein the cylinder seat is located on a side of the motor away from the skeleton body; The cylinder seat is provided with mechanical feet, and the cylinder seat is fixedly connected to the stator core through the mechanical feet.

15. Refrigeration equipment, characterized in that Comprising a compressor as claimed in claim 13 or 14.

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