Rotor structure, variable frequency motor and compressor
By designing limiting parts and buffer parts in the motor of the rotor compressor, the noise and maintenance cost problems caused by magnet shaking are solved, and the effects of noise reduction and cost reduction are achieved.
Patent Information
- Application Number
- CN202420814332.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-04-18
AI Technical Summary
In the prior art, abnormal noise occurs in the motor of the rotor compressor due to the shaking of the magnet, and the magnet is prone to breakage and damage, which increases the maintenance cost.
A rotor structure is designed, including a rotor core, rotor magnets, limiting parts and buffer parts. The limiting component is in contact with the rotor magnet through the abutment part, and the buffer component is in contact with the rotor core through the buffer surface to prevent the magnet and the core from shaking.
It effectively reduces motor noise, avoids magnet rupture and damage, reduces maintenance costs, and improves air conditioner performance and motor reliability.
Smart Images
Figure CN222381410U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of compressors, and in particular to a rotor structure, a variable frequency motor and a compressor. Background Art
[0002] In the prior art, during the operation of the rotary compressor, the magnets in the compressor motor will shake in the rotor as they rotate with the rotor, causing the rotor motor to emit abnormal noise due to the shaking of the magnets hitting the rotor. The shaking of the magnets will easily cause the magnets to break and be damaged, resulting in increased maintenance costs for the motor. As customers' experience with air conditioners increases, the noise of the compressor will seriously affect their sleep quality, and there is a strong market demand for compressors with low noise and vibration.
[0003] Therefore, the prior art needs to be further developed. Utility Model Content
[0004] The purpose of the utility model is to overcome the above technical deficiencies and provide a rotor structure, a variable frequency motor and a compressor to solve the technical problem of high noise in the motor in the related art.
[0005] In order to achieve the above technical objectives, the utility model adopts the following technical solutions: a rotor structure is provided, including: a rotor core, the rotor core includes a magnet hole, and a rotor magnet is embedded in the magnet hole; a first rotor end plate and a second rotor end plate, the first rotor end plate and the second rotor end plate are respectively arranged at two ends of the rotor core; a stopper assembly, the stopper assembly is located on the side of the first rotor end plate close to the rotor core; the stopper assembly includes a limiting component, the limiting component includes an abutting portion abutting against the rotor magnet; the stopper assembly includes a buffer component spaced apart from the limiting component, the buffer component has a buffer surface protruding from the first rotor end plate, and the buffer surface abuts against the rotor core.
[0006] Furthermore, a height between the buffer surface and the first rotor end plate is H1, wherein 0.2 mm ≤ H1 ≤ 0.3 mm.
[0007] Furthermore, the buffer component includes: a first connecting part and a second connecting part; a third connecting part, a certain angle is set between the third connecting part and the first connecting part, and a certain angle is set between the third connecting part and the second connecting part, one end of the third connecting part extends toward the axial direction close to the first rotor end plate, and the other end of the third connecting part is connected to both the first connecting part and the second connecting part.
[0008] Furthermore, the first rotor end plate includes a rivet hole, the third connecting part is a symmetrical structure, the symmetry axis of the third connecting part passes through the axis of the first rotor end plate, and a line between the symmetry axis of the third connecting part and the axis of the first rotor end plate and a line between the axis of the rivet hole and the axis of the first rotor end plate are provided with a first preset angle D1, wherein 16.8°≤D1≤17.2°.
[0009] Furthermore, the buffer component is a cylindrical structure.
[0010] Further, one end of the buffer component extends toward the axial direction close to the first rotor end plate, and the other end of the buffer component extends toward the axial direction away from the first rotor end plate.
[0011] Furthermore, the limiting component includes a deformation portion, one end of the deformation portion is connected to the first rotor end plate, the other end of the deformation portion is connected to the abutting portion, a second preset angle D2 is set between the deformation portion and the abutting portion, wherein 138°≤D2≤142°; a third preset angle C is set between the deformation portion and the first rotor end plate, wherein 39°≤D3≤42°.
[0012] Furthermore, the thickness of the first rotor end plate is L1, wherein 0.4 mm ≤ L1 ≤ 0.6 mm; the height of the limiting component is L2, wherein 3 <L2 / L1≤7。
[0013] Furthermore, the thickness of the rotor core is L3, and the thickness of the rotor magnet is L4, wherein 0.9≤L4 / L3<0.92.
[0014] Furthermore, the rotor structure includes an oil baffle component, which is located on the side of the first rotor end plate away from the rotor core. The oil baffle component includes an oil baffle portion protruding from the first rotor end plate, and an oil baffle cavity for accommodating oil is formed inside the oil baffle portion, and the opening of the oil baffle cavity faces the rotor core.
[0015] Furthermore, the rotor core includes a plurality of oil holes, which are distributed in an array around the axis of the rotor core; the oil baffles include a plurality of oil baffles, which are distributed at intervals around the axis of the first rotor end plate, and the plurality of oil baffles are arranged in a one-to-one correspondence with the plurality of oil holes.
[0016] Furthermore, there are a number of rivet holes, which are distributed in an array around the axis of the first rotor end plate; there are a number of buffer components, which are arranged corresponding to the number of rivet holes; there are a number of rotor magnets, and there are a number of limiting components, which are arranged one-to-one corresponding to the number of rotor magnets.
[0017] A variable frequency motor comprises a rotor structure, and the rotor structure is the above-mentioned rotor structure.
[0018] A compressor comprises a variable frequency motor, and the variable frequency motor is the variable frequency motor mentioned above.
[0019] Beneficial effects:
[0020] 1. By setting a limiting component, when the rotor is assembled as a whole, the abutting portion of the limiting component abuts against the rotor magnet, thereby pressing the rotor magnet in the axial direction of the rotor, preventing the rotor magnet from shaking in the magnet hole and hitting the rotor core. By setting a buffer component, the buffer component abuts against the rotor core, and the buffer component presses the rotor core in the axial direction of the rotor, preventing the rotor core from shaking in the radial direction of the rotor, preventing the inner wall of the magnet hole from hitting the rotor magnet, and avoiding abnormal motor noise generated during the operation of the motor, thereby solving the technical problem of high noise in the motor in the related technology.
[0021] 2. The rotor structure in this embodiment is applied to the motor of the rotor compressor. By setting a stopper assembly, the abnormal sound caused by the shaking of the rotor magnet during the operation of the compressor is reduced or avoided, thereby avoiding abnormal vibration noise of the compressor. By setting an oil-blocking component, the oil-blocking effect can be achieved, thereby preventing frozen oil from entering the air-conditioning pipeline, reducing the oil content in the air-conditioning pipeline, and improving the performance of the air-conditioning. At the same time, the oil-blocking components in the rotor assembly are reduced, thereby reducing the manufacturing cost of the motor. The noise reduction and cost reduction effects are achieved through a simple structure, thereby ensuring the reliability and safety of the rotor component assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a structural schematic diagram of the rotor structure adopted in the embodiment of the utility model;
[0023] Figure 2 It is a structural schematic diagram of a rotor core of a rotor structure adopted in an embodiment of the utility model;
[0024] Figure 3 It is a partial cross-sectional view of the rotor core of the rotor structure adopted in the embodiment of the utility model;
[0025] Figure 4 It is a structural schematic diagram of a first rotor end plate of a rotor structure adopted in an embodiment of the utility model;
[0026] Figure 5 is a cross-sectional view of a first rotor end plate of a rotor structure adopted in an embodiment of the utility model;
[0027] Figure 6 yes Figure 5 A magnified view of point A in FIG.
[0028] Figure 7 It is a structural schematic diagram of a first embodiment of a first rotor end plate adopted in an embodiment of the utility model;
[0029] Figure 8 It is a structural schematic diagram of a second embodiment of the first rotor end plate adopted in the embodiment of the utility model;
[0030] Fig. 9 It is a structural schematic diagram of the third embodiment of the first rotor end plate adopted in the embodiment of the utility model.
[0031] The above drawings include the following reference numerals:
[0032] 1. rotor core; 11. magnet hole; 12. oil hole; 2. rotor magnet; 3. first rotor end plate; 31. rivet hole; 32. oil baffle component; 321. oil baffle portion; 322. oil baffle cavity; 323. opening; 4. second rotor end plate; 5. limiting component; 51. abutting portion; 52. deformation portion; 6. buffer component; 61. buffer surface; 621. first connecting portion; 622. second connecting portion; 623. third connecting portion. DETAILED DESCRIPTION
[0033] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.
[0034] According to an embodiment of the present utility model, a rotor structure is provided. Figures 1 to 9 ,include:
[0035] A rotor core 1, the rotor core 1 includes a magnet hole 11, in which a rotor magnet 2 is embedded; a first rotor end plate 3 and a second rotor end plate 4, the first rotor end plate 3 and the second rotor end plate 4 are respectively arranged at both ends of the rotor core 1; a stopper assembly, the stopper assembly is located on a side of the first rotor end plate 3 close to the rotor core 1; the stopper assembly includes a limiting component 5, the limiting component 5 includes an abutting portion 51 abutting against the rotor magnet 2; the stopper assembly includes a buffer component 6 spaced apart from the limiting component 5, the buffer component 6 has a buffer surface 61 protruding from the first rotor end plate 3, and the buffer surface 61 abuts against the rotor core 1.
[0036] Specifically, the rotor structure is riveted into a whole by riveting the first rotor end plate 3, the rotor core 1 and the second rotor end plate 4 together.
[0037] By setting the limiting component 5, when the rotor is assembled as a whole, the abutting portion 51 of the limiting component 5 abuts against the rotor magnet 2, thereby pressing the rotor magnet 2 in the axial direction of the rotor, preventing the rotor magnet 2 from shaking in the magnet hole 11 and hitting the rotor core 1. By setting the buffer component 6, the buffer component 6 abuts against the rotor core 1, and the buffer component 6 presses the rotor core 1 in the axial direction of the rotor, preventing the rotor core 1 from shaking in the radial direction of the rotor, preventing the inner wall of the magnet hole 11 from hitting the rotor magnet 2, and avoiding abnormal motor noise generated during the operation of the motor, thereby solving the technical problem of high noise in the motor in the related technology.
[0038] Furthermore, the rotor core 1 is formed by stacking pieces of silicon steel, and the rotor core has a certain elasticity. When the first rotor end plate 3 is not installed in place, there is a certain gap between the layers of silicon steel. By setting a buffer component 6 connected to the end surface of the rotor core 1, the rotor core 1 can be pressed to prevent the first rotor end plate 3 from being lifted up due to the elasticity and buffering problems of the rotor core 1. The buffer component 6 adopts the above design to avoid a slight gap between the limit component 5 and the rotor magnet 2 when riveting is completed due to the elasticity problem of the rotor core 1 and the insufficient elasticity of the limit component 5.
[0039] In the rotor structure of this embodiment, see Figure 5 The height between the buffer surface 61 and the first rotor end plate 3 is H1, wherein 0.2 mm ≤ H1 ≤ 0.3 mm.
[0040] In some embodiments, the limiting component 5 and the buffer component 6 are integrally formed with the first rotor end plate 3 by stamping. The height range of H1 can be optimized according to the first rotor end plate 3. Its height design must ensure the structural strength of the buffer component 6, and at the same time, it is necessary to ensure that the limiting component 5 and the rotor magnet 2 can abut.
[0041] In the rotor structure of this embodiment, see Figure 7 The buffer component 6 includes: a first connection portion 621 and a second connection portion 622; a third connection portion 623, a certain angle is set between the third connection portion 623 and the first connection portion 621, and a certain angle is set between the third connection portion 623 and the second connection portion 622, one end of the third connection portion 623 extends toward the axial direction close to the first rotor end plate 3, and the other end of the third connection portion 623 is connected to both the first connection portion 621 and the second connection portion 622.
[0042] In the first embodiment of the buffer component 6 , the buffer component 6 is in a “Y” shape to increase the contact area between the buffer component 6 and the first rotor end plate 3 .
[0043] In the rotor structure of this embodiment, see Figure 7The first rotor end plate 3 includes a rivet hole 31, the third connecting portion 623 is a symmetrical structure, the symmetry axis of the third connecting portion 623 passes through the axis of the first rotor end plate 3, and the line between the symmetry axis of the third connecting portion 623 and the axis of the first rotor end plate 3 and the line between the axis of the rivet hole 31 and the axis of the first rotor end plate 3 are set with a first preset angle D1, wherein 16.8°≤D1≤17.2°.
[0044] Specifically, a certain layout rule is maintained between the position of the buffer component 6 and the position of the limiting component 5, so that the structure on the first rotor end plate 3 can be concentrated. When the rotor is riveted as a whole, the deformation caused by the stress concentration around the rivet hole 31 will be absorbed by the buffer component 6 and the limiting component 5, avoiding the overall deformation of the first rotor end plate 3 and achieving an anti-deformation effect.
[0045] By setting the first preset angle and designing the position of the buffer component 6 according to the position of the rivet hole 31 , the deformation degree of the first rotor end plate 3 can be reduced as much as possible when the rotor is riveted while avoiding structures such as magnets.
[0046] In the rotor structure of the second embodiment, see Figure 8 , the buffer component 6 is a cylindrical structure.
[0047] In the rotor structure of the third embodiment, see Fig. 9 One end of the buffer component 6 extends toward the axial direction close to the first rotor end plate 3 , and the other end of the buffer component 6 extends toward the axial direction away from the first rotor end plate 3 .
[0048] Specifically, the buffer component 6 is an I-shaped structure.
[0049] Specifically, the buffer component 6 is directly pressed into a boss shape by a high-punch die, and its shape can be designed into various shapes and can also be optimized according to the structure of the first rotor end plate 3 .
[0050] In the rotor structure of this embodiment, see Figure 6 The limiting component 5 includes a deformation portion 52, one end of the deformation portion 52 is connected to the first rotor end plate 3, and the other end of the deformation portion 52 is connected to the abutting portion 51, and a second preset angle D2 is set between the deformation portion 52 and the abutting portion 51, wherein 138°≤D2≤142°; a third preset angle C is set between the deformation portion 52 and the first rotor end plate 3, wherein 39°≤D3≤42°.
[0051] Specifically, the limiting component 5 is elastic. When the abutting portion 51 abuts against the rotor magnet 2, the limiting component 5 can be deformed to keep squeezing the rotor magnet 2. The limiting component 5 adopts the above-mentioned angle design, which can improve the rigidity and elasticity of the limiting component 5, so that the limiting component 5 can more effectively fix the magnet.
[0052] In the rotor structure of this embodiment, see Figure 5 The thickness of the first rotor end plate 3 is L1, where 0.4 mm ≤ L1 ≤ 0.6 mm. The height of the limiting component 5 is L2, where 3 <L2 / L1≤7。
[0053] Specifically, the thickness of the first rotor end plate 3 ranges from 0.4 to 0.6 mm. Within this thickness range, the yield rate during the punching process can be guaranteed and deformation can be reduced, so as to improve the punching efficiency of the mold and reduce the manufacturing cost of the mold. At the same time, the thickness of the first rotor end plate 3 is reduced, which also reduces the manufacturing cost of the first rotor end plate 3.
[0054] In the rotor structure of this embodiment, see Figure 1 The thickness of the rotor core 1 is L3, and the thickness of the rotor magnet 2 is L4, wherein 0.9≤L4 / L3<0.92. Specifically, the thickness of the rotor magnet 2 is smaller than the thickness of the rotor core 1, ensuring that the limiting component 5 abuts against the rotor magnet 2.
[0055] In the rotor structure of this embodiment, see Figure 1 The rotor structure includes an oil baffle component 32, which is located on the side of the first rotor end plate 3 away from the rotor core 1. The oil baffle component 32 includes an oil baffle portion 321 protruding from the first rotor end plate 3, and an oil baffle cavity 322 for accommodating oil is formed inside the oil baffle portion 321, and an opening 323 of the oil baffle cavity 322 faces the rotor core 1; wherein, the height of the oil baffle portion 321 is H2, 1≤H2≤1.5mm.
[0056] Specifically, an oil hole 12 is provided on the rotor core 1. There is a refrigerant in the oil hole 12 for cooling and lubricating the rotor. By providing an oil baffle component 32, the gas-liquid mixture thrown out during the high-speed rotation of the rotor is thrown onto the oil baffle part 321, and then flows back into the oil hole 12 through the opening 323, thereby achieving an oil baffle effect and preventing the refrigerant from entering the interior of the air conditioner and causing blockage of the air conditioner pipeline and deterioration of the rotor lubrication effect.
[0057] Specifically, the oil retaining portion 321 is a cap-shaped structure formed by stamping.
[0058] Specifically, the oil retaining portion 321 has a certain height, which can prevent the thickness of the oil retaining portion 321 from becoming thinner during stamping by the stamping die, thereby reducing the fatigue resistance of the structure of the oil retaining portion 321 and causing it to be easily deformed.
[0059] In the rotor structure of this embodiment, see Figure 2The rotor core 1 includes a plurality of oil holes 12, and the oil holes 12 are arranged in an array around the axis of the rotor core 1; the oil baffles 321 include a plurality of oil baffles 321, which are arranged at intervals around the axis of the first rotor end plate 3, and the plurality of oil baffles 321 are arranged in a one-to-one correspondence with the plurality of oil holes 12.
[0060] Specifically, a plurality of oil baffles 321 form a circular ring structure, and the oil baffles 321 are spaced apart from each other. The gaps between the oil baffles 321 are used to discharge the gas in the gas-liquid mixture.
[0061] In the rotor structure of this embodiment, see Figure 4 The rivet holes 31 include a plurality of rivet holes 31, which are arranged in an array around the axis of the first rotor end plate 3; the buffer components 6 include a plurality of buffer components 6, which are arranged corresponding to the plurality of rivet holes 31; the rotor magnets 2 include a plurality of limiting components 5, which are arranged one-to-one corresponding to the plurality of rotor magnets 2.
[0062] By providing a plurality of limiting components 5 and a plurality of buffer components 6 , the fixing effect of the rotor core 1 and the rotor magnet 2 is enhanced.
[0063] Specifically, the structure of the limiting component 5 is set according to the rotor magnet 2 .
[0064] In this embodiment, there are two limiting components 5 , and the two limiting components 5 are symmetrically arranged with the buffer component 6 as the center.
[0065] In the variable frequency motor of this embodiment, the variable frequency motor includes a rotor structure, and the rotor structure is the above-mentioned rotor structure.
[0066] In the compressor of this embodiment, the compressor includes a variable frequency motor, and the variable frequency motor is the variable frequency motor mentioned above.
[0067] The rotor structure in this embodiment is applied to the motor of the rotor compressor. By setting a stopper assembly, the abnormal sound generated by the shaking of the rotor magnet 2 during the operation of the compressor is reduced or avoided, thereby avoiding abnormal vibration noise of the compressor. By setting the oil baffle component 32, the oil baffle effect can be achieved, thereby preventing frozen oil from entering the air-conditioning pipeline, reducing the oil content in the air-conditioning pipeline, and improving the performance of the air-conditioning. At the same time, the oil baffle components in the rotor assembly are reduced, reducing the manufacturing cost of the motor, and achieving the effect of reducing noise and cost through a simple structure, thereby ensuring the reliability and safety of the rotor component assembly.
[0068] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0069] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.
[0070] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.
[0071] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.
[0072] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.
Claims
1. A rotor structure, characterized in that: include: A rotor core (1), the rotor core (1) comprising a magnet hole (11), wherein a rotor magnet (2) is embedded in the magnet hole (11); A first rotor end plate (3) and a second rotor end plate (4), wherein the first rotor end plate (3) and the second rotor end plate (4) are respectively arranged at two ends of the rotor core (1); A stopper assembly, the stopper assembly being located on a side of the first rotor end plate (3) close to the rotor core (1); the stopper assembly comprising a limiting component (5), the limiting component (5) comprising an abutting portion (51) abutting against the rotor magnet (2); the stopper assembly comprising a buffer component (6) spaced apart from the limiting component (5), the buffer component (6) having a buffer surface (61) protruding from the first rotor end plate (3), the buffer surface (61) abutting against the rotor core (1).
2. The rotor structure according to claim 1, characterized in that: The height between the buffer surface (61) and the first rotor end plate (3) is H1, wherein 0.2 mm ≤ H1 ≤ 0.3 mm.
3. The rotor structure according to claim 1, characterized in that: The buffer component (6) comprises: A first connecting portion (621) and a second connecting portion (622); A third connection portion (623), a certain angle is set between the third connection portion (623) and the first connection portion (621), and a certain angle is set between the third connection portion (623) and the second connection portion (622), one end of the third connection portion (623) extends toward the axial direction close to the first rotor end plate (3), and the other end of the third connection portion (623) is connected to both the first connection portion (621) and the second connection portion (622).
4. The rotor structure according to claim 3, characterized in that: The first rotor end plate (3) comprises a rivet hole (31), the third connecting portion (623) is a symmetrical structure, the symmetry axis of the third connecting portion (623) passes through the axis of the first rotor end plate (3), and a line connecting the symmetry axis of the third connecting portion (623) and the axis of the first rotor end plate (3) and a line connecting the axis of the rivet hole (31) and the axis of the first rotor end plate (3) are provided with a first preset angle D1, wherein 16.8°≤D1≤17.2°.
5. The rotor structure according to claim 1, characterized in that: The buffer component (6) is a cylindrical structure.
6. The rotor structure according to claim 1, characterized in that: One end of the buffer component (6) extends toward an axial direction close to the first rotor end plate (3), and the other end of the buffer component (6) extends toward an axial direction away from the first rotor end plate (3).
7. The rotor structure according to claim 1, characterized in that: The limiting component (5) comprises a deformation portion (52), one end of the deformation portion (52) is connected to the first rotor end plate (3), the other end of the deformation portion (52) is connected to the abutment portion (51), and a second preset angle D2 is provided between the deformation portion (52) and the abutment portion (51), wherein 138°≤D2≤142°; A third preset angle C is provided between the deformation portion (52) and the first rotor end plate (3), wherein 39°≤D3≤42°.
8. The rotor structure according to claim 1, characterized in that: The thickness of the first rotor end plate (3) is L1, wherein 0.4 mm ≤ L1 ≤ 0.6 mm; The height of the limiting component (5) is L2, wherein 3 <L2 / L1≤7。 9. The rotor structure according to claim 1, characterized in that: The thickness of the rotor core (1) is L3, and the thickness of the rotor magnet (2) is L4, wherein 0.9≤L4 / L3<0.
92.
10. The rotor structure according to claim 1, characterized in that: The rotor structure comprises an oil baffle component (32), the oil baffle component (32) being located on a side of the first rotor end plate (3) away from the rotor core (1), the oil baffle component (32) comprising an oil baffle portion (321) protruding from the first rotor end plate (3), an oil baffle cavity (322) for accommodating oil being formed inside the oil baffle portion (321), and an opening (323) of the oil baffle cavity (322) facing the rotor core (1).
11. The rotor structure according to claim 10, characterized in that: The rotor core (1) comprises a plurality of oil holes (12), and the plurality of oil holes (12) are distributed in an array around the axis of the rotor core (1); The oil baffles (321) include a plurality of oil baffles (321), which are spaced apart and distributed around the axial circumference of the first rotor end plate (3), and the plurality of oil baffles (321) are arranged in one-to-one correspondence with the plurality of oil holes (12).
12. The rotor structure according to claim 4, characterized in that: The rivet holes (31) include a plurality of rivet holes (31), and the plurality of rivet holes (31) are distributed in an array around the axis of the first rotor end plate (3); The buffer components (6) include a plurality of buffer components (6), and the plurality of buffer components (6) are arranged corresponding to the plurality of rivet holes (31); The rotor magnets (2) include a plurality of them, the limiting components (5) include a plurality of them, and the plurality of the limiting components (5) are arranged in a one-to-one correspondence with the plurality of the rotor magnets (2).
13. A variable frequency motor, characterized in that: The variable frequency motor comprises a rotor structure, and the rotor structure is the rotor structure according to any one of claims 1 to 12.
14. A compressor, characterized in that: The compressor includes a variable frequency motor, and the variable frequency motor is the variable frequency motor according to claim 13.