CN215409211U

CN215409211U - Rotor subassembly, compressor

Info

Publication number: CN215409211U
Application number: CN202120616667.XU
Authority: CN
Inventors: 刘喜兴; 冯志良; 刘国良; 刘靖; 梁社兵; 于潇逍
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2022-01-04
Anticipated expiration: 2031-03-25

Abstract

The utility model provides a rotor assembly and a compressor. The rotor assembly includes a rotor core; keep off oil portion, keep off oil portion and rotor core's one end and be connected, keep off oil portion and be provided with the stator structure on rotor core's the surface, the stator structure sets up according to predetermineeing angle skew along keeping off oil portion radial direction, wherein, alpha is not less than 10 and is not less than 80, alpha is for predetermineeing the angle. Set up the stator structure on keeping away from rotor core's the surface of oil portion to with the stator structure according to the skew mode setting of predetermineeing the angle, can improve the stator of stator structure like this and lead oily efficiency, reduced the oil spitting rate of the compressor that has this rotor subassembly then, improved the reliability of compressor.

Description

Rotor subassembly, compressor

Technical Field

The utility model relates to the technical field of motor equipment, in particular to a rotor assembly and a compressor.

Background

Adopt side direction exhaust muffler structure, the compressor noise performance is more excellent, but the side is arranged the muffler and when realizing the low noise effect, the side direction exhaust directly blows the oil bath oil level that is located the compressor bottom, and the oil volume that takes of exhaust rises, leads to the compressor to tell the oil rate and risees. The oil-spitting rate is increased, so that the frozen oil enters the condenser and the evaporator, the heat exchange capacity of the air-conditioning system is reduced, the heat exchange condition is worsened, and the performance of the air-conditioning system is reduced.

With the development of air conditioning technology and the gradual enhancement of cost reduction requirements, the miniaturization and high-frequency formation of a compressor serving as an air conditioning core component are development trends of the rotor compressor industry. The miniaturization can reduce the diameter of the shell of the compressor, and the flow area of the motor is further reduced; the high frequency increases the discharge flow rate of the compressor, greatly improves the oil content of the air flow, and leads to the attenuation of the high-frequency operation capacity.

The prior art provides an oil separating structure, and a centrifugal separation type oil separating fan is arranged at an inlet of an exhaust pipe, when a compressor runs, lubricating oil is thrown out under the action of the centrifugal separation type oil separating fan, and the lubricating oil separated from a refrigerant is beaten on an upper shell cover for sedimentation separation, so that the lubricating Oil Circulation Rate (OCR) is reduced. From the practical application effect: the oil distribution fan can seriously occupy the circulation area of the exhaust pipe due to installation, and the exhaust smoothness of the compressor is influenced, so that the performance of the compressor is further improved. The addition of a set of moving parts can reduce the reliability of the compressor, and when the oil distribution fan runs abnormally, the oil distribution effect is lost, and the exhaust is seriously hindered.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a rotor assembly and a compressor, and aims to solve the problem that the oil discharge rate of the compressor in the prior art is high.

In order to achieve the above object, according to one aspect of the present invention, there is provided a rotor assembly including: a rotor core; keep off oil portion, keep off oil portion and rotor core's one end and be connected, keep off oil portion and be provided with the stator structure on rotor core's the surface, the stator structure sets up according to predetermineeing angle skew along keeping off oil portion radial direction, wherein, alpha is not less than 10 and is not less than 80, alpha is for predetermineeing the angle.

Further, the middle part of keeping off oil portion is provided with the installation through-hole, and the first end of stator structure is close to the installation through-hole setting, and the second end of stator structure outwards keeps away from the installation through-hole setting along the radial direction of keeping off oil portion, and the geometric centre line of stator structure along the radial direction of keeping off oil portion and one of them geometric centre line of the radial direction of keeping off oil portion form and predetermine the angle.

Further, the stator structure is a plurality of, and a plurality of stator structures set up along the circumference interval of installation through-hole.

Further, the area of the cross section from the first end of the guide vane structure to the second end of the guide vane structure is gradually reduced and then gradually increased.

Further, the area of the cross section of the first end of the guide vane structure to the second end of the guide vane structure is arranged to be gradually reduced.

Further, the guide vane structure is of an arc surface structure towards one side of the installation through hole, and the arc surface structure is convexly arranged towards one side of the installation through hole or concavely arranged away from one side of the installation through hole.

Furthermore, the geometric center line of the guide vane structure in the length direction is a straight line along the radial direction of the oil blocking part.

Further, the area of the cross section from the first end of the guide vane structure to the second end of the guide vane structure is equally arranged, or the area of the cross section from the first end of the guide vane structure to the second end of the guide vane structure is gradually reduced and then gradually increased, and then gradually reduced.

Further, the area of the cross section of the middle part of the guide vane structure is larger than the area of the cross sections of the two ends of the guide vane structure, wherein the area of the cross section of the first end of the guide vane structure is equal to the area of the cross section of the second end of the guide vane structure.

Further, the cross section of the guide vane structure is rectangular, and/or the cross section of at least one guide vane structure is elliptical.

Furthermore, the oil blocking part is also provided with a plurality of first boss structures, the plurality of first boss structures are arranged at intervals along the circumferential direction of the mounting through hole, and the first boss structures and the guide vane structures are located on the same surface of the oil blocking part.

Further, the guide vane structure is a plurality of, and a plurality of first boss structures and a plurality of guide vane structure set up alternately, have between adjacent first boss structure and the guide vane structure apart from setting up.

Further, a plurality of first boss structures and a plurality of stator structures set up with a one-to-one, and first boss structure is located the outside of the stator structure that corresponds the setting, and corresponds the first boss structure that sets up and stator structure integrated into one piece setting.

Further, in the axial direction of the rotor core, a height of at least one of the plurality of first boss structures is set differently from heights of the remaining first boss structures.

Further, the oil blocking part is of an annular plate-shaped structure, or the oil blocking part is of an annular plate-shaped structure, and an annular flange is arranged on the outer edge of the annular plate-shaped structure.

Furthermore, at least one first boss structure is provided with a first mounting hole.

Further, the rotor assembly further comprises: the support ring is connected with the rotor core and is positioned on the outer side of the oil blocking part; and the auxiliary balance configuration block is connected with the rotor core and is positioned outside the support ring.

According to another aspect of the present invention, there is provided a compressor, comprising a rotor assembly as described above.

By applying the technical scheme of the utility model, the guide vane structure is arranged on the surface of the oil blocking part far away from the rotor iron core and is arranged in an offset mode of a preset angle, so that the guide vane oil guiding efficiency of the guide vane structure can be improved, the oil spitting rate of a compressor with the rotor assembly is reduced, and the reliability of the compressor is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 shows a schematic structural view of a first embodiment of a rotor assembly according to the present invention;

FIG. 2 shows a schematic structural view of a second embodiment of a rotor assembly according to the present invention;

fig. 3 shows a schematic structural view of a third embodiment of a rotor assembly according to the present invention;

fig. 4 shows a schematic structural view of a first embodiment of an oil deflector according to the present invention;

fig. 5 shows a schematic structural view of a second embodiment of an oil deflector according to the present invention;

FIG. 6 shows a schematic structural view of an embodiment of a support ring and a secondary balancing configuration block according to the present invention;

FIG. 7 shows a schematic structural view of a first embodiment of a guide vane structure according to the utility model;

FIG. 8 shows a structural schematic view of a second embodiment of a guide vane structure according to the utility model;

FIG. 9 shows a schematic structural view of a third embodiment of a guide vane structure according to the utility model;

FIG. 10 shows a schematic structural view of a fourth embodiment of a guide vane structure according to the utility model;

FIG. 11 shows a schematic structural view of a fifth embodiment of a guide vane structure according to the utility model;

FIG. 12 shows a schematic structural view of a sixth embodiment of a guide vane structure according to the utility model;

FIG. 13 shows a schematic structural view of a seventh embodiment of a guide vane structure according to the utility model;

fig. 14 shows a structural schematic view of an eighth embodiment of a guide vane structure according to the utility model.

Wherein the figures include the following reference numerals:

1. a primary counterbalance; 2. a lower baffle plate;

3. a rotor core;

4. a support ring; 41. a secondary balance configuration block;

5. an oil retaining portion; 51. a guide vane structure; 52. mounting a through hole; 53. a first boss structure; 531. a first mounting hole;

54. and (5) annular flanging.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1 through 14, according to a specific embodiment of the present application, a rotor assembly is provided.

Specifically, the rotor assembly includes a rotor core 3 and an oil blocking portion 5. Keep off oil portion 5 and be connected with rotor core 3's one end, keep off being provided with stator structure 51 on the surface of rotor core 3 of keeping away from of oil portion 5, stator structure 51 sets up according to predetermineeing angle skew along 5 radial directions in oil portion, wherein, alpha is not less than 10 and is not less than 80, alpha is for predetermineeing the angle.

In this embodiment, set up stator structure on keeping away from rotor core's the surface of fender oil portion to set up stator structure according to the skew mode of predetermineeing the angle, can improve stator structure's stator like this and lead oily efficiency, reduced the oil rate of spouting of the compressor that has this rotor subassembly then, improved the reliability of compressor.

Wherein, the middle part of the oil blocking part 5 is provided with a mounting through hole 52. The first end of the guide vane structure 51 is disposed close to the mounting through hole 52, the second end of the guide vane structure 51 is disposed away from the mounting through hole 52 along the radial direction of the oil blocking portion 5, as shown in a in fig. 7, and a geometric center line of the guide vane structure 51 along the radial direction of the oil blocking portion 5 and one of the geometric center lines of the radial direction of the oil blocking portion 5 form a preset angle. The oil guide efficiency of the guide vane structure can be improved by the arrangement, and then the oil-gas separation efficiency of the compressor to the refrigerant is improved.

In order to further improve the oil guiding efficiency of the compressor, the guide vane structure 51 is provided in plurality, and the plurality of guide vane structures 51 are arranged at intervals along the circumferential direction of the mounting through hole 52. As shown in fig. 7 to 14, each guide vane structure 51 is disposed offset by a predetermined angle in the counterclockwise direction. Alternatively, the guide vane structures 51 are arranged offset by a predetermined angle in the clockwise direction.

In the present application, the area of the cross section from the first end of the guide vane structure 51 to the second end of the guide vane structure 51 may be gradually decreased and then gradually increased. It is also possible to provide the cross-sectional area of the first end of the guide vane structure 51 to the second end of the guide vane structure 51 in a gradually decreasing manner. This arrangement can improve the refrigerant flow guiding effect of the guide vane structure 51.

Further, the side of the guide vane structure 51 facing the mounting through hole 52 is an arc structure, and the arc structure is convexly arranged facing the mounting through hole 52. Alternatively, the arcuate structures are concavely disposed away from the side of the mounting through-hole 52. As shown in fig. 10 to 11, the geometric center line of the guide vane structure 51 in the longitudinal direction is a straight line along the radial direction of the oil baffle 5. This arrangement can improve the refrigerant flow guiding effect of the guide vane structure 51.

In another embodiment of the present application, the area of the cross section of the first end of the guide vane structure 51 to the second end of the guide vane structure 51 is equally arranged. The cross-sectional area from the first end of the guide vane structure 51 to the second end of the guide vane structure 51 is gradually decreased, then gradually increased, and then gradually decreased. The arrangement can also improve the flow guiding effect of the guide vane structure 51 on the refrigerant.

In the present application, the area of the cross section of the middle portion of the guide vane structure 51 may also be set to be larger than the area of the cross section of the two ends of the guide vane structure 51, wherein the area of the cross section of the first end of the guide vane structure 51 is set equal to the area of the cross section of the second end of the guide vane structure 51.

As shown in fig. 9, the guide vane structure 51 has a rectangular cross section. The cross-section of at least one guide vane structure 51 is elliptical. As shown in fig. 8, the cross-section of each of the three vane structures 51 is elliptical.

As shown in fig. 5, the oil blocking portion 5 is further provided with a plurality of first boss structures 53, the plurality of first boss structures 53 are arranged at intervals along the circumferential direction of the mounting through hole 52, and the first boss structures 53 and the guide vane structures 51 are located on the same surface of the oil blocking portion 5. The guide vane structures 51 are multiple, the multiple first boss structures 53 and the multiple guide vane structures 51 are alternately arranged, and a distance is reserved between the adjacent first boss structures 53 and the guide vane structures 51. At least one first boss structure 53 defines a first mounting hole 531. This arrangement can improve the stability of the rotor assembly.

As shown in fig. 14, the plurality of first boss structures 53 are disposed in one-to-one correspondence with the plurality of guide vane structures 51, the first boss structures 53 are located at the outer sides of the guide vane structures 51 disposed correspondingly, and the first boss structures 53 disposed correspondingly and the guide vane structures 51 are integrally formed. This arrangement can improve the connection strength of the first boss structure 53, and improve the reliability of the rotor assembly.

Wherein the height of at least one of the plurality of first boss structures 53 is set differently from the height of the remaining first boss structures 53 in the axial direction of the rotor core 3.

The oil baffle 5 is of an annular plate-shaped structure. Alternatively, the oil blocking portion 5 is an annular plate-shaped structure, and an annular flange 54 is provided on an outer edge of the annular plate-shaped structure. The arrangement makes the structure of the oil baffle part 5 simple and reliable.

To further improve the reliability of the rotor assembly, the rotor assembly further comprises a support ring 4. The support ring 4 is connected with the rotor core 3, and the support ring 4 is positioned on the outer side of the oil blocking part 5; and a sub balance configuration block 41, wherein the sub balance configuration block 41 is connected with the rotor core 3 and positioned outside the support ring 4.

The rotor assembly in the above embodiments may also be used in the technical field of compressor equipment, that is, according to another aspect of the present invention, there is provided a compressor, including the rotor assembly in the above embodiments.

Specifically, the rotor subassembly includes main balancing piece 1, lower baffle 2, rotor core 3, a plurality of magnet steel, keeps off oily portion, vice balancing piece. The oil blocking part is provided with a flanging structure and a bottom plate which are distributed on the outer side, one or more guide vane structures are arranged on the upper surface of the bottom plate, the guide vane structures are close to the rotor circulation holes and are arranged on the outer side of the circulation holes, the number of the guide vane structures is equal to that of the rotor circulation holes, or the number of the guide vane structures is less than that of the rotor circulation holes.

By adopting the rotor assembly, when the motor rotates, a low-pressure area can be formed above the rotor circulation hole due to the existence of the guide vane structure, so that the pressure of the inlet and the outlet of the rotor circulation hole is reduced, and the fluid can flow out of the circulation hole conveniently, so that the flow of the rotor circulation hole is improved; the fluid flows into the space between the oil blocking component and the oil blocking seat through the vertical through circulation channel of the rotor iron core, flows out through the side gap between the oil blocking component and the oil blocking seat, and the oil blocking seat and the oil blocking component provide centrifugal force for the fluid flowing through the gap between the oil blocking seat and the oil blocking seat, so that the oil-gas separation capacity is improved, and the oil carrying capacity of the compressor exhaust is reduced.

Under the same calculation condition, the flow ratio of each flow channel of the motor is shown in the following table, wherein a positive value indicates that the statistical flow is upward, and a negative value indicates that the statistical flow is downward. After adopting this application structure, the rotor flow hole upward flow increases by a wide margin, and the sum of stator side cut and solenoid clearance backward flow increases by a wide margin, and this kind of flow mode more is favorable to reducing the compressor and exhausts oil mass, explains to adopt this patent the structure more is favorable to reducing the compressor and tells oily rate.

TABLE 1 comparison of simulation results

Different boss scheme	Scheme	1	Scheme 2	Scheme 3	Scheme 4
						Rotor flow channel flow ratio	127.50％	139.01％	109.62％	196.99％
Stator flow channel flow ratio	-27.5％	-39.01％	-9.62％	-96.99％

Wherein, in table 1, in order to verify the effect of this application, designed four kinds of fender oil seat schemes altogether, the scheme details are as follows:

scheme 1: the upper surface of the oil baffle seat is provided with 3 uniformly distributed cylindrical bosses;

scheme 2: the upper surface of the oil baffle seat is provided with 6 uniformly distributed cylindrical bosses;

scheme 3: the upper surface of the oil baffle seat is provided with 3 uniformly distributed cylindrical bosses and 3 uniformly distributed guide vane structures opposite to the rotation direction of the compressor;

scheme 4: the oil baffle seat upper surface has 3 cylinder bosss of equipartition to reach 3 stator structures the same with compressor direction of rotation of equipartition.

Table 2 shows the test results of the oil baffle seat using three cylindrical bosses and the oil baffle seat embodiment of the present application, with the data of the prototype of the oil baffle seat using three cylindrical bosses as the reference, the data represents the fluctuation range of the relative reference value. From table 2, the capacity of each working condition point is improved, the power consumption is reduced, the comprehensive COP is improved by at least 0.79% and at most 3.42%, the oil spitting rate is generally reduced by more than 50%, and the scheme effect is obvious.

TABLE 2 comparison of test results

	Capability of	Power consumption	COP	OCR
					Working condition
1	1.86％	-0.19％	2.06％	-56.57％
					Working condition
2	1.95％	-0.50％	2.46％	-53.77％
					Working condition
3	0.24％	-0.54％	0.79％	-58.46％
					Working condition
4	2.02％	-1.35％	3.42％	-53.44％

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the utility model to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotor assembly, comprising:

a rotor core (3);

keep off oil portion (5), keep off oil portion (5) with the one end of rotor core (3) is connected, keep off keeping away from of oil portion (5) rotor core (3) be provided with stator structure (51) on the surface, stator structure (51) are followed keep off oil portion (5) radial direction and set up according to presetting the angle skew, wherein, 10 ≦ alpha ≦ 80, alpha does preset the angle.

2. The rotor assembly according to claim 1, wherein a mounting through hole (52) is provided in a middle portion of the oil blocking portion (5), a first end of the guide vane structure (51) is disposed near the mounting through hole (52), a second end of the guide vane structure (51) is disposed away from the mounting through hole (52) outward in a radial direction of the oil blocking portion (5), and a geometric center line of the guide vane structure (51) in the radial direction of the oil blocking portion (5) and one of geometric center lines of the radial direction of the oil blocking portion (5) form the preset angle.

3. The rotor assembly according to claim 2, wherein the guide vane structure (51) is plural, the plural guide vane structures (51) being provided at intervals along a circumferential direction of the mounting through hole (52).

4. The rotor assembly of claim 1, wherein the cross-sectional area of the first end of the vane structure (51) to the second end of the vane structure (51) is gradually decreasing and then gradually increasing.

5. The rotor assembly according to claim 1, wherein a cross-sectional area of a first end of the guide vane structure (51) to a second end of the guide vane structure (51) is arranged gradually decreasing.

6. The rotor assembly according to claim 2, wherein a side of the guide vane structure (51) facing the mounting through hole (52) is an arc structure, the arc structure is convexly disposed towards a side of the mounting through hole (52), or the arc structure is concavely disposed away from a side of the mounting through hole (52).

7. The rotor assembly according to any one of claims 1 to 6, wherein a geometric centerline of the guide vane structure (51) in a length direction is a straight line in a radial direction of the oil dam (5).

8. The rotor assembly of claim 1, wherein the cross-sectional area of the first end of the vane structure (51) to the second end of the vane structure (51) is equally arranged, or the cross-sectional area of the first end of the vane structure (51) to the second end of the vane structure (51) is gradually reduced, then gradually increased, and then gradually reduced.

9. The rotor assembly according to claim 1, wherein the area of the cross-section of the middle portion of the guide vane structure (51) is larger than the area of the cross-section of the two ends of the guide vane structure (51), wherein the area of the cross-section of the first end of the guide vane structure (51) is arranged equal to the area of the cross-section of the second end of the guide vane structure (51).

10. The rotor assembly according to claim 1, wherein the guide vane structures (51) are rectangular in cross-section and/or at least one of the guide vane structures (51) is elliptical in cross-section.

11. The rotor assembly according to claim 2, wherein the oil blocking portion (5) is further provided with a plurality of first boss structures (53), the plurality of first boss structures (53) are arranged at intervals along the circumferential direction of the mounting through hole (52), and the first boss structures (53) and the guide vane structures (51) are located on the same surface of the oil blocking portion (5).

12. The rotor assembly according to claim 11, wherein the guide vane structure (51) is plural, a plurality of the first boss structures (53) are alternately arranged with a plurality of the guide vane structures (51), and adjacent first boss structures (53) are arranged with a distance from the guide vane structure (51).

13. The rotor assembly according to claim 11, wherein a plurality of the first boss structures (53) are arranged in one-to-one correspondence with a plurality of the guide vane structures (51), the first boss structures (53) are located at the outer sides of the guide vane structures (51) which are arranged correspondingly, and the first boss structures (53) which are arranged correspondingly are integrally formed with the guide vane structures (51).

14. The rotor assembly according to claim 12, wherein a height of at least one of the first boss structures (53) is set differently from a height of the remaining first boss structures (53) in an axial direction of the rotor core (3).

15. The rotor assembly according to claim 11, wherein the oil deflector (5) is of annular plate-like construction, or wherein the oil deflector (5) is of annular plate-like construction, the outer edge of which is provided with an annular bead (54).

16. The rotor assembly of claim 11, wherein at least one of the first boss structures (53) defines a first mounting hole (531).

17. The rotor assembly of claim 1, further comprising:

the support ring (4), the support ring (4) is connected with the rotor core (3), and the support ring (4) is positioned on the outer side of the oil blocking part (5);

and the auxiliary balance configuration block (41), wherein the auxiliary balance configuration block (41) is connected with the rotor core (3) and is positioned outside the support ring (4).

18. A compressor comprising a rotor assembly, wherein the rotor assembly is as claimed in any one of claims 1 to 17.