A rotor assembly, electric machine and compressor
By setting a support on the outer periphery of the rivet, the oil baffle is separated from the rotor core, which solves the problem of increased manufacturing difficulty and cost due to the integral molding of the oil baffle, and achieves the effect of reducing processing difficulty and production cost.
Patent Information
- Application Number
- CN202521557135.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-23
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-23
AI Technical Summary
In the existing technology, the support part, which is integrally formed with the oil baffle and the rotor, increases the difficulty of manufacturing process and defect rate, resulting in higher production costs.
By setting a support on the outer periphery of the rivet, the oil baffle is separated from the rotor core. The longer part of the rivet passes through the rotor core, and the oil baffle is fixed on the end face of the support away from the rotor core. Only a through hole needs to be drilled through the oil baffle to avoid the need for a one-piece molded support structure.
The processing difficulty and defect rate of the oil baffle were reduced, the thickness of the oil baffle was reduced, and the production cost was lowered.
Smart Images
Figure CN224683955U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of compressor technology, and in particular to a rotor assembly, a motor and a compressor. Background Technology
[0002] A compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas. It primarily draws in low-temperature, low-pressure refrigerant gas through the suction pipe, compresses it using a piston driven by a motor, and then discharges high-temperature, high-pressure refrigerant gas through the exhaust pipe, providing power for the refrigeration cycle. The motor consists of a stator and a rotor. To improve the compressor's high-frequency capability, an oil baffle is typically installed on the rotor's end face to improve oil discharge, thereby enhancing the compressor's high-frequency performance. Since the oil baffle cannot be directly placed on the rotor's end face, several support parts are usually provided on the oil baffle's end face relative to the rotor. These support parts are then placed on the rotor's end face to separate the oil baffle from the rotor. These support parts and the oil baffle need to be integrally cast, with channels for rivets to pass through them. This method not only increases the difficulty of the manufacturing process, potentially leading to a higher product defect rate, but also requires a thicker oil baffle, increasing production costs. Utility Model Content
[0003] Based on this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a rotor assembly, motor and compressor that can effectively reduce the processing difficulty and defect rate of the oil baffle while ensuring the oil baffle's oil-blocking function, and can correspondingly reduce the thickness of the oil baffle to reduce production costs.
[0004] To achieve the above objectives, a first aspect of this utility model provides a rotor assembly, including a rotor core, a rivet, and an oil baffle plate. The rotor core has a flow hole extending through it along its axial direction. A support portion is provided on the outer periphery of the rivet. The rivet extends through the rotor core along its axial direction, and one end of the support portion abuts against the end face of the rotor core. The oil baffle plate is fixedly disposed on the end face of the support portion away from the rotor core, and the projection of the oil baffle plate in the axial direction of the rotor core completely covers the flow hole.
[0005] Therefore, in the rotor assembly according to this utility model embodiment, a support portion is provided on the outer periphery of the rivet. This support portion divides the rivet into a longer end and a shorter end. The longer end of the rivet is used to pass through the rotor core, and the end of the support portion near the longer part of the rivet abuts against the rotor core. The oil baffle is passed through the shorter end of the rivet and is fixedly disposed on the end face of the support portion away from the rotor core. In this way, only a through hole is opened in the oil baffle to pass through the shorter end of the rivet, eliminating the need for an integrally formed support structure on the oil baffle. This effectively reduces the manufacturing difficulty of the oil baffle, and the thickness of the oil baffle can be correspondingly reduced. In other words, the rotor assembly according to this utility model embodiment can effectively reduce the processing difficulty and defect rate of the oil baffle, and can correspondingly reduce the thickness of the oil baffle, thereby reducing production costs.
[0006] In one embodiment, an end plate is provided on the end face of the rotor core, the rivet passes through the end plate and the rotor core, and one end of the support abuts against the end plate.
[0007] In one embodiment, a plurality of rivets are threaded through the rotor core, and a support portion is provided on the outer periphery of each rivet. The oil baffle is fixedly disposed on the support portion of the plurality of rivets.
[0008] In one embodiment, a plurality of the rivets are distributed at circumferential intervals along the rotor core.
[0009] In one implementation, a flow channel is formed between two adjacent support portions.
[0010] In one embodiment, the support portion is one of a cylindrical shape, a square block, or an arc-shaped block.
[0011] In one embodiment, a first through hole is provided through the middle of the rotor core along its axial direction, the oil baffle is an annular structure, and a second through hole is provided through the middle of the oil baffle. The first through hole and the second through hole are coaxially arranged, and the inner diameter of the first through hole is equal to the inner diameter of the second through hole.
[0012] In one embodiment, the outer diameter of the support is D, and the outer diameter of the rivet is d, satisfying the relationship: D≥2d.
[0013] A second aspect of this utility model provides an electric motor comprising the rotor assembly described in any of the preceding embodiments. The electric motor according to this utility model embodiment, while ensuring the oil-blocking function of the oil baffle, can effectively reduce the processing difficulty and defect rate of the oil baffle, and can correspondingly reduce the thickness of the oil baffle, thereby lowering production costs.
[0014] A third aspect of this utility model provides a compressor that includes the motor described in any of the preceding embodiments. The compressor according to this utility model, while ensuring the oil-blocking function of the oil baffle, can effectively reduce the processing difficulty and defect rate of the oil baffle, and can correspondingly reduce the thickness of the oil baffle, thereby lowering production costs.
[0015] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description
[0016] Figure 1 This is one of the structural schematic diagrams of the rotor assembly according to an embodiment of the present utility model;
[0017] Figure 2 This is a second schematic diagram of the rotor assembly according to an embodiment of the present utility model;
[0018] Figure 3 This is the third schematic diagram of the rotor assembly according to an embodiment of the present utility model;
[0019] Figure 4 This is an exploded view of the rotor assembly according to an embodiment of the present utility model;
[0020] Figure 5 This is one of the structural schematic diagrams of the rivet according to an embodiment of the present utility model;
[0021] Figure 6 This is the second structural schematic diagram of the rivet according to an embodiment of the present utility model.
[0022] Explanation of reference numerals in the attached figures:
[0023] 10. Rotor core; 11. First through hole; 12. Flow hole; 13. End plate; 20. Rivet; 21. Support part; 30. Oil baffle plate; 31. Second through hole. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0025] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.
[0026] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0027] In related technologies, a compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas. It primarily draws in low-temperature, low-pressure refrigerant gas through the suction pipe, compresses it using a piston driven by a motor, and then discharges high-temperature, high-pressure refrigerant gas through the exhaust pipe, providing power for the refrigeration cycle. The motor consists of a stator and a rotor. To improve the compressor's high-frequency capability, an oil baffle is typically installed on the rotor's end face to improve oil discharge, thereby enhancing the compressor's high-frequency performance. Since the oil baffle cannot be directly placed on the rotor's end face, several support parts are typically provided on the oil baffle's end face relative to the rotor. These support parts, placed on the rotor's end face, separate the oil baffle from the rotor. These support parts and the oil baffle need to be integrally cast, with channels for rivets to pass through them. This method not only increases the difficulty of the manufacturing process, potentially leading to a higher product defect rate, but also requires a thicker oil baffle, increasing production costs.
[0028] Therefore, this utility model embodiment provides a rotor assembly, a motor, and a compressor. According to this utility model embodiment, the rotor assembly, motor, and compressor, while ensuring the oil-blocking function of the oil baffle 30, can effectively reduce the processing difficulty and defect rate of the oil baffle 30, and can correspondingly reduce the thickness of the oil baffle 30, thereby lowering production costs.
[0029] Please see Figures 1 to 6The first aspect of this utility model provides a rotor assembly, including a rotor core 10, a rivet 20, and an oil baffle 30. The rotor core 10 has a flow hole 12 extending through it along its axial direction. A support portion 21 is provided on the outer periphery of the rivet 20. The rivet 20 extends through the rotor core 10 along its axial direction, and one end of the support portion 21 abuts against the end face of the rotor core 10. The oil baffle 30 is fixedly disposed on the end face of the support portion 21 away from the rotor core 10, and the projection of the oil baffle 30 in the axial direction of the rotor core 10 completely covers the flow hole 12.
[0030] In this embodiment of the utility model, a first through hole 11 is provided through the middle of the rotor core 10 along its axial direction, the oil baffle 30 has a circular structure, and a second through hole 31 is provided through the middle of the oil baffle 30. The first through hole 11 and the second through hole 31 are coaxially arranged, and the inner diameter of the first through hole 11 is equal to the inner diameter of the second through hole 31.
[0031] Therefore, in the rotor assembly according to this embodiment of the present invention, a support portion 21 is provided on the outer periphery of the rivet 20. This support portion 21 divides the rivet 20 into a longer end and a shorter end. The longer end of the rivet 20 is used to pass through the rotor core 10, and the end of the support portion 21 near the longer portion of the rivet 20 abuts against the rotor core 10. The oil baffle 30 passes through the shorter end of the rivet 20 and is fixedly disposed on the end face of the support portion 21 away from the rotor core 10. In this way, only a through hole is needed to pass through the shorter end of the rivet 20 in the oil baffle 30, eliminating the need for an integrally formed support structure on the oil baffle 30. This effectively reduces the manufacturing difficulty of the oil baffle 30, and the thickness of the oil baffle 30 can be correspondingly reduced. In other words, the rotor assembly according to this embodiment of the present invention can effectively reduce the processing difficulty and defect rate of the oil baffle 30, and the thickness of the oil baffle 30 can be correspondingly reduced, thereby reducing production costs.
[0032] Optionally, in some embodiments of this utility model, an end plate 13 is provided on the end face of the rotor core 10, a rivet 20 passes through the end plate 13 and the rotor core 10, and one end of the support portion 21 abuts against the end plate 13. In these embodiments, the end plate 13 has a notch of a corresponding size at the position of the flow hole 12 of the rotor core 10, so as to avoid the end plate 13 blocking the flow hole 12 and preventing the refrigerant from being unable to pass through due to blockage of the flow hole 12.
[0033] Optionally, in some embodiments of this utility model, a plurality of rivets 20 are provided on the rotor core 10, and a support portion 21 is provided on the outer periphery of each rivet 20. The oil baffle 30 is fixedly disposed on the support portion 21 of the plurality of rivets 20. In these embodiments, the plurality of rivets 20 are distributed at intervals along the circumference of the rotor core 10, and a guide channel is formed between two adjacent support portions 21.
[0034] Optionally, in some embodiments of this utility model, the support portion 21 is one of a cylindrical shape, a square block, or an arc-shaped block. It can be understood that the shape of the support portion 21 can be designed as a cylindrical shape, a square block, an arc-shaped block, etc., according to actual needs, and is not limited to any of the shapes exemplified above.
[0035] Optionally, in some embodiments of this utility model, the outer diameter of the support 21 is D, and the outer diameter of the rivet 20 is d, satisfying the relationship: D≥2d.
[0036] The following is combined Figures 1 to 6 The following is a detailed description of a specific embodiment of the rotor assembly according to the present invention. It is worth understanding that the following is merely an illustrative description and should not be construed as limiting the present invention.
[0037] This embodiment provides a rotor assembly, including a rotor core 10, rivets 20, and an oil baffle 30. The rotor core 10 has a flow hole 12 extending through it along its axial direction. A support portion 21 is provided on the outer periphery of the rivet 20. The rivet 20 extends through the rotor core 10 along its axial direction, and one end of the support portion 21 abuts against the end face of the rotor core 10. The oil baffle 30 is fixedly disposed on the end face of the support portion 21 away from the rotor core 10, and the projection of the oil baffle 30 in the axial direction of the rotor core 10 completely covers the flow hole 12.
[0038] In this embodiment, a first through hole 11 is axially formed in the middle of the rotor core 10. The oil baffle 30 has an annular structure, and a second through hole 31 is axially formed in the middle of the oil baffle 30. The first through hole 11 and the second through hole 31 are coaxially arranged, and the inner diameter of the first through hole 11 is equal to the inner diameter of the second through hole 31. In addition, a plurality of flow holes 12 are distributed circumferentially on the rotor core 10 in this embodiment. These flow holes 12 allow refrigerant to pass through. Since the oil baffle 30 in this embodiment is spaced apart from the rotor core 10 by the support part 21, and the axial projection of the oil baffle 30 completely covers these flow holes 12, when the refrigerant gas passes through the flow holes 12, it can directly impact the oil baffle 30 and then be discharged radially outward.
[0039] Furthermore, in this embodiment, six rivets 20 are spaced apart along the circumference of the rotor core 10. Each rivet 20 has a support portion 21 on its outer periphery, and a flow guiding channel is formed between two adjacent support portions 21. The oil baffle 30 is fixedly mounted on the support portions 21 of the six rivets 20. In addition, the support portion in this embodiment has a cylindrical structure, the outer diameter of the support portion 21 is D, and the outer diameter of the rivet 20 is d, where D = 2d.
[0040] Therefore, in the rotor assembly according to this embodiment, a support portion 21 is provided on the outer periphery of the rivet 20. This support portion 21 divides the rivet 20 into a longer end and a shorter end. The longer end of the rivet 20 is used to pass through the rotor core 10, and the end of the support portion 21 near the longer portion of the rivet 20 abuts against the rotor core 10. The oil baffle 30 passes through the shorter end of the rivet 20 and is fixedly disposed on the end face of the support portion 21 away from the rotor core 10. In this way, only a through hole is needed to pass through the shorter end of the rivet 20 in the oil baffle 30, eliminating the need for an integrally formed support structure on the oil baffle 30. This effectively reduces the manufacturing difficulty of the oil baffle 30, and the thickness of the oil baffle 30 can be correspondingly reduced. In other words, the rotor assembly according to this embodiment can effectively reduce the processing difficulty and defect rate of the oil baffle 30, and the thickness of the oil baffle 30 can be correspondingly reduced, thereby reducing production costs.
[0041] A second aspect of this utility model provides an electric motor, which includes the rotor assembly of any of the above-mentioned embodiments. According to this utility model embodiment, the electric motor, while ensuring the oil-blocking function of the oil baffle 30, can effectively reduce the processing difficulty and defect rate of the oil baffle 30, and can correspondingly reduce the thickness of the oil baffle 30, thereby reducing production costs.
[0042] A third aspect of this utility model provides a compressor that includes the motor described in any of the above embodiments. The compressor according to this utility model, while ensuring the oil-blocking function of the oil baffle 30, can effectively reduce the processing difficulty and defect rate of the oil baffle 30, and can correspondingly reduce the thickness of the oil baffle 30, thereby lowering production costs.
[0043] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the rotor assembly, motor, and compressor of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.
Claims
1. A rotor assembly, characterized in that: The device includes a rotor core, rivets, and an oil baffle. The rotor core has a flow hole extending through it along its axial direction. A support portion is provided on the outer periphery of the rivet. The rivet extends through the rotor core along its axial direction, and one end of the support portion abuts against the end face of the rotor core. The oil baffle is fixedly disposed on the end face of the support portion away from the rotor core, and the projection of the oil baffle in the axial direction of the rotor core completely covers the flow hole.
2. The rotor assembly according to claim 1, characterized in that: An end plate is provided on the end face of the rotor core, the rivet passes through the end plate and the rotor core, and one end of the support abuts against the end plate.
3. The rotor assembly according to claim 1, characterized in that: The rotor core is provided with a plurality of rivets, and each rivet has a support portion on its outer periphery. The oil baffle is fixedly disposed on the support portion of the plurality of rivets.
4. The rotor assembly according to claim 3, characterized in that: Several of the rivets are distributed at circumferential intervals along the rotor core.
5. The rotor assembly according to claim 3, characterized in that: A flow channel is formed between two adjacent support parts.
6. The rotor assembly according to claim 1, characterized in that: The support part is one of the following: cylindrical, square block, or arc-shaped block.
7. The rotor assembly according to claim 1, characterized in that: The rotor core has a first through hole extending through its center along its axial direction. The oil baffle is an annular structure with a second through hole extending through its center. The first through hole and the second through hole are coaxially arranged, and the inner diameter of the first through hole is equal to the inner diameter of the second through hole.
8. The rotor assembly according to claim 1, characterized in that: The outer diameter of the support is D, and the outer diameter of the rivet is d, satisfying the relationship: D≥2d.
9. An electric motor, characterized in that: Includes the rotor assembly according to any one of claims 1 to 8.
10. A compressor, characterized in that: Includes the motor as described in claim 9.