CN112152359A - Rotor structure and motor - Google Patents
Rotor structure and motor Download PDFInfo
- Publication number
- CN112152359A CN112152359A CN202011073233.6A CN202011073233A CN112152359A CN 112152359 A CN112152359 A CN 112152359A CN 202011073233 A CN202011073233 A CN 202011073233A CN 112152359 A CN112152359 A CN 112152359A
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- China
- Prior art keywords
- permanent magnet
- rotor structure
- mandrel
- rotor
- positioning
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
- H02K1/325—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium between salient poles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
This application relates to motor technical field on the whole, particularly, relates to a rotor structure and motor, rotor structure include the dabber and be used for with the permanent magnet that the connection was established to the dabber cover, the dabber is monolithic structure, has replaced the dabber of current multistage structural style, has avoided the axiality deviation unusual, has improved rotor structure's suspension precision, the dabber is provided with first location structure, the permanent magnet is provided with second location structure, first location structure be used for with the cooperation of second location structure is connected, with the restriction permanent magnet circumferential direction avoids the permanent magnet to magnetize the direction and takes place the skew, guarantees the reliability of rotor structure operation.
Description
Technical Field
The application generally relates to the technical field of motors, and particularly relates to a rotor structure and a motor.
Background
The magnetic suspension motor is a low-loss and high-performance motor, which utilizes the electromagnetic force action of a magnetic suspension bearing to suspend a motor rotor in the air, so that the motor rotor is not in mechanical contact with a motor stator and is not in mechanical friction.
The existing permanent magnet is in an annular structure, the front short shaft and the rear short shaft are matched with the permanent magnet, the permanent magnet can deviate along the circumferential direction, the permanent magnet adopts a parallel magnetizing mode, once the permanent magnet generates a deviation angle theta, the magnetizing direction also generates the theta angle correspondingly, and the magnetizing performance is reduced.
Disclosure of Invention
In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
In order to solve the above technical problem, a main object of the present application is to provide a rotor structure and a motor.
In order to achieve the purpose of the invention, the following technical scheme is adopted in the application:
a rotor structure comprises a mandrel and a permanent magnet, wherein the permanent magnet is sleeved and connected with the mandrel;
the dabber is provided with first location structure, the permanent magnet is provided with second location structure, first location structure be used for with second location structure cooperation is connected to the restriction permanent magnet circumferential direction.
Further, in some embodiments of the present disclosure, the first positioning structure includes a boss, and the second positioning structure includes a groove for cooperating with the boss.
Further, in some embodiments of the present disclosure, the boss and the groove are respectively disposed along an axial direction of the mandrel.
Further, in some embodiments of the present disclosure, the permanent magnet includes more than two permanent magnet blocks arranged in an even number in the circumferential direction;
the second positioning structure comprises a gap formed between two adjacent permanent magnets, and the first positioning structure comprises a positioning column matched with the gap.
Further, in some embodiments of the present disclosure, the mandrel is provided with an annular blocking platform, and the permanent magnet is blocked by the annular blocking platform.
Further, in some embodiments of the present disclosure, the rotor structure further includes a retaining ring connected to the mandrel sleeve, and the retaining ring and the annular retaining platform are disposed on two axial sides of the permanent magnet relatively.
Further, in some embodiments of the present disclosure, the permanent magnet is provided with a cooling flow channel for flowing a cooling medium, and the annular blocking platform and the blocking ring are respectively provided with a flow hole communicated with the cooling flow channel.
Further, in some embodiments of the present disclosure, the cooling flow channel includes a concave structure disposed on an outer peripheral side of the permanent magnet.
Further, in some embodiments of the present disclosure, the rotor structure further includes a sheath, the sheath is connected to the permanent magnet, and two axial ends of the sheath are respectively connected to the annular blocking platform and the blocking ring in an attaching manner.
An electric motor is provided with the rotor structure.
According to the technical scheme, the rotor structure and the motor have the advantages and positive effects that:
the magnetic suspension precision of the rotor structure under high-speed operation is ensured, the stability of the rotor structure is good, and the magnetizing angle of the permanent magnet is positioned and fixed.
Rotor structure include the dabber and be used for with the permanent magnet that the spindle cover was established and is connected, the dabber has been the monolithic structure, has replaced the dabber of current multistage structural style, has avoided the axiality deviation unusual, has improved rotor structure's suspension precision, the dabber is provided with first location structure, the permanent magnet is provided with second location structure, first location structure be used for with second location structure cooperation is connected, in order to restrict permanent magnet circumferential direction avoids the permanent magnet direction of magnetizing to take place the skew, guarantees the reliability of rotor structure operation.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is an exploded view of a rotor structure according to an exemplary embodiment.
FIG. 2 is a cross-sectional structural schematic view of a rotor structure shown in accordance with an exemplary embodiment.
FIG. 3 is an axial perspective structural schematic view of a rotor structure shown in accordance with an exemplary embodiment.
FIG. 4 is a schematic view of a slinger configuration of a rotor configuration shown in accordance with an exemplary embodiment.
Fig. 5 is a schematic view of a state structure of permanent magnets of a rotor structure according to an exemplary embodiment.
Wherein the reference numerals are as follows:
100-mandrel; 200-a permanent magnet; 300-baffle ring; 400-a sheath;
110-a first positioning structure; 120-ring-shaped baffle table; 121-a second flow through hole;
210-a second positioning structure; 220-cooling flow channel; 230-permanent magnet blocks;
310-a first flow through hole; 320-positioning groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
This scheme provides a rotor structure and motor, the motor is high-speed permanent-magnet machine, rotor structure include dabber 100 and be used for with dabber 100 cover establishes the permanent magnet 200 of being connected, dabber 100 adopts monolithic structure, the dabber 100 of having replaced current multistage structural style, the dabber 100 of having avoided multistage structural style has the unusual condition of axiality deviation, there is an angular deviation phi in the dabber 100 axle center of multistage structure, there is remaining unbalanced force when the rotor rotates, unbalanced force is the interference to bearing radial load, by formula Fe ═ U ω interference2*10-6It can be known, unbalanced force is directly proportional with the square of the rotational speed of pivot, directly proportional with the amount of unbalance, therefore, integral structure's dabber 100 has improved rotor structure's suspension precision, dabber 100 is provided with first location structure 110, permanent magnet 200 is provided with second location structure 210, first location structure 110 is connected with second location structure 210 cooperation, in this scheme, permanent magnet 200 adopts the mode of parallel magnetization to magnetize, first location structure 110 and second location structure 210 cooperation are connected the back, prevent permanent magnet 200 circumferential direction, avoid permanent magnet 200 magnetization direction to take place the skew, prevent the bias that magnetizes, guarantee the reliability of rotor structure operation.
Referring to fig. 1-2, the rotor structure includes a core shaft 100, a permanent magnet 200, a baffle ring 300 and a sheath 400, the core shaft 100 is provided with an annular baffle table 120, the permanent magnet 200 is sleeved on the core shaft 100, one side of the permanent magnet 200 in the circumferential direction is stopped on the annular baffle table 120, the baffle ring 300 is sleeved on the core shaft 100 through a thermal expansion process, the baffle ring 300 and the annular baffle table 120 are oppositely arranged on two opposite sides of the permanent magnet 200, so as to prevent the permanent magnet 200 from moving axially along the core shaft 100 and ensure the stability of the permanent magnet 200.
The mandrel 100 is provided with the first positioning structure 110, the permanent magnet 200 is provided with a second positioning structure 210 used for being connected and matched with the first positioning structure 110, as shown in fig. 1, in this scheme, the permanent magnet 200 may be an integral structure, the permanent magnet 200 may also be composed of more than two permanent magnets 230 arranged in a circumferential direction, the second positioning structure 210 includes a gap formed between two adjacent permanent magnets 230, the gap is arranged along the axial extension of the mandrel 100, the first positioning structure 110 includes a positioning column arranged along the axial extension of the mandrel 100, after the permanent magnets 230 are installed on the mandrel 100, a positioning column is provided between two adjacent permanent magnets 230, the positioning column limits the permanent magnets 230 to move in the circumferential direction of the mandrel 100, so as to avoid the deviation of the magnetizing direction of the permanent magnet 200.
Under the understanding of those skilled in the art, the present solution can also be understood as such, the mandrel 100 is provided with the first positioning structure 110, the permanent magnet 200 is provided with the second positioning structure 210 for being connected and matched with the first positioning structure 110, the first positioning structure 110 includes a boss arranged on the outer peripheral side of the mandrel 100, the second positioning structure 210 includes a groove arranged on the permanent magnet 200, the boss cooperates with the groove to limit the circumferential rotation of the permanent magnet 200, the groove extends from one end of the axial direction of the mandrel 100, the groove can be a strip-shaped groove arranged on the inner wall of the permanent magnet 200, and can also be a strip-shaped groove radially penetrating through the permanent magnet 200.
In this embodiment, one end of the positioning column is stopped at the annular stop table 120, the length of the positioning column is greater than the length of the permanent magnet 200, the permanent magnet 200 is installed on the mandrel 100, and after the permanent magnet 200 is abutted to the annular stop table 120, as shown in fig. 3, the part of the positioning column, which is far away from one side of the annular stop table 120, extends out of the permanent magnet 200, the stop ring 300 is provided with a positioning groove 320 for being matched with the positioning column, after the stop ring 300 is installed, the part of the permanent magnet 200 is clamped into the positioning groove 320, the stability of the stop ring 300.
Referring to fig. 2 to 5, the permanent magnet 200 is provided with a cooling flow channel 220 for flowing a cooling medium, and the cooling flow channel 220 extends along the axial direction of the permanent magnet 200, in this embodiment, the cooling flow channel 220 includes a concave structure disposed on the outer peripheral side of the permanent magnet 200, and as shown in fig. 5, the concave structure is a diversion trench disposed on the outer side of the permanent magnet 200. The baffle ring 300 and the annular baffle table 120 are respectively provided with a circulation hole for communicating with the diversion trench, the circulation hole formed in the baffle ring 300 is defined as a first circulation hole 310, the circulation hole formed in the annular baffle table 120 is defined as a second circulation hole 121, when the cooling flow channel 220 is provided with a plurality of flow holes, the first circulation hole 310 and the second circulation hole 121 are respectively and correspondingly provided with a plurality of flow holes, and when the permanent magnet 200 comprises more than two permanent magnets 230 arranged in a circumferential direction, each permanent magnet 230 can be respectively provided with the cooling flow channel 220.
The cooling flow passage 220 increases the contact area between the refrigerant and the rotor structure, and improves the cooling effect on the motor.
In this scheme, the external diameter that keeps off ring 300 external diameter and annular and keep off platform 120 all is greater than the external diameter of permanent magnet 200, and the external diameter that keeps off ring 300 is the same with the external diameter that annular kept off platform 120, and sheath 400 cover is established and is connected permanent magnet 200, and the both ends of sheath 400 axial direction keep off ring 300 and annular respectively and keep off platform 120 laminating connection, have eliminated sheath 400 axial ascending removal space, reduce the deflection of sheath 400 axial both sides, improve sheath 400's life.
The embodiment also provides a motor provided with the rotor structure.
In summary, the present scheme provides a rotor structure and a motor, the rotor structure includes a mandrel 100 and a permanent magnet 200 for sleeving connection with the mandrel 100, the mandrel 100 adopts an integral structure, replaces the existing mandrel 100 in a multi-section structure form, and avoids the condition that the mandrel 100 in the multi-section structure form has an abnormal coaxiality deviation; the permanent magnet 200 comprises more than two permanent magnets 230 which are arranged in the circumferential direction in an even number, after the permanent magnet 200 is assembled with the mandrel 100, an axially extending gap is formed between every two adjacent permanent magnets 230, the mandrel 100 is provided with positioning columns which extend along the axial direction, the positioning columns are matched with the gap, and the positioning columns limit the permanent magnets 230 to move in the circumferential direction of the mandrel 100, so that the deviation of the magnetizing direction of the permanent magnet 200 is avoided, the stability of the rotor structure is ensured, the outer peripheral side of the permanent magnet 200 is also provided with a cooling flow channel 220, the baffle ring 300 and the annular baffle table 120 are respectively provided with circulation holes communicated with the cooling flow channel 220, the contact area of a refrigerant and the rotor structure is increased, the cooling effect of the rotor structure is improved, the abnormal temperature rise caused by eddy.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The rotor structure is characterized by comprising a mandrel (100) and a permanent magnet (200) sleeved and connected with the mandrel (100);
the mandrel (100) is provided with a first positioning structure (110), the permanent magnet (200) is provided with a second positioning structure (210), and the first positioning structure (110) is used for being connected with the second positioning structure (210) in a matched mode so as to limit circumferential rotation of the permanent magnet (200).
2. The rotor structure according to claim 1, characterized in that the first positioning structure (110) comprises a boss and the second positioning structure (210) comprises a recess for cooperation with the boss.
3. A rotor structure according to claim 2, characterised in that the boss and the recess are each arranged along the axial extension of the mandrel (100).
4. The rotor structure according to claim 1, characterized in that the permanent magnet (200) comprises more than an even number of circumferentially arranged permanent magnet blocks (230);
the second positioning structure (210) comprises a gap formed between two adjacent permanent magnets (230), and the first positioning structure (110) comprises a positioning column matched with the gap.
5. The rotor structure according to claim 1, characterized in that the mandrel (100) is provided with an annular stop (120), the permanent magnet (200) being stopped against the annular stop (120).
6. The rotor structure of claim 5, further comprising a baffle ring (300) sleeved on the mandrel (100), wherein the baffle ring (300) and the annular baffle table (120) are oppositely arranged on two axial sides of the permanent magnet (200).
7. The rotor structure according to claim 6, wherein the permanent magnet (200) is provided with a cooling flow passage (220) for the circulation of a cooling medium, and the annular baffle table (120) and the baffle ring (300) are respectively provided with a circulation hole communicated with the cooling flow passage (220).
8. The rotor structure according to claim 7, characterized in that the cooling flow channel (220) comprises a concave structure provided on the outer circumferential side of the permanent magnet (200).
9. The rotor structure of claim 6, further comprising a sheath (400), wherein the sheath (400) is sleeved on the permanent magnet (200), and two axial ends of the sheath (400) are respectively attached to the annular baffle table (120) and the baffle ring (300).
10. An electrical machine, characterized in that a rotor construction according to any of claims 1-9 is fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011073233.6A CN112152359B (en) | 2020-10-09 | 2020-10-09 | Rotor structure and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011073233.6A CN112152359B (en) | 2020-10-09 | 2020-10-09 | Rotor structure and motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112152359A true CN112152359A (en) | 2020-12-29 |
| CN112152359B CN112152359B (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011073233.6A Active CN112152359B (en) | 2020-10-09 | 2020-10-09 | Rotor structure and motor |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08205438A (en) * | 1995-01-25 | 1996-08-09 | Toshiba Ave Corp | Motor |
| CN101777810A (en) * | 2010-03-31 | 2010-07-14 | 哈尔滨工业大学 | Automatic inner-cooling rotor of high speed permanent magnet synchronous motor |
| CN107394928A (en) * | 2017-09-11 | 2017-11-24 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of rotor and servomotor |
| CN207677531U (en) * | 2017-12-22 | 2018-07-31 | 陕西航天时代导航设备有限公司 | Combine magnet steel rotor |
| CN210468926U (en) * | 2019-09-04 | 2020-05-05 | 中山大洋电机股份有限公司 | Rotor assembly and motor using same |
| CN210724362U (en) * | 2019-11-29 | 2020-06-09 | 上海海立电器有限公司 | Permanent magnet synchronous motor for compressor and rotor assembly thereof |
-
2020
- 2020-10-09 CN CN202011073233.6A patent/CN112152359B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08205438A (en) * | 1995-01-25 | 1996-08-09 | Toshiba Ave Corp | Motor |
| CN101777810A (en) * | 2010-03-31 | 2010-07-14 | 哈尔滨工业大学 | Automatic inner-cooling rotor of high speed permanent magnet synchronous motor |
| CN107394928A (en) * | 2017-09-11 | 2017-11-24 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of rotor and servomotor |
| CN207677531U (en) * | 2017-12-22 | 2018-07-31 | 陕西航天时代导航设备有限公司 | Combine magnet steel rotor |
| CN210468926U (en) * | 2019-09-04 | 2020-05-05 | 中山大洋电机股份有限公司 | Rotor assembly and motor using same |
| CN210724362U (en) * | 2019-11-29 | 2020-06-09 | 上海海立电器有限公司 | Permanent magnet synchronous motor for compressor and rotor assembly thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112152359B (en) | 2022-04-12 |
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