CN115833450A - Magnetic suspension motor - Google Patents
Magnetic suspension motor Download PDFInfo
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- CN115833450A CN115833450A CN202211717710.7A CN202211717710A CN115833450A CN 115833450 A CN115833450 A CN 115833450A CN 202211717710 A CN202211717710 A CN 202211717710A CN 115833450 A CN115833450 A CN 115833450A
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Abstract
The invention discloses a magnetic suspension motor, which aims to solve the technical problem that one end of a motor rotor is heavy and the other end of the motor rotor is light due to unreasonable design of a magnetic suspension bearing system in the conventional magnetic suspension motor. The method comprises the following steps: a housing; a motor stator; the motor rotor is matched with the motor stator and is rotatably supported in the shell; the magnetic suspension bearing system is used for rotatably supporting the motor rotor in the shell; the protective bearing system is arranged between the shell and the motor rotor to assist in supporting the motor rotor; the magnetic suspension bearing system comprises a front magnetic suspension bearing system and a rear magnetic suspension bearing system which are symmetrically arranged in the front-back direction, the front magnetic suspension bearing system and the rear magnetic suspension bearing system respectively comprise an electromagnetic magnetic suspension radial bearing, an electromagnetic magnetic suspension axial bearing and a sensor assembly, and the sensor assembly is used for monitoring the radial position and the axial position of the motor rotor so as to respectively control the electromagnetic magnetic suspension radial bearing and the electromagnetic magnetic suspension axial bearing.
Description
Technical Field
The invention relates to a magnetic suspension motor.
Background
The existing magnetic suspension motor mainly comprises a shell, a motor stator, a motor rotor, a magnetic suspension bearing system and a protective bearing system. The motor stator is installed in the shell, the motor rotor is matched with the motor stator and rotatably supported in the shell, the magnetic suspension bearing system is used for rotatably supporting the motor rotor in the shell, and the protection bearing system is installed between the shell and the motor rotor and used for assisting in supporting the motor rotor. Generally speaking, a magnetic suspension bearing system in an existing magnetic suspension motor comprises a front electromagnetic magnetic suspension radial bearing, a rear electromagnetic magnetic suspension radial bearing and an electromagnetic magnetic suspension axial bearing (also called an electromagnetic magnetic suspension thrust bearing), wherein the electromagnetic magnetic suspension axial bearing is either close to the front electromagnetic magnetic suspension radial bearing or close to the rear electromagnetic magnetic suspension radial bearing, so that one end of a motor rotor is heavy and the other end of the motor rotor is light, thereby affecting the dynamics of the motor rotor, causing the motor rotor to generate a gyro effect, affecting the dynamic balance of the motor rotor, affecting the first-order mode of the rotor, causing the rotating speed of the first-order mode of the rotor to be reduced, being not beneficial to improving the rotating speed of the motor and affecting the control precision.
In addition, the protection bearing system in the existing magnetic suspension motor mainly comprises a front protection bearing system and a rear protection bearing system, the front protection bearing system and the rear protection bearing system respectively comprise a protection bearing seat and a protection bearing, the protection bearing seat is installed at the end part of the shell, the outer ring of the protection bearing is installed in the protection bearing seat, and the inner ring of the protection bearing is directly sleeved at the end part of the motor rotor. When the magnetic suspension motor works normally, the bearing is protected from bearing load, and when the magnetic suspension bearing system fails, the bearing is protected from bearing load, so that parts such as the magnetic suspension bearing system and the like are protected from being impacted greatly. The existing protective bearing system has the problem that the end part of a motor rotor is easy to damage when the protective bearing bears impact.
Disclosure of Invention
The invention aims to provide a magnetic suspension motor to solve the technical problem that one end of a motor rotor is heavy and the other end of the motor rotor is light due to unreasonable design of a magnetic suspension bearing system in the conventional magnetic suspension motor. The second objective of the present invention is to provide a magnetic suspension motor to solve the problem that the end of the motor rotor is easily damaged when the protection bearing bears the impact due to the unreasonable design of the protection bearing system in the existing magnetic suspension motor.
In a first aspect, there is provided a magnetic levitation motor comprising: a housing; a motor stator mounted in the housing; the motor rotor is matched with the motor stator and is rotatably supported in the shell; the magnetic suspension bearing system is used for rotatably supporting the motor rotor in the shell; the protective bearing system is arranged between the shell and the motor rotor to assist in supporting the motor rotor; the magnetic suspension bearing system comprises a front magnetic suspension bearing system and a rear magnetic suspension bearing system which are symmetrically arranged in the front-back direction, the front magnetic suspension bearing system and the rear magnetic suspension bearing system respectively comprise an electromagnetic magnetic suspension radial bearing, an electromagnetic magnetic suspension axial bearing and a sensor assembly, and the sensor assembly is used for monitoring the radial and axial positions of the motor rotor so as to respectively control the electromagnetic magnetic suspension radial bearing and the electromagnetic magnetic suspension axial bearing.
Furthermore, the front magnetic suspension bearing system and the rear magnetic suspension bearing system respectively comprise the electromagnetic magnetic suspension radial bearing, the electromagnetic magnetic suspension axial bearing and the sensor assembly which are sequentially arranged from the center of the motor rotor to the end part of the motor rotor.
Further, the electromagnetic magnetic levitation radial bearing, the electromagnetic magnetic levitation axial bearing and the sensor assembly of the front magnetic levitation bearing system are interchangeable with the electromagnetic magnetic levitation radial bearing, the electromagnetic magnetic levitation axial bearing and the sensor assembly of the rear magnetic levitation bearing system, respectively.
Further, the front magnetic suspension bearing system and the rear magnetic suspension bearing system also comprise magnetic bearing seats, and the magnetic bearing seats are installed at the end part of the shell.
Further, the magnetic bearing blocks of the front magnetic bearing train and the magnetic bearing blocks of the rear magnetic bearing train may be interchanged.
Furthermore, the electromagnetic magnetic suspension radial bearing comprises an electromagnetic magnetic suspension radial bearing stator component and an iron core which is sleeved in the electromagnetic magnetic suspension radial bearing stator component and radially matched with the electromagnetic magnetic suspension radial bearing stator component, the iron core is sleeved on the motor rotor, and the electromagnetic magnetic suspension radial bearing stator component is arranged in a magnetic bearing seat.
Furthermore, the electromagnetic magnetic suspension axial bearing comprises an electromagnetic magnetic suspension axial bearing body and a thrust disc axially matched with the electromagnetic magnetic suspension axial bearing body, the thrust disc is sleeved on the motor rotor, and the electromagnetic magnetic suspension axial bearing body is arranged in a magnetic bearing seat.
Furthermore, the sensor assembly comprises a sensor body and a detection ring which is sleeved in the sensor body and is radially matched with the sensor body, the detection ring is sleeved on the motor rotor, and the sensor body is arranged in the magnetic bearing seat.
Furthermore, the protection bearing system comprises a front protection bearing system and a rear protection bearing system, the front protection bearing system and the rear protection bearing system both comprise a protection bearing seat and a protection bearing, the protection bearing seat is installed at the end part of the shell through the magnetic bearing seat, the outer ring of the protection bearing is installed in the protection bearing seat, the end part of the motor rotor is detachably provided with a conical sleeve, the conical sleeve and the motor rotor are radially matched through a conical surface, and the inner ring of the protection bearing is installed on the conical sleeve.
Furthermore, a convex shoulder is arranged on the conical sleeve, one end face of the convex shoulder axially compresses a part, which is used for being installed on the motor rotor, in the magnetic suspension bearing system from the end part of the motor rotor to the center direction of the motor rotor, and the other end face of the convex shoulder is in axial clearance fit with the end face of the corresponding inner ring of the protection bearing.
The magnetic suspension bearing system of the magnetic suspension motor in the first aspect comprises a front magnetic suspension bearing system and a rear magnetic suspension bearing system which are symmetrically arranged front and back, the front magnetic suspension bearing system and the rear magnetic suspension bearing system respectively comprise an electromagnetic magnetic suspension radial bearing, an electromagnetic magnetic suspension axial bearing and a sensor assembly, and the sensor assembly is used for monitoring the radial position and the axial position of the motor rotor so as to control the electromagnetic magnetic suspension radial bearing and the electromagnetic magnetic suspension axial bearing respectively.
In a second aspect, there is provided a magnetic levitation motor comprising: a housing; a motor stator mounted in the housing; the motor rotor is matched with the motor stator and is rotatably supported in the shell; the magnetic suspension bearing system is used for rotatably supporting the motor rotor in the shell; the protective bearing system is arranged between the shell and the motor rotor to assist in supporting the motor rotor; protection bearing system contains preceding protection bearing system and back protection bearing system, preceding protection bearing system with back protection bearing system contains protection bearing frame and protection bearing respectively, the protection bearing frame is installed the tip of casing, the outer lane of protection bearing is installed in the protection bearing frame, electric motor rotor's tip demountable installation has the toper cover, the toper cover with through the radial cooperation of conical surface between the electric motor rotor, the inner circle of protection bearing is installed on the toper.
Furthermore, a convex shoulder is arranged on the conical sleeve, one end face of the convex shoulder axially compresses a part, which is used for being installed on the motor rotor, in the magnetic suspension bearing system from the end part of the motor rotor to the center direction of the motor rotor, and the other end face of the convex shoulder is in axial clearance fit with the end face of the corresponding inner ring of the protection bearing.
Furthermore, the magnetic suspension bearing system comprises a front magnetic suspension bearing system and a rear magnetic suspension bearing system, the front magnetic suspension bearing system and the rear magnetic suspension bearing system both comprise an electromagnetic magnetic suspension radial bearing, an electromagnetic magnetic suspension axial bearing and a sensor assembly, and the sensor assembly is used for monitoring the radial and axial positions of the motor rotor so as to control the electromagnetic magnetic suspension radial bearing and the electromagnetic magnetic suspension axial bearing respectively.
Furthermore, the front magnetic suspension bearing system and the rear magnetic suspension bearing system respectively comprise the electromagnetic magnetic suspension radial bearing, the electromagnetic magnetic suspension axial bearing and the sensor assembly which are sequentially arranged from the center of the motor rotor to the end part of the motor rotor.
Further, the front magnetic suspension bearing system and the rear magnetic suspension bearing system also comprise magnetic bearing seats, and the magnetic bearing seats are installed at the end parts of the shell.
Furthermore, the electromagnetic magnetic suspension radial bearing comprises an electromagnetic magnetic suspension radial bearing stator component and an iron core which is sleeved in the electromagnetic magnetic suspension radial bearing stator component and radially matched with the electromagnetic magnetic suspension radial bearing stator component, the iron core is sleeved on the motor rotor, and the electromagnetic magnetic suspension radial bearing stator component is arranged in a magnetic bearing seat.
Furthermore, the electromagnetic magnetic suspension axial bearing comprises an electromagnetic magnetic suspension axial bearing body and a thrust disc axially matched with the electromagnetic magnetic suspension axial bearing body, the thrust disc is sleeved on the motor rotor, and the electromagnetic magnetic suspension axial bearing body is arranged in a magnetic bearing seat.
Furthermore, the sensor assembly comprises a sensor body and a detection ring which is sleeved in the sensor body and is radially matched with the sensor body, the detection ring is sleeved on the motor rotor, and the sensor body is arranged in the magnetic bearing seat.
Furthermore, one side end face of the shoulder axially presses the detection ring from the end part of the motor rotor to the center direction of the motor rotor, so that the detection ring axially presses the iron core through the thrust disc.
Furthermore, the detection ring is installed on the conical sleeve, and the end face of the conical sleeve is axially matched with the end face of the thrust disc.
The protection bearing system of the magnetic suspension motor of the above-mentioned second aspect contains preceding protection bearing system and back protection bearing system, preceding protection bearing system with back protection bearing system contains protection bearing frame and protection bearing respectively, the protection bearing frame is installed the tip of casing, the outer lane of protection bearing is installed in the protection bearing frame, electric motor rotor's tip demountable installation has the taper sleeve, the taper sleeve with through the radial cooperation of conical surface between the electric motor rotor, the inner circle of protection bearing is installed on the taper sleeve, like this, accessible when protection bearing bears the impact the taper sleeve has the tip of effectively protecting electric motor rotor, if the taper sleeve is impaired, can be convenient change.
The invention is further described with reference to the following figures and detailed description. Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to assist in understanding the present application and are incorporated in and constitute a part of this specification, with the understanding that the present application is to be considered an exemplification of the principles of the invention and is not intended to be unduly limiting. In the drawings:
fig. 1 is a schematic structural diagram of a magnetic levitation motor according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of the magnetic levitation motor shown in fig. 1.
Detailed Description
The invention will be described more fully hereinafter with reference to the accompanying drawings. Those skilled in the art will be able to implement the invention based on these teachings. Before the present invention is described in detail with reference to the accompanying drawings, it is to be noted that:
the technical solutions and features provided in the respective sections including the following description may be combined with each other without conflict. Furthermore, where possible, these technical solutions, technical features and related combinations may be given specific technical subject matter and are protected by the accompanying patent.
The embodiments of the invention referred to in the following description are generally only some embodiments, rather than all embodiments, on the basis of which all other embodiments that can be derived by a person skilled in the art without inventive step should be considered within the scope of patent protection.
The terms "comprising," "including," "having," and any variations thereof in this specification and in the claims and following claims are intended to cover non-exclusive inclusions. Other related terms and units can be reasonably construed based on the description to provide related contents.
Fig. 1 is a schematic structural diagram of a magnetic levitation motor according to an embodiment of the present application. As shown in fig. 1, a magnetic levitation motor includes: the motor comprises a shell 1, a motor stator 2, a motor rotor 3, a magnetic suspension bearing system and a protection bearing system. Wherein the motor stator 2 is mounted in the housing 1. The motor rotor 3 is matched with the motor stator 2 and is rotatably supported in the shell 1. The magnetic bearing system is used for rotatably supporting the motor rotor 3 in the housing 1. The protective bearing system is arranged between the shell 1 and the motor rotor 2 to assist in supporting the motor rotor 2. Specifically, the magnetic suspension bearing system comprises a front magnetic suspension bearing system and a rear magnetic suspension bearing system which are symmetrically arranged in front and back, the front magnetic suspension bearing system and the rear magnetic suspension bearing system both comprise an electromagnetic magnetic suspension radial bearing 41, an electromagnetic magnetic suspension axial bearing 42 and a sensor assembly 43, and the sensor assembly 43 is used for monitoring the radial and axial positions of the motor rotor 3 so as to respectively control the electromagnetic magnetic suspension radial bearing 41 and the electromagnetic magnetic suspension axial bearing 43. Protection bearing system then contains preceding protection bearing system and back protection bearing system, preceding protection bearing system with back protection bearing system contains protection bearing frame 51 and protection bearing 52 respectively, protection bearing frame 51 is installed the tip of casing 1, protection bearing 52's outer lane is installed in the protection bearing frame 51, motor rotor 3's tip demountable installation has toper cover 31, toper cover 31 with through the radial cooperation of conical surface between the motor rotor 3, protection bearing 52's inner circle is installed on the toper cover 31.
The magnetic suspension bearing system of the magnetic suspension motor comprises a front magnetic suspension bearing system and a rear magnetic suspension bearing system which are symmetrically arranged in the front and the rear, the front magnetic suspension bearing system and the rear magnetic suspension bearing system respectively comprise an electromagnetic magnetic suspension radial bearing 41, an electromagnetic magnetic suspension axial bearing 42 and a sensor assembly 43, and the sensor assembly 43 is used for monitoring the radial position and the axial position of the motor rotor 3 so as to respectively control the electromagnetic magnetic suspension radial bearing 41 and the electromagnetic magnetic suspension axial bearing 42, so that the electromagnetic magnetic suspension radial bearing 41, the electromagnetic magnetic suspension axial bearing 42 and the sensor assembly 43 are respectively arranged at the front end and the rear end of the motor rotor 3, the rotor dynamics is effectively improved, the rotor gyroscopic effect is reduced, the dynamic balance of the rotor is optimized, the first-order mode of the rotor is improved, the motor can realize higher rotating speed, and the control difficulty is reduced.
In addition, above-mentioned magnetic suspension motor's protection bearing system contains preceding protection bearing system and back protection bearing system, preceding protection bearing system with back protection bearing system contains protection bearing frame 51 and protection bearing 52 respectively, protection bearing frame 51 is installed the tip of casing 1, protection bearing 52's outer lane is installed in protection bearing frame 51, motor rotor 3's tip demountable installation has taper sleeve 31, taper sleeve 31 with through the radial cooperation of conical surface between the motor rotor 3, protection bearing 52's inner circle is installed on the taper sleeve 31, like this, when protection bearing 52 bears the impact the accessible taper sleeve 31 effectively protects motor rotor 3's tip, if taper sleeve 31 is impaired, also can be convenient change. Because the conical sleeve 31 and the motor rotor 3 are radially matched through a conical surface, the coaxiality of the conical sleeve 31 and the motor rotor 3 is ensured, and in addition, the conical sleeve 31 is also assembled and disassembled.
Fig. 2 is a schematic view of the external structure of the magnetic levitation motor shown in fig. 1 (after the sleeve 12 is removed). As shown in fig. 1-2, a longitudinal section of the housing 1 of the magnetic levitation motor (i.e., a section passing through a central axis of the housing 1, the central axis of the housing 1 being located on the longitudinal section) is an inverted T-shaped structure, and a plurality of annular grooves 11 are formed on a surface of the housing 1 and spaced along the central axis of the housing 1, the annular grooves 11 are closed by a sleeve 12 mounted on the surface of the housing 1 to form an annular flow passage, adjacent annular grooves 11 are communicated by openings 13, and the openings 13 are sequentially distributed on two sides of a longitudinal partition 14 on the surface of the housing 1 (i.e., one opening 13 is arranged on one side of the longitudinal partition 14 and the next opening 13 is arranged on the other side of the longitudinal partition 14), so that each annular flow passage is sequentially connected in series. The surface of the housing 1 is provided with a cooling liquid input interface and a cooling liquid output interface which are communicated with the annular flow passages. Due to the fact that the cooling structure is arranged on the surface of the shell 1, the shell 1 can be cooled. The cooling structure can be directly processed on the shell 1, and is convenient to manufacture.
Generally, the front magnetic suspension bearing system and the rear magnetic suspension bearing system each further comprise a magnetic bearing seat 44, and the magnetic bearing seats 44 are mounted at the end of the housing 1. On this basis, the protective bearing seat 51 can be mounted on the end of the housing 1 via the magnetic bearing seat 44. Specifically, the magnetic bearing housing 44 may be fastened to the end of the housing 1 by bolts, and then, the protective bearing housing 51 may be fastened to the end of the magnetic bearing housing 44 by bolts.
In a preferred embodiment, the electromagnetic magnetic levitation radial bearing 41, the electromagnetic magnetic levitation axial bearing 42 and the sensor assembly 43 of the front magnetic levitation bearing train are interchangeable with the electromagnetic magnetic levitation radial bearing 41, the electromagnetic magnetic levitation axial bearing 42 and the sensor assembly 43 of the rear magnetic levitation bearing train, respectively. Likewise, the magnetic bearing blocks 44 of the front magnetic bearing train and the magnetic bearing blocks 44 of the rear magnetic bearing train can also be interchanged. Therefore, the number of parts can be effectively reduced, the cost is reduced, the production efficiency of the motor is improved, modularization and standardization establishment are facilitated, and production management is facilitated.
In a preferred embodiment, the front magnetic bearing system and the rear magnetic bearing system each comprise the electromagnetic magnetic radial bearing 41, the electromagnetic magnetic axial bearing 42 and the sensor assembly 43 arranged in sequence from the center of the motor rotor 3 to the end of the motor rotor 3.
The electromagnetic magnetic suspension radial bearing 41 includes an electromagnetic magnetic suspension radial bearing stator assembly 411 and an iron core 412 sleeved in the electromagnetic magnetic suspension radial bearing stator assembly 411 and radially matched with the electromagnetic magnetic suspension radial bearing stator assembly 411, the iron core 412 is sleeved on the motor rotor 3, and the electromagnetic magnetic suspension radial bearing stator assembly 411 is installed in the magnetic bearing seat 44. The working principle of the electromagnetic magnetic suspension radial bearing 41 is as follows: a plurality of electromagnets are circumferentially distributed in the electromagnetic magnetic suspension radial bearing stator assembly 411 at intervals, and the electromagnets respectively generate magnetic fields to attract the iron core 412, so that the motor rotor 3 is radially suspended.
The electromagnetic magnetic suspension axial bearing 42 includes an electromagnetic magnetic suspension axial bearing body 421 and a thrust disc 422 axially matched with the electromagnetic magnetic suspension axial bearing body 421, the thrust disc 422 is sleeved on the motor rotor 3, and the electromagnetic magnetic suspension axial bearing body 421 is installed in the magnetic bearing seat 44. The working principle of the electromagnetic magnetic suspension axial bearing 42 is as follows: the electromagnetic magnetic suspension axial bearing body 421 is provided with an electromagnet, and the electromagnet generates a magnetic field to attract the thrust disc 422, so that the motor rotor 3 moves axially. Because the two ends of the motor rotor 3 are both provided with the electromagnetic magnetic suspension axial bearings 42, the two electromagnetic magnetic suspension axial bearings 42 respectively apply opposite axial forces to the motor rotor 3, so that the motor rotor 3 axially suspends.
In addition, the sensor assembly 43 includes a sensor body 431 and a detection ring 432 fitted in the sensor body 431 and radially fitted to the sensor body 431, the detection ring 432 is fitted on the motor rotor 3, and the sensor body 431 is mounted in the magnet bearing holder 44. The working principle of the sensor assembly 43 is as follows: distributed in the sensor body 431 are a plurality of sensors, including a sensor for detecting the radial position of the detection ring 432 and a sensor for detecting the axial position of the thrust disk 422, so as to monitor the radial and axial position of the motor rotor 3 and thus control the electromagnetic magnetic levitation radial bearing 41 and the electromagnetic magnetic levitation axial bearing 43, respectively.
More specifically, as shown in fig. 1, the sensor body 431 has an annular structure, and the end surface of the sensor body 431 on the side opposite to the thrust disk 422 is provided with a step groove 4311, and the step groove 4311 just allows an axial gap between the thrust disk 422 and the sensor body 431. The advantage of this design is that the overall thickness of the sensor body 431 is smaller, which is beneficial to the compactness of the magnetic levitation motor.
It can be seen that the electromagnetic magnetic suspension radial bearing 41, the electromagnetic magnetic suspension axial bearing 42 and the sensor assembly 43 are arranged in sequence from the center of the motor rotor 3 to the end of the motor rotor 3, which facilitates the installation layout of the electromagnetic magnetic suspension radial bearing 41, the electromagnetic magnetic suspension axial bearing 42 and the sensor assembly 43.
As shown in fig. 1, a shoulder 311 is further provided on the tapered sleeve 31, one end surface of the shoulder 311 axially presses a portion of the magnetic suspension bearing system for being mounted on the motor rotor 3 from an end of the motor rotor 3 toward a center direction of the motor rotor, and the other end surface of the shoulder 311 axially fits with a corresponding inner ring end surface of the protection bearing 52 with a clearance.
Specifically, one end surface of the shoulder 311 axially presses the detection ring 432 from the end of the motor rotor 3 toward the center of the motor rotor 3, and the detection ring 432 is axially pressed against the core 412 by the thrust plate 422. Furthermore, the detection ring 432 is mounted on the conical sleeve 31, and the end surface of the conical sleeve 31 is axially fitted with the end surface of the thrust disk 422.
The structure uses the conical sleeve 31 to axially compress the portion of the magnetic suspension bearing system for mounting on the motor rotor 3, so that the magnetic suspension bearing system is more stably mounted. Meanwhile, because the other side end face of the shoulder 311 is in axial clearance fit with the corresponding inner ring end face of the protection bearing 52, when the magnetic suspension motor works at a high speed, the motor rotor 3 generates heat and extends axially, and the conical sleeve 31 cannot axially push against the protection bearing 52.
The magnetic suspension motor can be especially used as a motor of a refrigerant compressor. The refrigerant compressor belongs to one of industrial compressors, because the refrigerant can be used as a cooling medium, the internal temperature of the magnetic suspension motor can be controlled below 40 degrees, the temperature rise of a rotating shaft can be ignored, the heat loss is small, and the work doing efficiency is higher.
The contents related to the present application are explained above. Those of ordinary skill in the art will be able to implement the present application based on these teachings. All other embodiments made by those skilled in the art without any inventive step based on the above description shall fall within the scope of the present application.
Claims (10)
1. A magnetically levitated motor comprising:
a housing;
a motor stator mounted in the housing;
the motor rotor is matched with the motor stator and is rotatably supported in the shell;
the magnetic suspension bearing system is used for rotatably supporting the motor rotor in the shell;
the protective bearing system is arranged between the shell and the motor rotor to assist in supporting the motor rotor;
the method is characterized in that:
the magnetic suspension bearing system comprises a front magnetic suspension bearing system and a rear magnetic suspension bearing system which are symmetrically arranged in the front-back direction, the front magnetic suspension bearing system and the rear magnetic suspension bearing system respectively comprise an electromagnetic magnetic suspension radial bearing, an electromagnetic magnetic suspension axial bearing and a sensor assembly, and the sensor assembly is used for monitoring the radial position and the axial position of the motor rotor so as to respectively control the electromagnetic magnetic suspension radial bearing and the electromagnetic magnetic suspension axial bearing.
2. The magnetic levitation motor of claim 1, wherein: the front magnetic suspension bearing system and the rear magnetic suspension bearing system respectively comprise the electromagnetic magnetic suspension radial bearing, the electromagnetic magnetic suspension axial bearing and the sensor assembly which are sequentially arranged from the center of the motor rotor to the end part of the motor rotor.
3. The magnetic levitation motor of claim 1, wherein: the electromagnetic magnetic suspension radial bearing, the electromagnetic magnetic suspension axial bearing and the sensor assembly of the front magnetic suspension bearing system are respectively interchangeable with the electromagnetic magnetic suspension radial bearing, the electromagnetic magnetic suspension axial bearing and the sensor assembly of the rear magnetic suspension bearing system.
4. The magnetic levitation motor of claim 1, wherein: the front magnetic suspension bearing system and the rear magnetic suspension bearing system also comprise magnetic bearing seats, and the magnetic bearing seats are arranged at the end part of the shell.
5. The magnetic levitation motor of claim 4, wherein: the magnetic bearing seats of the front magnetic bearing train and the magnetic bearing seats of the rear magnetic bearing train are interchangeable.
6. The magnetic levitation motor of claim 4, wherein: the electromagnetic magnetic suspension radial bearing comprises an electromagnetic magnetic suspension radial bearing stator component and an iron core which is sleeved in the electromagnetic magnetic suspension radial bearing stator component and radially matched with the electromagnetic magnetic suspension radial bearing stator component, the iron core is sleeved on the motor rotor, and the electromagnetic magnetic suspension radial bearing stator component is installed in a magnetic bearing seat.
7. The magnetic levitation motor of claim 4, wherein: the electromagnetic magnetic suspension axial bearing comprises an electromagnetic magnetic suspension axial bearing body and a thrust disc axially matched with the electromagnetic magnetic suspension axial bearing body, the thrust disc is sleeved on the motor rotor, and the electromagnetic magnetic suspension axial bearing body is arranged in a magnetic bearing seat.
8. The magnetic levitation motor of claim 4, wherein: the sensor assembly comprises a sensor body and a detection ring which is sleeved in the sensor body and is radially matched with the sensor body, the detection ring is sleeved on the motor rotor, and the sensor body is arranged in a magnetic bearing seat.
9. The magnetic levitation motor of claim 4, wherein: the protection bearing system comprises a front protection bearing system and a rear protection bearing system, the front protection bearing system and the rear protection bearing system both comprise a protection bearing seat and a protection bearing, the protection bearing seat is installed at the end part of the shell through the magnetic bearing seat, the outer ring of the protection bearing is installed in the protection bearing seat, the end part of the motor rotor is detachably provided with a conical sleeve, the conical sleeve is radially matched with the motor rotor through a conical surface, and the inner ring of the protection bearing is installed on the conical sleeve.
10. The magnetic levitation motor of claim 9, wherein: and a convex shoulder is arranged on the conical sleeve, one end face of the convex shoulder axially compresses the part, which is used for being installed on the motor rotor, of the magnetic suspension bearing system from the end part of the motor rotor to the center direction of the motor rotor, and the other end face of the convex shoulder is in axial clearance fit with the end face of the corresponding inner ring of the protection bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211717710.7A CN115833450A (en) | 2022-12-29 | 2022-12-29 | Magnetic suspension motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211717710.7A CN115833450A (en) | 2022-12-29 | 2022-12-29 | Magnetic suspension motor |
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| Publication Number | Publication Date |
|---|---|
| CN115833450A true CN115833450A (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211717710.7A Pending CN115833450A (en) | 2022-12-29 | 2022-12-29 | Magnetic suspension motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117595547A (en) * | 2024-01-18 | 2024-02-23 | 齐齐哈尔市君威节能科技有限公司 | Magnetic suspension breeze generator rotor winding and assembly equipment thereof |
-
2022
- 2022-12-29 CN CN202211717710.7A patent/CN115833450A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117595547A (en) * | 2024-01-18 | 2024-02-23 | 齐齐哈尔市君威节能科技有限公司 | Magnetic suspension breeze generator rotor winding and assembly equipment thereof |
| CN117595547B (en) * | 2024-01-18 | 2024-04-02 | 齐齐哈尔市君威节能科技有限公司 | Magnetic suspension breeze generator rotor winding and assembly equipment thereof |
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