Internal cooling structure of magnetic levitation motor and magnetic levitation motor

Abstract

The utility model provides a magnetic levitation motor internal cooling structure and a magnetic levitation motor, the magnetic levitation motor internal cooling structure comprises a casing, a motor rotor, a motor stator and at least one impeller, the motor stator is fixedly mounted on the inner side surface of the casing, and air inlets are formed in the two ends of the casing; the two ends of a rotating shaft of the motor rotor are rotatably installed on the machine shell through magnetic suspension bearings. A ventilation channel is formed between the motor rotor and the motor stator, the motor rotor is provided with at least one impeller at two ends in the motor stator, and the motor rotor synchronously drives the impeller to rotate when rotating; a plurality of first notches are formed in the machine shell in the circumferential direction, the first notches are communicated with the motor rotor through the motor stator, air passing through the motor rotor can be conveniently discharged out of the motor, air circulation is achieved, and the purpose of rapid heat dissipation and cooling is achieved. According to the internal cooling structure of the magnetic levitation motor, the impeller is arranged on the rotor, so that rapid heat dissipation of the interior of the motor is realized, and energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor cooling, in particular to an internal cooling structure of a magnetic levitation motor and a magnetic levitation motor. Background Art

[0002] With the advancement of technology, especially the increasing use of high-speed rotating equipment such as magnetic levitation motors, internal thermal management has become a key factor affecting their reliability and service life, while also meeting high performance requirements. Traditionally, various cooling measures have been implemented to ensure efficient and stable motor operation to prevent failures caused by overheating. However, existing motor cooling methods often rely on external forced cooling systems. This not only requires an additional power source and complex piping arrangements, increasing system complexity and energy consumption, but also has low cooling efficiency, making it difficult to meet the rapid heat dissipation requirements of high-power density, high-speed motors. Utility Model Content

[0003] The purpose of the present application is to provide a magnetic levitation motor internal cooling structure and a magnetic levitation motor, so as to solve the problem of low internal cooling efficiency of magnetic levitation motors in the prior art.

[0004] To achieve this goal, this application adopts the following technical solutions:

[0005] The present application provides a magnetic levitation motor internal cooling structure for the magnetic levitation motor, which includes a housing, a motor rotor, a motor stator, and at least one impeller, wherein:

[0006] The motor stator is fixedly mounted on the inner side of the casing, with air inlets provided at both ends of the casing. The motor rotor is arranged inside the motor stator along the axial direction, and both ends of the motor rotor shaft are rotatably mounted on the casing through magnetic bearings.

[0007] A ventilation channel is formed between the motor rotor and the motor stator. The motor rotor is provided with at least one impeller at both ends of the motor stator. When the motor rotor rotates, the impeller is driven to rotate synchronously, accelerating the gas from the air inlet to the ventilation channel and then passing through the motor rotor.

[0008] A plurality of first notches are provided on the casing along the circumferential direction. The first notches are connected to the motor rotor through the motor stator, so as to facilitate the discharge of air passing through the motor rotor out of the motor, thereby realizing air circulation and achieving the purpose of rapid heat dissipation and temperature reduction.

[0009] Optionally, an impeller is provided at each end of the motor rotor inside the motor stator.

[0010] Optionally, the two impellers are symmetrically arranged about the central axis of the motor rotor.

[0011] Optionally, the impeller has a plurality of blades evenly distributed along its circumference, and the blades are all inclined at the same angle.

[0012] Optionally, annular grooves are provided at both ends of the motor rotor inside the motor stator, and the two impellers are fixedly sleeved in the two annular grooves respectively.

[0013] Optionally, a magnetorheological elastomer is provided between the magnetic bearing and the rotating shaft of the motor rotor, and the magnetorheological elastomer is configured to buffer the stress of the motor rotor falling under high-speed rotation under the action of a magnetic field.

[0014] Optionally, the motor stator adopts a segmented structure, and the fault of the motor stator is connected to the first notch.

[0015] Optionally, a support member is provided at the lower end of the casing, the support member is in contact with the ground or other platforms, and the support member is configured to support the casing and internal components.

[0016] A magnetic levitation motor comprises any one of the above magnetic levitation motor internal cooling structures.

[0017] Compared with the prior art, this application has the following advantages:

[0018] 1) By fixing the impeller on the motor rotor, not only the enhanced air flow helps to take away the heat generated during the operation of the motor, thereby improving the heat dissipation efficiency, but also the impeller rotates synchronously with the motor, and no additional power is required to support the impeller rotation, thus saving energy consumption.

[0019] 2) The impeller is set in the annular groove of the motor rotor. On the one hand, the impeller is limited to prevent the impeller from separating from the motor rotor and damaging the structure; on the other hand, space is provided for the installation of the impeller between the motor rotor and the motor stator, thereby improving space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate and understand the technical solutions in the embodiments of the present application, a brief introduction is given below to the background technology of the present application and the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the content of the embodiments of the present application and these drawings without paying any creative work.

[0021] Figure 1 is a cross-sectional view of the internal cooling structure of the magnetic levitation motor provided in an embodiment of the present application;

[0022] Figure 2 1 is a side view of the rotor and impeller of the internal cooling structure of the magnetic levitation motor provided by an embodiment of the present application;

[0023] Figure 3This is a front view of the impeller of the cooling structure inside the magnetic levitation motor provided in an embodiment of the present application. DETAILED DESCRIPTION

[0024] To facilitate understanding of the present application, a more comprehensive description of the present application will be provided below with reference to the relevant drawings. Preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosure of the present application. It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there can also be a central component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there can also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by a person skilled in the art to which the present application belongs. The terms used herein in the specification of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the relevant listed items.

[0025] See also Figures 1 to 3 As shown, an embodiment of the present application provides an internal cooling structure for a magnetic levitation motor, which is used for a magnetic levitation motor, including a housing 10, a motor rotor 20, a motor stator 30 and at least one impeller 40, wherein:

[0026] The motor stator 30 is fixedly mounted on the inner side of the housing 10. The housing 10 is provided with air inlets 11 at both ends. The motor rotor 20 is arranged in the motor stator 30 along the axial direction. Both ends of the rotating shaft of the motor rotor 20 are rotatably mounted on the housing 10 through magnetic bearings.

[0027] A ventilation channel 21 is formed between the motor rotor 20 and the motor stator 30. The motor rotor 20 is provided with at least one impeller 40 at both ends of the motor stator 30. When the motor rotor 20 rotates, the impeller 40 is synchronously driven to rotate, accelerating the gas from the air inlet 11 to the ventilation channel 21 and then passing through the motor rotor 20.

[0028] The housing 10 is provided with a plurality of first notches 12 along the circumferential direction. The first notches 12 are connected to the motor rotor 20 through the motor stator 30, so as to facilitate the discharge of air passing through the motor rotor 20 out of the motor, thereby realizing air circulation and achieving the purpose of rapid heat dissipation and cooling.

[0029] By fixing the impeller 40 on the motor rotor 20, not only does the enhanced air flow help to remove the heat generated during the operation of the motor, thereby improving the heat dissipation efficiency, but the impeller 40 also rotates synchronously with the motor, and no additional power is required to support the rotation of the impeller 40, thereby saving energy consumption.

[0030] In one embodiment, an impeller 40 is provided at each end of the motor rotor 20 within the motor stator 30 .

[0031] By arranging the impellers 40 at both ends of the motor rotor 20, it is convenient for air at both ends to enter the interior of the motor, which accelerates the air circulation and further significantly improves the cooling efficiency inside the motor.

[0032] In one embodiment, the two impellers 40 are symmetrically arranged about the central axis of the motor rotor 20 .

[0033] By arranging the two impellers 40 symmetrically, it is ensured that when the motor rotor 20 drives the impellers 40 to rotate synchronously in the same direction, the impellers 40 transport the air from the two air inlets of the casing 10 into the interior of the motor, thereby ensuring the stability of heat dissipation in the motor.

[0034] In one embodiment, the impeller 40 has a plurality of blades 41 evenly distributed along its circumference, and the blades are all inclined at the same angle.

[0035] By setting the blades at the same inclination angle, it helps to maintain the dynamic balance of the impeller 40 during high-speed rotation, reduce vibration and noise caused by imbalance, and improve the stability of motor operation.

[0036] In one embodiment, the motor rotor 20 is provided with annular grooves 21 at both ends of the motor stator 30 , and the two impellers 40 are fixedly sleeved in the two annular grooves 21 respectively.

[0037] By setting the annular groove 2131, on the one hand, the impeller 40 mounted on the motor rotor 20 is limited to prevent the impeller 40 from separating from the motor rotor 20 and damaging the structure; on the other hand, space is provided for the installation of the impeller 40 between the motor rotor 20 and the motor stator 30, thereby improving space utilization.

[0038] In one embodiment, a magnetorheological elastomer 410 is provided between the magnetic bearing 41 and the rotating shaft of the motor rotor 20 . The magnetorheological elastomer 410 is configured to buffer the stress of the motor rotor 20 falling under high-speed rotation under the action of a magnetic field.

[0039] By providing the magnetorheological elastomer 410 between the magnetic bearing 41 and the rotating shaft of the motor rotor 20 , the working performance and durability of the magnetic levitation motor under high-speed rotation conditions are improved.

[0040] In one embodiment, the motor stator 30 adopts a segmented structure, and the fault 31 of the motor stator 30 is connected to the first notch 12 .

[0041] By setting the motor stator as a segmented structure to form a fault, the air passing through the motor bolt is discharged from the motor through the fault and the first gap, which not only facilitates the purpose of ventilation and heat dissipation but also has a simple structure.

[0042] In one embodiment, a support member 12 is provided at the lower end of the housing 10 , and the support member 12 is in contact with the ground or other platforms. The support member 12 is configured to support the housing 10 and internal components.

[0043] By arranging the support member 12 at the bottom of the housing 10, a solid foundation support is provided for the housing 10 and its internal components, thereby ensuring the stability of the motor during operation.

[0044] A magnetic levitation motor comprises any one of the above magnetic levitation motor internal cooling structures.

[0045] The above embodiments merely illustrate the basic principles and features of the present application. The present application is not limited by the above examples. Various changes and modifications may be made to the present application without departing from the spirit and scope of the present application. Such changes and modifications are intended to fall within the scope of the present application. The scope of protection claimed in the present application is defined by the appended claims and their equivalents.

Claims

1. A cooling structure inside a magnetic levitation motor, used for a magnetic levitation motor, characterized in that: The internal cooling structure of the magnetic levitation motor includes a housing, a motor rotor, a motor stator and at least one impeller, wherein: The motor stator is fixedly mounted on the inner side of the housing, air inlets are provided at both ends of the housing, the motor rotor is arranged inside the motor stator along the axial direction, and both ends of the rotating shaft of the motor rotor are rotatably mounted on the housing through magnetic bearings; A ventilation channel is formed between the motor rotor and the motor stator. The motor rotor is provided with at least one impeller at both ends of the motor stator. When the motor rotor rotates, the impeller is synchronously driven to rotate, thereby accelerating the gas from the air inlet to the ventilation channel and then passing through the motor rotor. The housing is provided with a plurality of first notches along the circumferential direction. The first notches are connected to the motor rotor through the motor stator, so as to facilitate the discharge of air passing through the motor rotor from the motor, thereby realizing air circulation and achieving the purpose of rapid heat dissipation and temperature reduction.

2. The internal cooling structure of the magnetic levitation motor according to claim 1, characterized in that: The motor rotor is provided with an impeller at both ends of the motor stator.

3. The internal cooling structure of the magnetic levitation motor according to claim 2, characterized in that: The two impellers are symmetrically arranged about the central axis of the motor rotor.

4. The internal cooling structure of the magnetic levitation motor according to claim 1, characterized in that: The impeller is evenly distributed with a plurality of blades along its circumference, and the blades are all inclined at the same angle.

5. The internal cooling structure of the magnetic levitation motor according to claim 1, characterized in that: The motor rotor is provided with annular grooves at both ends inside the motor stator, and the two impellers are fixedly sleeved in the two annular grooves respectively.

6. The internal cooling structure of the magnetic levitation motor according to claim 1, characterized in that: A magnetorheological elastomer is provided between the magnetic bearing and the rotating shaft of the motor rotor. The magnetorheological elastomer is configured to buffer the stress of the motor rotor falling during high-speed rotation under the action of a magnetic field.

7. The internal cooling structure of the magnetic levitation motor according to claim 1, characterized in that: The motor stator adopts a segmented structure, and the fault of the motor stator is connected to the first notch.

8. The internal cooling structure of the magnetic levitation motor according to claim 1, characterized in that: A support member is provided at the lower end of the casing, the support member contacts the ground, and is configured to support the casing and internal components.

9. A magnetic levitation motor, characterized in that: The magnetic levitation motor includes the magnetic levitation motor internal cooling structure according to any one of claims 1 to 8.

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