CN112648290A

CN112648290A - Magnetic suspension bearing stator module and magnetic suspension motor with same

Info

Publication number: CN112648290A
Application number: CN202011589370.5A
Authority: CN
Inventors: 龚高; 张芳; 张超; 董如昊
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-04-13
Also published as: WO2022142318A1

Abstract

The invention provides a magnetic suspension bearing stator assembly and a magnetic suspension motor with the same, wherein the magnetic suspension bearing stator assembly comprises: the magnetic conduction ring and the magnetic steel are located on one side of the radial ring, the iron core is partially arranged in the radial ring, a plastic package cavity is formed among the magnetic conduction ring, the magnetic steel, the radial ring and the iron core, an avoiding hole is formed in the middle of the iron core, the plastic package cavity is located on the periphery of the avoiding hole, and plastic package glue is filled in the plastic package cavity. Through the technical scheme that this application provided, can solve among the prior art the fixed not firm problem of stator module internals.

Description

Magnetic suspension bearing stator module and magnetic suspension motor with same

Technical Field

The invention relates to the technical field of magnetic suspension bearings, in particular to a magnetic suspension bearing stator assembly and a magnetic suspension motor with the same.

Background

Currently, as shown in fig. 1 and fig. 2, a conventional magnetic suspension bearing stator assembly includes a magnetic conductive ring 1, a fixing frame, a magnetic steel 2, a coil 3, a radial ring 4, and an iron core 5. When the magnetic steel is installed, the position of the magnetic steel 2 is fixed by the fixing frame, and then the magnetic steel 2 is respectively connected with the magnetic conduction ring 1 and the radial ring 4 through bonding. In the use, probably can make the bonding inefficacy when the motor is in the abominable operational environment such as impact, vibrations, lead to the magnet steel to drop, perhaps lead to magnetic ring and radial ring to take place to separate, and then lead to the motor can not normally work.

Disclosure of Invention

The invention provides a magnetic suspension bearing stator assembly and a magnetic suspension motor with the same, and aims to solve the problem that in the prior art, internal parts of the stator assembly are not firmly fixed.

In one aspect of the invention, there is provided a magnetic bearing stator assembly comprising: the magnetic conduction ring and the magnetic steel are located on one side of the radial ring, the iron core is partially arranged in the radial ring, a plastic package cavity is formed among the magnetic conduction ring, the magnetic steel, the radial ring and the iron core, an avoiding hole is formed in the middle of the iron core, the plastic package cavity is located on the periphery of the avoiding hole, and plastic package glue is filled in the plastic package cavity.

Furthermore, the magnetic steel is positioned between the magnetic conductive ring and the radial ring, and plastic sealing glue is arranged between the magnetic steel and the magnetic conductive ring and between the magnetic steel and the radial ring.

Further, the magnetic bearing stator assembly further comprises: the magnetic steel is arranged on the fixing frame, and the fixing frame is fixed between the magnetic conduction ring and the radial ring through plastic sealing glue.

Furthermore, a plastic sealant is arranged between the magnetic conduction ring and the radial ring.

Furthermore, a plastic sealant is arranged between the iron core and the radial ring.

Further, the magnetic bearing stator assembly further comprises: and the coil is arranged on the iron core, and plastic sealant is arranged between the coil and the iron core.

Furthermore, the iron core is provided with a coil groove and a through hole, and the coil groove and the through hole are filled with plastic sealant.

Furthermore, the iron core is provided with an inner side face and an outer side face which are arranged oppositely, and the plastic package glue penetrates through the coil slot and the through hole and is arranged on the inner side face and the outer side face.

Further, the iron core includes a plurality of iron core units, and a plurality of iron core units set up in radial ring along annular interval, all are provided with the molding compound between two adjacent iron core units, between iron core unit and the radial ring.

In another aspect of the invention, a magnetic levitation motor is provided that includes the magnetic levitation bearing stator assembly provided above.

By applying the technical scheme of the invention, the magnetic suspension bearing stator assembly comprises the magnetic conduction rings, the magnetic steel, the radial rings and the iron core, wherein plastic package cavities are arranged among the magnetic conduction rings, the magnetic steel, the radial rings and the iron core, and the plastic package cavities are filled with the injection molding glue to fix the magnetic conduction rings, the magnetic steel, the radial rings and the iron core together through the plastic package glue, so that the related components can be connected and fixed through the plastic package glue.

Drawings

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

figure 1 shows a front view of a magnetic bearing stator assembly provided according to the prior art;

FIG. 2 shows a cross-sectional view at A-A in FIG. 1;

FIG. 3 illustrates an exploded view of a magnetic bearing stator assembly provided in accordance with an embodiment of the present invention;

FIG. 4 illustrates a front view of a magnetic bearing stator assembly provided in accordance with an embodiment of the present invention;

FIG. 5 shows a cross-sectional view at B-B in FIG. 4;

FIG. 6 shows a cross-sectional view at C-C in FIG. 4;

figure 7 shows an exploded view of a magnetic bearing stator assembly provided in accordance with yet another embodiment of the present invention.

Wherein the figures include the following reference numerals:

1. a magnetic conductive ring; 2. magnetic steel; 3. a coil; 4. a radial ring; 5. an iron core;

10. a magnetic conductive ring; 20. magnetic steel; 30. a radial ring;

40. an iron core; 41. avoiding holes; 42. a coil slot; 43. a through hole; 44. an iron core unit;

50. molding and sealing glue; 60. a fixed mount; 70. and a coil.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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 invention.

As shown in fig. 3 to 6, an embodiment of the present application provides a magnetic bearing stator assembly, including: the magnetic ring 10 and the magnetic steel 20 are positioned on one side of the radial ring 30, the iron core 40 is partially arranged in the radial ring 30, and the iron core 40 is positioned on the other side of the radial ring 30. A plastic package cavity is formed among the magnetic conductive ring 10, the magnetic steel 20, the radial ring 30 and the iron core 40, and the middle part of the iron core 40 is provided with an avoiding hole 41, and the avoiding hole 41 is used for penetrating through the rotor. The plastic packaging cavity is located on the periphery of the avoiding hole 41, and plastic packaging glue 50 is filled in the plastic packaging cavity. Through the structure, the plastic sealing glue 50 can be used for well fixing each part of the stator assembly, so that the connection among the parts is enhanced, and the condition that the stator assembly shakes or fails in connection in the using process is avoided.

Through the technical scheme provided by the application, the magnetic suspension bearing stator assembly comprises a magnetic conduction ring 10, magnetic steel 20, a radial ring 30 and an iron core 40. Wherein, be provided with the plastic envelope chamber between magnetic ring 10, magnet steel 20, radial ring 30 and iron core 40, and the encapsulating glue 50 of pouring in the plastic envelope intracavity, can be in the same place magnetic ring 10, magnet steel 20, radial ring 30 and iron core 40 are fixed through plastic envelope glue 50 like this, make between the relevant part all can connect fixedly through plastic envelope glue 50, so set up the steadiness that can improve between the inside spare part of device, the life of device has been prolonged, and above-mentioned process structure is simple, and the processing of being convenient for.

The plastic package adhesive 50 can be made of epoxy resin materials, has insulating property, heat resistance, corrosion resistance and good heat conduction performance, can fix components, and can improve the heat dissipation performance of the whole device and ensure the normal operation of the device.

Specifically, the magnetic steel 20 is located between the magnetic conductive ring 10 and the radial ring 30, the magnetic steel 20 is clamped between the magnetic conductive ring 10 and the radial ring 30, and the molding compound 50 may be disposed between the magnetic steel 20 and the magnetic conductive ring 10, and between the magnetic steel 20 and the radial ring 30. Can make magnet steel 20 stabilize between magnetic ring 10 and radial ring 30 like this, through above-mentioned fixed mode, can save to increase the mount in the current design and fix magnet steel 20, play the effect of simplifying the device structure when fixed magnet steel.

Of course, the fixing frame 60 may be additionally provided in the apparatus, and the position of the magnetic steel 20 on the magnetic conductive ring 10 and the radial ring 30 may be conveniently located and fixed by the fixing frame 60, specifically, the magnetic steel 20 is disposed on the fixing frame 60, and the fixing frame 60 is fixed between the magnetic conductive ring 10 and the radial ring 30 by the molding compound 50. So can fix a position, make magnet steel 20, magnetic ring 10 and radial ring 30 coaxial setting fast magnet steel 20 to, can strengthen the fixed action to magnet steel 20, further improve magnet steel 20's stability.

Specifically, the molding compound 50 is also disposed between the magnetic conductive ring 10 and the radial ring 30, so that the magnetic conductive ring 10 and the radial ring 30 can be directly fixed by the molding compound 50, and the magnetic conductive ring 10 and the radial ring 30 can be stably fixed together, so that the magnetic conductive ring 10, the magnetic steel 20, and the radial ring 30 form an integral structure by the molding compound 50. Compared with the mode that the magnetic conduction ring 10 and the radial ring 30 are only bonded together through the magnetic steel 20 in the prior art, the fixing effect and the stability are better.

In the present embodiment, a molding compound 50 is also disposed between the core 40 and the radial ring 30. Fix iron core 40 and radial ring 30 through plastic sealing glue 50, compare in current design iron core 40 and radial ring 30 through interference fit's fixed mode, its convenient processing, machining efficiency is higher, and iron core 40 is fixed more firmly with radial ring 30.

Specifically, this magnetic suspension bearing stator module still includes coil 70, coil 70 sets up on iron core 40, be provided with plastic envelope glue 50 between coil 70 and the iron core 40, can play the fixed action to coil 70 through setting up plastic envelope glue 50, and, can make during plastic envelope glue 50 fully permeates coil 70, make the air replacement that exists between the original coil for solid-state colloid, can strengthen coil 70's insulating ability like this, prevent that the insulating layer on coil 70 surface from being punctured, the heat conductivility has been improved greatly simultaneously, the heat-sinking capability has been strengthened.

The iron core 40 is provided with a coil groove 42 and a through hole 43, the coil 70 is arranged in the coil groove 42, and the coil groove 42 and the through hole 43 are filled with the plastic package glue 50, so that the whole stator assembly can be plastic-packaged, the fixing effect can be further improved, and each internal part can be of an integral structure.

Fig. 5 and 6 show a sectional view at the coil slot 42 and a sectional view at the through hole 43, respectively, in the present embodiment, the core 40 has oppositely disposed inner and outer sides, and the molding compound 50 is disposed on the inner and outer sides through the coil slot 42 and the through hole 43. With the arrangement, the iron core 40 and the coil 70 can be clamped by the inner and outer plastic seals 50, so that the fixing effect is further improved.

According to the technical scheme provided by the application, the plastic sealant 50 is used for fixing the interior of the stator assembly, so that the overall structural strength and the shock resistance are improved, and the system reliability is improved; the electrical safety performance of the coil is enhanced, so that the coil can work in a more severe environment; the stator assembly is integrated, so that the integral heat dissipation performance is enhanced; the number of parts is reduced, and the processing cost is reduced.

In another embodiment provided by the present application, as shown in fig. 7, the core 40 includes a plurality of core units 44, the plurality of core units 44 are disposed in the radial ring 30 at intervals along a ring shape, and the molding compound 50 is disposed between two adjacent core units 44 and between the core units 44 and the radial ring 30. The iron core 40 is fixed by the molding compound 50, so that the iron core 40 can be divided into several independent iron core units 44, the iron core 40 does not need to be manufactured into an integral structure, and the structure of the iron core 40 is diversified. In the embodiment, the iron core 40 is manufactured in blocks, the coil 70 is wound and then integrally mounted on the radial ring 30, and after assembly, plastic package adhesive filling is completed according to the scheme, so that mechanical automatic winding can be conveniently realized; the die opening size of the iron core is reduced, and the die opening cost is reduced; and, iron core 40 and radial ring 30 can use and adopt clearance fit to assemble, can save the hot-assembling technology, reduce the assembly degree of difficulty.

In another embodiment provided by the present application, a magnetic levitation motor is provided that includes the magnetic levitation bearing stator assembly provided by the above-described embodiments.

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

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

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

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

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

Claims

1. A magnetic bearing stator assembly, comprising:

magnetic ring (10), magnet steel (20), radial ring (30) and iron core (40), magnetic ring (10) and magnet steel (20) are located one side of radial ring (30), iron core (40) part set up in radial ring (30), magnetic ring (10) magnet steel (20), radial ring (30) with be formed with the plastic envelope chamber between iron core (40), iron core (40) middle part has dodges hole (41), the plastic envelope chamber is located dodge the periphery of hole (41), the plastic envelope intracavity packing has plastic envelope glue (50).

2. The magnetic suspension bearing stator assembly according to claim 1, characterized in that the magnetic steel (20) is located between the magnetic conductive ring (10) and the radial ring (30), and the molding compound (50) is disposed between the magnetic steel (20) and the magnetic conductive ring (10) and between the magnetic steel (20) and the radial ring (30).

3. The magnetic bearing stator assembly of claim 1, further comprising:

the magnetic steel (20) is arranged on the fixing frame (60), and the fixing frame (60) is fixed between the magnetic conduction ring (10) and the radial ring (30) through the plastic sealing glue (50).

4. The magnetic bearing stator assembly according to claim 1, characterized in that the molding compound (50) is arranged between the magnetically conductive ring (10) and the radial ring (30).

5. The magnetic bearing stator assembly according to claim 1, characterized in that the molding compound (50) is arranged between the core (40) and the radial ring (30).

6. The magnetic bearing stator assembly of claim 1, further comprising:

the coil (70) is arranged on the iron core (40), and the plastic sealant (50) is arranged between the coil (70) and the iron core (40).

7. The magnetic bearing stator assembly according to claim 1, characterized in that the core (40) has a coil slot (42) and a through hole (43), the coil slot (42) and the through hole (43) being filled with the molding compound (50).

8. The magnetic suspension bearing stator assembly of claim 7, characterized in that the core (40) has oppositely disposed inner and outer sides, the molding compound (50) being disposed on the inner and outer sides through the coil slots (42) and the through holes (43).

9. The magnetic suspension bearing stator assembly according to claim 1, characterized in that the core (40) comprises a plurality of core units (44), the plurality of core units (44) are arranged in the radial ring (30) along an annular interval, and the molding compound (50) is arranged between two adjacent core units (44) and between the core units (44) and the radial ring (30).

10. A magnetically levitated motor, characterized in that it comprises a magnetically levitated bearing stator assembly according to any of claims 1 to 9.