WO2022142318A1 - Ensemble stator de palier à suspension magnétique et moteur à suspension magnétique présentant ce dernier - Google Patents

Ensemble stator de palier à suspension magnétique et moteur à suspension magnétique présentant ce dernier Download PDF

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Publication number
WO2022142318A1
WO2022142318A1 PCT/CN2021/109441 CN2021109441W WO2022142318A1 WO 2022142318 A1 WO2022142318 A1 WO 2022142318A1 CN 2021109441 W CN2021109441 W CN 2021109441W WO 2022142318 A1 WO2022142318 A1 WO 2022142318A1
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WO
WIPO (PCT)
Prior art keywords
iron core
magnetic
stator assembly
ring
bearing stator
Prior art date
Application number
PCT/CN2021/109441
Other languages
English (en)
Chinese (zh)
Inventor
龚高
张芳
张超
董如昊
Original Assignee
珠海格力电器股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 珠海格力电器股份有限公司 filed Critical 珠海格力电器股份有限公司
Publication of WO2022142318A1 publication Critical patent/WO2022142318A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0459—Details of the magnetic circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/09—Structural association with bearings with magnetic bearings

Definitions

  • the present application relates to the technical field of magnetic suspension bearings, and in particular, to a magnetic suspension bearing stator assembly and a magnetic suspension motor having the same.
  • the magnetic suspension bearing stator assembly of the related art includes a magnetic permeable ring 1 , a fixed frame, a permanent magnet 2 , a coil 3 , a radial ring 4 and an iron core 5 .
  • the position of the permanent magnet 2 is fixed by a fixing frame, and then the permanent magnet 2 is connected to the magnetic conducting ring 1 and the radial ring 4 respectively by bonding.
  • the bonding may fail, causing the permanent magnet to fall off, or cause the magnetic ring to separate from the radial ring, thereby causing the motor to fail to work normally.
  • the present application provides a magnetic levitation bearing stator assembly and a magnetic levitation motor having the same, so as to solve the problem that the internal parts of the stator assembly are not securely fixed.
  • a magnetic suspension bearing stator assembly in one aspect of the present application, includes: a magnetically permeable ring, a permanent magnet, a radial ring and an iron core, and the magnetically permeable ring and the permanent magnet are located on one side of the radial ring,
  • the iron core part is arranged in the radial ring, a plastic sealing cavity is formed between the magnetic conducting ring, the permanent magnet, the radial ring and the iron core, the middle of the iron core has an escape hole, the plastic sealing cavity is located on the outer periphery of the escape hole, and the plastic sealing cavity is filled with Plastic sealant.
  • the permanent magnet is located between the magnetic conducting ring and the radial ring, and plastic sealing glue is provided between the permanent magnet and the magnetic conducting ring and between the permanent magnet and the radial ring.
  • the magnetic suspension bearing stator assembly further includes: a fixing frame, the permanent magnet is arranged on the fixing frame, and the fixing frame is fixed between the magnetic conducting ring and the radial ring by plastic sealing glue.
  • the fixing frame is an annular structure, and has grooves in the circumferential direction corresponding to the shape and number of the permanent magnets.
  • the permanent magnet is arranged in the groove, and the plastic sealant is arranged between the permanent magnet and the fixing frame.
  • a plastic sealing compound is arranged between the magnetic conducting ring and the radial ring.
  • a plastic sealant is arranged between the iron core and the radial ring.
  • the magnetic suspension bearing stator assembly further includes: a coil, which is arranged on the iron core, and a plastic sealant is arranged between the coil and the iron core.
  • the iron core has a coil slot and a through hole, the coil is arranged in the coil slot, and the coil slot and the through hole are filled with plastic sealant.
  • the iron core has a first surface and a second surface disposed opposite to each other in the axial direction, and the plastic sealant penetrates the coil slot and the through hole and is disposed on the first surface and the second surface.
  • the first surface and the second surface of the iron core, as well as the coil slot and the plastic sealant in the through hole form an integral structure, and the iron core and the coil are inlaid in the plastic sealant.
  • the iron core includes a plurality of iron core units, and the plurality of iron core units are arranged in the radial ring at intervals along the circumferential direction, and are arranged between two adjacent iron core units and between the iron core unit and the radial ring.
  • plastic sealant With plastic sealant.
  • the material of the plastic sealant is epoxy resin.
  • a magnetic suspension motor in another aspect of the present application, includes the magnetic suspension bearing stator assembly provided above.
  • the magnetic suspension bearing stator assembly includes a magnetic conducting ring, a permanent magnet, a radial ring and an iron core, wherein a plastic sealing cavity is arranged between the magnetic conducting ring, the permanent magnet, the radial ring and the iron core, And pour the plastic sealing compound into the plastic sealing cavity to fix the magnetic conductive ring, the permanent magnet, the radial ring and the iron core together by the plastic sealing compound, so that the related parts can be connected and fixed by the plastic sealing compound, so the setting can improve the magnetic suspension.
  • the stability between the internal parts of the bearing stator assembly prolongs the service life of the motor, and the above-mentioned process has a simple structure and is easy to process.
  • FIG. 1 shows a front view of a magnetic bearing stator assembly provided according to the related art.
  • FIG. 2 shows a cross-sectional view along line A-A of FIG. 1 .
  • FIG. 3 shows an exploded view of a magnetic suspension bearing stator assembly provided according to an embodiment of the present application.
  • FIG. 4 shows a front view of a magnetic suspension bearing stator assembly provided according to an embodiment of the present application.
  • FIG. 5 shows a cross-sectional view along the line B-B in FIG. 4 .
  • FIG. 6 shows a cross-sectional view taken along line C-C in FIG. 4 .
  • FIG. 7 shows an exploded view of a magnetic suspension bearing stator assembly provided according to yet another embodiment of the present application.
  • drawings include the following reference signs: 1, magnetic conductive ring; 2, permanent magnet; 3, coil; 4, radial ring; 5, iron core; 10, magnetic conductive ring; 20, permanent magnet; 30, Radial ring; 40, iron core; 41, avoidance hole; 42, coil slot; 43, through hole; 44, iron core unit; 50, plastic sealant; 60, fixing frame; 70, coil.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with “first”, “second” may expressly or implicitly include at least one of that feature.
  • plurality means at least two, such as two, three, etc., unless expressly and specifically defined otherwise.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between the two elements, unless otherwise specified limit.
  • installed may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between the two elements, unless otherwise specified limit.
  • a first feature "on” or “under” a second feature may be in direct contact with the first and second features, or the first and second features indirectly through an intermediary touch.
  • the first feature being “above”, “over” and “above” the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature being “below”, “below” and “below” the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.
  • an embodiment of the present application provides a magnetic suspension bearing stator assembly.
  • the magnetic suspension bearing stator assembly includes a magnetically conductive ring 10 , a permanent magnet 20 , a radial ring 30 and an iron core 40 .
  • the magnetic permeable ring 10 and the permanent magnets 20 are located on one side of the radial ring 30 .
  • the iron core 40 is partially disposed in the radial ring 30 , and in the axial direction of the stator assembly, the iron core 40 is located on the other side of the radial ring 30 .
  • the permanent magnet 20 , the magnetic conducting ring 10 , the radial ring 30 and the iron core 40 are coaxially arranged.
  • a plastic sealing cavity is formed between the magnetic conducting ring 10 , the permanent magnet 20 , the radial ring 30 and the iron core 40 .
  • the iron core 40 has an escape hole 41 in the middle, and the escape hole 41 is used for passing the rotor.
  • the plastic sealing cavity is located at the outer periphery of the avoidance hole 41 , and the plastic sealing cavity is filled with the plastic sealing compound 50 . More specifically, the avoidance hole 41 runs through the entire stator assembly, and the plastic sealing cavity is jointly defined by the avoidance hole 41 , the magnetic conducting ring 10 , the permanent magnet 20 , the radial ring 30 and the iron core 40 .
  • the magnetic suspension bearing stator assembly includes a magnetic conductive ring 10 , a permanent magnet 20 , a radial ring 30 and an iron core 40 .
  • a plastic sealing cavity is arranged between the magnetic conductive ring 10 , the permanent magnet 20 , the radial ring 30 and the iron core 40 , and a plastic sealing compound 50 is poured into the plastic sealing cavity, so that the magnetic conductive ring 10 , the permanent magnet can be sealed by the plastic sealing compound 50 .
  • the radial ring 30 and the iron core 40 are fixed together, so that the related components can be connected and fixed by the plastic sealant 50.
  • This arrangement can improve the stability of the internal components of the stator assembly and prolong the service life of the motor. , and the above-mentioned process structure is simple and easy to process.
  • the plastic sealant 50 can be made of epoxy resin material, which has insulating properties, heat resistance and corrosion resistance, and good thermal conductivity, which can improve the overall heat dissipation performance of the stator assembly while fixing the components, and ensure the normal operation of the electrodes.
  • the permanent magnet 20 is located between the magnetic conducting ring 10 and the radial ring 30 . More specifically, the permanent magnets 20 are sandwiched between the magnetic conducting ring 10 and the radial ring 30 .
  • a plastic sealant 50 is disposed between the permanent magnet 20 and the magnetic conducting ring 10 and between the permanent magnet 20 and the radial ring 30 . In this way, the permanent magnet 20 can be stabilized between the magnetic conducting ring 10 and the radial ring 30 .
  • a fixing frame 60 can also be added to the stator assembly, and the position of the permanent magnet 20 on the magnetic conducting ring 10 and the radial ring 30 can be positioned and fixed by the fixing frame 60 .
  • the permanent magnet 20 is arranged on the fixing frame 60 , and the fixing frame 60 is fixed between the magnetic conducting ring 10 and the radial ring 30 through the plastic sealing glue 50 .
  • the permanent magnet 20 can be quickly positioned, so that the permanent magnet 20 , the magnetic conducting ring 10 and the radial ring 30 are coaxially arranged, and the fixing effect of the permanent magnet 20 can be strengthened, and the stability of the permanent magnet 20 can be further improved.
  • the fixing frame 60 is an annular structure, and has grooves corresponding to the shape and number of the permanent magnets 20 in the circumferential direction.
  • the permanent magnets 20 are arranged in the grooves to achieve positioning and fixing.
  • the permanent magnet 20 and the fixing frame 60 are arranged on the same plane, that is, the positions in the axial direction of the stator assembly are the same.
  • the plastic sealant ( 50 ) may be disposed between the permanent magnet 20 and the fixing frame 60 .
  • a plastic sealing compound 50 is also arranged between the magnetic conductive ring 10 and the radial ring 30, so that the magnetic sealing compound 50 can be used to directly fix the magnetic conductive ring 10 and the radial ring 30, so that the two can be stabilized.
  • the magnetic permeable ring 10 , the permanent magnets 20 and the radial ring 30 are formed into an integral structure by using the plastic sealant 50 .
  • the fixing effect and stability thereof are better.
  • a plastic sealant 50 is also disposed between the iron core 40 and the radial ring 30 .
  • the iron core 40 and the radial ring 30 are fixed by the plastic sealant 50.
  • the processing is convenient and the processing efficiency is higher. It is more firmly fixed with the radial ring 30 .
  • the magnetic suspension bearing stator assembly further includes a coil 70 .
  • the coil 70 is provided on the iron core 40 .
  • a plastic sealant 50 is disposed between the coil 70 and the iron core 40 .
  • the coil 70 can be fixed by providing the plastic sealant 50 .
  • the plastic encapsulant 50 can fully penetrate between the wires of the coil 70, so that the air existing between the wires of the original coil is replaced with solid colloid, which can enhance the insulating ability of the coil 70 and prevent the insulating layer on the surface of the coil 70 from being struck. wear, while greatly improving the thermal conductivity and enhancing the heat dissipation capacity.
  • the iron core 40 has a coil slot 42 and a through hole 43 .
  • the coil 70 is disposed within the coil slot 42 .
  • Filling the coil slot 42 and the through hole 43 with the plastic sealing compound 50 can plastic-encapsulate the entire stator assembly, which can further improve the fixing effect and make the internal components an integral structure.
  • the iron core 40 has a first surface and a second surface disposed opposite to each other in the axial direction, and the plastic sealant 50 penetrates the coil slot 42 and the through hole 43 and is disposed on the first surface and the second surface.
  • the iron core 40 and the coil 70 can be clamped by the inner and outer plastic sealants 50, so as to further improve the fixing effect.
  • the first surface and the second surface of the iron core 40 and the plastic sealant 50 in the coil slot 42 and the through hole 43 form an integral structure, and the iron core 40 and the coil 70 are embedded in the plastic sealant 50 .
  • the stator assembly is fixed with plastic sealant 50, which improves the overall structural strength and shock resistance, increases the reliability of the system, and enhances the electrical safety performance of the coil, enabling it to work in harsher conditions. environment; make the stator assembly as a whole, enhance the overall heat dissipation performance; reduce the number of parts and reduce the processing cost.
  • the iron core 40 includes a plurality of iron core units 44 .
  • a plurality of iron core units 44 are arranged in the radial ring 30 at intervals along the circumferential direction, and together constitute the iron core 40 .
  • a plastic sealant 50 is provided between two adjacent iron core units 44 and between the iron core units 44 and the radial ring 30 .
  • the plurality of core units 44 and the coils 70 are embedded in the plastic sealant 50 .
  • the iron core 40 is fixed by the plastic sealant 50 , so that the iron core 40 can be divided into several independent iron core units 44 , and it is not necessary to make the iron core 40 into an integral structure, thus diversifying the structure of the iron core 40 .
  • the iron core 40 is manufactured in blocks, and the coil 70 is wound and then installed on the radial ring 30 as a whole. After the assembly is completed, the filling of the plastic sealant is completed according to the aforementioned scheme.
  • This arrangement can facilitate the realization of mechanical automatic winding; The mold opening size of the iron core is reduced, and the mold opening cost is reduced; in addition, the iron core 40 and the radial ring 30 can be assembled by using a clearance fit, which can eliminate the hot charging process and reduce the difficulty of assembly.
  • a magnetic levitation motor in another embodiment provided by the present application, includes the magnetic levitation bearing stator assembly provided in the above embodiment.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

Ensemble stator de palier à suspension magnétique et moteur à suspension magnétique présentant ce dernier. L'ensemble stator de palier à suspension magnétique comprend : une bague conductrice magnétique (10), un aimant permanent (20), une bague radiale (30) et un noyau de fer (40). La bague conductrice magnétique (10) et l'aimant permanent (20) sont situés sur le côté de la bague radiale (30). Le noyau de fer (40) est partiellement disposé dans la bague radiale (30). Une cavité d'étanchéité en plastique est formée parmi la bague conductrice magnétique (10), l'aimant permanent (20), la bague radiale (30) et le noyau de fer (40). Un trou d'évitement (41) est fourni au milieu du noyau de fer (40). La cavité d'étanchéité en plastique est située sur la périphérie du trou d'évitement (41) et est remplie d'un agent d'étanchéité en plastique (50).
PCT/CN2021/109441 2020-12-28 2021-07-30 Ensemble stator de palier à suspension magnétique et moteur à suspension magnétique présentant ce dernier WO2022142318A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011589370.5 2020-12-28
CN202011589370.5A CN112648290A (zh) 2020-12-28 2020-12-28 磁悬浮轴承定子组件及具有其的磁悬浮电机

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WO2022142318A1 true WO2022142318A1 (fr) 2022-07-07

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112648290A (zh) * 2020-12-28 2021-04-13 珠海格力电器股份有限公司 磁悬浮轴承定子组件及具有其的磁悬浮电机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6201329B1 (en) * 1997-10-27 2001-03-13 Mohawk Innovative Technology, Inc. Pump having magnetic bearing for pumping blood and the like
CN101060263A (zh) * 2006-04-19 2007-10-24 煤炭科学研究总院上海分院 真空自动压力凝胶封装定子的方法
CN106369052A (zh) * 2016-10-24 2017-02-01 珠海格力节能环保制冷技术研究中心有限公司 磁悬浮轴承
CN107575475A (zh) * 2017-10-20 2018-01-12 珠海格力节能环保制冷技术研究中心有限公司 磁悬浮轴承定子组件封胶方法、封胶工装和磁悬浮轴承
CN207500339U (zh) * 2017-10-20 2018-06-15 珠海格力节能环保制冷技术研究中心有限公司 磁悬浮轴承定子组件封胶工装和磁悬浮轴承
CN108343671A (zh) * 2018-02-07 2018-07-31 苏州麦格奈迪磁悬浮技术有限公司 一种磁轴承组件制备工艺
CN112648290A (zh) * 2020-12-28 2021-04-13 珠海格力电器股份有限公司 磁悬浮轴承定子组件及具有其的磁悬浮电机

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6201329B1 (en) * 1997-10-27 2001-03-13 Mohawk Innovative Technology, Inc. Pump having magnetic bearing for pumping blood and the like
CN101060263A (zh) * 2006-04-19 2007-10-24 煤炭科学研究总院上海分院 真空自动压力凝胶封装定子的方法
CN106369052A (zh) * 2016-10-24 2017-02-01 珠海格力节能环保制冷技术研究中心有限公司 磁悬浮轴承
CN107575475A (zh) * 2017-10-20 2018-01-12 珠海格力节能环保制冷技术研究中心有限公司 磁悬浮轴承定子组件封胶方法、封胶工装和磁悬浮轴承
CN207500339U (zh) * 2017-10-20 2018-06-15 珠海格力节能环保制冷技术研究中心有限公司 磁悬浮轴承定子组件封胶工装和磁悬浮轴承
CN108343671A (zh) * 2018-02-07 2018-07-31 苏州麦格奈迪磁悬浮技术有限公司 一种磁轴承组件制备工艺
CN112648290A (zh) * 2020-12-28 2021-04-13 珠海格力电器股份有限公司 磁悬浮轴承定子组件及具有其的磁悬浮电机

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