阅读说明：本技术 一种工业吊扇用内定子永磁电机 (Permanent magnet motor of inner stator for industrial ceiling fan ) 是由 陈世将 张军 刘炳林 于 2020-07-22 设计创作，主要内容包括：本发明涉及永磁电机技术领域,公开了一种工业吊扇用内定子永磁电机,包括包括内定子、外转子、转轴和端盖,内定子包括12个绕组线圈和由软磁硅钢材料制成的环形定子铁芯,环形定子铁芯的外侧表面均布着36个铁芯齿部,对应的铁芯轭部也设有36个；12个绕组线圈均为三项绕组线圈,饶制在环形定子铁芯上；转轴设置在环形定子铁芯的中心；环形定子铁芯与绕组线圈之间还设有绝缘纸；外转子为为金属圆筒,且该金属圆筒的内侧均布着60个永磁体,环形定子铁芯和外转子同轴设置；还包括中心安装轴,环形定子铁芯套设于中心安装轴外,所述端盖通过法兰板安装于外转子的两端,在达到普通低转速大扭矩硬刺直驱电机的性能要求的前提下,大幅降低了电机本体的体积和重要,同时也解决了中高速电机加减速器这种非直驱模式存在的效率低下的问题。(The invention relates to the technical field of permanent magnet motors, and discloses an inner stator permanent magnet motor for an industrial ceiling fan, which comprises an inner stator, an outer rotor, a rotating shaft and an end cover, wherein the inner stator comprises 12 winding coils and an annular stator core made of soft magnetic silicon steel material, 36 core tooth parts are uniformly distributed on the outer side surface of the annular stator core, and 36 corresponding core yoke parts are also arranged; the 12 winding coils are all three winding coils and wound on the annular stator core; the rotating shaft is arranged in the center of the annular stator core; insulating paper is arranged between the annular stator core and the winding coil; the outer rotor is a metal cylinder, 60 permanent magnets are uniformly distributed on the inner side of the metal cylinder, and the annular stator core and the outer rotor are coaxially arranged; the motor is characterized by further comprising a center mounting shaft, wherein the annular stator core is sleeved outside the center mounting shaft, the end covers are mounted at two ends of the outer rotor through flange plates, the size and the importance of the motor body are greatly reduced on the premise that the performance requirements of a common low-rotation-speed and high-torque direct-drive motor are met, and the problem of low efficiency of a medium-high-speed motor and a speed reducer which are in a non-direct-drive mode is solved.)

1. An inner stator permanent magnet motor for an industrial ceiling fan comprises an inner stator, an outer rotor, a rotating shaft and an end cover, and is characterized in that the inner stator comprises 12 winding coils and an annular stator core made of soft magnetic silicon steel material, 36 core tooth parts are uniformly distributed on the outer side surface of the annular stator core, and 36 corresponding core yoke parts are also arranged; the 12 winding coils are all three winding coils and wound on the annular stator core; the rotating shaft is arranged in the center of the annular stator core; insulation paper is arranged between the annular stator core and the winding coil; the outer rotor is a metal cylinder, 60 permanent magnets are uniformly distributed on the inner side of the metal cylinder, and the annular stator core and the outer rotor are coaxially arranged; the annular stator core is sleeved outside the central mounting shaft, and the end covers are mounted at two ends of the outer rotor through flange plates.

2. The permanent magnet motor of claim 1, wherein a ratio of a tooth width of the core to a yoke width of the core is η, and wherein η ≦ 0.45 ≦ η ≦ 0.55.

3. The permanent magnet motor of claim 2, wherein η is 0.5.

4. The permanent magnet motor of the inner stator for the industrial ceiling fan as claimed in claim 1, wherein the outer rotor comprises an aluminum housing and permanent magnet electrodes disposed inside the aluminum housing, a limiting block is disposed between every two adjacent permanent magnets of the 60 permanent magnets, the limiting block is provided with a plurality of screw holes, the limiting block is fixed to the aluminum housing by screws, and the permanent magnets are clamped between the limiting blocks.

5. The permanent magnet motor of claim 4, wherein the permanent magnets are made of strong permanent magnet material, the magnetic field direction is radial, and the magnetic field direction of adjacent permanent magnets is opposite.

6. The permanent magnet motor of claim 1, wherein the winding coil has a span of 3 core teeth between the inlet end and the outlet end.

7. The permanent magnet motor of claim 4, wherein the shaft is provided with a blind hole at the axial center of the shaft body outside the aluminum housing, and a long through hole at the side of the shaft, and the wire inlet end and the wire outlet end of the winding coil are routed through the blind hole and the long through hole.

Technical Field

The invention relates to the technical field of permanent magnet motors, in particular to an inner stator permanent magnet motor for an industrial ceiling fan.

Background

In recent years, the requirements for environmental protection and quality have been increasingly raised. The industrial ceiling fan has the advantages of large air quantity, soft wind power, long service life, energy conservation, consumption reduction, silence, environmental protection, no occupation of the ground and the like, gradually replaces the traditional vertical fan in large-scale public buildings such as steel-structure plants, logistics warehouses, distribution centers, farms, markets, gymnasiums, stations, airports and the like, and becomes an ideal choice for ventilating, cooling and expelling damp and heat in indoor environment.

The power system of the current industrial ceiling fan has two technical routes: one is a medium-high speed motor plus gear reduction type, and has the advantages of smaller volume and weight of the system and low cost, and has the disadvantages of lower working efficiency and need of regular maintenance; the motor directly drives the fan blades to rotate, and has the advantages of maintenance free, low noise, higher efficiency, large motor size, heavy weight and high cost.

Disclosure of Invention

Technical problem to be solved

The embodiment of the invention provides a permanent magnet motor for an industrial ceiling fan, which greatly reduces the volume and the importance of a motor body on the premise of meeting the performance requirements of a common low-rotation-speed and high-torque hard thorn direct drive motor, and simultaneously solves the problem of low efficiency of a non-direct drive mode of a medium-high speed motor and a speed reducer.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of an inner stator permanent magnet motor for an industrial ceiling fan according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an inner stator permanent magnet motor for an industrial ceiling fan according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an outer rotor of an inner stator permanent magnet motor for an industrial ceiling fan in an embodiment of the invention.

Description of reference numerals:

1: an inner stator; 2: an outer rotor; 3: a rotating shaft;

4: an end cap; 11: an annular stator core; 12: an iron core tooth part;

13: an iron core yoke portion; 21: a housing; 22: a permanent magnet;

31: blind holes; 32: a long through hole; 4. winding coil

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.

In the description of the embodiments of the present invention, it should be noted that the terms "first", "second" and "third" are used for the sake of clarity in describing the numbering of the components of the product and do not represent any substantial difference, unless explicitly stated or limited otherwise. The directions of "up", "down", "left" and "right" are all based on the directions shown in the attached drawings. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

It is to be understood that, unless otherwise expressly specified or limited, the term "coupled" is used broadly, and may, for example, refer to directly coupled devices or indirectly coupled devices through intervening media. Specific meanings of the above terms in the embodiments of the invention will be understood to those of ordinary skill in the art in specific cases.

Fig. 1 is a permanent magnet motor of an inner stator 1 for an industrial ceiling fan in an embodiment of the present invention, which includes an inner stator 1, an outer rotor 2, a rotating shaft 3 and an end cover 4, where the inner stator 1 includes 12 winding coils 4 and an annular stator core 11 made of soft magnetic silicon steel material, 36 core tooth portions 12 are uniformly distributed on the outer surface of the annular stator core 11, 36 corresponding core yoke portions 13 are also provided, and the ratio of the width of each core tooth portion 12 to the width of each core yoke portion 13 is η ═ 0.5; the 12 winding coils 4 are all three winding coils 4 wound on the annular stator iron core 11, and the span of the wire inlet end and the wire outlet end of each winding coil 4 is 3 iron core tooth parts 12; the rotating shaft 3 is arranged in the center of the annular stator core 11; insulation paper is arranged between the annular stator core 11 and the winding coil 4; the outer rotor 2 is a metal cylinder, 60 permanent magnets 22 are uniformly distributed on the inner side of the metal cylinder, and the annular stator core 11 and the outer rotor 2 are coaxially arranged; the stator further comprises a center mounting shaft, the annular stator core 11 is sleeved outside the center mounting shaft, and the end covers 4 are mounted at two ends of the outer rotor 2 through flange plates.

Preferably, outer rotor 2 includes aluminium system shell 21 and sets up in the inboard permanent magnet 22 electrode of aluminium system shell 21, and permanent magnet 22 is made by strong permanent magnetic material, and the magnetic field direction is radial, and adjacent permanent magnet 22's magnetic field opposite direction all is equipped with the stopper between every adjacent two in 60 permanent magnet 22, and the stopper is equipped with a plurality of screw holes, and the stopper passes through fix with screw in aluminium system shell 21, and permanent magnet 22 joint is between the stopper.

In order to make the winding more beautiful and convenient, a blind hole 31 is formed in the axis position of the shaft body of the rotating shaft 3 outside the aluminum shell 21, a long through hole 32 is further formed in the side surface of the shaft, and the wire inlet end and the wire outlet end of the winding coil 4 are both routed through the blind hole 31 and the long through hole 32.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.