CN112421813B

CN112421813B - Stator core, stator assembly, motor, food processor and air supply device

Info

Publication number: CN112421813B
Application number: CN201910786730.1A
Authority: CN
Inventors: 梁显堂; 陈炜杰; 王云峰; 陈连城; 刘锦泉
Original assignee: Guangdong Midea Consumer Electric Manufacturing Co Ltd
Current assignee: Guangdong Midea Consumer Electric Manufacturing Co Ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2022-09-09
Anticipated expiration: 2039-08-23
Also published as: CN112421813A

Abstract

The invention provides a stator core, a stator assembly, a motor, a food processor and an air supply device, wherein the stator core comprises a plurality of layers of punching sheets, a central through hole is enclosed by the plurality of layers of punching sheets, and the plurality of layers of punching sheets are radially and outwards distributed in a laminated manner on the central through hole. The stator core provided by the invention comprises the multiple layers of stamped sheets, and the multiple layers of stamped sheets are distributed in a stacking manner in the radial direction of the stator core, so that the magnetic resistance of the stator core can be effectively reduced, the magnetic loss is reduced, and the motor efficiency is further improved; the magnetic circuit of the stator core is shorter, the motor can be flatter and thinner, and the miniaturization of the motor can be realized.

Description

Stator core, stator assembly, motor, food processor and air supply device

Technical Field

The invention relates to the technical field of motors, in particular to a stator core, a stator assembly, a motor, a food processor and an air supply device.

Background

The stator core of the existing motor is of an axial laminated structure. The magnetic field passes through the teeth and yoke of the stator core and the rotor to form a magnetic field loop. The closed magnetic force line is necessarily curved, so that larger magnetic leakage and loss can occur.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art.

To this end, a first aspect of the invention provides a stator core.

A second aspect of the invention provides a stator assembly.

A third aspect of the invention provides an electric machine.

A fourth aspect of the invention provides a food processor.

A fifth aspect of the invention provides an air supply apparatus.

The invention provides a stator core, which comprises a plurality of layers of punching sheets, wherein the plurality of layers of punching sheets surround a central through hole, and the plurality of layers of punching sheets are radially and outwards distributed in a laminated manner in the central through hole.

The stator core provided by the invention comprises a plurality of layers of punching sheets, wherein the plurality of layers of punching sheets surround a central through hole and a central through hole, and the plurality of layers of punching sheets are radially and outwards distributed in a laminated manner in the radial direction of the central through hole. In the use process of the stator core, the magnetic induction lines radially penetrate through the stator core, and the extending direction of the multilayer punching sheets of the stator core is the same as the penetrating direction of the magnetic induction lines, so that the magnetic resistance of the stator core can be effectively reduced, the magnetic loss is reduced, and the motor efficiency is improved. Specifically, the stator core has a hollow columnar structure.

The stator core provided by the invention comprises a plurality of layers of stamped sheets, and the plurality of layers of stamped sheets are distributed in a stacking manner in the radial direction of the stator core, so that the magnetic resistance of the stator core can be effectively reduced, the magnetic loss is reduced, and the motor efficiency is further improved; the magnetic circuit of the stator core is shorter, the motor can be flatter and thinner, and the miniaturization of the motor can be realized. Specifically, the punching sheet can be a strip-shaped iron sheet.

The stator core according to the above technical solution of the present invention may further have the following additional technical features:

in the above technical solution, preferably, at least one end surface of the stator core is provided with a plurality of winding slots, and the plurality of winding slots penetrate from the outer surface of the stator core to the inside of the stator core until the plurality of winding slots are communicated with the central through hole.

In the technical scheme, one end or two ends of the stator core are provided with the plurality of winding slots, the winding slots are communicated from the outer surface of the stator core to the central through hole of the stator core to provide a placing position for matching with the stator winding, and the stator winding and the stator core are installed in an embedded mode, so that the size of a stator assembly can be effectively reduced, and the minimization of a motor is realized.

Specifically, when a winding slot is formed in one end surface of the stator core, a stator winding may be disposed at one end of the stator core; when the winding slots are formed at the two ends of the stator core, the stator windings can be arranged at the two ends of the stator core simultaneously.

In any of the above technical solutions, preferably, the plurality of winding slots are uniformly distributed along a circumferential direction of the stator core, and any two adjacent winding slots of the plurality of winding slots define one stator tooth.

In the technical scheme, the plurality of winding slots are uniformly distributed along the circumferential direction of the stator core, so that the stator windings in the winding slots are uniformly distributed on the stator core, and further, the uniform distribution of magnetic induction lines is ensured in the working process of the stator core, and the stable rotation of a rotor assembly matched with the stator core is ensured; and a stator tooth is defined by two adjacent winding slots together, and the stator winding can be wound on the stator tooth, so that the working efficiency of the stator assembly is ensured.

In any of the above technical solutions, preferably, the multi-layer stamped sheet is formed by rolling and stacking a stamped sheet from inside to outside along a spiral line.

In the technical scheme, the processing and manufacturing difficulty of the stator core is considered, and the multilayer punching sheet is formed by rolling and folding a punching sheet from inside to outside along a spiral line. In other words, in the process of processing and manufacturing the stator core, the final stator core can be obtained through convolution of one punching sheet, and the manufacturing process is simple so as to reduce the cost of the stator core. Specifically, the stator core is of a radial rolling structure, the stator core is formed by spirally rolling strip-shaped stamped steel, and the stamped steel can be strip-shaped iron sheets.

A second aspect of the invention provides a stator assembly comprising: an insulating section; and a stator core according to any one of the first aspect of the present invention, wherein the stator teeth of the stator core are provided with stator windings, and the insulation is at least partially located between the stator teeth and the stator windings.

The stator assembly according to the present invention comprises an insulation portion, a stator winding, and a stator core according to any one of the first aspect of the present invention, and therefore, all the advantages of the stator core are achieved, which are not discussed herein. Specifically, the stator core is disposed on the insulating portion.

The stator assembly according to the above technical solution of the present invention may further have the following additional technical features:

in above-mentioned technical scheme, preferably, the insulating part is insulating support, and insulating support includes: a support base; the avoiding notch is arranged on the bracket base; the winding support extends along the avoiding gap to the direction back from the support base, the winding support is sleeved on the stator teeth of the stator core, and the plurality of stator windings are arranged on the winding support respectively.

In any one of the above technical solutions, preferably, the stator core passes through the bracket base from the avoidance gap, and passes through at least a part of the clearance gap to extend into the winding bracket.

In this technical scheme, adopt insulating support to be insulating part, and insulating support includes support base, dodges breach and winding support. Wherein, be provided with on the support base and dodge the breach to extend through dodging the breach and form the winding support. In the process of installing the stator core, the stator teeth are arranged inside the winding support, and the stator winding is wound on the winding support. Through the above setting mode, on the one hand can guarantee that stator core stably sets up in insulating support, and on the other hand can be so that stator core and insulating support fastening connection reduce the holistic space volume of stator assembly, be favorable to realizing the motor minimizing.

Specifically, the stator core penetrates through the support base from the avoidance gap, and the stator teeth at least partially extend into the winding support. The installation process of the stator core is simple, and the stator core can be at least partially hidden on the inner wall of the insulating support, so that the axial length of the stator assembly is reduced, and the minimization of the stator assembly is realized.

Specifically, along the radial direction of the stator core, the stator core is formed by stacking and distributing a plurality of layers of punching sheets, and the stator winding is also arranged in the radial direction of the stator core. Through the limitation of the position relation, when the stator winding is electrically conducted, the magnetic circuit and the magnetic field on the rotor assembly form a linear loop along the axial direction, the magnetic circuit is minimized, and the loss formed by the curved magnetic circuit can be reduced.

In any one of the above technical solutions, preferably, one end of the winding support, which is away from the support base, is provided with a flanging structure, and the plurality of stator windings are located between the flanging structure and the support base.

In this technical scheme, the one end that the winding support deviates from the support base is provided with flange structure, and this flange structure constructs spacing space with support base and winding support jointly, and stator winding sets up in this spacing space to winding support setting can guarantee stator winding's stable installation, avoids stator winding to drop.

In any one of the above technical solutions, preferably, both end surfaces of the stator core are exposed to the insulating portion along an axial direction of the stator core.

In the technical scheme, along the axial direction of the stator core, the two opposite end faces of the stator core are exposed out of the insulating part, so that the effective work of the stator assembly is ensured.

In any of the above technical solutions, preferably, the insulating portion is an insulating coating.

In the technical scheme, an insulating bracket is not needed, only a common bracket is used, and the outer side surface of the common bracket is covered with an insulating coating. Through the mode, the requirement of the bracket on materials can be effectively reduced, and the bracket is convenient to process and manufacture.

A third aspect of the present invention provides an electric machine comprising: a housing; the rotor assembly is arranged in the shell; and the stator assembly of any one of the second aspect of the invention, the stator assembly is disposed in the housing and is capable of driving the rotor assembly to rotate.

The motor provided by the invention comprises a shell, and a stator assembly and a rotor assembly which are arranged in the shell, wherein the rotor assembly is driven to rotate by the stator assembly, and the stator assembly is an output torque. In particular, the motor employs a stator assembly according to any one of the second aspects of the present invention, and thus has all the benefits of any one of the above-described stator assemblies, which will not be discussed herein.

The motor according to the above technical solution of the present invention may further have the following additional technical features:

in the above technical solution, preferably, the rotor assembly includes: the rotary disc is arranged in the shell, a magnetic part is arranged on the rotary disc, and the rotary disc can rotate under the driving of the stator assembly.

In the technical scheme, the rotor assembly comprises a rotating disc, and a magnetic part is arranged in the rotating disc, so that the rotating disc and the stator assembly are matched for use. The turntable can rotate under the driving of the stator assembly, and further the output of the torque is ensured.

In any of the above solutions, preferably, the rotor assembly further includes: the rotating shaft penetrates through the turntable and the shell, and can rotate under the driving of the turntable.

In this technical scheme, the rotor assembly still includes the axis of rotation of wearing to locate carousel and casing, and wherein, axis of rotation and carousel be fixed connection, and the axis of rotation can rotate under the drive of carousel, and then drives the part rotation work that sets up in the axis of rotation. Specifically, a stirring blade or a fan blade assembly may be provided on the rotating shaft.

In any of the above technical solutions, preferably, the turntable is disposed on the accommodating portion, and the magnetic member is located in the accommodating portion; or the magnetic parts are multiple and are distributed at intervals along the circumferential direction of the turntable.

In this technical scheme, be provided with the portion of holding on the carousel to set up magnetic part in the portion of holding, in order to guarantee the steady drive of the stable installation of magnetic part and carousel. Specifically, the magnetic member may be of an integral structure, and one magnetic member is integrally disposed in the accommodating portion, and different positions of the integral magnetic member have different magnetic poles. The magnetic pieces are further provided with a plurality of magnetic pieces, one magnetic piece is arranged in each accommodating part, each magnetic piece is provided with a magnetic pole, and the magnetic pole matching relationship among the magnetic pieces is guaranteed.

In any of the above technical solutions, preferably, the turntable is a plastic turntable.

In this technical scheme, in order to alleviate the weight of carousel, promote the drive efficiency of stator assembly to rotor assembly, will adopt the plastics carousel to make the motor exportable maximum moment. That is to say, the invention reduces the weight of the turntable through the plastic turntable and ensures the magnetism of the turntable through the magnetic part.

In any of the above solutions, preferably, the rotor assembly is located in front of the stator assembly along the extending direction of the rotating shaft.

In this technical scheme, along the direction of stretching out of axis of rotation, set up the rotor assembly in the place ahead of stator assembly, can effectively avoid the structure of stator assembly and rotor assembly to interfere, guarantee the steady motion of motor, shorten the overall length of axis of rotation simultaneously, promote the stationarity of motor.

In any of the above technical solutions, preferably, the housing includes: a side plate; the first end cover is arranged at one end of the side plate, and the rotating shaft penetrates through the first end cover; and the second end cover is arranged at the other end of the side plate.

In this technical scheme, the casing comprises curb plate, first end cover and second end cover, and wherein, first end cover is located one side of curb plate to wear to locate first end cover with the axis of rotation, put forward the output of moment, the second end cover is located the other end of curb plate, guarantees the integrality of casing, avoids inner structure to expose.

In any of the above technical solutions, preferably, the method further includes: and the bearing assembly is sleeved on the rotating shaft and is positioned at the position where the rotating shaft is contacted with the first end cover and the second end cover.

In this technical scheme, the cover is equipped with bearing assembly on the axis of rotation to with the position of bearing assembly setting at first end cover and second end cover, guarantee that the axis of rotation is connected with the rotation of first end cover and second end cover, guarantee that the axis of rotation can rotate under the drive of carousel, with output torque.

A fourth aspect of the present invention provides a food processor comprising: the electric machine according to any one of the third aspects of the invention; and the stirring cutter is connected with the rotor assembly and can rotate under the drive of the rotor assembly.

The food processor provided by the invention comprises the motor according to any one of the third aspect of the invention, and the stirring cutter is arranged on the output shaft of the motor to cut and stir the food. Further, since it has the motor according to any one of the third aspects of the present invention, it has all the advantageous effects of the motor described above.

A fifth aspect of the present invention provides an air blowing device, including: an electric machine as claimed in any one of the third aspects of the invention; and the fan blade component is connected with the rotor assembly and can rotate under the driving of the rotor assembly.

The air supply device provided by the invention comprises the motor according to any one of the third aspect of the invention, and the fan blade assembly is arranged on the rotating disc of the motor so as to flow the driving air. Further, since it has the motor according to any one of the third aspects of the present invention, it has all the advantageous effects of the motor described above.

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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a stator core according to an embodiment of the present invention;

FIG. 2 is a top view of the stator core of the embodiment shown in FIG. 1;

fig. 3 is a schematic structural view of a stator core according to another embodiment of the present invention;

FIG. 4 is a schematic structural view of a stator assembly of one embodiment of the present invention;

FIG. 5 is a top view of the stator assembly of the embodiment shown in FIG. 4;

FIG. 6 is a schematic view of the structure of an insulating support in the stator assembly of the embodiment shown in FIG. 4;

FIG. 7 is a side view of the insulating support of the embodiment of FIG. 6;

FIG. 8 is a top view of the insulating support of the embodiment of FIG. 6;

FIG. 9 is an exploded view of a motor according to one embodiment of the present invention;

FIG. 10 is a schematic view of a rotor assembly of the electric machine of the embodiment of FIG. 9;

FIG. 11 is a bottom view of the rotor assembly of the embodiment shown in FIG. 10.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 11 is:

100 motor, 10 stator core, 102 punching sheet, 104 stator tooth, 106 winding slot, 108 central through hole, 20 stator assembly, 202 insulation support, 204 support base, 206 opening, 208 avoiding notch, 210 winding support, 212 stator winding, 214 flanging structure, 302 side plate, 304 first end cover, 306 second end cover, 40 rotor assembly, 402 turntable, 404 magnetic part and 406 rotating shaft.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention, taken in conjunction with the accompanying drawings and detailed description, is set forth below. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein and, therefore, the scope of the present invention is not limited by the specific embodiments disclosed below.

A stator core 10, a stator assembly 20, a motor 100, a food processor, and an air blowing device according to some embodiments of the present invention will be described with reference to fig. 1 to 11.

The first embodiment is as follows:

as shown in fig. 1 and fig. 2, a stator core 10 according to a first embodiment of the present invention includes a plurality of lamination sheets 102, where the lamination sheets 102 surround a central through hole 108, and the lamination sheets 102 are stacked and distributed radially outward of the central through hole 108.

Specifically, in the use process of the stator core 10, the magnetic induction lines radially penetrate through the stator core 10 from the stator core 10, and the extending direction of the multi-layer stamped sheets 102 of the stator core 10 provided by the invention is the same as the penetrating direction of the magnetic induction lines, so that the magnetic resistance of the stator core 10 can be effectively reduced, the magnetic loss is reduced, and the efficiency of the motor 100 is further improved. Specifically, the stator core 10 is a hollow cylindrical structure, and a central through hole 108 is formed in the center of the hollow cylindrical structure, and the central through hole 108 is used for placing the rotor assembly 40 used in cooperation therewith, so that the rotating shaft 406 of the rotor assembly 40 can be smoothly inserted.

Further, a plurality of winding slots 106 are uniformly arranged along the circumferential direction of the stator core 10, and the winding slots 106 penetrate through the side wall of the stator core 10 and are communicated with the central through hole 108, so that the stator winding 212 is stably installed in cooperation with the stator core 10; stator winding 212 evenly distributed in stator core 10, and then guarantee at stator core 10 course of operation, the evenly distributed of line is felt to the magnetism, guarantees the rotor assembly 40 steady rotation that uses with it, promotes the stability of motor 100.

Example two:

as shown in fig. 1 and 2, a first embodiment of the present invention provides a stator core 10, in which the stator core 10 is formed by winding a punching sheet 102 from inside to outside along a spiral line.

In this embodiment, in consideration of the difficulty in manufacturing the stator core 10, the multi-layer stamped steel 102 is formed by rolling one stamped steel 102 from inside to outside along a spiral line. That is, in the process of manufacturing the stator core 10, the final stator core 10 can be obtained by convolution of one punching sheet 102, and the manufacturing process is simple, so as to reduce the cost of the stator core 10. Specifically, the stator core 10 is a radial winding structure, the stator core 10 is formed by spirally winding strip-shaped stamped sheets, and the stamped sheet 102 may be a strip-shaped iron sheet.

Example three:

as shown in fig. 4 to 8, a third embodiment of the present invention provides a stator assembly 20 including: the stator core 10 according to any one of the first aspect of the present invention comprises an insulating portion, a plurality of stator windings 212, and the stator core 10, wherein the insulating portion is an insulating support 202, the stator core 10 is disposed on the insulating support 202, and an opening 206, an avoiding notch 208, and a winding support 210 are disposed on a support base 204 of the insulating support 202.

Specifically, as shown in fig. 6 to 8, the opening 206 ensures that the rotation shaft 406 can smoothly pass through the holder base 204; stator core 10 stretches into support base 204 from dodging breach 208 for stator tooth 104 of stator core 10 stretches into inside winding support 210, and the chassis of stator core 10 corresponds the setting with support base 204. Through the structural optimization of the insulating support 202, on one hand, the stable installation of the support base 204 and the stator core 10 can be ensured, and on the other hand, the space volume of the stator core 10 is reduced, so that the minimization of the motor 100 is realized.

In a specific embodiment, the winding slots 106 may be provided at one or both ends of the stator core 10. As shown in fig. 1, when the winding slot 106 is opened at one end surface of the stator core 10, a stator winding 212 may be disposed at one end of the stator core 10; as shown in fig. 3, when the winding slots 106 are opened at both ends of the stator core 10, the stator windings 212 may be simultaneously provided at both ends of the stator core 10.

In this embodiment, the insulating portion is directly provided as the insulating support 202. It will be appreciated by those skilled in the art that the insulation may also be provided with an insulating coating (not shown). That is to say, the outer edge surface of the common bracket is covered with the insulating coating, so that the requirement of the bracket on materials can be effectively reduced, and the common bracket is convenient to process and manufacture.

Example four:

as shown in fig. 4 to 8, a fourth embodiment of the present invention proposes a stator assembly 20 including: an insulating support 202, a stator winding 212 and a stator core 10 according to any one of the first aspect of the present invention, wherein the stator core 10 is disposed on the insulating support 202 and the stator winding 212 is located outside the stator core 10.

In this embodiment, as shown in fig. 4 and 5, the stator winding 212 is positioned in the winding slot 106 of the stator core 10 and is disposed corresponding to the stator teeth 104 of the stator core 10, so that the matching efficiency between the stator core 10 and the stator winding 212 is ensured. That is, stator teeth 104 are spaced from stator windings 212 by winding support 210.

The stator core 10 is formed by stacking and distributing the multiple layers of punching sheets 102 in the radial direction of the stator core 10, and the stator winding 212 is also arranged in the radial direction of the stator core 10. By the above limitation of the position relationship, when the stator winding 212 is electrically conducted, the magnetic circuit and the magnetic field on the rotor assembly 40 form a linear loop along the axial direction, so that the magnetic circuit is minimized, and the loss formed by the curved magnetic circuit can be reduced.

Further, as shown in fig. 4 to 8, a flanging structure 214 is disposed at an end of the winding support 210 away from the support base 204, the stator winding 212 is disposed between the flanging structure 214 and the support base 204 and is wound around the winding support 210, and the flanging structure 214 plays a good role in limiting, so as to prevent the stator winding 212 from falling off.

On the basis of the third embodiment and the fourth embodiment, as shown in fig. 4, it is further defined that both end surfaces of the stator core 10 are exposed from the insulating support 202 along the axial direction of the stator core 10, so as to ensure the effective operation of the stator assembly 20.

Example five:

as shown in fig. 9, a fifth embodiment of the present invention provides an electric machine 100, which includes a housing, and a stator assembly 20 and a rotor assembly 40 disposed in the housing, wherein the electric machine 100 employs the stator assembly 20 according to any one of the second aspects of the present invention, so as to have all the advantages of any one of the stator assemblies 20, which will not be discussed herein.

Specifically, as shown in fig. 10 and fig. 11, the rotor assembly 40 includes a rotating plate 402 and a rotating shaft 406, wherein the rotating shaft 406 is disposed through the rotating plate 402, and can rotate under the driving of the stator assembly 20 to drive the components disposed on the rotating shaft 406 to rotate. Specifically, a stirring blade or a fan assembly may be provided on the rotating shaft 406.

Further, a plastic turntable is adopted to reduce the weight of the turntable 402 and improve the driving efficiency of the stator assembly 20 to the rotor assembly 40; a plurality of receiving portions (not shown) are provided in the turntable 402, and the magnetic member 404 is disposed in the receiving portions, thereby ensuring stable mounting of the magnetic member 404. Specifically, to ensure that the turntable 402 has uniform magnetic properties, the magnetic members 404 are uniformly distributed along the circumferential direction of the turntable 402.

The magnetic member 404 may be a unitary structure, or a plurality of magnetic members 404 may be provided. When an integral structure is adopted, a magnetic member 404 is integrally arranged in the accommodating portion, and different parts of the integral magnetic member 404 are ensured to have different magnetic poles (not shown); as shown in fig. 10 and 11, when a plurality of magnetic members 404 are employed, the magnetic members 404 are respectively provided in each of the accommodating portions, and the magnetic pole fitting relationship between the plurality of magnetic members 404 is ensured.

Example six:

in addition to the fifth embodiment, as shown in fig. 9, the housing is further defined to be composed of a side plate 302, a first end cap 304 and a second end cap 306, wherein the first end cap 304 and the second end cap 306 are located at two ends of the side plate 302, and the rotating shaft 406 penetrates through the first end cap 304.

Further, a bearing assembly (not shown) is sleeved on the rotating shaft 406, and the bearing assemblies are sleeved on the rotating shaft 406 at the positions of the first end cap 304 and the second end cap 306 to ensure that the rotating shaft 406 can rotate under the driving of the turntable 402 to output torque.

Example seven:

a seventh embodiment of the present invention provides a food processor (not shown in the drawings) comprising the motor 100 according to any one of the third aspect of the present invention, and a stirring blade (not shown in the drawings) provided on an output shaft of the motor 100 to cut and stir food. Further, since it has the motor 100 as in any one of the third aspect of the invention, it has all the advantageous effects of the motor 100 described above.

Example eight:

an eighth embodiment of the present invention provides a blower apparatus (not shown in the drawings) including the motor 100 according to any one of the third aspects of the present invention, and a fan assembly (not shown in the drawings) is provided on the turntable 402 of the motor 100 to flow a driving gas. Further, since it has the motor 100 as in any one of the third aspect of the invention, it has all the advantageous effects of the motor 100 described above.

The specific embodiment is as follows:

as shown in fig. 9, the present invention provides a disc motor, as shown in fig. 1 and fig. 2, a stator core 10 of the motor 100 is a radial winding structure, and the stator core 10 is formed by spirally winding and pressing a strip-shaped iron sheet; when the stator winding 212 is electrically conducted, the magnetic circuit and the magnetic field on the rotor form a linear loop along the axial direction, so that the magnetic circuit is minimized, and the loss formed by the curved magnetic circuit can be reduced; therefore, the magnetic circuit of the stator assembly 20 can be made shorter, so that the motor 100 can be made flatter and thinner, and miniaturization of the motor 100 can be achieved.

In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to 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 stator assembly, comprising:

an insulating section; and

the stator core is provided with stator windings on stator teeth, and the insulating part is at least partially positioned between the stator teeth and the stator windings;

the stator core comprises a plurality of layers of stamped sheets, a central through hole is enclosed by the plurality of layers of stamped sheets, and the plurality of layers of stamped sheets are radially and outwardly stacked and distributed on the central through hole;

the multilayer punching sheet is formed by rolling and folding a punching sheet from inside to outside along a spiral line;

the extending direction of the multilayer punching sheet is the same as the passing direction of the magnetic induction lines;

the insulating part is insulating support, insulating support includes:

a bracket base;

the avoidance notch is arranged on the bracket base;

the winding support extends along the avoiding gap in a direction back to the support base;

a flanging structure is arranged at one end of the winding support, which is far away from the support base, and the plurality of stator windings are positioned between the flanging structure and the support base;

the stator core penetrates through the bracket base from the avoiding gap;

the stator teeth and the stator winding are arranged in an isolated mode through the winding support.

2. The stator assembly of claim 1,

and a plurality of winding grooves are formed in at least one end face of the stator core and run through from the outer surface of the stator core to the inside of the stator core until the plurality of winding grooves are communicated with the central through hole.

3. The stator assembly of claim 2,

the plurality of winding slots are uniformly distributed along the circumferential direction of the stator core, and a stator tooth is defined by any two adjacent winding slots in the plurality of winding slots.

4. The stator assembly of claim 1,

the insulating support further comprises:

the winding support is sleeved on the stator teeth of the stator core, and the plurality of stator windings are respectively arranged on the winding support.

5. The stator assembly of claim 4,

the stator teeth extend at least partially into the winding support.

6. The stator assembly according to any one of claims 1 to 5,

and along the axial direction of the stator core, two end faces of the stator core are exposed out of the insulating part.

7. The stator assembly of claim 1,

the insulating part is an insulating coating.

8. An electric machine, comprising:

a housing;

a rotor assembly disposed within the housing; and

the stator assembly of any one of claims 1 to 7, disposed within the housing and configured to drive rotation of the rotor assembly;

the rotor assembly includes: the rotary table is arranged in the shell and is provided with a magnetic part;

the turntable is arranged on the accommodating part, and the magnetic part is positioned in the accommodating part; or

The magnetic part is a plurality of, and is a plurality of the magnetic part is along the circumference of carousel is interval distribution.

9. The electric machine of claim 8, wherein the rotor further comprises, in combination:

the turntable can rotate under the driving of the stator assembly.

10. The electric machine of claim 9, wherein the rotor assembly further comprises:

the rotating shaft penetrates through the rotary disc and the shell, and the rotating shaft can be driven by the rotary disc to rotate.

11. The electrical machine according to claim 9 or 10,

the rotary table is a plastic rotary table.

12. The electric machine of claim 10,

the rotor assembly is located in front of the stator assembly along the extending direction of the rotating shaft.

13. The electric machine of claim 10, wherein the housing comprises:

a side plate;

the first end cover is arranged at one end of the side plate, and the rotating shaft penetrates through the first end cover;

and the second end cover is arranged at the other end of the side plate.

14. The electric machine of claim 13, further comprising:

and the bearing assembly is sleeved on the rotating shaft and is positioned at the position where the rotating shaft is contacted with the first end cover and the second end cover.

15. A food processor, comprising:

the electric machine of any one of claims 8 to 14;

and the stirring cutter is connected with the rotor assembly and can rotate under the driving of the rotor assembly.

16. An air supply device, comprising:

an electric machine as claimed in any one of claims 8 to 14;

and the fan blade component is connected with the rotor assembly and can rotate under the driving of the rotor assembly.