CN112421809B - Motor, motor assembly, food processor, air supply device and household appliance - Google Patents

Motor, motor assembly, food processor, air supply device and household appliance Download PDF

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Publication number
CN112421809B
CN112421809B CN201910786786.7A CN201910786786A CN112421809B CN 112421809 B CN112421809 B CN 112421809B CN 201910786786 A CN201910786786 A CN 201910786786A CN 112421809 B CN112421809 B CN 112421809B
Authority
CN
China
Prior art keywords
stator
assembly
rotor assembly
motor
rotor
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
CN201910786786.7A
Other languages
Chinese (zh)
Other versions
CN112421809A (en
Inventor
梁显堂
陈炜杰
王云峰
刘锦泉
陈连城
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Midea Consumer Electric Manufacturing Co Ltd
Original Assignee
Guangdong Midea Consumer Electric Manufacturing Co Ltd
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 Guangdong Midea Consumer Electric Manufacturing Co Ltd filed Critical Guangdong Midea Consumer Electric Manufacturing Co Ltd
Priority to CN202211267404.8A priority Critical patent/CN115632496A/en
Priority to CN201910786786.7A priority patent/CN112421809B/en
Priority to PCT/CN2020/106508 priority patent/WO2021036691A1/en
Publication of CN112421809A publication Critical patent/CN112421809A/en
Application granted granted Critical
Publication of CN112421809B publication Critical patent/CN112421809B/en
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Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
    • A47J43/04—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
    • A47J43/07—Parts or details, e.g. mixing tools, whipping tools
    • A47J43/08—Driving mechanisms
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
    • A47J43/04—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
    • A47J43/07—Parts or details, e.g. mixing tools, whipping tools
    • A47J43/08—Driving mechanisms
    • A47J43/085—Driving mechanisms for machines with tools driven from the lower side
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
    • H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

The invention provides a motor, a motor assembly, a food processor, an air supply device and a household appliance, wherein the motor comprises: a rotor assembly; the stator assembly is arranged on one side of the rotor assembly; the stator assembly includes: stator teeth, the number of which is at least two; the number of the stator windings is at least two, and the at least two stator windings are respectively arranged on the stator teeth. The motor provided by the invention comprises the rotor component and the stator component, the stator component is arranged on one side of the rotor component, the rotor component can be axially separated from the stator component, and the stator component is in a non-closed structure, so that the weight of the stator component is lightened by reducing the number of stator windings in the stator component, the overall quality of the motor is lightened, and the overall lightweight technical effect of the motor is realized.

Description

Motor, motor assembly, food processor, air supply device and household appliance
Technical Field
The invention relates to the technical field of motors, in particular to a motor, a motor assembly, a food processor, an air supply device, a household appliance, an electric vehicle and a power generation device.
Background
In the related art, because the stator assembly of motor all is the closed ring setting in the rotor subassembly outside, the stator is through producing the magnetic field to the winding circular telegram to produce the power of attracting or repulsing to the magnetic pole of the rotor close with the winding, drive rotor rotates, the winding structure on the stator assembly all is the annular distribution that is with rotor assembly as the center, and two liang symmetries, therefore current motor inner space need set up rotor assembly and stator assembly, because the setting mode of stator, motor stator volume and weight are all great, consequently hardly carry out lightweight and miniaturized processing to the motor under the circumstances of guaranteeing motor operation stability.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art.
A first aspect of the invention provides an electric machine.
A second aspect of the invention provides an electric motor assembly.
A third aspect of the invention provides a food processor.
A fourth aspect of the present invention provides an air blowing device.
A fifth aspect of the present invention provides a home appliance.
A sixth aspect of the invention provides an electric vehicle.
A seventh aspect of the present invention provides a power generation apparatus.
In view of the above, according to a first aspect of the present invention, there is provided an electric motor comprising: a rotor assembly; the stator assembly is arranged on one side of the rotor assembly; the stator assembly includes: stator teeth, the number of which is at least two; the number of the stator windings is at least two, and the at least two stator windings are respectively arranged on the stator teeth.
The motor provided by the invention comprises the rotor component and the stator component, the stator component is arranged on one side of the rotor component, the rotor component can be axially separated from the stator component, and the stator component is in a non-closed structure, so that the overall quality of the motor is reduced. The stator assembly can be arranged inside the rotor assembly, and a space for storing the stator assembly is arranged inside the rotor assembly, so that compared with the solid rotor assembly in the prior art, the stator assembly has the characteristic of light weight, and the overall quality of the motor is further reduced; the stator assembly can be arranged at one end of the rotor assembly, axial separation of the rotor assembly and the stator assembly can be realized, and compared with the stator assembly in the related art, the stator assembly is arranged to be of a non-closed structure, so that the overall quality of the motor is reduced. Specifically, the stator assembly comprises at least two stator teeth, each stator tooth is provided with a stator winding, and the stator windings are used for being connected with a power supply to generate a magnetic field, and the rotor assembly rotates under the action of the magnetic field. In addition, the motor provided by the invention has the characteristic of light weight, so that the motor provided by the invention has lighter weight and smaller volume.
In the case that the motor of the invention is used on a food processor, the stator component of the motor can be arranged on the base of the food processor, the rotor component is arranged on the cup body of the food processor, namely, the base of the food processor is not required to be provided with an integral motor, and the stator component of the motor is only arranged in the base, so that the height of the base is reduced, and the overall height of the food processor is reduced.
In the above technical solution, the stator assembly includes at least one stator, and the stator includes a stator core, at least two stator teeth, and at least two stator windings based on the case that the number of the stators is one; based on the number of stators being plural, the stator includes a stator core, at least one stator tooth, and at least one stator winding.
In the technical scheme, the stator assembly can comprise one or more stators, and in the case that the stator assembly comprises one stator, the stator comprises a stator core, at least two stator teeth and at least two stator windings, the stator teeth are arranged on the stator core, the stator windings are arranged on the stator teeth, and the at least two stator windings can generate a magnetic field under the condition of being electrified, so that the rotor assembly rotates under the action of the magnetic field; in the case that the stator assembly includes a plurality of stators, the stator includes stator core, at least one stator tooth and at least one stator winding, and the stator tooth sets up on stator core, and the stator winding sets up on the stator tooth, the stator winding of a plurality of stators can jointly produce the magnetic field under the condition of circular telegram for rotor assembly rotates under the effect of magnetic field.
Specifically, the face of the stator assembly corresponding to the end face of the stator tooth constitutes the mating face of the stator assembly. It will be appreciated that where the stator assembly includes a plurality of stators, each stator may include a stator winding, the plurality of stators in combination having a plurality of stator windings which are commonly energized to produce a magnetic field, such that the rotor assembly rotates under the influence of the magnetic field.
Preferably, in the case of having a plurality of stator teeth on each stator core, the plurality of stator teeth are distributed on the stator core such that a space is provided between adjacent two stator teeth, thereby forming an accommodating space for the stator windings, and the stator windings on the adjacent two stator teeth are prevented from being in contact.
In any of the above aspects, preferably, the rotor assembly includes: and a turntable configured in a structure having an opening at one end, the stator assembly being disposed in the opening, the rotor assembly being separable from the stator assembly in an axial direction.
In this solution, the rotor assembly comprises a turntable, and one end of the turntable has an opening, the size of the opening being at least for the stator assembly to pass through, and the stator assembly being arranged in the opening such that the rotor assembly can be separated from the stator assembly in its axial direction. Specifically, one end of the turntable is provided with an opening through which the stator assembly can pass, namely, an opening is formed in the axial direction of the stator assembly, so that the rotor assembly can be separated from the stator assembly from the opening.
In any of the foregoing solutions, preferably, the rotor assembly further includes: a magnetic member; the carousel is discoid, is equipped with accommodation space along the circumference of carousel on the carousel, and the magnetic part sets up in accommodation space.
In this technical scheme, rotor subassembly still includes the magnetic part, and wherein the magnetic part receives the magnetic field influence that produces after the stator subassembly circular telegram, rotates under the effect of magnetic force, and further, the magnetic part distributes on the carousel along the circumference of carousel, can make the carousel atress more even, makes the motor stable output, and wherein the carousel sets up to one end and seals another terminal surface open-ended structure, and the open end is used for setting up stator subassembly, is convenient for to stator subassembly and rotor subassembly in axial split.
The rotor assembly is provided with the magnetic piece instead of a rotor core structure formed by laminating silicon steel sheets in the related art, so that the weight of the motor is reduced, the situation that a magnetic field loop is formed only when a magnetic field passes through a tooth part, a yoke part and a rotor of a stator on the rotor core formed by axially laminating in the related art is avoided, and therefore, closed magnetic force lines are necessarily curved, and larger magnetic leakage and loss can occur.
In any of the above embodiments, preferably, the number of the magnetic members is one, and one magnetic member is annular; or the number of the magnetic pieces is a plurality of, and the plurality of magnetic pieces are enclosed to form a ring shape.
In this technical solution, the magnetic element may be provided as an annular integral structure; the magnetic material can also be arranged as a plurality of split magnetic pieces, and the split magnetic pieces are enclosed to form a ring shape.
In any of the foregoing solutions, preferably, the rotor assembly further includes: the rotating shaft is inserted in the center of the rotating disc.
In this technical scheme, the rotor subassembly still includes the pivot of inserting at the carousel center for the rotor subassembly can rotate around pivot center stability.
In any of the above aspects, preferably, the stator assembly has a mating surface that mates with the rotor assembly, the mating surface being disposed opposite a portion of an inner peripheral surface of the rotor assembly.
In the technical scheme, the surface of the stator assembly matched with the rotor assembly is a matching surface, the matching surface is opposite to part of the inner peripheral surface of the rotor assembly, namely, the stator assembly is of a non-closed structure, and is provided with a non-closed annular stator assembly with smaller volume, so that the integral light weight and miniaturization of the motor are realized.
In any of the above embodiments, preferably, the plurality of stator teeth are located at equal distances from the end face of the rotor assembly to the rotational center of the rotor assembly.
In the technical scheme, the distances between each stator tooth and the rotation center of the rotor assembly are equal, and the stator windings are arranged on the stator teeth, so that magnetic fields generated by the plurality of stator windings are balanced to magnetic force generated by the rotor assembly, and the stability of the rotor assembly in the rotation process is improved.
In any of the above technical solutions, preferably, the number of the stator teeth is two, and the stator windings on the two stator teeth are sequentially electrified and have the same polarity; or the number of the stator teeth is two, the stator windings on the two stator teeth are electrified at the same time and have different polarities, and the magnetic poles of the stator windings on the two stator teeth are alternated.
In the technical scheme, when two stator teeth are arranged in the stator assembly, two schemes for driving the rotor assembly exist, wherein one scheme is that stator windings on the two stator teeth are sequentially electrified, polarities generated by the two stator windings are the same when the two stator windings are electrified, and according to a magnetic attraction principle, magnetic force generated by the stator windings acts on the rotor assembly to enable the rotor assembly to rotate, and the two stator windings are sequentially electrified, so that acting force on the rotor assembly is sequentially generated by the two stator windings, and the rotor assembly is driven to continuously rotate; the other is that the stator windings on the two stator teeth are electrified simultaneously, the polarities generated by the two stator windings are different when the two stator windings are electrified, the magnetic force generated by the stator windings acts on the rotor assembly to enable the rotor assembly to rotate, and in the process of controlling the rotor assembly to rotate by electrifying, the polarities of the two stator windings are alternately changed, so that the two stator windings sequentially generate magnetic forces with different polarities, namely, the two stator windings sequentially generate acting forces on different magnetic poles on the rotor assembly, and the rotor assembly is driven to continuously rotate. It can be understood that when the stator assembly is arranged, two stator winding arrangement schemes can be selected according to actual conditions and working requirements, so that the flexibility of the stator assembly arrangement of the motor is further enhanced, and the applicability of the motor is improved.
In any of the above technical solutions, preferably, the number of stator teeth is 3 or more, and polarities of stator windings on any two adjacent stator teeth are different.
In this technical solution, when the number of stator teeth is greater than or equal to 3, it is preferable to energize two adjacent stator windings together, and to make the polarities of the two windings opposite, so that the rotor assembly receives a force in a tangential direction, and power the rotation of the rotor assembly is achieved.
In any of the above technical solutions, preferably, the number of stator windings is 3N, and the number of poles of the magnetic member is 4M, where N is a positive integer and M is a positive integer.
In the technical scheme, the number of the stator windings is limited, namely, the number of the stator windings is an integer multiple of 3, and the number of the magnetic poles of the magnetic piece in the rotor assembly is an integer multiple of 4.
In any of the above embodiments, preferably, the magnetic member is a magnet.
In the technical scheme, the magnetic part in the rotor assembly is set to be the magnet, and the magnet has the advantages of being easy to obtain materials and low in production cost, and the rotor assembly can be continuously influenced by magnetic force to rotate in the magnetic field generated by the stator assembly.
In any of the foregoing technical solutions, preferably, the motor further includes a magnetic judgment device, and the magnetic judgment device is disposed along a circumferential direction of the rotor assembly and is configured to obtain a rotation direction of the rotor assembly relative to the stator assembly.
In this technical scheme, through setting up magnetism judgement device in the circumference position of rotor subassembly, when the motor is in operation, can judge the direction of rotation of rotor subassembly.
In any of the foregoing solutions, preferably, the stator assembly further includes: and the insulating piece is arranged on the stator core and is used for isolating the stator core from the stator winding.
In the technical scheme, the insulating piece is arranged between the stator core and the stator windings, the insulating piece has an insulating effect, the insulating piece can isolate the stator core and at least two stator windings, the insulating piece can prevent the at least two stator windings from being electrically connected with the stator core, and the stability of the stator windings during working is improved.
In any of the above embodiments, preferably, the insulating member includes: a first insulating part attached to an upper surface or a lower surface of the stator core; the second insulating part is connected with the first insulating part and sleeved on the side wall of the stator tooth; and the third insulating part is connected with the first insulating part and extends from the surface of the first insulating part towards the direction away from the stator core so as to isolate the stator core from the stator winding.
In this technical scheme, the insulating piece includes first insulating portion, second insulating portion and third insulating portion. The first insulating part, the second insulating part and the third insulating part are matched to isolate the stator core and the stator winding in multiple directions, multiple angles and multiple dimensions, so that the use safety and stability of the stator assembly can be improved.
A second aspect of the present invention provides a motor assembly having a motor as provided in any one of the first aspects, and a rotor support having mounting holes provided thereon for supporting a rotating shaft of the rotor assembly and facilitating removal of the rotating shaft from the mounting holes.
The motor assembly comprises the motor in any one of the technical schemes of the first aspect, and further comprises the rotor bracket provided with the mounting hole, so that the rotor assembly in the motor can be arranged in the mounting hole of the rotor bracket, and the rotor assembly can be quickly taken out along the axial direction of the rotor assembly, thereby facilitating the disassembly and the installation of the rotor assembly, and further facilitating the subsequent daily maintenance and repair of the motor.
It can be understood that the bearing can be arranged at the position of the mounting hole, the bearing and the rotating shaft are sleeved together, so that the rotating shaft can smoothly rotate relative to the rotor bracket, when the rotor assembly is electrified and works, relative displacement cannot be generated between the bearing and the mounting hole, and when the rotor assembly is required to be disassembled, the rotor assembly and the bearing can be quickly taken down from the rotor bracket together.
A third aspect of the present application provides a food processor having the motor provided in any of the first aspects, and therefore, embodiments of the present application provide a food processor having all the advantages of the motor provided in any of the first aspects, not specifically recited herein.
In any of the above aspects, preferably, the food processor further comprises: cup and base, stator module set up on the base, rotor module set up on the cup.
Under the condition that the stator component is provided with a matching surface matched with the rotor component and the matching surface is opposite to part of the inner peripheral surface of the rotor, the rotor component can be separated from the stator component in the axial direction of the rotor component, so that the rotor component can be separated from the base along with the cup body, an integral motor is not required to be installed in the base, the height of the base is reduced, and the integral height of the food processor is reduced. In addition, compared with the annular stator assembly in the related art, the stator assembly is of a non-closed structure, so that the weight of the stator assembly is reduced, the weight of the whole product is reduced, the extraction and use of a user are facilitated, the occupied space is reduced, and the storage is facilitated.
A fourth aspect of the present invention provides an air supply device having the motor provided in any one of the first aspects, and therefore, the air supply device provided in the embodiments of the present invention has all the advantages of the motor provided in any one of the first aspects, which are not listed here.
A fifth aspect of the present invention provides a household appliance having the motor provided by any one of the first aspects, and therefore, the household appliance provided by the embodiment of the present invention has all the advantages of the motor provided by any one of the first aspects, which are not listed here.
A sixth aspect of the present invention provides an electric vehicle having the motor provided in any one of the first aspects, and therefore, the electric vehicle provided in the embodiment of the present invention has all the advantages of the motor provided in any one of the first aspects, which are not listed here.
A seventh aspect of the present invention provides a power generating apparatus having the motor provided in any one of the first aspects, and therefore, the power generating apparatus provided in the embodiments of the present invention has all the advantages of the motor provided in any one of the first aspects, which are not listed here.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 illustrates a schematic construction of a portion of a rotor assembly and a stator assembly according to one embodiment of the invention;
FIG. 2 illustrates a schematic structural view of a stator assembly according to one embodiment of the present invention;
fig. 3 shows a schematic structural view of a stator core according to an embodiment of the present invention;
FIG. 4 shows a schematic structural view of an insulator according to one embodiment of the present invention;
FIG. 5 shows a schematic structural view of a rotor assembly according to another embodiment of the present invention;
FIG. 6 shows a schematic cross-sectional view of the rotor assembly of FIG. 5 at A-A according to another embodiment of the invention;
FIG. 7 illustrates a schematic construction of a motor assembly according to one embodiment of the invention;
fig. 8 shows a schematic structural view of a motor assembly according to another embodiment of the present invention;
fig. 9 shows a schematic structure of a food processor according to an embodiment of the present invention.
The correspondence between the reference numerals and the component names in fig. 1 to 9 is:
100 rotor assembly, 120 turnplate, 140 rotating shaft, 160 magnetic piece, 200 stator assembly, 210 stator core, 212 stator tooth, 214 stator winding, 300 insulator, 320 first insulator, 340 second insulator, 360 third insulator, 400 rotor bracket, 410 mounting hole, 5 food processor, 52 cup, 54 base.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will be more clearly understood, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and the scope of the application is therefore not limited to the specific embodiments disclosed below.
A motor, a motor assembly, a food processor, an air blowing device, a home appliance, an electric vehicle, and a power generation device according to some embodiments of the present application are described below with reference to fig. 1 to 9.
Example 1
As shown in fig. 1, an electric machine of an embodiment of a first aspect of the present application includes a rotor assembly 100 and a stator assembly 200.
Wherein the stator assembly 200 is disposed at one side of the rotor assembly 100; the stator assembly 200 includes: stator teeth 212, the number of stator teeth 212 being at least two; the number of stator windings 214 is at least two, and at least two stator windings 214 are respectively disposed on the stator teeth 212.
In this embodiment, the stator assembly 200 is disposed at one side of the rotor assembly 100, so that the rotor assembly 100 can be axially separated from the stator assembly 200, and the stator core 210 is disposed in a non-closed structure, so that the stator windings 214 are not required to be symmetrically disposed, the effect that the rotor assembly 100 can be rotated under the influence of the magnetic field emitted from the stator assembly 200 by using fewer stator windings 214 is achieved, and the weight of the stator assembly 200 is reduced by reducing the number of stator windings 214 disposed in the stator assembly 200, thereby achieving the overall weight reduction of the motor.
The stator assembly 200 can be arranged inside the rotor assembly 100, a space for the stator assembly 200 to be arranged is arranged inside the rotor assembly 100, further, the inside of the rotor assembly 100 in the embodiment is of a hollow structure, when the stator assembly 200 is arranged inside the rotor assembly 100, the stator assembly 200 emits a magnetic field after being electrified, the rotor assembly 100 rotates under the action of the magnetic field force, and the stator assembly 200 inside the rotor assembly 100 does not occupy other space occupied by the rotor assembly 100, so that the whole volume of the motor is reduced, and the space for the stator assembly 200 to be stored is arranged inside the rotor assembly 100, compared with the solid rotor assembly 100 in the prior art, the motor has the characteristic of light weight, and the whole quality of the motor is further lightened; the stator assembly 200 may also be disposed at one end of the rotor assembly 100, and the axial separation of the rotor assembly 100 and the stator assembly 200 may be also achieved, so that the overall mass of the motor is reduced as compared with the stator assembly 200 in the related art, in which the stator assembly 200 is disposed in a non-closed structure.
As shown in fig. 9, in the case that the motor of the present invention is used in the food processor 5, the stator assembly 200 of the motor may be disposed on the base 54 of the food processor 5, the rotor assembly 100 may be disposed on the cup 52 of the food processor 5, that is, the base 54 of the food processor 5 may not need to be mounted with an integral motor, but only the stator assembly 200 of the motor may be disposed in the base 54, so that the height of the base 54 is reduced, thereby reducing the overall height of the food processor 5.
Specifically, the stator assembly 200 includes at least two stator teeth 212, and each stator tooth 212 is provided with a stator winding 214, and the stator windings 214 are used for generating a magnetic field when being connected with a power supply, so that the rotor assembly 100 rotates under the action of the magnetic field; in addition, the motor provided by the invention has the characteristic of light weight, so that the motor provided by the invention has lighter weight and smaller volume.
In any of the above embodiments, the stator assembly 200 includes at least one stator including a stator core 210, at least two stator teeth 212, and at least two stator windings 214 based on the number of stators being one; based on the number of stators being plural, the stator includes a stator core 210, at least one stator tooth 212, and at least one stator winding 214.
In this embodiment, the stator assembly 200 may include one or more stators, and in the case that the stator assembly 200 includes one stator, the stator includes a stator core 210, at least two stator teeth 212, and at least two stator windings 214, the stator teeth 212 are disposed on the stator core 210, the stator windings 214 are disposed on the stator teeth 212, and the at least two stator windings 214 may generate a magnetic field when energized, such that the rotor assembly 100 rotates under the influence of the magnetic field; in the case that the stator assembly 200 includes a plurality of stators, the stators include a stator core 210, at least one stator tooth 212, and at least one stator winding 214, the stator tooth 212 is disposed on the stator core 210, the stator winding 214 is disposed on the stator tooth 212, and the stator windings 214 of the plurality of stators may collectively generate a magnetic field when energized, such that the rotor assembly 100 rotates under the influence of the magnetic field.
Specifically, the faces of the stator assembly 200 corresponding to the end faces of the stator teeth 212 constitute mating faces of the stator assembly 200.
It will be appreciated that where the stator assembly 200 includes a plurality of stators, each stator may include a stator winding 214, the plurality of stators in combination having a plurality of stator windings 214, the plurality of stator windings 214 being commonly energized to produce a magnetic field such that the rotor assembly 100 rotates under the influence of the magnetic field.
Preferably, in the case of having a plurality of stator teeth 212 on each stator core 210, the plurality of stator teeth 212 are spaced apart on the stator core 210 such that there is a space between adjacent two of the stator teeth 212, thereby forming an accommodating space for the stator windings 214, and preventing the stator windings 214 on the adjacent two of the stator teeth 212 from contacting.
In any of the above embodiments, optionally, the magnetic judgment device is disposed along the circumferential direction of the rotor assembly 100, for acquiring the rotation direction of the rotor assembly 100 relative to the stator assembly 200.
In this embodiment, a magnetic judgment device (not shown) is mounted at the circumferential position of the rotor assembly 100, and the rotation direction of the rotor assembly 100 is judged by the magnetic judgment device.
Specifically, when the motor is in the power-on operation, the rotation direction of the rotor assembly 100 is judged by the magnetic judgment device, so that the power-on state of the stator assembly 200 and the magnetic field polarity of the stator assembly 200 are controlled, the non-fully enclosed stator assembly 200 is utilized to generate a magnetic field, and the rotor assembly 100 in the magnetic field can be influenced by magnetic force to rotate.
Example two
As shown in fig. 1, 5 to 8, in one embodiment of the present invention, optionally, the rotor assembly 100 includes:
the rotor plate 120, the rotor plate 120 is constructed in a structure having an opening at one end, the stator assembly 200 is disposed in the opening, and the rotor assembly 100 is separable from the stator assembly 200 in an axial direction.
In this embodiment, the rotor assembly 100 includes a turntable 120, and one end of the turntable 120 has an opening sized to at least allow the stator assembly 200 to pass therethrough, with the stator assembly 200 disposed within the opening such that the rotor assembly 100 can be separated from the stator assembly 200 along its axial direction. Specifically, one end of the turntable 120 is provided with an opening through which the stator assembly 200 can pass, that is, an opening is formed in the axial direction of the stator assembly 200, so that the rotor assembly 100 can be separated from the stator assembly 200 from the opening.
Specifically, in the production of the product, the driven member of the motor and the rotor assembly 100 of the motor in the embodiment can be arranged together, and in the daily maintenance and repair process of the product, the driven member and the rotor assembly 100 can be detached and installed together, so that the product using the motor in the embodiment has a simple structure and is convenient to repair and maintain daily.
In any of the above embodiments, optionally, the rotor assembly 100 further comprises: a magnetic member 160; the turntable 120 has a disk shape, and an accommodating space is provided on the turntable 120 along the circumferential direction of the turntable 120, and the magnetic member 160 is provided in the accommodating space.
In any of the above embodiments, optionally, the rotor assembly 100 further comprises: the rotating shaft 140 is inserted in the center of the turntable 120.
In any of the above embodiments, the plurality of magnetic members 160 may alternatively be magnets.
In this embodiment, the rotor assembly 100 includes: carousel 120, insert the pivot 140 and the magnetic part 160 of establishing at carousel 120 center, wherein magnetic part 160 can receive the magnetic field influence that produces after stator module 200 circular telegram, moves under the effect of magnetic field force, drives carousel 120 and rotates, and wherein carousel 120 can drive pivot 140 and rotate, has realized the effect with electric energy conversion kinetic energy. The magnetic members 160 are distributed on the turntable 120 along the circumferential direction of the turntable, so that the stress of the turntable 120 can be more uniform, and the motor can stably output through the rotating shaft 140. The material of the magnetic part 160 in the rotor assembly 100 is selected to be a magnet, and the magnet is a permanent magnet, so that the rotor assembly 100 can continuously rotate under the influence of magnetic force in the magnetic field generated by the stator assembly 200, and the magnet has the advantages of easily available material and low production cost.
The rotary table is arranged in a structure that one end face is closed, the other end face is open, the open end is used for arranging a stator assembly, and the stator assembly and the rotor assembly are convenient to split in the axial direction.
The rotor assembly 100 is provided with the magnetic member 160 instead of the rotor core structure formed by laminating silicon steel sheets in the related art, which is not only beneficial to reducing the weight of the motor, but also avoids the situation that the magnetic field loop can be formed only by the tooth part, the yoke part and the rotor of the stator when the magnetic field passes through the rotor core formed by axially laminating the related art, so that the closed magnetic force lines are necessarily curved, and larger magnetic leakage and loss can occur.
Optionally, the magnetic members 160 may be detachably connected to the turntable 120, so that the magnetic members 160 may be easily detached during subsequent maintenance, avoiding failure of one magnetic member 160 in the rotor assembly 100, which results in replacement of the whole rotor assembly 100, thereby saving subsequent maintenance costs.
As shown in fig. 1 and fig. 5 to fig. 8, in any of the above embodiments, alternatively, the number of the magnetic members 160 is one, and one magnetic member 160 is annular; or the number of the magnetic pieces 160 is plural, and the plurality of magnetic pieces 160 are enclosed to form a ring shape.
As shown in fig. 1 and 5, in particular, the magnetic member 160 may be a plurality of magnets uniformly distributed on the turntable 120 along the circumferential direction of the turntable 120, and the plurality of magnets may be influenced by a magnetic field generated after the stator assembly 200 is energized, so as to drive the turntable 120 to rotate under the action of the magnetic field.
As shown in fig. 6 and 7, specifically, the magnetic members 160 may be configured as an integral ring, distributed along the circumference of the turntable 120, and the integral magnetic members 160 also have a plurality of magnetic poles, and the integral magnetic members 160 may be influenced by a magnetic field generated after the stator assembly 200 is energized, so as to drive the turntable 120 to rotate under the effect of the magnetic field.
Example III
As shown in fig. 1 to 8, in any of the above embodiments, the stator assembly 200 may alternatively have a mating surface that mates with the rotor assembly 100, the mating surface being disposed opposite a portion of the inner peripheral surface of the rotor assembly 100.
In this embodiment, the surface of the stator assembly 200 that mates with the rotor assembly 100 is a mating surface, and the mating surface is disposed opposite to a part of the inner peripheral surface of the rotor assembly 100, that is, the stator assembly 200 is in a non-closed structure, and a non-closed ring-shaped stator assembly 200 with smaller volume is disposed.
It can be appreciated that the mating surface of the stator assembly 200 may be an arc surface or a plane, the stator assembly 200 may be configured in a non-closed structure to separate the rotor assembly 100 from the stator assembly 200 in the axial direction, and the stator assembly 200 may be configured in a non-closed structure to reduce the weight of the stator assembly 200; preferably, the stator assembly 200 is provided with an arc structure, and the radian of the stator assembly 200 is the same as that of the rotor assembly 100, so that the shortest distance between each position of the stator assembly 200 and the rotor assembly 100 is equal, and better matching between the stator assembly 200 and the rotor assembly 100 is realized when the motor operates.
Alternatively, in the case of having a plurality of stator teeth 212 on each stator core 210, the plurality of stator teeth 212 are spaced apart on the stator core 210 such that a space is provided between adjacent two of the stator teeth 212, thereby forming an accommodating space for the stator windings 214, and preventing the stator windings 214 on the adjacent two of the stator teeth 212 from contacting.
In any of the above embodiments, the end face of the stator teeth 212 adjacent to the rotor assembly 100 is optionally equidistant from the center of rotation of the rotor assembly 100.
In this embodiment, the distance between each stator tooth 212 and the rotation center of the rotor assembly 100 is equal, and since the stator windings 214 are disposed on the stator teeth 212, the magnetic fields generated by the plurality of stator windings 214 balance the magnetic force generated by the rotor assembly 100, so as to improve the stability of the rotor assembly 100 during rotation.
In any of the above embodiments, alternatively, the number of the stator teeth 212 is two, and the stator windings 214 on the two stator teeth 212 are sequentially energized and have the same polarity; or the number of stator teeth 212 is two, the stator windings 214 on both stator teeth 212 are energized simultaneously and of different polarity, and the poles of the stator windings 214 on both stator teeth 212 alternate.
In this embodiment, when two stator teeth 212 are provided in the stator assembly 200, there are two schemes for driving the rotor assembly 100, in which one scheme is that the stator windings 214 on the two stator teeth 212 are sequentially energized, and the polarities generated by the two stator windings 214 are the same when energized, the two stator windings 214 are sequentially energized, so that the two stator windings 214 sequentially generate forces on the rotor assembly 100, thereby driving the rotor assembly 100 to continuously rotate; the other is that the stator windings 214 on the two stator teeth 212 are energized simultaneously, and the polarities generated by the two stator windings 214 are different when being energized, the magnetic force generated by the stator windings 214 acts on the rotor assembly 100 to rotate, and in the process of energizing and controlling the rotor assembly 100 to rotate, the polarities of the two stator windings 214 are alternately changed, so that the two stator windings 214 sequentially generate magnetic forces with different polarities, that is, the two stator windings 214 sequentially generate acting forces on different magnetic poles on the rotor assembly 100, so as to drive the rotor assembly 100 to continuously rotate.
Specifically, two stator winding 214 arrangement schemes are selected according to actual conditions and working requirements, so that flexibility of arrangement of the stator assembly 200 of the motor is further enhanced, and applicability of the motor is improved.
The first driving scheme uses the polarity of the stator winding 214 as N pole example: specifically, when the stator windings 214 on the two stator teeth 212 are sequentially energized and are N-pole, the first stator winding 214 is energized to generate an N-pole magnetic field, the S-pole of the magnetic member 160 in the rotor assembly 100 is attracted according to the principle of opposite magnetic pole attraction, the S-pole of the magnetic member 160 in the rotor assembly 100 is attracted to the position of the first stator winding 214, the N-pole of the magnetic member 160 passes through the second stator winding 214, the second stator winding 214 is closer to the N-pole of the magnetic member 160 in the rotor assembly 100, the first stator winding 214 is de-energized at the moment, the second stator winding 214 is energized at the same time, the second stator winding 214 generates an N-pole magnetic field, the N-pole magnetic field generated by the second stator winding 214 pushes the N-pole of the magnetic member 160 to move towards the first stator winding 214, the second stator winding 214 is de-energized at the moment, the first stator winding 214 generates an N-pole to push the adjacent N-pole of the magnetic member 160, and the second stator winding 214 is energized continuously according to the principle of like magnetic pole repulsion, and the second stator winding 100 is rotated continuously.
The second driving scheme is that the stator windings 214 on two stator teeth 212 are energized simultaneously and of different polarities, and the poles of the stator windings 214 on two stator teeth 212 alternate. The following is a specific description: specifically, when the first power is applied, the first stator winding 214 generates an N-pole magnetic field, the second stator winding 214 generates an S-pole magnetic field, and simultaneously, the two stator windings 214 are applied, the first stator winding 214 generates an N-pole magnetic field, according to the principle of opposite magnetic pole attraction, the first stator winding 214 attracts the S-pole of the magnetic part 160 of the rotor assembly 100, the second stator winding 214 attracts the N-pole of the magnetic part 160 of the rotor assembly 100, a tangential force is formed on the rotor assembly 100, at this time, the magnetic poles of the first stator winding 214 and the second stator winding 214 are switched, at this time, the first stator winding 214 generates an S-pole magnetic field, the second stator winding 214 generates an N-pole magnetic field, according to the principle of opposite magnetic pole attraction, the first stator winding 214 and the second stator winding 214 generate a repulsive force to the S-pole of the magnetic part 160, respectively, so that the rotor assembly 100 continues to rotate, at this time, the first stator winding 214 and the second stator winding 214 are switched, and the magnetic poles of the second stator winding 214 are circulated, so that the rotor assembly 100 continuously rotates.
Example IV
As shown in fig. 1 to 8, in any of the above embodiments, alternatively, the number of the stator teeth 212 is 3 or more, and the polarities of the stator windings 214 on any two adjacent stator teeth 212 are different.
In this embodiment, when the number of stator teeth 212 is greater than or equal to 3, it is preferable to energize two adjacent stator windings 214 together with opposite polarities of the adjacent windings, subjecting the rotor assembly 100 to a tangential force, effecting rotation of the rotor assembly 100.
Specifically, when the number of stator teeth 212 is set to three, energization of the first stator winding 214 and the second stator winding 214 is started, the first stator winding 214 generates an N-pole magnetic field that attracts the S-poles of the magnetic members 160 in the rotor assembly 100, the second stator winding 214 generates an S-pole magnetic field that attracts the N-poles of the magnetic members 160 in the rotor assembly 100, a tangential force is applied to the rotor assembly 100, then energization of the second stator winding 214 and the third stator winding 214 generates an N-pole magnetic field that repels the N-poles of the magnetic members 160 in the rotor assembly 100, and the third stator winding 214 generates an S-pole magnetic field that repels the S-poles of the magnetic members 160 in the rotor assembly 100, thereby allowing the rotor assembly 100 to continue to rotate, and in turn, the rotor assembly 100 to continue to rotate.
In any of the above embodiments, alternatively, the number of stator windings 214 is 3N and the number of poles of the magnetic member 160 is 4M; wherein N is a positive integer, and M is a positive integer.
In this embodiment, the number of stator windings 214 is limited to a minimum of 3, that is, when more stator windings 214 are required, the number of stator windings 214 is set to be an integer multiple of 3, and when more magnetic poles of the magnetic member 160 are required, the number of magnetic poles of the magnetic member 160 is set to be an integer multiple of 4, and by limiting the number of stator windings 214 and the number of magnetic poles of the magnetic member 160, the output efficiency of the motor can be made higher.
Specifically, when the requirement for the running stability of the motor is high, the number of the stator windings 214 can be set to 6 or 9 or more, so that the number of magnetic poles in the motor is increased, and the running of the motor is smoother. And each stator winding 214 is disposed on a stator tooth 212, the number of stator teeth 212 should be the same as the number of stator windings 214.
Example five
As shown in fig. 2 to 4, in an embodiment of the present invention, optionally, the stator assembly 200 further includes: an insulator 300 is disposed on the stator core 210, the insulator 300 being used to isolate the stator core 210 from the stator windings 214. The number of the insulators 300 is two, and the stator core 210 and the stator winding 214 are isolated from each other in the up-down direction.
In one embodiment of the present invention, optionally, the insulator 300 includes: a first insulating part 320 attached to an upper surface or a lower surface of the stator core 210; the second insulating part 340 is connected with the first insulating part 320, and the second insulating part 340 is sleeved on the side wall of the stator tooth 212; and a third insulation part 360 connected to the first insulation part 320, the third insulation part 360 extending from a surface of the first insulation part 320 toward a direction away from the stator core 210 to isolate the stator core 210 from the stator winding 214.
In this embodiment, by disposing the insulating member 300 between the stator core 210 and the stator winding 214, the insulating member 300 has an insulating effect, the insulating member 300 can isolate the stator core 210 and the stator winding 214, and the insulating member 300 can prevent the stator winding 214 from being electrically connected with the stator core 210, so as to improve the stability of the stator winding 214 during operation.
Specifically, the insulator 300 includes a first insulating portion 320, a second insulating portion 340, and a third insulating portion 360. The first insulating portion 320, the second insulating portion 340, and the third insulating portion 360 cooperate to isolate the stator core 210 from the stator winding 214 in multiple directions, multiple angles, and multiple dimensions, so as to improve the use safety and stability of the stator assembly 200.
As shown in fig. 7 and 8, an embodiment of the second aspect of the present invention provides a motor assembly having the motor provided in any one of the aspects of the first aspect, and a rotor support 400 having a mounting hole 410 provided thereon, the mounting hole 410 extending to an end surface of the rotor support 400, the mounting hole 410 for supporting the rotation shaft 140 of the rotor assembly 100 and facilitating removal of the rotation shaft 140 from the mounting hole 410. Accordingly, embodiments of the present invention provide a food processor having all of the benefits of the motor assembly provided by any of the embodiments of the first aspect, which are not expressly recited herein.
The motor assembly provided in this embodiment includes the motor in any one of the first aspect, and further includes a rotor bracket 400 provided with a mounting hole 410, and the rotor assembly 100 in the motor can be disposed in the mounting hole 410 of the rotor bracket 400, so that the rotor assembly 100 can be quickly taken out along the axial direction of the rotor assembly 100, thereby facilitating the disassembly and assembly of the rotor assembly 100, and further facilitating the subsequent daily maintenance and repair of the motor.
It can be appreciated that a bearing may be further disposed at the position of the mounting hole 410, and the bearing and the rotating shaft 140 are sleeved together, so that the rotating shaft 140 can smoothly rotate relative to the rotor bracket 400, when the rotor assembly 100 is powered on, no relative displacement occurs between the bearing and the mounting hole 410, and when the rotor assembly 100 is required to be disassembled, the rotor assembly 100 and the bearing can be quickly removed from the rotor bracket 400 together.
An embodiment of the third aspect of the present application provides a food processor having the motor provided by any one of the first aspect, and therefore the food processor provided by the embodiment of the present application has all the advantages of the motor provided by any one of the first aspect, which are not listed here.
In one specific embodiment, as shown in fig. 9, the food processor 5 further comprises: cup 52 and base 54, stator assembly 200 is disposed on base 54, and rotor assembly 100 is disposed on cup 52. The stator assembly 200 has a mating surface that mates with the rotor assembly 100, and the mating surface is disposed opposite a portion of the inner circumferential surface of the rotor assembly 100.
Because the rotor assembly 100 can be separated from the stator assembly 200 in its axial direction, such that the rotor assembly 100 can be separated from the base 54 along with the cup 52, the overall motor need not be installed in the base 54, and the height of the base 54 and thus the overall height of the food processor 5 can be reduced. In addition, compared with the annular stator in the related art, the stator is in a non-closed structure, so that the weight of the stator assembly 200 is reduced, the weight of the whole product is reduced, the extraction and use of a user are facilitated, the occupied space is reduced, and the storage is facilitated.
Optionally, the food processor 5 is any one of a stirrer, a wall breaking machine, a soymilk machine, a cooking machine, a chef machine and a cooking machine.
An embodiment of the fourth aspect of the present invention provides an air supply device having the motor provided in any one of the first aspect, and therefore, the air supply device provided in the embodiment of the present invention has all the advantages of the motor provided in any one of the first aspect, which are not listed here.
An embodiment of a fifth aspect of the present invention provides a household appliance having the motor provided by any one of the claims of the first aspect, and therefore, the household appliance provided by the embodiment of the present invention has all the advantages of the motor provided by any one of the embodiments of the first aspect, which are not listed here.
An embodiment of a sixth aspect of the present invention provides an electric vehicle having the motor provided by any one of the first aspects, and therefore, the electric vehicle provided by the embodiment of the present invention has all the advantages of the motor provided by any one of the first aspects, which are not listed here.
In the embodiments of the above third aspect to the sixth aspect, the driven component that needs the motor to supply power may be provided together with the rotor component 100 in the embodiment of the first aspect, and the product structure is simplified, and at the same time, convenient disassembly and assembly of the driven component is achieved.
An embodiment of a seventh aspect of the present invention provides a power generating device having the motor provided by any one of the first aspects, and therefore, the power generating device provided by the embodiment of the present invention has all the advantages of the motor provided by any one of the first aspects, which are not listed here.
In the present invention, the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean 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 present invention. In this specification, schematic representations of the above terms 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, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (15)

1. An electric machine, comprising:
a rotor assembly;
a stator assembly disposed at one side of the rotor assembly;
the stator assembly includes:
stator teeth, the number of which is three;
the stator windings are arranged on each stator tooth;
the rotor assembly includes:
a turntable configured to have a structure in which one end has an opening and the other end is closed, the stator assembly being disposed in the opening, the rotor assembly being separable from the stator assembly in an axial direction, the stator assembly being of a non-closed structure;
the stator assembly is provided with a matching surface matched with the rotor assembly, the matching surface is arranged opposite to part of the inner peripheral surface of the rotor assembly, the stator assembly is of an arc-shaped structure, and the radian of the stator assembly is the same as that of the rotor assembly;
The motor further includes:
the magnetic judgment device is arranged along the circumferential direction of the rotor assembly and is used for acquiring the rotation direction of the rotor assembly relative to the stator assembly;
the rotor assembly further includes:
a magnetic member;
the rotary table is disc-shaped, an accommodating space is formed in the rotary table along the circumferential direction of the rotary table, and the magnetic piece is arranged in the accommodating space;
the number of the magnetic pieces is one, and one magnetic piece is annular.
2. The electric machine of claim 1, wherein the stator assembly comprises at least one stator;
based on the case that the number of the stators is one, the stators include a stator core, at least two of the stator teeth, and at least two of the stator windings;
based on the number of stators being plural, the stator includes a stator core, at least one of the stator teeth, and at least one of the stator windings.
3. The electric machine of claim 1, wherein the rotor assembly further comprises:
the rotating shaft is inserted in the center of the rotating disc.
4. An electric machine according to any one of claims 1 to 3, characterized in that,
The distances between the end surfaces of the plurality of stator teeth, which are close to the rotor assembly, and the rotation center of the rotor assembly are equal.
5. An electric machine according to any one of claims 1 to 3, characterized in that,
the number of the stator teeth is two, and the stator windings on the two stator teeth are sequentially electrified and have the same polarity; or (b)
The number of the stator teeth is two, the stator windings on the two stator teeth are electrified at the same time and have different polarities, and the magnetic poles of the stator windings on the two stator teeth are alternated.
6. An electric machine according to any one of claims 1 to 3, characterized in that,
the number of the stator teeth is more than or equal to 3, and the polarities of stator windings on any two adjacent stator teeth are different.
7. An electric machine according to claim 1, characterized in that,
the number of the stator windings is 3N, and the number of the magnetic poles of the magnetic piece is 4M;
wherein N is a positive integer, and M is a positive integer.
8. The electric machine of claim 2, wherein the stator assembly further comprises:
and the insulating piece is arranged on the stator core and is used for isolating the stator core from the stator winding.
9. The electric machine of claim 8, wherein the insulator comprises:
a first insulating part attached to an upper surface or a lower surface of the stator core;
the second insulating part is connected with the first insulating part and sleeved on the side wall of the stator tooth;
and the third insulation part is connected with the first insulation part and extends from the surface of the first insulation part towards the direction away from the stator core so as to isolate the stator core from the stator winding.
10. An electric motor assembly, comprising:
the motor of any one of claims 1 to 9; and
and the rotor bracket is provided with a mounting hole, and the mounting hole is used for supporting the rotating shaft of the rotor assembly and facilitating the rotating shaft to move out of the mounting hole.
11. A food processor comprising:
an electrical machine as claimed in any one of claims 1 to 9.
12. An air blowing device, comprising:
an electrical machine as claimed in any one of claims 1 to 9.
13. A household appliance, comprising:
an electrical machine as claimed in any one of claims 1 to 9.
14. An electric vehicle, characterized by comprising:
an electrical machine as claimed in any one of claims 1 to 9.
15. A power generation device, characterized by comprising:
an electrical machine as claimed in any one of claims 1 to 9.
CN201910786786.7A 2019-08-23 2019-08-23 Motor, motor assembly, food processor, air supply device and household appliance Active CN112421809B (en)

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CN202211267404.8A CN115632496A (en) 2019-08-23 2019-08-23 Food processor
CN201910786786.7A CN112421809B (en) 2019-08-23 2019-08-23 Motor, motor assembly, food processor, air supply device and household appliance
PCT/CN2020/106508 WO2021036691A1 (en) 2019-08-23 2020-08-03 Electric motor, electric motor assembly, food processor, air supply device and household appliance

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CN201910786786.7A CN112421809B (en) 2019-08-23 2019-08-23 Motor, motor assembly, food processor, air supply device and household appliance

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JP2002253896A (en) * 2001-03-02 2002-09-10 Matsushita Electric Ind Co Ltd Washing machine equipped with switched reluctance motor
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