CN112421877B

CN112421877B - Air supply device and household appliance

Info

Publication number: CN112421877B
Application number: CN201910786701.5A
Authority: CN
Inventors: 邱水兵; 罗伟锦; 叶似锦; 梁显堂; 陈炜杰
Original assignee: Midea Group Co Ltd; GD Midea Environment Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Environment Appliances Manufacturing Co Ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2022-05-31
Anticipated expiration: 2039-08-23
Also published as: CN112421877A; WO2021036188A1

Abstract

The invention provides an air supply device and a household appliance, wherein the air supply device comprises a motor, wherein the motor comprises: a rotor structure; and the stator structure is detachably connected with the rotor structure, and the stator structure is arranged on the inner side of the rotor structure along the radial direction and is used for driving the rotor structure to rotate. Through the technical scheme of the invention, when the motor is applied to drive the load to move, the load and the rotor structure can be detached together for cleaning or replacement, and the operation is convenient.

Description

Air supply device and household appliance

Technical Field

The invention relates to the technical field of motors, in particular to an air supply device and a household appliance.

Background

At present, fan motor commonly used comprises the stator and the rotor of establishing by inside and outside each other cover, when the motor drives externally, rotate the operation that realizes flabellum or other loads through the pivot of stator drive rotor and then drive the motor, wherein, stator and the coaxial setting of rotor, and need form enclosed construction in the circumferential direction, the pivot can outwards stretch out along the axial, thereby make because the restriction of the structure of motor self, can increase the ascending size of whole product in the axial direction, the mutual position inflexibility of stator and rotor simultaneously, be unfavorable for the lightweight design of product.

Disclosure of Invention

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

To this end, it is an object of the present invention to provide an electric machine.

Another object of the present invention is to provide an air blowing device.

It is a further object of the present invention to provide a household appliance.

In order to achieve the above object, a first aspect of the present invention provides a motor, including: a rotor structure; and the stator structure is detachably connected with the rotor structure, and the stator structure is arranged on the inner side of the rotor structure along the radial direction and is used for driving the rotor structure to rotate.

According to the motor in the technical scheme of the first aspect of the invention, the motor comprises the rotor structure and the stator structure, the driving shaft of the traditional motor is omitted, the coreless motor is formed, the arrangement mode of the motor and the load is changed, and the motor and the load are not required to be arranged along the axial direction, so that the size of the motor in the axial direction can be reduced, the space occupation is effectively reduced, and the design of light weight and miniaturization is facilitated. In addition, the stator structure is arranged on the inner side of the rotor structure along the radial direction, so that the arrangement position of the structure of the stator in the conventional motor is changed, namely the stator structure does not need to form an annular closed structure or a symmetrical structure in the inner or outer periphery of the rotor structure, and only needs to be arranged on the inner side of the rotor structure along the radial direction to drive the rotor structure to rotate, so that the load is driven to move; meanwhile, the overall volume and weight of the motor can be further reduced through the improvement of the arrangement position of the stator structure, and especially the space occupation of the motor in the axial direction can be reduced.

The motor is characterized in that the rotor structure is arranged on the stator, and the stator structure is detachably connected with the rotor structure.

It should be emphasized that, the stator structure is correspondingly arranged on the inner side of the rotor structure according to the arrangement position of the rotor structure, on one hand, the motor is integrally formed into an eccentric structure, the arrangement position of the stator structure is more flexible, so that the motor can be applied to loads of various different structures, on the other hand, the stator structure is hidden and arranged in the rotor structure, the occupied space of the whole motor is reduced, for the whole motor, the outer boundary is only an area surrounded by the rotor structure, the stator structure does not occupy extra space, and the size of the whole motor in the radial direction can be further reduced.

The whole rotor structure can be circular ring, square ring, elliptical ring or other closed rings.

In addition, the motor in the above technical solution provided by the present invention may further have the following additional technical features:

in the above technical solution, the motor includes a driving area, the driving area includes at least one stator core, and a portion of the rotor structure directly opposite to the stator structure.

In the technical scheme, the motor comprises a driving area, specifically, the driving area comprises at least one stator core and a part of the rotor structure, which is opposite to the stator structure, i.e. the rotor structure is driven to rotate by the driving force generated by the stator core in the driving area to the part of the rotor structure, which is opposite to the stator core. The stator core is fixed, so that when the rotor structure rotates, the part of the rotor structure opposite to the stator structure in the driving area is changed, but the tangential driving force applied to the whole rotor structure is unchanged, so that the rotor structure is driven to continuously rotate, and the motor is operated.

The number of the driving regions may be one or more.

In the above technical scheme, the stator structure has a first curved surface facing the rotor structure, the first curved surface is arc-shaped, the rotor structure is ring-shaped, and the curvature of the side of at least part of the stator structure facing the rotor structure is the same as that of the rotor structure.

In the technical scheme, the rotor structure is limited to be in a circular ring shape, the stator structure is provided with the first curved surface facing the arc shape of the rotor structure, and the curvature of at least part of the first curved surface is the same as that of the rotor structure, so that the first curved surface and the rotor structure are at equal intervals, and therefore the driving force formed by at least part of the stator structure on the rotor structure is kept balanced, and the stability of the rotor structure in the rotating process is improved.

It will be appreciated that at least part of the arc of the first curved surface is parallel to the arc of the rotor structure.

In the above technical scheme, the first curved surface is arc-shaped, the rotor structure is circular, and the curvature of the first curved surface is the same as that of the rotor structure.

In this technical scheme, be the ring shape through injecing the rotor structure, first curved surface is arc, and the camber of first curved surface is the same with the camber of rotor structure for the whole equidistant setting that forms of stator structure and rotor structure, thereby make the drive power that the stator structure formed to the rotor structure keep invariable throughout in the rotor structure rotation process, can further improve the stability of rotor structure rotation process. It can be understood that if the driving force of the stator structure to the rotor structure changes, the rotation speed of the rotor structure is easily changed, and the rotation stability of the rotor structure is affected.

Wherein, the cambered surface of first curved surface and the cambered surface of rotor structure are parallel all the time.

In the above technical solution, the maximum distance between the rotor structure and the stator structure is not greater than 4 mm.

The maximum distance between the rotor structure and the stator structure is not more than 4mm, so that a gap can be kept between the rotor structure and the stator structure, the stator structure is prevented from interfering the rotation of the rotor structure, the driving force generated by the stator structure to the rotor structure is enabled to be as large as possible, and the rotation efficiency of the rotor structure is improved.

Alternatively, the driving effect is optimized when no barrier is arranged between the stator structure and the rotor structure.

In the above technical solution, the rotor structure specifically includes at least one magnetic member.

In this technical scheme, rotor structure includes at least one magnetism spare, through the magnetic field of the stator winding on the stator core that corresponds the setting with magnetism spare, produces the effort to magnetism spare, and the effort direction that a plurality of magnetism spares received is the same to drive magnetism spare and rotate, realize the motion of load. It can be understood that the longer the magnetic member is in the circumferential direction, the longer the magnetic force of the stator structure acts on the magnetic member, and even if the rotor structure only includes one magnetic member, the continuous rotation can be realized by the stator structure as long as the magnetic member is long enough in the circumferential direction. .

In the above technical solution, the stator structure includes at least two stator teeth disposed on at least one stator core and disposed toward the rotor structure.

In this technical scheme, be equipped with the stator tooth on the stator core, be provided with two at least stator teeth that are equipped with stator winding towards rotor structure on restricting at least one stator core to through the magnetic field effort of two stator tooth forms rotor structure in pairs, drive rotor structure and take place to rotate, and then drive the load operation.

The stator structure includes at least two stator teeth, and the at least two stator teeth may be disposed on one stator core or on a plurality of stator cores, that is, the number of the stator cores is one or more, and the total number of the stator teeth on all the stator cores is at least two.

In the technical scheme, the number of the stator teeth is at least two, and the stator windings on any two stator teeth are sequentially electrified and have the same polarity; or the number of the stator teeth is at least two, the stator windings on any two stator teeth are electrified simultaneously and have different polarities, and the magnetic poles of the stator windings on any two stator teeth are alternated.

In the technical scheme, the stator core is provided with at least two stator teeth, and the stator windings on any two stator teeth are sequentially electrified and have the same polarity, so that the rotor structure is sequentially acted by the stator windings on the two stator teeth to generate acting force in the same direction, and the rotor structure continuously rotates in the same direction; in addition, the stator windings on any two stator teeth can be electrified at the same time and have different polarities, and the magnetic poles of the stator windings on any two stator teeth are alternated to generate continuous acting force in the same direction on the rotor structure so as to drive the rotor structure to rotate continuously in the same direction.

It is understood that at least two stator teeth may be provided on the same stator core, or on different stator cores.

In the above technical solution, the end face of the stator tooth shoe of each stator tooth is arranged along the radial direction of the rotor structure, and the end face of the stator tooth shoe is arranged far away from the rotating shaft of the rotor structure along the radial direction of the rotor structure.

In the technical scheme, the end face of the stator tooth shoe of each stator tooth is limited to be arranged along the radial direction of the rotor structure, and the end face of the stator tooth shoe is arranged far away from the rotating shaft of the rotor structure along the radial direction of the rotor structure, so that each stator tooth is arranged corresponding to the rotor structure, and each stator core can generate acting force along the tangential direction on the rotor structure to drive the rotor structure to rotate along the same direction.

In the above technical solution, the stator structure includes a stator core having three stator teeth, and distances from end faces of stator tooth shoes of the three stator teeth to a rotation center of the rotor structure are all equal, wherein the end faces of the stator tooth shoes of the three stator teeth form an outward convex arc shape.

In the technical scheme, the stator structure comprises the stator core with three stator teeth, and the distances from the end surfaces of the stator tooth shoes of the three stator teeth to the rotation center of the rotor structure are equal, so that the rotation center of the rotor structure and the end surfaces of the stator tooth shoes of each stator tooth keep the same distance, the size of the magnetic field acting force applied to the rotor structure in the rotating process is kept balanced, and the stability of the motor in the operating process is improved.

The end surfaces of the stator tooth shoes limiting the three stator teeth form an outward convex arc shape, so that the end surfaces of the stator tooth shoes are matched with the annular shape of the rotor structure, and the stator tooth shoes are prevented from interfering with the rotor structure arranged on a load.

The number of the stator cores with the three stator teeth can be one or multiple, and the plurality of stator cores can be uniformly distributed or asymmetrically arranged.

In the technical scheme, the number of the stator teeth is at least three, and the stator windings on any two stator teeth are sequentially electrified and have the same polarity; or the number of the stator teeth is at least three, the stator windings on any two stator teeth are electrified simultaneously and have different polarities, and the magnetic poles of the stator windings on any two stator teeth are alternated.

In the technical scheme, the number of the stator teeth on the stator core is limited to be at least three, and the stator windings on any two stator teeth are sequentially electrified and have the same polarity, so that the rotor structure is sequentially acted by the stator windings on the two stator teeth to generate acting force in the same direction, and the rotor structure continuously rotates in the same direction; in addition, the stator windings on any two stator teeth can be electrified at the same time and have different polarities, and the magnetic poles of the stator windings on the two stator teeth are alternated to generate continuous acting force in the same direction on the rotor structure so as to drive the rotor structure to rotate continuously in the same direction.

For example, the number of the stator teeth of the stator structure is three, two adjacent stator windings are simultaneously electrified, specifically, the first stator winding and the second stator winding are electrified, and then the second stator winding and the third stator winding are electrified, wherein the first stator winding generates an N-pole magnetic field to attract the S-pole of the magnetic member in the rotor structure, the second stator winding generates an S-pole magnetic field to attract the N-pole of the magnetic member in the rotor structure, a tangential acting force is integrally formed on the rotor structure, then the second stator winding and the third stator winding are electrified, the second stator winding generates an N-pole magnetic field to repel the N-pole of the magnetic member, the third stator winding generates an S-pole magnetic field to repel the S-pole of the magnetic member, so that the rotor assembly continues to rotate, and the rotor assembly continuously rotates by circulating.

Particularly, the motor can also realize reverse operation by adjusting the electrifying sequence of the three stator windings, in short, the third stator winding and the second stator winding are electrified firstly, and then the second stator winding and the first stator winding are electrified to realize reverse rotation.

In the above technical solution, the motor further includes a magnetic determination device, and the magnetic determination device is disposed along a circumferential direction of the rotor structure and is used for obtaining a rotation direction of the rotor structure relative to the stator structure.

In this technical solution, the magnetic determination device disposed in the circumferential direction of the rotor structure is used to obtain the rotation direction of the rotor structure relative to the stator structure, so that the rotor structure rotates in a certain direction, for example, clockwise or counterclockwise.

The magnetic judging device can be a Hall element, and can also be other sensors for detecting magnetism so as to determine the rotating direction of the rotor structure and reduce the occurrence of abnormal rotation such as stalling or reversion.

Specifically, when the stator structure comprises two stator teeth, the rotor structure can be driven by respectively electrifying or simultaneously electrifying the windings on the two stator teeth, specifically, when the stator structure is respectively electrified, the N pole is firstly electrified by the first stator winding, the magnetic part of the S pole on the rotor structure is attracted to move towards the first stator winding, the polarity of the magnetic part corresponding to the second stator winding is the N pole, then, the N pole is electrified by the second stator winding, the rotor is driven to rotate by repulsive force, and the two stator windings are sequentially electrified to realize rotation; when the two stator windings are electrified simultaneously, the magnetic poles of the two stator windings after being electrified are opposite, for example, the magnetic poles of the two stator windings are electrified for the first time and are respectively N-S, and when the rotor rotates to the corresponding position, the magnetic poles of the stator windings are adjusted to be S-N, so that repulsion force is generated on the current rotor to form rotation.

In the above technical scheme, the number of the stator cores is a plurality of, and the plurality of stator cores are arranged along the circumferential direction of the rotor structure.

In the technical scheme, the plurality of stator cores are limited to be arranged along the circumferential direction of the rotor structure, and each stator core is provided with at least one stator tooth, so that the distance between the rotor structure part corresponding to the stator structure and the stator structure is kept consistent, and the stress balance of the rotor structure in the radial direction is facilitated. Further, when a plurality of stator core evenly set up along rotor structure's circumference, help rotor structure in the atress equilibrium of circumference direction, alleviateed the vibration that the rotor subassembly produced at the rotation in-process to keep rotor structure to rotate the stability of in-process, and then reduced the noise that the motor produced at the working process, prolonged the life of motor. In addition, increase the quantity of stator tooth, can increase the holistic magnetic field effort of stator structure to accelerate rotor structure's slew rate, consequently, can set up corresponding quantity's stator tooth according to the rotational speed demand of load, thereby enlarge the application range of motor.

In the above technical solution, the motor further includes: the supporting structure, rotor structure rotationally locates on the supporting structure.

In this technical scheme, through rotationally locating bearing structure with rotor structure on to radial displacement or axial displacement through bearing structure restriction rotor structure, the axis that makes rotor structure rotate under stator structure's magnetic force effect when not taking place the skew, thereby carries out stable power take off to the load, is favorable to keeping the stability of motor. It can be understood that the stator structure is arranged on one side of the rotor structure, the stress of the whole rotor structure is not balanced, and the rotor structure is limited by the supporting structure.

Specific forms of the supporting structure include but are not limited to a fixed shaft, a bearing, a fixed turntable and a magnetic suspension device.

In above-mentioned technical scheme, bearing structure is the back shaft, and the motor still includes: the casing is equipped with the back shaft on, and stator structure sets firmly on the casing to through stator structure drive rotor around the back shaft rotation.

In the technical scheme, the motor further comprises a shell, the supporting structure is a supporting shaft arranged on the shell, and the supporting structure is rotatably arranged on the supporting shaft through the rotor structure so that the rotor structure rotates around the supporting shaft to prevent the rotor structure from generating radial displacement; and fix the stator structure on locating the casing to make the relative distance between rotor structure and the stator structure keep unchangeable, in order to prevent that the stator structure from receiving the reaction force of rotor structure and taking place the displacement, in order to avoid influencing rotor structure pivoted stability.

In the above technical solution, the magnetic members are continuously arranged in the circumferential direction.

In the technical scheme, the magnetic parts are continuously arranged on the side surface of the rotor structure along the circumferential direction, so that the rotor structure forms an annular belt-shaped structure, the rotor structure is subjected to balanced magnetic force in the rotating process, and the stability of the rotor structure in the rotating process is favorably maintained.

In the technical scheme, the magnetic parts are uniformly arranged along the circumferential direction, and a circumferential gap exists between any two adjacent magnetic parts.

In this technical scheme, through with magnetic part along circumference evenly arranged on the side of rotor structure, and arbitrary two adjacent magnetic parts directly have the circumference clearance, make rotor structure form discontinuous structure, and a plurality of magnetic parts etc. arrange along circumference interval for the size and the direction of the magnetic force that every magnetic part received are the same, thereby keep rotor structure to rotate the stability of in-process.

In the above technical solution, the magnetic member is an integral structure.

In this technical scheme, as an organic whole structure through setting up the magnetic part to the installation and the spacing of magnetic part have reduced the clearance between a plurality of magnetic parts and consequently and the rocking that leads to, help reducing the magnetic part and take place the possibility of removing.

In a second aspect of the present invention, an air supply device is provided, including the motor in the first aspect; the fan blade is provided with a concave cavity on the end face of the fan blade, the stator structure is arranged in the concave cavity, and the rotor structure of the motor, which comprises a plurality of magnetic parts, is arranged outside and/or inside the fan blade so as to drive the fan blade to rotate along with the rotor structure under the action of the stator structure.

According to the air supply device in the second aspect of the present invention, the air supply device includes the motor in the first aspect of the present invention, so that the air supply device has all the beneficial effects of the motor in the first aspect of the present invention, and details thereof are not repeated herein. In addition, air supply arrangement still includes the flabellum, and the terminal surface of flabellum is equipped with the cavity, and stator structure locates the cavity, and the rotor structure of motor locates outside the flabellum and/or in, and the load of motor is the flabellum promptly, through corresponding the stator structure who sets up in the cavity of flabellum with rotor structure, produces magnetic force effect to rotor structure to drive the flabellum and driven together along with rotor structure and rotate, realize air supply arrangement's operation. The stator structure is arranged in the concave cavity of the fan blade, so that the hidden arrangement of the stator structure can be realized, the size of the radial direction and the axial direction of the air supply device is reduced, and the lightweight design of the air supply device is facilitated.

The rotor structure may be provided on the outer wall surface or the inner wall surface of the fan blade alone, or may be provided on both the outer wall surface and the inner wall surface of the fan blade. It will be appreciated that the drive to the fan blades may be enhanced by providing a plurality of rotor structures.

In the above technical solution, the rotor structure is disposed on the outer side wall surface of the fan blade.

In the technical scheme, the rotor structure is arranged on the outer side wall surface of the fan blade, and the stator structure is arranged in the cavity of the fan blade, so that the stator core of the stator structure is arranged opposite to the rotor structure along the radial direction of the rotor structure, and generates corresponding magnetic force to drive the rotor structure to rotate. The rotor structure is arranged on the outer side wall surface of the fan blade, so that on one hand, the force arm of the fan blade is increased, the rotating efficiency is improved, and on the other hand, the installation of the rotor structure is facilitated.

It can be understood that the rotor structure can produce the power along the tangential direction after receiving stator structure's magnetic action to drive rotor structure and drive the flabellum and rotate, if rotor structure is too close to the rotation center of flabellum, can cause the arm of force of the stress point of flabellum to shorten, under same magnetic action, the acting descends, leads to the rotation efficiency reduction of flabellum.

In the above technical solution, the rotor structure is disposed on the inner sidewall surface of the fan blade.

In the technical scheme, the rotor structure is arranged on the inner side wall surface of the fan blade, and the stator structure is arranged in the cavity, so that the stator core of the stator structure is arranged opposite to the rotor structure along the radial direction of the rotor structure, and generates corresponding magnetic force to drive the rotor structure to rotate. The rotor structure locates the inside wall face of flabellum, is favorable to reducing the interval between rotor structure and the stator structure, and reinforcing magnetic force effect increases drive power.

In the above technical solution, the fan blade specifically includes: the fan comprises a first fan blade support and a plurality of first fan blades, wherein the first fan blades are arranged on the outer side wall surface of the first fan blade support along the circumferential direction of the fan blades.

In this technical scheme, the flabellum specifically includes first fan blade support and a plurality of first fan blade, locates on the outside wall of first fan blade support along the circumference of flabellum through a plurality of first fan blades to make first fan blade support rotate under rotor structure's drive, thereby make a plurality of first fan blades on locating the outside wall of first fan blade support disturb the air, produce the air current, realize air supply arrangement's air supply operation.

Further, the fan blade further includes: and the second fan blade support is coaxially arranged with the first fan blade support, and the second fan blade support is sleeved outside the first fan blade.

In the technical scheme, the second fan blade support which is coaxial with the first fan blade support is arranged outside the first fan blade, so that the first fan blade can be fixed through the first fan blade support on the inner side and the second fan blade support on the outer side at the same time, and the stability and the service life of the fan blade during rotation are favorably improved.

Further, the fan blade further includes: and the second fan blades are arranged on the outer side wall surface of the fan blades along the circumferential direction of the fan blades.

In the technical scheme, the plurality of second fan blades are arranged on the outer side wall surface of the fan blade along the circumferential direction, so that the fan blade can form an inner circle of fan blades and an outer circle of fan blades, and the airflow is increased. It should be noted that the first fan blade and the second fan blade may be the same type of fan blade, or may be different types of fan blades, for example, the first fan blade and the second fan blade have different shapes, or different sizes, or different inclination angles. In addition, through locating a plurality of first fan blades and a plurality of second fan blade of inside and outside two rings of flabellum, still be favorable to the diffusion motion to the air current that the flabellum was seen off for the air current is softer, is favorable to improving air supply device's air supply comfort level.

In the technical scheme, the rotor structure is arranged on the inner side wall surface of the first fan blade support; and/or the rotor structure is arranged on the inner side wall surface of the second fan blade support.

In the technical scheme, the fan blade structure comprises a first fan blade support and a second fan blade support which are coaxially arranged, the first fan blade support is arranged on the inner side of the second fan blade support, and at the moment, the rotor structure can be arranged on the inner side wall surface of the first fan blade support, so that the distance between the rotor structure and the stator structure can be reduced, the magnetic action can be enhanced, and the driving force can be increased; the rotor structure can also be arranged on the inner side wall surface of the second fan blade support, so that the force arm of the stressed fan blades can be prolonged, and the rotating efficiency can be improved. Of course, the rotor structures may be disposed on the inner sidewall surface of the first fan blade support and the inner sidewall surface of the second fan blade support at the same time, so as to further increase the driving force of the stator structure to the rotor structure through a plurality of rotor structures.

In the above technical solution, the air supply device further includes: the first fan housing and the second fan housing are detachably connected, a containing cavity capable of containing at least the rotor structure is formed inside the second fan housing after the second fan housing is connected with the first fan housing, wherein the stator structure is arranged in the containing cavity, and/or the stator structure is arranged outside the containing cavity.

In the technical scheme, the air supply device further comprises a first air cover and a second air cover, the first air cover and the second air cover are detachably connected and then internally form an accommodating cavity, the rotor structure is accommodated in the accommodating cavity along with the fan blades, and the stator structure can be correspondingly arranged at a plurality of positions; when the stator structure is arranged outside the accommodating cavity, the occupied space is favorably reduced, and the stator structure is convenient to disassemble and assemble; when the stator structure comprises a plurality of stator cores, the stator cores can be arranged in the accommodating cavity and outside the accommodating cavity at the same time. In addition, the first fan cover and the second fan cover can be detached, so that the motor and the fan blades can be maintained or cleaned.

In the above technical solution, the support structure of the motor is disposed on a side of the first wind cover facing the second wind cover.

In this technical scheme, through locating first fan housing one side towards the second fan housing with bearing structure, bearing structure locates on first fan housing promptly, and bearing structure is in the accommodation space after first fan housing is connected with the second fan housing, supports the flabellum that is equipped with rotor structure through bearing structure to prevent that the flabellum from taking place the skew in the rotation process.

In the above technical solution, the first fan housing and/or the second fan housing are provided with a ventilation grille.

In the technical scheme, the ventilation grids are arranged on the first fan housing and/or the second fan housing, so that when the fan blades rotate, airflow flows through the ventilation grids on the first fan housing and/or the second fan housing, and the air supply operation of the air supply device is realized. Specifically, the ventilation grille may be disposed along an axial direction of the fan blade, or may be disposed along both the axial direction and a radial direction of the fan blade.

In the above technical scheme, the supporting structure of the motor is in a hollow shaft shape, and the fan blades are sleeved on the supporting structure.

In this technical scheme, be the hollow shaft form through setting up bearing structure, on bearing structure was located to the flabellum cover to through motor drive flabellum pivoted in-process, bearing structure's hollow structure can form the wind passageway, so that the air can be passed through the wind passageway flow direction other end by the one end of flabellum, thereby increase air supply arrangement's air-out air current, be favorable to keeping the stability of air-out air current. It can be understood that when the position of the rotating shaft of the fan blade is not provided with an air passage, the air flow can be blocked locally, and the air flow at the air outlet side of the air supply device is easy to generate cyclone, so that the air flow is disturbed.

In the above technical scheme, the bearing structure of motor is solid axle form, and air supply arrangement still includes: the shaft sleeve is sleeved on the supporting structure, and the fan blades are sleeved on the shaft sleeve.

In this technical scheme, the bearing structure of motor is solid axiform, through the cover on bearing structure being equipped with the axle sleeve, and the flabellum cover is located on the axle sleeve to reduce the frictional force between flabellum and the bearing structure through the axle sleeve, thereby reduce the wearing and tearing of flabellum, improve the rotation efficiency of flabellum, convenient maintenance and change are favorable to reducing use cost simultaneously. It can be understood that if the fan blades are directly connected with the supporting structure in a rotating mode, the fan blades need to be integrally replaced when the abrasion reaches a certain degree, and the fan blades are connected with the supporting structure in a rotating mode through the shaft sleeves, and only the shaft sleeves need to be replaced.

In the above technical scheme, the air supply device further comprises a base, the stator structure is arranged on the base, and the base is detachably connected with the fan blades.

In the technical scheme, the base detachably connected with the fan blades is arranged, so that the air supply device is convenient to use, and the fan blades are convenient to clean and maintain; and the stator structure is arranged on the base, namely the stator structure can be independently detached from the rotor structure, and the stator structure and the rotor structure are convenient to clean and maintain respectively. It can be understood that the stator and the rotor of the commonly used motor are usually installed as a whole, the interior of the motor cannot be cleaned, and impurities such as dust attached to the interior of the motor easily affect the normal operation of the motor.

In a third aspect of the present invention, there is provided a household appliance, including the motor in the first aspect; the rotating assembly is arranged on the rotor structure of the motor, and the stator structure of the motor corresponds to the rotor structure so that the rotating assembly is driven to rotate along with the rotor structure under the action of the stator structure.

According to the household appliance in the third aspect of the present invention, the household appliance includes the motor and the rotating component in the first aspect of the present invention, and the rotating component is provided with the rotor structure of the motor, so that the rotating component is driven to rotate along with the rotor structure under the action of the stator structure corresponding to the rotor structure, so as to implement the operation of the household appliance.

In the above technical scheme, the household appliance is a desk fan, a ceiling fan, a wall fan, a tower fan, a cooling fan, a warm air blower, a purifier, an air conditioner, a washing machine, a range hood, a bread maker or a wall breaking machine.

In this technical scheme, domestic appliance can be many forms, and specifically, domestic appliance is platform fan, ceiling fan, wall fan, tower fan, thermantidote, electric fan heater, clarifier, air conditioner, washing machine, lampblack absorber, bread machine or broken wall machine, all can be through the motor drive operation in the above-mentioned first aspect technical scheme, therefore has the whole beneficial effect of the motor in the above-mentioned first aspect technical scheme, and it is no longer repeated here.

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 shows a schematic structural view of an electric machine according to an embodiment of the invention;

fig. 2 shows a schematic structural view of a stator core according to an embodiment of the present invention;

fig. 3 shows a schematic structural view of an electric machine according to an embodiment of the invention;

FIG. 4 shows a schematic view of a rotor structure according to an embodiment of the invention;

fig. 5 shows a schematic structural view of an electric machine according to an embodiment of the invention;

FIG. 6 is a schematic structural view of an air supply device according to an embodiment of the present invention;

FIG. 7 is a schematic view of a fan blade according to an embodiment of the invention;

FIG. 8 is a schematic cross-sectional view of an air supply apparatus according to an embodiment of the present invention;

FIG. 9 is a schematic structural view of an air supply apparatus according to an embodiment of the present invention;

fig. 10 is a schematic cross-sectional view of an air blowing device according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 10 is:

1 motor, 12 rotor structure, 122 magnetic part, 14 stator structure, 142 stator core, 144 stator teeth, 1442 stator tooth shoe, 16 supporting structure, 2 air supply device, 21 air passing channel, 22 fan blade, 24 first fan cover, 26 second fan cover, 28 ventilation grid, 30 shaft sleeve and 32 base.

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 will be rendered by reference to the appended drawings. 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 in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The invention provides an embodiment of an air supply device 2, wherein the air supply device 2 comprises a motor 1 which is formed by combining a stator structure 14 and a rotor structure 12 to form an eccentric center, and fan blades 22 which are directly contacted with the rotor structure 12, wherein the rotor structure 12 comprises a plurality of magnetic parts 122 which form a closed graph, the stator structure 14 is arranged at one or more positions of the inner side, the outer side, the inner end and the outer end of an annular structure formed by the plurality of magnetic parts 122, when the current direction of a stator winding which is wound on a stator tooth 144 in the stator structure 14 is controlled, magnetic fields with different polarities can be generated, at the moment, the rotor structure 12 can be driven through at least two stator windings with different polarities, and the rotor structure 12 drives a load to rotate.

Optionally, the plurality of magnetic members 122 surround to form a ring, and further optionally, gaps exist among the plurality of magnetic members 122 to form an interrupted ring.

The eccentric motor 1 means that the stator structure 14 is located at one side or one end of the rotor structure 12, and may be at one end in the axial direction or one end in the radial direction, so that the stator structure 14 forms a discontinuous magnetic field.

It will be appreciated that the fan blades 22 are only one representation of a load, and that the load may also vary when the motor 1 is used on different products, for example, when applied to a drum washing machine, the load may be a drum inside the washing machine, and when applied to a wall breaking or juice extractor, the load may be a blade. In addition, the load can also be a rotating component in a floor fan, a ceiling fan, a wall fan, a tower fan, a cooling fan, a warm air blower, a purifier, an air conditioner, a washing machine, a range hood, a bread maker or a wall breaking machine.

A motor and an air blowing device according to some embodiments of the present invention will be described below with reference to fig. 1 to 10.

Example one

As shown in figure 1 of the drawings, in which,

as shown in fig. 1 to 4, one embodiment of the present application proposes an electric machine 1 comprising a rotor structure 12 and a stator structure 14, which are detachably connected. Wherein, rotor structure 12 is the ring shape, stator structure 14 locate rotor structure 12 the inboard and with rotor structure 12 between have the clearance, stator structure 14 includes at least one stator core 142 that sets up along rotor structure 12 circumference to form drive power to rotor structure 12 through stator core 142, and then drive rotor structure 12 and rotate. The motor 1 is provided with a driving area, the driving area comprises a stator core 142 and a part of the rotor structure 12 opposite to the stator structure 14, so that the stator structure 14 and the rotor structure 12 in the driving area interact with each other to generate a driving force for driving the rotor structure 12 to rotate; in the driving area, the position of the stator structure 14 is kept fixed, the part of the rotor structure 12 opposite to the stator structure 14 changes along with the rotation of the rotor structure 12, but the part of the rotor structure 12 opposite to the stator structure 14 in the driving area is under the same driving force, and the rotor structure 12 is driven to continuously rotate along the same direction.

Further, the stator structure 14 may include three stator teeth 144, wherein the sides of the stator teeth 144 facing the rotor structure 12 on two sides are arc-shaped surfaces, the curvature of the arc-shaped surfaces is the same as the curvature of the rotor structure 12, and the sides of the stator teeth 144 facing the rotor structure 12 in the middle are flat surfaces.

Further, the stator structure 14 may include three stator teeth 144, and each side of the stator teeth 144 facing the rotor structure 12 is a circular arc surface, and the curvature of the circular arc surface is the same as that of the rotor structure 12.

Alternatively, as shown in fig. 3, the maximum clearance h between the rotor structure 12 and the stator structure 14 is not greater than 4 mm.

Further, the gap between the rotor structure 12 and the stator structure 14 is 1mm, 2mm, 3mm, 4 mm.

Example two

Another embodiment of the present application provides a motor 1, including rotor structure 12 and the stator structure 14 that can dismantle the connection, wherein, rotor structure 12 is the ring shape, stator structure 14 locate rotor structure 12 the inboard and with rotor structure 12 between have the clearance, stator structure 14 includes at least one stator core 142 along rotor structure 12 circumference setting to form drive power to rotor structure 12 through stator core 142, and then drive rotor structure 12 and rotate. As shown in fig. 2, the stator structure 14 includes a stator core 142 having three stator teeth 144, and the stator teeth 144 are provided with windings, the two adjacent stator windings have different polarities, and the stator structure 14 generates a magnetic field to drive the rotor structure 12 to rotate by simultaneously energizing the two adjacent stator windings, specifically, the first stator winding and the second stator winding are energized first, so that the first stator winding generates an N-pole magnetic field to attract the S-pole of the magnetic member 122 in the rotor structure 12, the second stator winding generates an S-pole magnetic field to attract the N-pole of the magnetic member 122 in the rotor structure 12, so as to form an acting force in a tangential direction on the whole rotor structure 12, and after the rotor structure 12 rotates for a distance under the acting force, the second stator winding and the third stator winding are energized, so that the second stator winding generates an N-pole magnetic field to repel the N-pole of the magnetic member 122, the third stator winding generates an S-pole magnetic field to repel the S-pole of the magnetic member 122, so that the rotor assembly continues to rotate, and the rotation is repeated to continuously rotate the rotor assembly. Furthermore, by changing the sequence of energization of the three stator windings, a reverse rotation of the rotor structure 12 is also achieved.

Further, the end surfaces of the stator tooth shoes 1442 of the three stator teeth 144 are all arc surfaces, and the distance from the end surface of each stator tooth shoe 1442 to the rotor structure 12 is equal.

EXAMPLE III

Another embodiment of the present application provides an electric machine 1 comprising a rotor structure 12 and a stator structure 14, the rotor structure 12 being removably connected to the rotor structure 12. Wherein, rotor structure 12 is the ring shape, stator structure 14 locate one side of rotor structure 12 and with rotor structure 12 between have the clearance, stator structure 14 includes at least one stator core 142 that sets up along rotor structure 12 circumference to form drive power to rotor structure 12 through stator core 142, and then drive rotor structure 12 and rotate.

As shown in fig. 4, the rotor structure 12 includes a plurality of magnetic members 122, and the stator structure 14 is disposed corresponding to the magnetic members 122. Wherein the plurality of magnetic members 122 are continuously arranged in the circumferential direction.

Further, as shown in fig. 4, the magnetic member 122 is a magnetic sheet, and the plurality of magnetic sheets form a ring structure.

In another embodiment, the plurality of magnetic members 122 are uniformly arranged along the circumferential direction, and a circumferential gap exists between any two adjacent magnetic members 122.

Example four

Another embodiment of the present application provides an air supply device 2, as shown in fig. 5, the air supply device 2 includes an electric motor 1 formed by combining a stator structure 14 and a rotor structure 12 to form an eccentric center, and a fan blade 22 directly contacting with the rotor structure 12, wherein a plurality of magnetic members 122 are disposed on an outer side wall surface, the stator structure 14 is disposed on an inner side of an annular structure formed by the plurality of magnetic members 122, when controlling a current direction of a stator winding wound on a stator tooth 144 in the stator structure 14, magnetic fields of different polarities can be generated, at this time, the rotor structure 12 can be driven by at least two stator windings with different polarities, so that the rotor structure 12 drives a load to rotate.

In this embodiment, strong magnetism class material can be selected to the magnetic part among the rotor structure to guarantee that stator structure accessible interval h produces the drive effect to the rotor structure, can understand that there is the flabellum in the radial direction of the two in this embodiment, can choose for use to make the flabellum to the less material of magnetic field influence, with the influence that reduces the drive to stator structure.

EXAMPLE five

Another embodiment of the present application provides an air supply device 2, as shown in fig. 6, the air supply device 2 includes an electric motor 1 formed by combining a stator structure 14 and a rotor structure 12 to form an eccentric center, and fan blades 22 directly contacting with the rotor structure 12, wherein the rotor structure 12 includes a plurality of magnetic members 122 forming a closed pattern, the stator structure 14 is disposed in an annular structure formed by the plurality of magnetic members 122 and is correspondingly disposed, so as to generate magnetic fields with different polarities when controlling a current direction of a stator winding wound on a stator tooth 144 in the stator structure 14, at this time, the rotor structure 12 can be driven by at least two stator windings with different polarities, so that the rotor structure 12 drives a load to rotate. Air supply arrangement 2 still includes first fan housing 24 and the second fan housing 26 of connection of dismantling, and second fan housing 26 is connected the inside cavity that holds that forms of back with first fan housing 24, and rotor structure 12 and stator structure 14 are located and are held in the cavity, and of course, stator structure 14 also can be located outside holding the cavity correspondingly, or a plurality of stator core 142 of stator structure 14 locate simultaneously and hold in the cavity or outside.

The structure of the fan blade is as shown in fig. 7, the whole fan blade is annular, a plurality of grooves for accommodating the magnetic parts are arranged on the inner wall, and each magnetic part of the rotor structure is respectively arranged in the groove so as to realize the annular rotor structure.

Further, as shown in fig. 8, the supporting structure 16 is disposed on a side of the first wind shield 24 facing the second wind shield 26, so that when the first wind shield 24 is connected to the second wind shield 26, the supporting structure 16 is disposed in the accommodating cavity.

Further, as shown in fig. 6, the first wind cover 24 and the second wind cover 26 are both provided with ventilation grilles 28, and the ventilation grilles 28 extend outward in the radial direction to the side of the first wind cover 24 and the side of the second wind cover 26, respectively.

Further, as shown in fig. 8, the supporting structure 16 is a solid shaft, a shaft sleeve 30 is sleeved on the supporting structure 16, the fan blade 22 is sleeved on the shaft sleeve 30, and the fan blade 22 is rotatably connected with the supporting structure 16 through the shaft sleeve 30.

Fig. 9 shows another form of the support structure 16, i.e. the support structure 16 is a hollow shaft. The fan 22 is sleeved on the supporting structure 16, and the hollow portion of the supporting structure 16 forms an air passing channel 21, so that air can flow from one end of the fan 22 to the other end through the air passing channel 21.

EXAMPLE six

Another embodiment of the present application provides an air supply device 2, as shown in fig. 10, which includes an electric motor 1 formed by combining a stator structure 14 and a rotor structure 12 to form an eccentric center, and a fan blade 22 directly contacting with the rotor structure 12, wherein the rotor structure 12 includes a plurality of magnetic members 122 forming a closed pattern, the stator structure 14 is disposed in an annular structure formed by the plurality of magnetic members 122 and is disposed correspondingly, so as to generate magnetic fields with different polarities when controlling a current direction of a stator winding wound on a stator tooth 144 in the stator structure 14, and at this time, the rotor structure 12 can be driven by at least two stator windings with different polarities, so that the rotor structure 12 drives a load to rotate. The air supply device 2 further comprises a base 32, the base 32 is detachably connected with the fan blades 22, the stator structure 14 is arranged on the base 32, and the stator structure 14 can be separated from the rotor structure 12 together with the base 32.

On the basis of any of the above embodiments, the shape of one side of the stator structure 14 facing the rotor structure 12 is adapted to the shape of the side of the rotor structure 12, that is, the stator structure 14 forms a convex structure, which is beneficial to keeping the same distance between each stator tooth of the stator structure 14 and the rotor structure 12 and the stress balance of the rotor structure 12, on the other hand, the distance between the stator structure 14 and the rotor structure 12 can be reduced by eliminating the special-shaped structure of the stator structure 14, which is beneficial to enhancing the acting force applied to the rotor structure 12.

It will be appreciated that if the side of the stator structure 14 facing the rotor structure 12 is provided with a profile structure, such as a protrusion, a groove, a step, etc., the distance between the stator structure 14 and the rotor structure 12 is increased to prevent the rotation of the rotor structure 12 from being interfered, so that the magnetic force of the stator structure 14 on the rotor structure 12 is weakened.

In addition, the motor 1 further includes a housing, and the supporting structure is a supporting shaft disposed on the housing, and is rotatably disposed on the supporting shaft through the rotor structure 12, so that the rotor structure 12 rotates around the supporting shaft to prevent the rotor structure 12 from radial displacement; and the stator structure 14 is fixed on the housing, so that the relative distance between the rotor structure 12 and the stator structure 14 is kept unchanged, and the stator structure 14 is prevented from being displaced by the reaction force of the rotor structure 12, so as to avoid affecting the stability of the rotation of the rotor structure 12.

The rotor structure 12 can rotate clockwise or counterclockwise relative to the stator structure 14, specifically, the rotation in the forward and reverse directions can be realized according to the rotation requirement of the load, so that different load requirements can be met, and the flexibility is high.

The technical scheme of the invention is described in detail in the above with reference to the accompanying drawings, when the motor is applied to drive the load to move, the load and the rotor structure can be detached together for cleaning or replacement, so that the operation is convenient, in addition, the stator core is arranged in the circumferential direction of the rotor structure, so that the size of the whole motor in the axial direction can be reduced, and the rotor structure can be driven in the circumferential direction to drive the load directly connected with the rotor to rotate.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are used broadly and should be construed to include, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. 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 of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present specification, the description of "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. An air supply device, comprising:

a motor including a rotor structure and a stator structure;

the stator structure is detachably connected with the rotor structure, is arranged on the inner side of the rotor structure along the radial direction and is used for driving the rotor structure to rotate;

the stator structure comprises at least one stator core and at least two stator teeth which are arranged on the stator core and face the rotor structure;

the stator windings on any two stator teeth are sequentially electrified and have the same polarity; or

The stator windings on any two stator teeth are electrified at the same time and have different polarities, and the magnetic poles of the stator windings on any two stator teeth are alternated;

the stator structure comprises a stator core with three stator teeth, the end surfaces of the stator tooth shoes of the three stator teeth are all equal in distance from the rotation center of the rotor structure,

the end surfaces of the stator tooth shoes of the three stator teeth form an outward convex arc shape;

the fan blade, be equipped with the cavity on the terminal surface of fan blade, stator structure locates in the cavity, the rotor structure of motor is located outside the fan blade and/or in, with under the stator structure's of motor effect, the drive the fan blade is along with rotor structure rotates.

2. The air supply arrangement of claim 1, wherein the motor includes a drive region, the drive region including at least one stator core, and a portion of the rotor structure opposite the stator structure.

3. The air supply arrangement of claim 1, wherein the stator structure has a first curved surface facing the rotor structure, the first curved surface is arcuate, the rotor structure is circular, and at least a portion of the first curved surface has a curvature that is the same as a curvature of the rotor structure.

4. The blowing device of claim 3, wherein the first curved surface is arcuate, the rotor structure is circular, and a curvature of the first curved surface is the same as a curvature of the rotor structure.

5. The air supply arrangement of claim 1, wherein the maximum distance of the rotor structure from the stator structure is less than 4 mm.

6. The air supply arrangement of claim 1, wherein the rotor structure includes at least one magnetic element.

7. The air supply arrangement according to claim 1, wherein an end face of the stator tooth shoe of each of the stator teeth is disposed away from the rotational axis of the rotor structure in a radial direction of the rotor structure.

8. The air supply arrangement according to claim 1,

the number of the stator teeth is at least three, and the stator windings on any two stator teeth are sequentially electrified and have the same polarity; or

The number of the stator teeth is at least three, the stator windings on any two of the stator teeth are electrified at the same time and have different polarities, and the magnetic poles of the stator windings on any two of the stator teeth are alternated.

9. The air supply arrangement of claim 1, wherein the motor further comprises a magnetic determination device disposed circumferentially of the rotor structure for capturing a rotational direction of the rotor structure relative to the stator structure.

10. The air supply device according to claim 8 or 9, wherein the number of the stator cores is plural, and the plural stator cores are arranged in a circumferential direction of the rotor structure.

11. The air supply apparatus of claim 6, further comprising:

and the rotor structure is rotatably arranged on the supporting structure.

12. The air supply device according to claim 6 or 11, wherein the magnetic members are arranged continuously in a circumferential direction.

13. The air supply device according to claim 6 or 11, wherein the magnetic members are uniformly arranged in the circumferential direction, and a circumferential gap exists between any two adjacent magnetic members.

14. The air supply device according to claim 6 or 11, wherein the magnetic member is of a unitary structure.

15. The blower of claim 1, wherein the rotor structure is provided on an outer wall surface of the fan blade.

16. The blower device of claim 1, wherein the rotor structure is provided on an inner sidewall surface of the fan blade.

17. The air supply arrangement of claim 16, wherein the fan blades comprise:

the fan comprises a first fan blade support and a plurality of first fan blades, wherein the first fan blades are arranged on the outer side wall surface of the first fan blade support along the circumferential direction of the fan blades.

18. The air supply arrangement of claim 17, wherein the fan blades further comprise:

the second fan blade support is coaxially arranged with the first fan blade support, and the second fan blade support is sleeved outside the first fan blade.

19. The air supply arrangement of claim 18, wherein the fan blades further comprise:

and the second fan blades are arranged on the outer side wall surfaces of the fan blades along the circumferential direction of the fan blades.

20. The air supply arrangement of claim 19, wherein the rotor structure is disposed on an inner sidewall surface of the first blade support; and/or the rotor structure is arranged on the inner side wall surface of the second fan blade support.

21. The air supply apparatus of claim 1, further comprising:

the second fan housing is connected with the first fan housing and then internally forms a containing cavity at least containing the rotor structure,

the stator structure is arranged in the accommodating cavity, and/or the stator structure is arranged outside the accommodating cavity.

22. The air supply device according to claim 21, wherein the support structure for the motor is provided on a side of the first fan housing facing the second fan housing.

23. The air supply arrangement of claim 21,

and a ventilation grid is arranged on the first fan housing and/or the second fan housing.

24. The air supply arrangement according to any of claims 15 to 21, wherein the support structure of the motor is in the form of a hollow shaft, and the rotor is mounted on the support structure.

25. The air supply arrangement according to any of claims 15 to 21, wherein the support structure of the motor is in the form of a hollow shaft, the air supply arrangement further comprising:

the shaft sleeve is sleeved on the supporting structure, and the fan blades are sleeved on the shaft sleeve.

26. An air supply arrangement as claimed in any of claims 15 to 21, further comprising a base, the stator structure being provided on the base, and the motor being detachably connected to the base.

27. A household appliance, characterized in that it comprises:

an air supply device as claimed in any one of claims 1 to 14, comprising an electric motor;

the rotor structure of the motor is arranged on the rotating assembly, and the stator structure of the motor is arranged corresponding to the rotor structure, so that under the action of the stator structure, the rotating assembly is driven to rotate along with the rotor structure.

28. The household appliance of claim 27, wherein the household appliance is a desk fan, ceiling fan, wall fan, tower fan, cooling fan, warm air blower, purifier, air conditioner, washing machine, range hood, bread maker, or wall breaking machine.