CN112421806A - Motor, air supply device and household appliance - Google Patents

Abstract

The invention provides a motor, an air supply device and a household appliance, wherein the motor comprises: a rotor structure; the stator structure is arranged at least one end of the rotor structure in the axial direction, and the stator structure is detachably connected with the rotor structure. 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

Motor, air supply device and household appliance

Technical Field

The invention relates to the technical field of motors, in particular to a motor, 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; the stator structure is arranged at least one end of the rotor structure in the axial direction, and the stator structure is detachably connected with the rotor structure.

According to the technical scheme of the first aspect of the invention, the motor comprises a rotor structure and a stator structure, wherein the stator structure is arranged at least one end of the rotor structure along the axial direction, so that the arrangement position of the stator structure 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 circumferential direction inside or outside the rotor structure, and only needs to be arranged at one end or two ends of the rotor structure along the axial 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 can be understood that the rotor structure of this application can be directly be connected with the load to cancel the drive shaft of traditional motor, formed coreless motor, changed the mode of setting up of motor with the load, made the motor need not to set up along the axial with the load, thereby can reduce the size of motor on the axial direction, effectively reduce the occupation to the space, be favorable to realizing lightweight and miniaturized design.

It should be emphasized that although the stator structure is disposed in the axial direction of the rotor structure, the space occupied by the stator structure of the present invention is greatly reduced compared to the conventional motor structure.

It can be understood that, according to the setting position of the rotor structure, the stator structure can correspond to one end or two ends of the setting and rotor structure, so that the motor integrally forms an eccentric structure, and the setting position of the stator structure is more flexible, so that the motor can be suitable for loads of various different structures. Meanwhile, 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 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 part arranged along the circumference of the rotor structure, and the stator structure is arranged corresponding to the magnetic part so as to drive the magnetic part to rotate through the stator structure.

In this technical scheme, the rotor structure includes at least one magnetic part that sets up along rotor structure's circumference to through the stator structure who corresponds the setting with the magnetic part, produce the effort to the magnetic part, and the effort direction that a plurality of magnetic parts received is the same, thereby drive the magnetic part and rotate along the same direction, drive the load and follow the motion of rotor structure.

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 the 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 the two stator teeth are electrified simultaneously and have different polarities, and the magnetic poles of the stator windings on the two stator teeth are alternated.

In the technical scheme, the stator iron core is provided with at least two stator teeth, and the stator windings on the 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 the 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.

It should be noted that the stator teeth are arranged toward the rotor structure, so that the magnetic field generated by the stator winding after being electrified can drive the rotor, thereby driving the rotor structure to drive the load to rotate.

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-mentioned solution, the end face of the stator tooth shoe of each stator tooth faces the rotor structure.

In the technical scheme, the end face of the stator tooth shoe of each stator tooth is limited to be arranged towards the rotor structure, so that each stator tooth is arranged corresponding to the rotor structure, and each stator core can generate acting force in the tangential direction on the rotor structure to drive the rotor structure to rotate in the same direction.

Furthermore, the end surfaces of the stator tooth shoes are planes, and the end surfaces of the stator tooth shoes of the plurality of stator teeth are parallel to each other.

In the technical scheme, the end surfaces of the stator tooth shoes are arranged to be planes, and the end surfaces of the plurality of stator tooth shoes are parallel to each other, so that when the stator structure is arranged corresponding to the rotor structure, the end surfaces of the stator tooth shoes are matched with the end surfaces of the load; especially, when the end surfaces of the stator tooth shoes are on the same plane, the gap between the stator structure and the rotor structure can be further reduced, the magnetic action of the stator structure on the rotor structure is enhanced, and the driving force is increased.

In the above technical scheme, the number of the stator cores is at least two, at least one stator core is arranged corresponding to the magnetic part at one end of the rotor structure, and at least one stator core is arranged corresponding to the magnetic part at the other end of the rotor structure.

In this technical scheme, the rotor structure includes two sets of magnetic part that set up along the circumference direction, every magnetic part of group all sets up and locates the both ends of rotor structure respectively along circumference, stator core's quantity is at least two, correspond the setting through the magnetic part with at least one stator core and the one end of rotor structure, at least one stator core corresponds the setting with the magnetic part of the other end of rotor structure, so that the magnetic part at rotor structure both ends receives the magnetic force effect of the stator structure who corresponds respectively, produce the drive power of equidirectional, rotate simultaneously along same direction with the magnetic part at drive rotor structure both ends, and then drive the load rotation jointly, can effectively increase drive power, improve the rotational speed.

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 any magnetic member are all equal.

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 any magnetic part are equal, so that the same axial distance is kept between any magnetic part of the rotor structure and the end surface of the stator tooth shoe of each stator tooth, 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 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 cores are uniformly arranged along the circumferential direction of the rotor structure, the stress of the rotor structure in the circumferential direction is balanced, the noise generated by the motor in the working process is reduced, and the service life of the motor is prolonged. 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 the above-described technical solution, the plurality of magnetic members are continuously provided in the circumferential direction on the end surface of the load.

In the technical scheme, the plurality of magnetic parts are continuously arranged on the end face of the load 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 plurality of magnetic pieces are uniformly arranged along the circumferential direction on the end face of the load, and a circumferential gap exists between any two adjacent magnetic pieces.

In this technical scheme, through evenly arranging a plurality of magnetic part along circumference on the side of rotor structure, and arbitrary two adjacent magnetic part direct existence circumference clearances, make rotor structure form discontinuous structure, and a plurality of magnetic parts etc. are arranged 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, the terminal surface of the flabellum is located to the rotor structure that includes a plurality of magnetic part of motor, and stator structure corresponds with the rotor and locates at least one end of flabellum to under the stator structure's of motor effect, drive the flabellum and rotate along with rotor 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 located to the rotor structure of motor, and the load of motor promptly is the flabellum, and stator structure corresponds with rotor structure and locates at least one end of flabellum, produces magnetic force effect through stator structure to rotor structure, drives rotor structure and rotates to drive the flabellum and rotate along with rotor structure, realize air supply arrangement's operation.

Compared with a driving fan, the air supply device provided by the invention has the advantages that the motor mounting position behind the fan blades can be eliminated, the flattening and the light weight of the fan can be realized, the weight and the eccentric influence of the head part of the fan can be reduced, the unnecessary arrangement of a counterweight can be reduced, and the integral stability can be improved.

It should be noted that the rotor structure may be separately disposed on one end surface of the fan blade, or may be disposed on two end surfaces of the fan blade at the same time. It will be appreciated that the provision of a plurality of rotor structures facilitates an increase in the drive force of the motor to the fan blades.

In the above technical scheme, the flabellum is the annular, and on the terminal surface of the inboard of flabellum was located to the rotor structure, stator structure located the flabellum outer one end that is close to and/or keeps away from the rotor structure.

In the technical scheme, the fan blades are annular, namely, the end faces are provided with concave cavities extending along the axial direction, the rotor structure is arranged on the end faces on the inner sides of the fan blades, namely, the rotor structure is arranged on the end faces in the concave cavities, and at the moment, the stator structure can be arranged at one end close to the rotor structure, namely, the stator structure is arranged in the concave cavities of the fan blades and corresponds to the rotor structure; the stator structure can also be arranged at one end far away from the rotor structure, namely the other end outside the fan blade; of course, the stator structure may be disposed on the fan blade at both ends close to and far from the rotor structure to enhance the driving force of the stator structure to the rotor structure. It can be understood that when the stator structure is arranged at one end in the concave cavity, the hidden arrangement can be realized, and the reduction of the axial size is facilitated.

In the above technical scheme, the flabellum is the annular, and on the terminal surface in the outside of flabellum was located to the rotor structure, stator structure located the flabellum outer one end that is close to and/or keeps away from the rotor structure.

In the technical scheme, the fan blades are annular, namely, the end faces are provided with the cavities extending along the axial direction, the rotor structure is arranged on the end face of the outer side of the fan blades, namely, the rotor structure is arranged on the end face of the other side opposite to the cavities, and at the moment, the stator structure can be arranged at one end close to the rotor structure, namely, the stator structure is arranged at the other end opposite to the cavities on the fan blades; the stator structure can also be arranged at one end far away from the rotor structure, namely one end in a concave cavity on the fan blade; of course, the stator structure may be disposed on the fan blade at both ends close to and far from the rotor structure to enhance the driving force of the stator structure to the rotor structure. It can be understood that when the stator structure is arranged at one end in the concave cavity, the hidden arrangement can be realized, and the reduction of the axial size is facilitated.

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 end surface of the inner side of the first fan blade support; and/or the rotor structure is arranged on the end surface of the inner side 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, namely the fan blade is annular at the moment, the rotor structure can be arranged on the end surface of the inner side wall of the first fan blade support, the distance between the rotor structure and the stator structure can be reduced, the distance between the rotor structure and the stator structure is relatively short, the rotor structure rotates along the circumferential direction, the linear displacement of the rotor structure is small, and the rotation speed is higher under the action of magnetic force with the same size; the magnetic force effect is enhanced, and the driving force is increased; the rotor structure can also be arranged on the end face of the inner side wall of the second fan blade support, and the distance from the rotor structure to the circumferential direction of rotation is relatively far, so that the force arm of the stressed fan blades can be prolonged, and the rotation efficiency can be improved. Of course, the rotor structures can be arranged on the end face of the inner side wall of the first fan blade support and the end face of the inner side wall of the second fan blade support at the same time, so that the driving force of the stator structure to the rotor structure is further increased through the plurality of rotor structures, and the rotating speed is increased at the same time.

It can be understood that the radial direction and the axial direction of the fan blades are provided with a plurality of groups of rotor structures and stator structures, so that the driving force to the fan blades can be effectively enhanced, and the rotation efficiency can be improved.

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 flabellum is direct to be connected with bearing structure rotation, then need carry out whole change with the flabellum when wearing and tearing reach a certain degree, and the flabellum passes through the axle sleeve and is connected with bearing structure rotation, only need to change the axle sleeve can.

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 view of a rotor structure according to an embodiment of the invention;

fig. 4 shows a schematic structural view of an electric machine 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 shows a schematic structural view of an electric machine according to an embodiment of the invention;

fig. 7 shows a schematic structural view of an electric machine according to an embodiment of the invention;

fig. 8 shows a schematic structural view of a motor according to an embodiment of the present invention;

fig. 9 shows a schematic structural view of a motor according to an embodiment of the present invention;

fig. 10 shows a schematic structural view of a motor according to an embodiment of the present invention;

FIG. 11 is a schematic structural view of an air supply apparatus according to an embodiment of the present invention;

FIG. 12 is a schematic view of a fan blade according to an embodiment of the invention;

FIG. 13 is a schematic cross-sectional view of an air supply apparatus according to an embodiment of the present invention;

FIG. 14 is a schematic structural view of an air supply apparatus according to an embodiment of the present invention;

FIG. 15 is a schematic cross-sectional view of an air supply apparatus according to an embodiment of the present invention;

FIG. 16 is a schematic view of a fan blade according to an embodiment of the invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 16 is:

the wind turbine comprises a motor 1, a rotor 12, a magnetic part 122, a stator 14, a stator core 142, stator teeth 144, stator tooth 1442 shoes 16, a support structure 2, an air supply device 2, an air passing channel 21, fan blades 22, a first fan housing 24, a second fan housing 26, a ventilation grille 28, a shaft sleeve 30, a base 32, a first fan blade support 34, a first fan blade 342, a second fan blade support 36 and a second fan blade 362.

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 22 is only one representation of a load, and that the load may also vary when the motor 1 is used in 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 machine or a juice extractor, the load may be a blade.

In addition, the load can be any one of a platform fan, a ceiling fan, a wall fan, a tower fan, a cooling fan, a warm air blower and a range hood.

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 16.

Example one

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 along axial one end 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 portion of the rotor structure 12 opposite to the stator structure 14 changes along with the rotation of the rotor structure 12, but the portion 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, as shown in fig. 2, the stator structure 14 includes three stator teeth 144, and each side of the stator teeth 144 facing the rotor structure 12 is a plane.

Alternatively, as shown in fig. 5, 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 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 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. 1, 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.

In another embodiment, the stator structure 14 includes a stator core 142 provided with two stator teeth 144, and stator windings are provided on the stator teeth 144, the adjacent two stator windings having different polarities. Further, the electrical machine 1 also comprises a magnetic sensor to detect the direction of rotation of the rotor structure 12 relative to the stator structure 14. It should be noted that the number of the stator teeth 144 on the stator core 142 is not limited by the embodiment, and only one stator tooth 144 may be provided on each stator core 142, and the two stator teeth 144 are respectively provided on the two stator cores 142.

When the stator structure 14 includes two stator teeth 144, the rotor structure can be driven by respectively or simultaneously energizing the windings on the two stator teeth 144, specifically, when the windings are respectively energized, the N pole is first energized by the first stator winding to attract the magnetic member of the S pole on the rotor structure to move towards the first stator winding, at this time, the polarity of the magnetic member corresponding to the second stator winding is the N pole, then, the N pole is energized by the second stator winding to drive the rotor to rotate by the repulsive force, and the two stator windings are sequentially energized 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.

EXAMPLE III

Another embodiment of the present application provides an air supply device 2, as shown in fig. 1, 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 the rotor structure 12 includes a plurality of magnetic members 122 forming a closed pattern, and the magnetic members are disposed on an air intake side end surface of the fan blade 22, the stator structure 14 is disposed at the same end 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 with 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.

Fig. 4 shows another arrangement position of the stator structure 14, that is, a plurality of magnetic members 122 are provided on the end surface of the air inlet side of the fan blades 22, and the stator structure 14 is provided at the other end different from the 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 the rotor structure 12 includes a plurality of magnetic members 122 forming a closed pattern, and the magnetic members are disposed on an air-out side end surface of the fan blade 22, the stator structure 14 is disposed at the same end 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 with 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.

Fig. 6 shows another arrangement position of the stator structure 14, that is, a plurality of magnetic members 122 are provided on the end surface of the air inlet side of the fan blades 22, and the stator structure 14 is provided at the other end different from the magnetic members 122.

EXAMPLE five

In another embodiment of the present application, an air supply device 2 is provided, as shown in fig. 7, the air supply device 2 includes an electric motor 1 having an eccentric structure formed by combining a stator structure 14 and a rotor structure 12, and fan blades 22 directly contacting the rotor structure 12, the fan blades 22 being provided with axially extending cavities, wherein, the rotor structure 12 includes a plurality of magnetic members 122 forming a closed pattern, and is disposed on the end surface in the cavity of the fan blade 22, the stator structure 14 is disposed at the same end of the annular structure formed by the plurality of magnetic members 122, that is, the stator structure 14 and the rotor structure 12 are disposed in the cavity, when the direction of the current of the stator winding wound around the stator teeth 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 the load to rotate.

Fig. 8 shows another arrangement position of the stator structure 14, that is, the plurality of magnetic members 122 are arranged on the end surface in the cavity of the fan blade 22, and the stator structure 14 is arranged at the other end different from the magnetic members 122, that is, the stator structure 14 is arranged at the other end outside the fan blade 22.

EXAMPLE six

In another embodiment of the present application, an air supply device 2 is provided, as shown in fig. 9, the air supply device 2 includes an electric motor 1 having an eccentric structure formed by combining a stator structure 14 and a rotor structure 12, and fan blades 22 directly contacting the rotor structure 12, the fan blades 22 being provided with axially extending cavities, wherein, the rotor structure 12 includes a plurality of magnetic members 122 forming a closed pattern, and is disposed on an end surface of one end opposite to the cavity of the fan blade 22, the stator structure 14 is disposed on the other end of the annular structure formed by the plurality of magnetic members 122, that is, the stator structure 14 and the rotor structure 12 are disposed in the cavity, when the direction of the current of the stator winding wound around the stator teeth 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 the load to rotate.

Fig. 10 shows another arrangement position of the stator structure 14, that is, a plurality of magnetic members 122 are arranged on the end surface in the cavity of the fan blade 22, and the stator structure 14 is arranged at the same end as the magnetic members 122, that is, the stator structure 14 is also arranged at the other end opposite to the cavity outside the fan blade 22.

EXAMPLE seven

Another embodiment of the present application provides an air supply device 2, as shown in fig. 11 and 12, 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 disposed correspondingly, so as to generate magnetic fields with different polarities when controlling a current direction of a stator winding wound around 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.

Further, as shown in fig. 13, 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. 13, the first wind shield 24 and the second wind shield 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 shield 24 and the side of the second wind shield 26, respectively.

Further, as shown in fig. 13, 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. 14 shows another form of the support structure 16, namely that 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 eleven

As shown in fig. 15, an air supply device 2 includes an eccentric motor 1 formed by combining a stator structure 14 and a rotor structure 12, 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 that when the current direction of a stator winding wound on a stator tooth 144 in the stator structure 14 is controlled, magnetic fields with different polarities can be generated, 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 along with the base 32.

It should be noted that the stator structure 14 is disposed on the end face of the fan blade, the base is L-shaped to half-surround the fan blade, when the fan blade needs to be disassembled or replaced, the fan blade can be directly disassembled from the base, and then the base is mounted after replacement.

It will be appreciated by those skilled in the art that the base can only fix the stator structure and support the fan blades, and is not limited to the L-shape disclosed in the above embodiments.

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.

In any of the above embodiments, as shown in fig. 14, the fan blade 22 includes the first fan blade support 34 and the first fan blade 342 disposed on the outer sidewall of the first fan blade support 34. When the air passage is formed in the fan blade 22, the air passage is formed on the radial inner side of the first fan blade support 34, and when the air passage is formed on the support structure, the support structure is arranged in the first fan blade support 34.

As shown in fig. 14, in order to improve the use safety of the product, a second blade support 36 coaxial with the first blade support 34 is sleeved outside the first blade 342.

As shown in fig. 4, in order to increase the air volume, a second fan 362 is further disposed on the second fan bracket 36.

The technical scheme of the invention is explained in detail by combining the 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 on the end surface of the rotor structure, so that the size of the whole motor can be reduced, and the rotor structure can be driven in the end surface direction to drive the load directly connected with the rotor to rotate in the circumferential direction.

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

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (32)

1. An electric machine, comprising:

a rotor structure;

the stator structure is arranged at least one end of the rotor structure in the axial direction, and the stator structure is detachably connected with the rotor structure.

2. The motor of claim 1 including a drive zone, said drive zone including at least one of said stator cores and a portion of said rotor structure opposite said stator structure.

3. The machine of claim 1 wherein the maximum distance of the rotor structure from the stator structure is less than 4 mm.

4. The electric machine of claim 1, wherein the rotor structure comprises at least one magnetic member disposed along a circumferential direction of the rotor structure, and the stator structure is disposed in correspondence with the magnetic member to drive the magnetic member to rotate through the stator structure.

5. The electric machine of claim 4, wherein the stator structure comprises at least one stator core and at least two stator teeth disposed on the stator core and disposed toward the rotor structure.

6. The electric machine of claim 5,

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 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.

7. The electric machine of claim 4, wherein an end face of the stator tooth shoe of each stator tooth faces the rotor structure.

8. The electric machine of claim 7 wherein the end faces of the stator tooth shoes are planar and the end faces of the stator tooth shoes of a plurality of the stator teeth are parallel to each other.

9. The electric machine of claim 8, wherein the number of stator cores is at least two, at least one of the stator cores is disposed corresponding to the magnetic member of one end of the rotor structure, and at least one of the stator cores is disposed corresponding to the magnetic member of the other end of the rotor structure.

10. The electric machine of claim 8 wherein said stator structure comprises a stator core having three said stator teeth, the end faces of the stator tooth shoes of the three said stator teeth being equidistant from any of said magnetic members.

11. The electric machine of claim 6,

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.

12. The motor of claim 6, further comprising a magnetic judging device disposed at one end of the rotor and corresponding to the magnetic member for obtaining a rotation direction of the rotor relative to the stator structure.

13. The electric machine according to claim 11 or 12, characterized in that the number of stator cores is plural, a plurality of stator cores being arranged around the axis of rotation of the rotor structure.

14. The electric machine of claim 4, further comprising:

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

15. The electric machine according to any one of claims 4 to 12 or 14, wherein a plurality of the magnetic members are arranged in series in a circumferential direction.

16. The electric machine of any one of claims 4 to 12 or 14, wherein a plurality of said magnetic members are arranged uniformly in a circumferential direction, and a circumferential gap exists between any two adjacent said magnetic members.

17. The electric machine of claim 4 wherein said magnetic member is a unitary structure.

18. An air supply device, comprising:

the electric machine of any one of claims 1 to 17;

the fan blade, the rotor structure that includes a plurality of magnetic part of motor is located the terminal surface of fan blade, stator structure with the rotor corresponds locates at least one end of fan blade, with under the effect of the stator structure of motor, the drive the fan blade is along with rotor structure rotates.

19. The device of claim 18, wherein the fan blades are annular, the rotor structure is disposed on an inner end surface of the fan blades, and the stator structure is disposed at an end of the fan blades that is close to and/or far from the rotor structure.

20. The device of claim 18, wherein the fan blades are annular, the rotor structure is disposed on an end surface of an outer side of the fan blades, and the stator structure is disposed at an end of the outer side of the fan blades close to and/or far away from the rotor structure.

21. The air supply arrangement of claim 18, 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.

22. The air supply arrangement of claim 21, 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.

23. The air supply arrangement of claim 22, wherein the fan blades further comprise:

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.

24. The air supply arrangement of claim 23, wherein the rotor structure is disposed on an end surface of an inner side of the first blade support; and/or the rotor structure is arranged on the end surface of the outer side of the second fan blade support.

25. The air supply arrangement of claim 18, 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,

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

26. The air supply device according to claim 25, wherein the support structure for the motor is provided on a side of the first fan housing facing the second fan housing.

27. The air supply arrangement of claim 25,

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

28. The device as claimed in any one of claims 18 to 27, wherein the supporting structure of the motor is a hollow shaft, and the fan blades are sleeved on the supporting structure.

29. The air supply arrangement according to any of claims 18 to 27, 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.

30. The air supply arrangement of any of claims 18 to 27, further comprising a base, wherein the motor is removably coupled to the base.

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

the electric machine of any one of claims 1 to 17;

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.

32. The household appliance of claim 31, wherein the household appliance is a floor 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.

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