Shaft type magnetic flux motor structure for stirring household appliances

Abstract

The invention discloses a shaft-type magnetic flux motor structure for stirring household appliances, which comprises a stator and a rotor, and is characterized in that the stator is fixed on a first carrier and is provided with a plurality of coil windings which are circumferentially and equally distributed on a plane at intervals; the rotor comprises a rotor main body mounted on the second carrier through a main bearing, a rotating shaft fixed at the upper end of the rotor main body, and a plurality of magnets which are fixed on the lower end surface of the rotor main body, are uniformly distributed according to the circumference and are in one-to-one correspondence with the coil windings, and N poles and S poles of the magnets are distributed in the axial direction; the polarities of two adjacent magnets on the same plane are opposite; the second carrier is detachably installed on the first carrier, the magnet is arranged above the coil winding, and a gap is formed between the magnet and the coil winding. The rotor mounting structure is more stable, and the rotation is smooth and stable, so that the phenomenon that the rotor shakes relative to the stator to form vibration so as to resonate noise is avoided or reduced; the distance between the main bearing and the center of the rotor is shortened, the assembly structure is stable, and vibration harmonic noise can be reduced.

Description

Technical field:

[0001] The present invention relates to the technical field of household electrical appliances, and in particular to an axial flux motor structure used for stirring household appliances. Background technology:

[0002] Rotating household appliances, such as blenders, soy milk makers, meat choppers, and wall breakers, are all appliances that are accepted and used by the majority of consumers.

[0003] Rotating household appliances basically use motors to drive the blades. However, the motors often generate various noises during operation, which not only affect the user's comfort, but may also have adverse effects on health.

[0004] The rotors and stators of the motors currently used in rotating household appliances are assembled radially inside and outside, and the two cannot be separated and installed on different carriers, so that they cannot meet certain special installation requirements; among them, the rotor is installed on the motor only at the upper end of its rotating shaft through a bearing, so that the rotor is non-contact positioned relative to the stator, and a rotatable gap is formed between the rotor and the stator. The installation is not stable enough, and it may cause the rotor to shake relative to the stator due to various problems, thereby generating vibration and resonant noise; in addition, because the rotor is installed on the motor only at the upper end of its rotating shaft through a bearing, it lengthens the distance between the bearing and the middle of the rotor and the vibration harmonic noise caused by the fixed bearing position.

[0005] In view of this, the inventor proposes the following technical solution. Summary of the invention:

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an axial flux motor structure for stirring household appliances.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: the axial flux motor structure for stirring household appliances includes a stator and a rotor that are adapted to each other, the stator is fixed on a first carrier, and the stator has a plurality of coil windings that are evenly spaced on a plane; the rotor includes a rotor body rotatably mounted on a second carrier through a main bearing, a rotating shaft fixed to the upper end of the rotor body, and a plurality of magnets fixed to the lower end surface of the rotor body and evenly distributed on the circumference and corresponding to the coil windings one by one, the N pole and the S pole of the magnet are distributed in the axial direction, and the polarities of two adjacent magnets on the same plane are opposite; the second carrier is detachably mounted on the first carrier, the magnet is placed above the coil winding, and a gap is formed.

[0008] Furthermore, in the above technical solution, the stator includes a base installed on a first carrier, an annular iron core installed on the base, and a plurality of coil windings wound on the annular iron core, wherein the annular iron core is formed with a plurality of core columns evenly spaced in a circle on a plane, and the coil windings are wound on the core columns.

[0009] Furthermore, in the above technical solution, a plurality of lugs are provided on the outside of the base, each lug is provided with a through hole, and the first screw passes through the through hole and is spirally fixed to the first carrier; an annular mounting groove is provided on the base, the annular iron core is embedded and fixed in the annular mounting groove, and the lower part of the coil winding is placed in the annular mounting groove, and the upper part of the core column and the coil winding both protrude outside the upper end of the base.

[0010] Furthermore, in the above technical solution, the lower end surface of the rotor body is provided with a plurality of grooves evenly spaced around the circumference, the magnets are embedded and fixed in the grooves, and the lower surface of the magnets is exposed outside the lower end surface of the rotor body.

[0011] Furthermore, in the above technical solution, the cross-section of the magnet and the coil winding is fan-shaped; the first carrier and the second carrier are respectively provided with a first installation cavity and a second installation cavity; the stator and the rotor are respectively installed in the first installation cavity and the second installation cavity, so that the stator and the rotor are isolated from each other.

[0012] Furthermore, in the above technical solution, a stepped groove is provided at the lower end of the rotor body, and the outer circle of the main bearing is embedded and fixed in the stepped groove and is clamped and restricted by a retaining spring; a convex shaft is provided in the second carrier, and the inner circle sleeve of the main bearing is fixed on the convex shaft, so that the rotor body can form a stable rotation relative to the second carrier.

[0013] Furthermore, in the above technical solution, a non-circular shaft hole is provided at the upper end of the rotor body; a connecting portion with a smaller size and matching the non-circular shaft hole is provided at the lower end of the rotating shaft, and a screw hole is also provided at the bottom of the connecting portion, the connecting portion is embedded in the non-circular shaft hole and placed in the rotor body, the second screw is spirally fixed to the screw hole of the connecting portion, and the head of the second screw is against the outer side of the lower end opening of the non-circular shaft hole to limit the lower end of the rotating shaft to the upper end of the rotor body.

[0014] Furthermore, in the above technical solution, the rotating shaft is installed in the casing through a sealing assembly, and the sealing assembly includes a connecting seat, a rubber sleeve sleeved on the outside of the connecting seat, a connecting cover fixed on the outside of the rubber sleeve, a first bearing and a second bearing fixed in the connecting seat and distributed at intervals, and a rubber plug arranged at the opening of the upper end of the connecting seat. The connecting seat is embedded and fixed in the mounting position at the lower end of the casing through the rubber sleeve and the connecting cover to form a sealing assembly. The middle part of the rotating shaft is penetrated and fixed with the first bearing and the second bearing, and the lower end of the rotating shaft extends out of the sealing assembly to be connected with the upper end of the rotor body. The upper end of the rotating shaft passes through the rubber plug and extends into the casing, and a blade is installed. The rubber plug is also wrapped around the outer surface of the rotating shaft to form a rotatable sealing assembly.

[0015] Furthermore, in the above technical solution, the outside of the rubber stopper is provided with a plurality of sealing ribs which are spaced apart vertically, and the sealing ribs are in squeeze contact with the inner wall of the connecting seat; the inside of the rubber stopper is provided with a first sealing flange which extends obliquely downward and a second sealing flange which is integrally formed at the upper end of the first sealing flange and extends obliquely upward; a bending portion and a third sealing flange which is integrally formed at the end of the bending portion and extends obliquely upward are also formed at the opening of the upper end of the rubber stopper; the first sealing flange, the second sealing flange and the third sealing flange all abut against the outer surface of the rotating shaft and form a sealing contact.

[0016] Furthermore, in the above technical solution, a control circuit board is further provided in the first carrier, the stator also includes an SU terminal, an SV terminal, and a SW terminal connected to one or more coil windings, the SU terminal, the SV terminal, and the SW terminal are connected to the control circuit board, the control circuit board includes an AC input terminal, a transformer unit connected to the AC input terminal, an AC-DC step-down circuit connected to the output of the transformer unit, a DC power supply unit connected to the AC-DC step-down circuit, an MCU controller connected to the DC power supply unit, a three-phase full-bridge drive module connected to the output of the transformer unit and the MCU controller, and an AC After 220V AC is passed into the electrical input end, the transformer unit converts the 220V AC into low-voltage AC. One end of the low-voltage AC is output to the three-phase full-bridge drive module. The three-phase full-bridge drive module outputs corresponding SU, SV, and SW voltages to the SU terminal, SV terminal, and SW terminal. The other end is stabilized to 5V DC through the AC-DC step-down circuit and the DC power supply unit. The 5V DC is supplied to the MCU controller. The MCU controller communicates with the three-phase full-bridge drive module to control the three-phase full-bridge chip in the three-phase full-bridge drive module to output different SVPWM voltages for controlling the speed, torque, power, and current of the motor.

[0017] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art: the present invention fixes the stator on the first carrier, and the rotor body of the rotor is rotatably mounted on the second carrier through the main bearing, the rotating shaft is mounted on the rotor body, and the second carrier is detachably mounted on the first carrier, so that the rotor and the stator form an open assembly structure, so that different use requirements can be met. Since the rotor body of the rotor is rotatably mounted on the second carrier through the main bearing, rather than being mounted and positioned by the rotating shaft and the bearing, its installation structure is more stable, so that the rotor body and the rotating shaft at its upper end rotate more smoothly and more stably, thereby avoiding or reducing the phenomenon of vibration and resonance noise caused by the vibration of the rotor relative to the stator; in addition, since the rotor body of the rotor is rotatably mounted on the second carrier through the main bearing, the distance between the main bearing and the center of the rotor is shortened, and the assembly structure is stable, which can reduce vibration harmonic noise. Description of the drawings:

[0018] Figure 1 is a three-dimensional diagram of the assembly structure of the present invention;

[0019] Figure 2 is a cross-sectional view of the assembly structure of the present invention;

[0020] Figure 3 is a stereogram of the present invention;

[0021] Figure 4 It is a stereogram of another viewing angle of the present invention;

[0022] Figure 5 is a three-dimensional diagram of the stator in the present invention;

[0023] Figure 6 is a three-dimensional exploded view of the stator in the present invention;

[0024] Figure 7 is a three-dimensional diagram of the rotor in the present invention;

[0025] Figure 8 is a cross-sectional view of the rubber stopper of the present invention;

[0026] Fig. 9 is a three-dimensional exploded view of the rotor in the present invention;

[0027] Fig.10 It is an assembly diagram of the rotating shaft, the sealing assembly and the blade in the present invention;

[0028] Fig.11 It is an exploded view of the rotating shaft, the sealing assembly and the blade in the present invention;

[0029] Fig.12 It is the circuit diagram of the first part of the control circuit board in the present invention;

[0030] Fig.13 This is the second part of the circuit diagram of the control circuit board in the present invention. Specific implementation method:

[0031] The present invention is further described below in conjunction with specific embodiments and drawings.

[0032] See Figure 1-13 As shown, a shaft-type flux motor structure is used for stirring household appliances, wherein the rotating household appliances can be a blender, a soymilk maker, a meat grinder, a wall breaking machine, a food processor, etc.

[0033] The axial flux motor structure for stirring household appliances of the present invention comprises an axial flux motor, and the axial flux motor comprises a stator 1 and a rotor 2 adapted to each other.

[0034] The stator 1 is fixed on the first carrier 3, and the stator 1 has a plurality of coil windings 11 distributed at equal intervals on a plane; the rotor 2 includes a rotor body 22 rotatably mounted on the second carrier 4 through a main bearing 21, a rotating shaft 23 fixed to the upper end of the rotor body 22, and a plurality of magnets 24 fixed to the lower end surface of the rotor body 22 and distributed at equal intervals on the circumference and corresponding to the coil windings 11 one by one, the N pole and the S pole of the magnet 24 are distributed in the axial direction, and the polarities of two adjacent magnets 24 in the same plane are opposite; the second carrier 4 is detachably mounted on the first carrier 3, and the magnet 24 is placed above the coil winding 11, and a gap is formed. The working principle of the present invention is: the magnetic flux direction formed by the magnet 24 at the lower end of the rotor 2 is axial, that is, its magnetic flux passes through the central axis of the rotor; after the plurality of coil windings 11 are energized, the magnetic field generated passes through the rotor along the axial direction, and according to the Lorentz force law, this magnetic field will generate a torque in the rotor, thereby driving the rotor to rotate. The present invention fixes the stator 1 on the first carrier 3, and the rotor body 22 of the rotor 2 is rotatably mounted on the second carrier 4 through the main bearing 21, the rotating shaft 23 is mounted on the rotor body 22, and the second carrier 4 is detachably mounted on the first carrier 3, so that the rotor 2 and the stator 1 form an open assembly structure, so that different use requirements can be met; since the rotor body 22 of the rotor 2 is rotatably mounted on the second carrier 4 through the main bearing 21, rather than being mounted and positioned by the rotating shaft and the bearing, its installation structure is more stable, so that the rotor body 22 and the rotating shaft 23 at the upper end rotate more smoothly and more stably, thereby avoiding or reducing the phenomenon of vibration and resonance noise caused by the vibration relative to the stator; in addition, since the rotor body 22 of the rotor 2 is rotatably mounted on the second carrier 4 through the main bearing 21, the distance between the main bearing and the center of the rotor 2 is shortened, and the assembly structure is stable, which can reduce vibration harmonic noise.

[0035] Specifically, the specific structure of the stator 1 is as follows: the stator 1 includes a base 12 installed on the first carrier 3, an annular core 13 installed on the base 12, and a plurality of coil windings 11 wound on the annular core 13. The structure is simple, wherein the annular core 13 is formed with a plurality of core columns 131 evenly spaced on a plane according to a circumference, and the coil windings 11 are wound on the core columns 131 to form a plurality of coil windings 11 evenly spaced on a plane according to a circumference, and the coil windings 11 correspond one-to-one to the magnets 24.

[0036] The base 12 is provided with a plurality of lugs 121 on the outside, and the lugs 121 are provided with through holes 122. The first screw passes through the through holes 122 and is screwed to the first carrier 3, thereby ensuring that the stator 1 is fixedly mounted on the first carrier 3; wherein, the base 12 is provided with an annular mounting groove 123, the annular core 13 is embedded and fixed in the annular mounting groove 123, and the lower part of the coil winding 11 is placed in the annular mounting groove 123, the core column 131 and the upper part of the coil winding 11 are both protruding outside the upper end of the base 12, thereby ensuring that the assembly structure is more stable. In addition, the bottom of the annular core 13 is also glued and fixed to the annular mounting groove 123 by glue, further enhancing the stability of the assembly structure.

[0037] The assembly structure of the rotor body 22 and the magnet 24 is as follows: the lower end surface of the rotor body 22 is provided with a plurality of grooves 221 equally spaced in a circumference, the magnet 24 is embedded and fixed in the groove 221, and the lower surface of the magnet 24 is exposed outside the lower end surface of the rotor body 22. In addition, the following design can be added: the magnet 24 is also glued and fixed to the groove 221 by glue to further enhance the stability of the assembly structure, wherein the glue is required not to affect the magnetism and magnetic field, and glue with good gluing performance can be selected.

[0038] The cross-section of the magnet 24 and the coil winding 11 is fan-shaped, which can design as many magnets 24 and coil windings 11 as possible on a circular surface, thereby ensuring that the magnetic flux and magnetic field are stronger, making the rotation more stable and smoother relative to the stator rotation.

[0039] A stepped groove 222 is provided at the lower end of the rotor body 22, and the outer circle of the main bearing 21 is embedded and fixed in the stepped groove 222, fixed by interference fit, and limited by a retaining spring, so that the main bearing 21 is stably installed in the rotor body 22; a convex shaft 41 is provided in the second carrier 4, and the inner circle sleeve of the main bearing 21 is fixed on the convex shaft 41, so that the rotor body 22 can form a stable rotation relative to the second carrier 4.

[0040] The assembly structure of the rotor body 22 and the rotating shaft 23 is as follows: a non-circular shaft hole 223 is provided at the upper end of the rotor body 22; a connecting portion 231 with a smaller size and matching the non-circular shaft hole 223 is provided at the lower end of the rotating shaft 23, and a screw hole 232 is also provided at the bottom of the connecting portion 231, the connecting portion 231 is embedded in the non-circular shaft hole 223 and placed in the rotor body 22, a second screw is spirally fixed to the screw hole 232 of the connecting portion 231, and the head of the second screw is against the outer side of the lower end opening of the non-circular shaft hole 223, so as to limit the lower end of the rotating shaft 23 to the upper end of the rotor body 22, and then fix the rotating shaft 23 to the upper end of the rotor body 22, so that the two are fixed together to form a whole, and then synchronous rotation can be achieved.

[0041] The rotating shaft 23 is installed in the casing 6 through a sealing assembly 5, which includes a connecting seat 51, a rubber sleeve 52 sleeved on the outside of the connecting seat 51, a connecting cover 56 fixed to the outside of the rubber sleeve 52, a first bearing 53 and a second bearing 54 fixed in the connecting seat 51 and distributed at intervals, and a rubber plug 55 arranged at the opening of the upper end of the connecting seat 51. The connecting seat 51 is embedded and fixed in the mounting position 61 at the lower end of the casing 6 through the rubber sleeve 52 and the connecting cover 56 to form a sealed assembly, which not only realizes a sealed assembly, but also prevents foreign matter from entering. The middle part of the rotating shaft 23 is penetrated and fixed with the first bearing 53 and the second bearing 54, so that the assembly of the rotating shaft 23 is more stable, and can achieve a smoother and more stable rotation, thereby making the assembly of the entire rotor more stable, and the rotation is smoother and more stable. The lower end of the rotating shaft 23 extends out of the sealing assembly 5 to be connected to the upper end of the rotor body 22. The upper end of the rotating shaft 23 extends into the casing 6 after passing through the rubber plug 55 and is installed with a blade 7. The rubber plug 55 is also wrapped around the outer surface of the rotating shaft 23 to form a rotatable sealing assembly, which can improve the assembly sealing performance of the rotating shaft 23.

[0042] The first bearing 53 and the second bearing 54 are separated by a washer 50 to ensure that the first bearing 53 and the second bearing 54 rotate independently of each other, so that the rotating shaft 23 rotates more smoothly.

[0043] Among them, the outside of the rubber plug 55 is provided with a plurality of sealing ribs 551 distributed at intervals up and down, and the sealing ribs 551 are squeezed and contacted with the inner wall of the connecting seat 51, so as to ensure the stability and sealing of the assembly structure; the inside of the rubber plug 55 is provided with a first sealing flange 552 extending downwardly obliquely and a second sealing flange 553 integrally formed at the upper end of the first sealing flange 552 and extending upwardly obliquely, and the upper end opening of the rubber plug 55 is also formed with a bending portion 554 and a third sealing flange 555 integrally formed at the end of the bending portion 554 and extending upwardly obliquely, and the third sealing flange 555 is supported by the bending portion 554, and its elastic deformation ability is better, and the first sealing flange 552, the second sealing flange 553, and the third sealing flange 555 all abut against the outer surface of the rotating shaft 23 and form multiple sealing contacts, and can realize rotational sealing at the same time.

[0044] The first carrier 3 and the second carrier 4 are respectively provided with a first installation cavity 30 and a second installation cavity 40; the stator 1 and the rotor 2 are respectively installed in the first installation cavity 30 and the second installation cavity 40, so that the stator 1 and the rotor 2 are isolated from each other, which is particularly suitable for use in open rotating household appliances.

[0045] A control circuit board 8 is also provided in the first carrier 3. The stator 1 also includes an SU terminal, an SV terminal, and a SW terminal connected to one or more coil windings 11. The SU terminal, the SV terminal, and the SW terminal are connected to the control circuit board 8. The control circuit board 8 includes an AC input terminal 81, a transformer unit 82 connected to the AC input terminal 81, an AC-DC step-down circuit 83 connected to the output of the transformer unit 82, a DC power supply unit 84 connected to the AC-DC step-down circuit 83, an MCU controller 85 connected to the DC power supply unit 84, and a three-phase full-bridge drive module 86 connected to the output of the transformer unit 82 and the MCU controller 85. The AC input After 220V AC is passed into terminal 81, the transformer unit 82 converts the 220V AC into low-voltage AC. One end of the low-voltage AC is output to the three-phase full-bridge drive module 86. The three-phase full-bridge drive module 86 outputs corresponding voltages of SU, SV, and SW to the SU terminal, SV terminal, and SW terminal. The other end is stabilized to 5V DC through the AC-DC step-down circuit 83 and the DC power supply unit 84. The 5V DC is supplied to the MCU controller 85. The MCU controller 85 communicates with the three-phase full-bridge drive module 86 to control the three-phase full-bridge chip 861 in the three-phase full-bridge drive module 86 to output different SVPWM voltages for controlling the speed, torque, power, and current of the motor.

[0046] The model of the three-phase full-bridge chip 861 is SDM10C60TA2B1, which outputs three-phase AC power to the SU terminal, SV terminal, and SW terminal of the stator. Compared with DC power drive, the rotor rotates more smoothly without DC power jamming, which can effectively reduce work and jitter, thereby reducing noise output.

[0047] The axial flux motor structure of the present invention has the following advantages compared to the radial flux motor.

[0048] 1. Smaller size: Compared with traditional radial flux motors, this motor has more flexible combinations and wider applications. The rotor and stator can be separated, and the size is smaller. It can be used in more products with space limitations and is more flexible to use.

[0049] 2. High torque density and high torque: The effective magnetic surface area of ​​the axial flux motor is located on the lower surface of the rotor, rather than the outer diameter, so it can provide greater torque within a certain volume, thereby improving torque density and power density.

[0050] 3. High efficiency: Thanks to the shorter one-dimensional flux path, the efficiency of the axial flux motor is very high, usually over 96%, comparable to or better than the best two-dimensional radial flux motor on the market. Axial flux motors save about 15%-25% energy at all power levels compared to ordinary radial flux motors, and can maintain peak power output for a longer period of time, which can improve the efficiency of household appliances and reduce heat dissipation.

[0051] 4. Low noise: Due to the uniform distribution of the magnetic field and the ability to be combined and disassembled in multiple ways, the axial flux motor generates low noise and vibration during operation, making it particularly suitable for applications with strict requirements on noise and vibration.

[0052] In summary, the present invention fixes the stator 1 on the first carrier 3, and the rotor body 22 of the rotor 2 is rotatably mounted on the second carrier 4 through the main bearing 21, the rotating shaft 23 is mounted on the rotor body 22, and the second carrier 4 is detachably mounted on the first carrier 3, so that the rotor 2 and the stator 1 form an open assembly structure, so that different use requirements can be met. Since the rotor body 22 of the rotor 2 is rotatably mounted on the second carrier 4 through the main bearing 21, rather than being mounted and positioned by the rotating shaft and the bearing, its installation structure is more stable, so that the rotor body 22 and the rotating shaft 23 at the upper end rotate more smoothly and more stably, thereby avoiding or reducing the phenomenon of vibration and resonance noise caused by the vibration of the rotor relative to the stator; in addition, since the rotor body 22 of the rotor 2 is rotatably mounted on the second carrier 4 through the main bearing 21, the distance between the main bearing and the center of the rotor 2 is shortened, and the assembly structure is stable, which can reduce vibration harmonic noise.

[0053] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. An axial flux motor structure for stirring household appliances, comprising a stator (1) and a rotor (2) adapted to each other, characterized in that: The stator (1) is fixed on a first carrier (3), and the stator (1) has a plurality of coil windings (11) distributed at equal intervals on a plane. The rotor (2) comprises a rotor body (22) rotatably mounted on a second carrier (4) via a main bearing (21), a rotating shaft (23) fixed to the upper end of the rotor body (22), and a plurality of magnets (24) fixed to the lower end surface of the rotor body (22) and evenly distributed along the circumference and corresponding to the coil windings (11) one by one, wherein the N poles and S poles of the magnets (24) are distributed in the axial direction, and the polarities of two adjacent magnets (24) on the same plane are opposite; The second carrier (4) is detachably mounted on the first carrier (3), and the magnet (24) is placed above the coil winding (11) to form a gap.

2. The axial flux motor structure for stirring household appliances according to claim 1 is characterized in that: The stator (1) comprises a base (12) mounted on a first carrier (3), an annular iron core (13) mounted on the base (12), and a plurality of coil windings (11) wound on the annular iron core (13), wherein the annular iron core (13) is formed with a plurality of core columns (131) distributed at equal intervals on a plane according to a circumference, and the coil windings (11) are wound on the core columns (131).

3. The axial flux motor structure for stirring household appliances according to claim 2 is characterized in that: The base (12) is provided with a plurality of lugs (121) on the outside, and the lugs (121) are provided with through holes (122). A first screw passes through the through holes (122) and is screwed to the first carrier (3). The base (12) is provided with an annular mounting groove (123), the annular iron core (13) is embedded and fixed in the annular mounting groove (123), and the lower part of the coil winding (11) is placed in the annular mounting groove (123), and the upper part of the core column (131) and the coil winding (11) both protrude outside the upper end of the base (12).

4. The axial flux motor structure for stirring household appliances according to claim 1 is characterized in that: The lower end surface of the rotor body (22) is provided with a plurality of grooves (221) distributed at equal intervals along the circumference, the magnet (24) is embedded and fixed in the groove (221), and the lower surface of the magnet (24) is exposed outside the lower end surface of the rotor body (22).

5. The axial flux motor structure for stirring household appliances according to claim 1, characterized in that: The cross-sections of the magnet (24) and the coil winding (11) are in the shape of a sector ring; the first carrier (3) and the second carrier (4) are respectively provided with a first mounting cavity (30) and a second mounting cavity (40); the stator (1) and the rotor (2) are respectively mounted in the first mounting cavity (30) and the second mounting cavity (40), so that the stator (1) and the rotor (2) are isolated from each other.

6. The axial flux motor structure for stirring household appliances according to any one of claims 1 to 5, characterized in that: The lower end of the rotor body (22) is provided with a stepped groove (222), and the outer circle of the main bearing (21) is embedded and fixed in the stepped groove (222) and is clamped and restricted by a retaining spring; a convex shaft (41) is provided in the second carrier (4), and the inner circle sleeve of the main bearing (21) is fixed on the convex shaft (41), so that the rotor body (22) can form a stable rotation relative to the second carrier (4).

7. The axial flux motor structure for stirring household appliances according to any one of claims 1 to 5, characterized in that: The upper end of the rotor body (22) is provided with a non-circular shaft hole (223); the lower end of the rotating shaft (23) is provided with a connecting portion (231) whose size is reduced and matches the non-circular shaft hole (223), and a screw hole (232) is also provided at the bottom of the connecting portion (231); the connecting portion (231) is embedded in the non-circular shaft hole (223) and placed in the rotor body (22); a second screw is screwed fixed to the screw hole (232) of the connecting portion (231), and the head of the second screw is against the outer side of the lower end opening of the non-circular shaft hole (223) so as to limit the lower end of the rotating shaft (23) to the upper end of the rotor body (22).

8. The axial flux motor structure for stirring household appliances according to claim 7, characterized in that: The rotating shaft (23) is installed in the housing (6) through a sealing assembly (5), the sealing assembly (5) comprising a connecting seat (51), a rubber sleeve (52) sleeved on the outside of the connecting seat (51), a connecting cover (56) fixed on the outside of the rubber sleeve (52), a first bearing (53) and a second bearing (54) fixed in the connecting seat (51) and spaced apart, and a rubber plug (55) arranged at the upper end opening of the connecting seat (51). The connecting seat (51) cooperates with the connecting cover through the rubber sleeve (52). (56) is embedded and fixed in the mounting position (61) at the lower end of the housing (6) to form a sealing assembly. The middle part of the rotating shaft (23) is penetrated and fixed with the first bearing (53) and the second bearing (54). The lower end of the rotating shaft (23) extends out of the sealing assembly (5) to be connected with the upper end of the rotor body (22). The upper end of the rotating shaft (23) passes through the rubber plug (55) and then extends into the housing (6) and is installed with the blade (7). The rubber plug (55) is also wrapped around the outer surface of the rotating shaft (23) to form a rotatable sealing assembly.

9. The shaft-type flux motor structure for stirring household appliances according to claim 8, characterized in that: The rubber stopper (55) is provided with a plurality of sealing ribs (551) spaced apart from each other in an upper and lower direction on the outside, and the sealing ribs (551) are in compression contact with the inner wall of the connecting seat (51); the rubber stopper (55) is provided with a first sealing flange (552) extending downwardly and obliquely, and a second sealing flange (553) integrally formed at the upper end of the first sealing flange (552) and extending upwardly and obliquely; the upper end opening of the rubber stopper (55) is also formed with a bending portion (554) and a third sealing flange (555) integrally formed at the end of the bending portion (554) and extending upwardly and obliquely; the first sealing flange (552), the second sealing flange (553) and the third sealing flange (555) all abut against the outer surface of the rotating shaft (23) to form a sealing contact.

10. The axial flux motor structure for stirring household appliances according to any one of claims 1 to 5, characterized in that: A control circuit board (8) is also arranged in the first carrier (3); the stator (1) further comprises an SU terminal, an SV terminal and a SW terminal connected to one or more coil windings (11); the SU terminal, the SV terminal and the SW terminal are connected to the control circuit board (8); the control circuit board (8) comprises an AC input terminal (81), a transformer unit (82) connected to the AC input terminal (81), an AC-DC step-down circuit (83) connected to the output of the transformer unit (82), a DC power supply unit (84) connected to the AC-DC step-down circuit (83), an MCU controller (85) connected to the DC power supply unit (84), and a three-phase full-bridge drive module (86) connected to the output of the transformer unit (82) and the MCU controller (85). After 220V AC is input to the AC input terminal (81), the transformer unit (82) converts the 220V AC into low-voltage AC. One end of the low-voltage AC is output to the three-phase full-bridge drive module (86). The three-phase full-bridge drive module (86) outputs corresponding voltages of SU, SV, and SW to the SU connection terminal, the SV connection terminal, and the SW connection terminal. The other end is stabilized to 5V DC through the AC-DC step-down circuit (83) and the DC power supply unit (84). The 5V DC is supplied to the MCU controller (85). The MCU controller (85) controls the communication with the three-phase full-bridge drive module (86) so that the three-phase full-bridge chip (861) in the three-phase full-bridge drive module (86) outputs different SVPWM voltages for controlling the speed, torque, power, and current of the motor.

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