Driving device and household appliance

Abstract

The driving device comprises an axial magnetic flux motor, a first load and a second load, the axial magnetic flux motor comprises a first rotor, a second rotor, a stator and a shell, the shell and the stator are connected in an injection molding mode, the stator is arranged between the first rotor and the second rotor, the first rotor comprises a first permanent magnet, and the second rotor comprises a second permanent magnet. The second rotor comprises a second permanent magnet, the first load is fixedly connected with the first permanent magnet, and the second load is fixedly connected with the second permanent magnet. According to the technical scheme, the axial magnetic flux motor is adopted, output can be formed on one axial side of the axial magnetic flux motor, output can also be formed on the other axial side of the axial magnetic flux motor, the first load is matched with the axial side of the axial magnetic flux motor and driven by the axial side of the axial magnetic flux motor, and the second load is matched with the other axial side of the axial magnetic flux motor and driven by the axial side of the axial magnetic flux motor. The first load and the second load can be driven through the same axial magnetic flux motor, the number of motors is reduced, and the occupied space and the cost can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of motors, and particularly to a driving device and a household appliance. Background Art

[0002] In related technologies, when it is necessary to drive two targets, two independent motors are often set up. One motor drives one target, and the other motor drives the other target, thus forming two sets of systems. Since two motors are set up, the volume occupied is relatively large and the cost is relatively high. Summary of the Utility Model

[0003] This application aims to solve at least one of the technical problems in the related technologies to some extent. For this purpose, this application proposes a driving device.

[0004] To achieve the above object, this application discloses a driving device, which includes:

[0005] An axial flux motor, which includes a first rotor, a second rotor, a stator and a housing. The housing and the stator are injection-molded and connected. The stator is arranged between the first rotor and the second rotor. The first rotor includes a first permanent magnet, and the second rotor includes a second permanent magnet;

[0006] A first load, fixedly connected to the first permanent magnet; and

[0007] A second load, fixedly connected to the second permanent magnet.

[0008] In some embodiments of this application, the first permanent magnet is arranged on the side of the first load facing the stator;

[0009] And / or, the second permanent magnet is arranged on the side of the second load facing the stator.

[0010] In some embodiments of this application, the first load and the first permanent magnet are injection-molded and connected;

[0011] And / or, the second load and the second permanent magnet are injection-molded and connected.

[0012] In some embodiments of this application, the first load includes a first part and a second part, the first part and the second part are welded, and the second part and the first permanent magnet are injection-molded and connected;

[0013] And / or, the second load includes a third part and a fourth part, the third part and the fourth part are welded, and the fourth part and the second permanent magnet are injection-molded and connected.

[0014] In some embodiments of the present application, the axial flux motor comprises:

[0015] a bearing disposed on the housing; and

[0016] The shaft body is passed through the bearing, and the first load and the second load are supported on the shaft body and are suitable for driving the shaft body to rotate.

[0017] In some embodiments of the present application, the housing and the bearing are connected by injection molding.

[0018] In some embodiments of the present application, the bearing includes a first bearing and a second bearing arranged alternately, and the shaft body passes through the first bearing and the second bearing.

[0019] In some embodiments of the present application, the first load sleeve is fixed to the shaft;

[0020] And / or, the second load sleeve is fixed to the shaft.

[0021] In some embodiments of the present application, the first load is suitable for driving the fluid to flow;

[0022] And / or, the second load is suitable for driving fluid flow.

[0023] In some embodiments of the present application, the first load is a centrifugal impeller;

[0024] And / or, the second load is a centrifugal impeller.

[0025] A second aspect of the present application discloses a household appliance, which comprises the above-mentioned driving device.

[0026] The technical solution of the present application adopts an axial flux motor. One axial side of the axial flux motor can form an output, and the other axial side of the axial flux motor can also form an output. The first load cooperates with the one axial side of the axial flux motor and is driven by it, and the second load cooperates with the other axial side of the axial flux motor and is driven by it. The first load and the second load can be driven by the same axial flux motor, reducing the number of motors, which is beneficial to reducing the space occupied by the drive device and reducing costs.

[0027] Other advantages of the present application will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other designs can also be obtained based on the structures shown in these drawings.

[0029] Figure 1 Schematic diagram of a driving device in some embodiments;

[0030] Figure 2 Exploded view of a driving device in some embodiments;

[0031] Figure 3 Cross-sectional view of a driving device in some embodiments;

[0032] Figure 4 Schematic diagram of the combination of the housing, stator and bearing in some embodiments;

[0033] Figure 5 Schematic diagram of the combination of the housing, stator and bearing in some embodiments (different viewing angles from Figure 4 );

[0034] Figure 6 Schematic diagram of the combination of the first load and the first permanent magnet in some embodiments;

[0035] Figure 7 Schematic diagram of the combination of the first load and the first permanent magnet in some embodiments (different viewing angles from Figure 6 );

[0036] Figure 8 For Figure 6 Cross-sectional view of the shown structure;

[0037] Figure 9 Schematic diagram of the combination of the second load and the second permanent magnet in some embodiments.

[0038] Explanation of the reference numerals in the drawings:

[0039] Driving device 100, axial flux motor 1000, first rotor 1100, first permanent magnet 1110, second rotor 1200, second permanent magnet 1210, stator 1300, housing 1400, bearing 1500, first bearing 1510, second bearing 1520, shaft body 1600, first load 2100, first part 2110, second part 2120, second load 2200, third part 2210, fourth part 2220.

[0040] The realization, functional features and advantages of the objectives of the present application will be further described with reference to the embodiments and the drawings. Detailed implementation manners

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present application.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, the directional indications will also change accordingly.

[0043] In the present application, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0044] In addition, in the present application, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0045] A first aspect of the present application proposes a driving device 100, in combination with Figure 1 and Figure 2 As shown, in some embodiments, the driving device 100 includes an axial-flux motor 1000, a first load 2100, and a second load 2200. One axial side of the axial-flux motor 1000 is used to drive the first load 2100 to rotate, and the other axial side of the axial-flux motor 1000 drives the second load 2200 to rotate.

[0046] The axial-flux motor 1000 is different from the radial-flux motor. The magnetic flux lines of the axial-flux motor 1000 mainly extend along the axis. Here, the axis refers to the central axis of the axial-flux motor 1000 (Figure 1 In the extending direction of the shaft body 1600), an output can be formed on one axial side of the axial flux motor 1000, and an output can also be formed on the other axial side of the axial flux motor 1000. The first load 2100 is engaged with one axial side of the axial flux motor 1000, and the second load 2200 is engaged with the other axial side of the axial flux motor 1000. The so-called engagement can be direct engagement or indirect engagement, that is, one axial side of the axial flux motor 1000 can transmit force to the first load 2100, and the other axial side of the axial flux motor 1000 can transmit force to the second load 2200. In this way, the first load 2100 and the second load 2200 can be driven to rotate by the same axial flux motor 1000. By such an arrangement, the number of motors is reduced, which is beneficial to reducing the space occupation and cost.

[0047] It can be understood that the so-called first load 2100 is a component that is driven by the axial flux motor 1000 to generate an action. The first load 2100 can be the final target object or a transmission member between the final target object and the axial flux motor 1000. Similarly, the second load 2200 is also the same, and will not be repeated here.

[0048] Specifically, in combination with Figures 1 to 3As shown, the axial flux motor 1000 includes a stator 1300, a first rotor 1100 and a second rotor 1200. The so-called first rotor 1100 and second rotor 1200 are the parts that are rotatable relative to the stator 1300. The first rotor 1100 is arranged on one axial side of the stator 1300, and the second rotor 1200 is arranged on the other axial side of the stator 1300, that is, the stator 1300 is located between the first rotor 1100 and the second rotor 1200. The first rotor 1100 includes a first permanent magnet 1110, and the second rotor 1200 includes a second permanent magnet 1210. The materials of the first permanent magnet 1110 and the second permanent magnet 1210 can be rare earth permanent magnet materials, ferrite permanent magnet materials, alnico alloys, Fe-Cr-Co alloys, etc., which are not limited in this embodiment. In this embodiment, the first permanent magnet 1110 is fixedly connected to the first load 2100. The first load 2100 not only has its own function but also serves as the support framework of the first permanent magnet 1110, so that the first permanent magnet 1110 and the first load 2100 are combined into a rotor structure. The second permanent magnet 1210 is fixedly connected to the second load 2200. The second load 2200 not only has its own function but also serves as the support framework of the second permanent magnet 1210, so that the second permanent magnet 1210 and the second load 2200 are combined into a rotor structure. By setting like this, the first rotor 1100 can cancel the design of the support structure for the first permanent magnet 1110 alone, and the second rotor 1200 can also cancel the design of the support structure for the second permanent magnet 1210 alone. Even it can be understood that the first rotor 1100 is the first permanent magnet 1110, and the second rotor 1200 is the second permanent magnet 1210. Compared with separately setting a support structure to support the first permanent magnet 1110 and the second permanent magnet 1210, this embodiment is beneficial to compressing the space occupied by the driving device 100 and is more conducive to the miniaturization design of the driving device 100.

[0049] On one axial side of the axial flux motor 1000, the output is mainly formed by the first rotor 1100 (the first permanent magnet 1110). On the other axial side of the axial flux motor 1000, the output is mainly formed by the second rotor 1200 (the second permanent magnet 1210). When the stator 1300 is electrified, it can interact with the first rotor 1100 (the first permanent magnet 1110) and the second rotor 1200 (the second permanent magnet 1210), thereby driving the first load 2100 and the second load 2200 to rotate. The first load 2100 and the second load 2200 are distributed on the two axial sides of the stator 1300, which can also reduce or even avoid the eccentric wear of the shafting of the axial flux motor 1000 and can make the operation of the axial flux motor 1000 more stable.

[0050] Combine Figure 3As shown, the axial flux motor 1000 further includes a housing 1400. The stator 1300 is disposed on the housing 1400. By providing the housing 1400, the housing 1400 can be connected and fixed to the installation area, thereby realizing the support of the axial flux motor 1000. At the same time, the housing 1400 can also wrap and protect the stator 1300, improving the protection ability of the stator 1300. The housing 1400 is injection-molded and connected to the stator 1300, that is, at least part of the housing 1400 is injection-molded, and is connected to the stator 1300 synchronously during the molding process, so that the stator 1300 is embedded in at least part of the housing 1400. For example, the stator 1300 is placed in a mold, and plastic is injected into the mold. After the plastic is molded, it forms the housing 1400 and the housing 1400 and the stator 1300 are combined together. Through the injection-molded connection between the housing 1400 and the stator 1300, the housing 1400 and the stator 1300 are tightly combined, improving the structural stability and durability, and can eliminate / reduce subsequent assembly processes, improving production efficiency. In addition, since the housing 1400 is injection-molded and connected to the stator 1300, it is beneficial to isolate the spaces on both axial sides of the housing 1400. It can be understood that the stator 1300 includes an iron core and windings disposed on the iron core. When the stator 1300 is energized, the windings are energized, so that the windings can generate a changing magnetic field. A junction box can be provided on the housing 1400, the windings are connected to the junction box, and the wiring terminals of the controller are connected to the junction box, thereby realizing power supply and / or communication.

[0051] Combined Figure 2 and Figure 3 As shown in combination with Figure 2 and Figure 3 , in some embodiments, the first permanent magnet 1110 is disposed on the side of the first load 2100 facing the stator 1300. Disposing the first permanent magnet 1110 on the side of the first load 2100 facing the stator 1300 is beneficial to improving the efficiency of the axial flux motor 1000 compared to disposing the first permanent magnet 1110 on the side of the first load 2100 facing away from the stator 1300.

[0052] The same is true for the second permanent magnet 1210. The second permanent magnet 1210 is disposed on the side of the second load 2200 facing the stator 1300. Disposing the second permanent magnet 1210 on the side of the second load 2200 facing the stator 1300 is beneficial to improving the efficiency of the axial flux motor 1000 compared to disposing the second permanent magnet 1210 on the side of the second load 2200 facing away from the stator 1300.

[0053] Furthermore, in some embodiments, the first load 2100 is injection-molded and connected to the first permanent magnet 1110, that is, at least part of the first load 2100 is injection-molded, and is synchronously connected to the first permanent magnet 1110 during the molding process, so that the first permanent magnet 1110 is embedded in at least part of the first load 2100. For example, the first permanent magnet 1110 is placed in a mold, and plastic is injected into the mold. After the plastic is molded, it forms the first load 2100 and the first load 2100 and the first permanent magnet 1110 are combined together. Through the injection-molding connection between the first load 2100 and the first permanent magnet 1110, the first load 2100 and the first permanent magnet 1110 are tightly combined, improving the structural stability and durability, and can eliminate / reduce subsequent assembly processes, improving production efficiency.

[0054] Similarly, in some embodiments, the second load 2200 is injection-molded and connected to the second permanent magnet 1210, that is, at least part of the second load 2200 is injection-molded, and is synchronously connected to the second permanent magnet 1210 during the molding process, so that the second permanent magnet 1210 is embedded in at least part of the second load 2200. For example, the second permanent magnet 1210 is placed in a mold, and plastic is injected into the mold. After the plastic is molded, it forms the second load 2200 and the second load 2200 and the second permanent magnet 1210 are combined together. Through the injection-molding connection between the second load 2200 and the second permanent magnet 1210, the second load 2200 and the second permanent magnet 1210 are tightly combined, improving the structural stability and durability, and can eliminate / reduce subsequent assembly processes, improving production efficiency.

[0055] Combined Figure 2 、 Figure 3 and Figures 6 to 8 As shown, in some embodiments, the first load 2100 includes a first part 2110 and a second part 2120. The first part 2110 and the second part 2120 are welded, and the second part 2120 is injection-molded and connected to the first permanent magnet 1110. It can be understood that the first load 2100 may not be convenient for one-time injection molding. Therefore, the first load 2100 can be designed to be prepared by a method of welding and fixing split components. For example, the first load 2100 includes a first part 2110 and a second part 2120. The first part 2110 is injection-molded, and the second part 2120 is connected to the first permanent magnet 1110 during the injection-molding process of the second part 2120, and then the first part 2110 and the second part 2120 are welded (such as ultrasonic welding). In this way, it can not only meet the structural design of the first load 2100, but also ensure the bonding strength between the first load 2100 and the first permanent magnet 1110 to a certain extent. When the first permanent magnet 1110 is arranged on the side of the first load 2100 facing the stator 1300, the second part 2120 needs to be designed between the first part 2110 and the stator 1300.

[0056] Similarly, in combination with Figure 2 , Figure 3 and Figure 9 as shown, in some embodiments, the second load 2200 includes a third portion 2210 and a fourth portion 2220. The third portion 2210 and the fourth portion 2220 are welded, and the fourth portion 2220 is injection-molded and connected to the second permanent magnet 1210. It can be understood that it may not be convenient to integrally injection-mold the second load 2200. Therefore, the second load 2200 can be designed to be prepared by a method of fixing split components by welding. For example, the second load 2200 includes a third portion 2210 and a fourth portion 2220. The third portion 2210 is injection-molded, and the fourth portion 2220 is connected to the second permanent magnet 1210 during the injection-molding process, and then the third portion 2210 and the fourth portion 2220 are welded (such as ultrasonic welding). In this way, both the structural design of the second load 2200 can be satisfied, and to a certain extent, the bonding strength between the second load 2200 and the second permanent magnet 1210 can be ensured. When the second permanent magnet 1210 is disposed on the side of the second load 2200 facing the stator 1300, the fourth portion 2220 needs to be designed between the third portion 2210 and the stator 1300.

[0057] In combination with Figures 1 to 3 as shown, in some embodiments, the axial flux motor 1000 includes a bearing 1500 and a shaft body 1600. The bearing 1500 is disposed in the housing 1400, and the shaft body 1600 passes through the bearing 1500.

[0058] Specifically, the main function of the bearing 1500 is to support the mechanical rotating body and reduce the friction coefficient during movement. There are various types of bearings 1500, which can be selected according to the actual situation. For example, the bearing 1500 is a graphite bearing. The bearing 1500 is arranged in the housing 1400, that is, fixed on the housing 1400. There are various connection and fixing methods between the bearing 1500 and the housing 1400, as long as the bearing 1500 can be fixed on the housing 1400. For example, the bearing 1500 and the housing 1400 are connected and fixed by interference fit, lock nut fastening, sleeve positioning and other methods. The shaft body 1600 passes through the bearing 1500 and can support the first rotor 1100 (the first permanent magnet 1110) and the second rotor 1200 (the second permanent magnet 1210), and can even support the first load 2100 and the second load 2200. The so-called support can be direct support or indirect support. Since the first permanent magnet 1110 is connected and fixed to the first load 2100, and the second permanent magnet 1210 is connected and fixed to the second load 2200, by supporting the first load 2100 and the second load 2200 on the shaft body 1600, the support for the first rotor 1100 (the first permanent magnet 1110) and the second rotor 1200 (the second permanent magnet 1210) can be realized. By setting it in this way, when affected by the stator 1300, the first load 2100 and the second load 2200 rotate and drive the shaft body 1600 to rotate, and the setting of the bearing 1500 can reduce the friction force.

[0059] There are various ways for the first load 2100 to drive the shaft body 1600 to rotate. For example, the first load 2100 is connected to the shaft body 1600 by key connection, screw connection, coupling connection, sleeve connection and other methods to be supported on the shaft body 1600. When the first load 2100 rotates, it can drive the shaft body 1600 to rotate. The first load 2100 can be sleeved on the shaft body 1600 and connected and fixed to the shaft body 1600, so as to facilitate the first load 2100 to drive the shaft body 1600 to rotate.

[0060] The same is true for the second load 2200. There are various ways for the second load 2200 to drive the shaft body 1600 to rotate. For example, the second load 2200 is connected to the shaft body 1600 by key connection, screw connection, coupling connection, sleeve connection and other methods to be supported on the shaft body 1600. When the second load 2200 rotates, it can drive the shaft body 1600 to rotate. The second load 2200 can be sleeved on the shaft body 1600 and connected and fixed to the shaft body 1600, so as to facilitate the second load 2200 to drive the shaft body 1600 to rotate.

[0061] Furthermore, in combination with Figures 3 to 5As shown, in some embodiments, the housing 1400 is injection-molded and connected to the bearing 1500, that is, at least part of the housing 1400 is injection-molded, and is synchronously connected to the bearing 1500 during the molding process, so that the bearing 1500 is embedded in at least part of the housing 1400. As can be seen from the above, the housing 1400 is also injection-molded and connected to the stator 1300, that is, the housing 1400 is injection-molded and connected to the stator 1300 and the bearing 1500, enhancing the bonding force between the housing 1400, the stator 1300 and the bearing 1500, improving the structural stability and durability, and further improving the production efficiency. For example, the stator 1300 and the bearing 1500 are placed in a mold, and then plastic is injected into the mold. After the plastic is molded, it forms the housing 1400 and the housing 1400 is combined with the stator 1300 and the bearing 1500.

[0062] Continue to combine Figures 3 to 5 As shown, in some embodiments, the bearing 1500 includes a first bearing 1510 and a second bearing 1520. The first bearing 1510 and the second bearing 1520 are arranged at intervals, and the shaft body 1600 passes through the first bearing 1510 and the second bearing 1520. The first bearing 1510 and the second bearing 1520 arranged at intervals mean that the two are independent of each other. For example, Figure 3 the first bearing 1510 and the second bearing 1520 are arranged at intervals along the axial direction of the axial flux motor 1000. Since the first rotor 1100 (first permanent magnet 1110) and the second rotor 1200 (second permanent magnet 1210) are respectively arranged on the two axial sides of the stator 1300, and the first load 2100 and the second load 2200 are respectively driven to rotate on the two axial sides of the axial flux motor 1000, therefore, through the first bearing 1510 and the second bearing 1520 arranged at intervals, the wear and failure risks of a single bearing can be reduced, the stability of a single bearing can be improved, and the offset of the shaft body 1600 caused by thermal expansion can be reduced. It can be understood that the housing 1400 is injection-molded and connected to the bearing 1500. When the bearing 1500 includes the first bearing 1510 and the second bearing 1520, the housing 1400 is injection-molded and connected to the first bearing 1510 and the second bearing 1520 respectively.

[0063] Combine Figures 1 to 3As shown, in some embodiments, the first load 2100 is used to drive the flow of fluid, that is, the axial flux motor 1000 drives the first load 2100 to rotate, thereby driving the flow of fluid, and the flow of fluid mainly proceeds along the flow channel, which can be curved or straight, so that the flow channel, the first load 2100 and the axial flux motor 1000 are convenient to cooperate. Similarly, the second load 2200 is used to drive the flow of fluid, that is, the axial flux motor 1000 drives the second load 2200 to rotate, thereby driving the flow of fluid, and the flow of fluid mainly proceeds along the flow channel, which can be curved or straight, so that the flow channel, the second load 2200 and the axial flux motor 1000 are convenient to cooperate. For example, the first load 2100 is an impeller, and the second load 2200 is also an impeller. In this way, the first load 2100 can be coaxially arranged with the axial flux motor 1000, and the second load 2200 can be coaxially arranged with the axial flux motor 1000, and the flow of fluid is driven by the rotation of the impeller. It can be understood that the fluid includes but is not limited to gas and liquid, and the size / structure of the first load 2100 and the second load 2200 can be the same or different.

[0064] Since the housing 1400 and the stator 1300 are injection molded, it is beneficial to isolate the axial spaces on both sides of the housing 1400, and to avoid the fluid from flowing from one axial side of the housing 1400 to the other axial side as much as possible. Furthermore, the first load 2100 is a centrifugal impeller, so that the fluid can enter the first load 2100 along the axial direction of the first load 2100 and be discharged in a substantially radial direction. In this way, when the first load 2100 is designed to be coaxial with the axial flux motor 1000, it is beneficial to reduce the space occupied in the axial direction, which is more conducive to the arrangement of the structure. Similarly, the second load 2200 is a centrifugal impeller, so that the fluid can enter the second load 2200 along the axial direction of the second load 2200 and be discharged in a substantially radial direction. In this way, when the second load 2200 is designed to be coaxial with the axial flux motor 1000, it is beneficial to reduce the space occupied in the axial direction, which is more conducive to the arrangement of the structure.

[0065] The second aspect of the present application discloses a household appliance, which includes the above-mentioned driving device 100, and the driving device 100 includes an axial flux motor 1000, a first load 2100 and a second load 2200. One axial side of the axial flux motor 1000 is used to drive the first load 2100 to rotate, and the other axial side of the axial flux motor 1000 drives the second load 2200 to rotate. For example, the household appliance is a sweeper, and the sweeper has two rotatable brush heads, one of which is regarded as the first load 2100, and the other is regarded as the second load 2200. Of course, the household appliance can also be of other types, which will not be described one by one here.

[0066] The axial flux motor 1000 includes a stator 1300, a first rotor 1100, a second rotor 1200 and a housing 1400. The first rotor 1100 is arranged on one axial side of the stator 1300, and the second rotor 1200 is arranged on the other axial side of the stator 1300, that is, the stator 1300 is located between the first rotor 1100 and the second rotor 1200. The first rotor 1100 includes a first permanent magnet 1110, and the second rotor 1200 includes a second permanent magnet 1210. The first permanent magnet 1110 is fixedly connected to a first load 2100. The first load 2100 not only has its own function but also serves as a support framework for the first permanent magnet 1110, so that the first permanent magnet 1110 and the first load 2100 are combined into a rotor structure. The second permanent magnet 1210 is fixedly connected to a second load 2200. The second load 2200 not only has its own function but also serves as a support framework for the second permanent magnet 1210, so that the second permanent magnet 1210 and the second load 2200 are combined into a rotor structure. By such an arrangement, the first rotor 1100 can cancel the design of the support structure for the first permanent magnet 1110 alone, and the second rotor 1200 can also cancel the design of the support structure for the second permanent magnet 1210 alone. Even it can be understood that the first rotor 1100 is the first permanent magnet 1110, and the second rotor 1200 is the second permanent magnet 1210. Compared with separately arranging a support structure to support the first permanent magnet 1110 and the second permanent magnet 1210, this embodiment is beneficial to compressing the space occupied by the driving device 100 and is more conducive to the miniaturization design of the driving device 100. The stator 1300 is arranged on the housing 1400. By arranging the housing 1400, the housing 1400 can be fixedly connected to the installation area, thereby realizing the support for the axial flux motor 1000. At the same time, the housing 1400 can also wrap and protect the stator 1300, improving the protection ability for the stator 1300.

[0067] It can be understood that the driving device 100 of the household appliance in this embodiment adopts the technical solution of the above embodiment, and thus at least has the beneficial effects brought by the technical solution of the above embodiment, which will not be repeated here.

[0068] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural transformation made under the concept of the present application by using the content of the specification and drawings of the present application, or directly / indirectly applied to other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A driving device (100), characterized in that, Comprising: An axial flux motor (1000), the axial flux motor (1000) comprising a first rotor (1100), a second rotor (1200), a stator (1300) and a housing (1400), the housing (1400) and the stator (1300) being injection-molded and connected, the stator (1300) being disposed between the first rotor (1100) and the second rotor (1200), the first rotor (1100) comprising a first permanent magnet (1110), and the second rotor (1200) comprising a second permanent magnet (1210); A first load (2100), fixedly connected to the first permanent magnet (1110); and A second load (2200), fixedly connected to the second permanent magnet (1210).

2. The drive device (100) according to claim 1, characterized in that, The first permanent magnet (1110) is disposed on a side of the first load (2100) facing the stator (1300); And / or, the second permanent magnet (1210) is disposed on a side of the second load (2200) facing the stator (1300).

3. The drive device (100) according to claim 1, characterized in that, The first load (2100) and the first permanent magnet (1110) are injection-molded and connected; And / or, the second load (2200) and the second permanent magnet (1210) are injection-molded and connected.

4. The drive device (100) according to claim 3, characterized in that, The first load (2100) comprises a first part (2110) and a second part (2120), the first part (2110) and the second part (2120) are welded, and the second part (2120) and the first permanent magnet (1110) are injection-molded and connected; And / or, the second load (2200) comprises a third part (2210) and a fourth part (2220), the third part (2210) and the fourth part (2220) are welded, and the fourth part (2220) and the second permanent magnet (1210) are injection-molded and connected.

5. The drive device (100) according to claim 1, characterized in that, The axial flux motor (1000) comprises: Bearings (1500), disposed on the housing (1400); and A shaft body (1600), passing through the bearings (1500), the first load (2100) and the second load (2200) being supported on the shaft body (1600) and adapted to drive the shaft body (1600) to rotate.

6. The drive device (100) according to claim 5, characterized in that, The housing (1400) and the bearings (1500) are injection-molded and connected.

7. The drive device (100) according to claim 5, characterized in that, The bearings (1500) comprise a first bearing (1510) and a second bearing (1520) arranged alternately, and the shaft body (1600) passes through the first bearing (1510) and the second bearing (1520).

8. The drive device (100) according to claim 5, characterized in that, The first load (2100) is sleeved and fixed on the shaft body (1600); And / or, the second load (2200) is sleeved and fixed on the shaft body (1600).

9. The drive device (100) according to claim 1, characterized in that, The first load (2100) is adapted to drive fluid to flow; And / or, the second load (2200) is adapted to drive fluid to flow.

10. The drive device (100) according to claim 9, characterized in that, The first load (2100) is a centrifugal impeller; And / or, the second load (2200) is a centrifugal impeller.

11. An appliance, characterized in that, Comprising the driving device (100) according to any one of claims 1 to 10.

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