Driving device and household appliance

Abstract

The utility model discloses a driving device and a household appliance. The driving device comprises an axial magnetic flux motor, a first load and a second load, the axial magnetic flux motor comprises a shell, a stator, a first rotor, a second rotor, a first shaft body and a second shaft body, the shell and the stator are connected in an injection molding mode, and the stator is arranged between the first rotor and the second rotor. The first shaft body is supported on the shell, the first rotor is supported on the first shaft body, the second shaft body is supported on the shell, the second rotor is supported on the second shaft body, and the first shaft body and the second shaft body are separated. The axial side of the axial magnetic flux motor can form output, the other axial side of the axial magnetic flux motor can also form output, driving of the first load and the second load can be achieved through the same axial magnetic flux motor, the number of motors is reduced, and reduction of space occupation of the driving device and reduction of cost are facilitated. The first shaft body and the second shaft body do not influence each other, different specifications can be set according to actual requirements, and subsequent maintenance and replacement are also facilitated.

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 the related art, if two targets need to be driven, 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 at least partly solve one of the technical problems in the related art. 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 housing, a stator, a first rotor, a second rotor, a first shaft body and a second shaft body. The housing and the stator are injection-molded and connected. The stator is arranged between the first rotor and the second rotor. The first shaft body is supported by the housing and the first rotor is supported by the first shaft body. The second shaft body is supported by the housing and the second rotor is supported by the second shaft body. The first shaft body and the second shaft body are separated from each other; and

[0006] A first load, and the first rotor is adapted to drive the first load to rotate; and

[0007] A second load, and the second rotor is adapted to drive the second load to rotate.

[0008] In some embodiments of this application, the axial-flux motor includes bearings. The bearings are arranged on the housing. The first shaft body passes through the bearings. The second shaft body passes through the bearings. The first rotor is adapted to drive the first shaft body to rotate. The second rotor is adapted to drive the second shaft body to rotate.

[0009] In some embodiments of this application, the housing and the bearings are injection-molded and connected.

[0010] In some embodiments of this application, the bearings include:

[0011] A first bearing, and the first shaft body passes through the first bearing; and

[0012] A second bearing, which is arranged at intervals with the first bearing, and the second shaft body passes through the second bearing.

[0013] In some embodiments of the present application, the first rotor includes a first permanent magnet, and the first load is fixedly connected to the first permanent magnet;

[0014] And / or, the second rotor includes a second permanent magnet, and the second load is fixedly connected to the second permanent magnet.

[0015] In some embodiments of the present application, the first load is injection-molded and connected to the first permanent magnet of the first rotor;

[0016] And / or, the second load is injection-molded and connected to the second permanent magnet of the second rotor.

[0017] In some embodiments of the present 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 is injection-molded and connected to the first permanent magnet of the first rotor;

[0018] 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 is injection-molded and connected to the second permanent magnet of the second rotor.

[0019] In some embodiments of the present application, the first load is supported on the first shaft body so as to be adapted to drive the first shaft body to rotate;

[0020] And / or, the second load is supported on the second shaft body so as to be adapted to drive the second shaft body to rotate.

[0021] In some embodiments of the present application, the first load is sleeved and fixed on the first shaft body;

[0022] And / or, the second load is sleeved and fixed on the second shaft body.

[0023] In some embodiments of the present application, the first load is adapted to drive fluid to flow;

[0024] And / or, the second load is adapted to drive fluid to flow.

[0025] In some embodiments of the present application, the first load is a centrifugal impeller;

[0026] And / or, the second load is a centrifugal impeller.

[0027] The second aspect of the present application discloses a household appliance, and the household appliance includes the above-mentioned driving device.

[0028] The technical solution of this application uses an axial-flux motor. An output can be formed on one axial side of the axial-flux motor, and an output can also be formed on the other axial side of the axial-flux motor. The first load is matched with and driven by one axial side of the axial-flux motor, and the second load is matched with and driven by the other axial side of the axial-flux motor. The same axial-flux motor can be used to drive the first load and the second load, reducing the number of motors, which is beneficial to reducing the space occupied by the driving device and reducing costs. In addition, by providing the first shaft body and the second shaft body, the first shaft body and the second shaft body do not affect each other, and different specifications can be set according to actual needs, which also facilitates subsequent maintenance and replacement.

[0029] Other advantages of this application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of this application. Brief Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of this 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.

[0031] Figure 1 Schematic diagram of the driving device in some embodiments;

[0032] Figure 2 Exploded view of the driving device in some embodiments;

[0033] Figure 3 Cross-sectional view of the driving device in some embodiments;

[0034] Figure 4 Schematic diagram of the combination of the housing, stator and bearing in some embodiments;

[0035] Figure 5 Schematic diagram of the combination of the housing, stator and bearing in some embodiments (viewing angle is different from Figure 4 );

[0036] Figure 6 Schematic diagram of the combination of the first load and the first rotor in some embodiments;

[0037] Figure 7 Schematic diagram of the combination of the first load and the first rotor in some embodiments (viewing angle is different from Figure 6 );

[0038] Figure 8 For Figure 6 Cross-sectional view of the structure shown;

[0039] Figure 9 Schematic diagram of the combination of the second load and the second rotor in some embodiments.

[0040] Explanation of the reference numerals in the drawings:

[0041] 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 shaft body 1610, second shaft body 1620, first load 2100, first part 2110, second part 2120, second load 2200, third part 2210, fourth part 2220.

[0042] The realization of the purpose, functional features and advantages of this application will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0044] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0045] In this application, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. shall 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 it 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 this application can be understood according to specific situations.

[0046] In addition, in this application, descriptions such as "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may 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 results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0047] In a first aspect of the present application, a driving device 100 is proposed, 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.

[0048] The axial flux motor 1000 is different from the radial flux motor. The flux lines of the axial flux motor 1000 mainly run along the axial direction, where the axial direction refers to the extension direction of the first shaft body 1610 and the second shaft body 1620 of the central axis ( Figure 1 of the axial flux motor 1000). 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 cooperates with one axial side of the axial flux motor 1000, and the second load 2200 cooperates with the other axial side of the axial flux motor 1000. The so-called cooperation can be direct cooperation or indirect cooperation, 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.

[0049] Specifically, in combination with Figures 1 to 3As shown, the axial flux motor 1000 includes a stator 1300, a first rotor 1100, a second rotor 1200, a first shaft body 1610, a second shaft body 1620 and a housing 1400. 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, so that the stator 1300 is located between the first rotor 1100 and the second rotor 1200. The stator 1300 is arranged 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 synchronously connected to the stator 1300 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. It can be understood that the stator 1300 includes an iron core and windings arranged on the iron core. When the stator 1300 is powered on, the windings are powered on, so that the windings can generate a changing magnetic field. A junction box can be arranged on the housing 1400. The windings are connected to the junction box, and the connection terminals of the controller are connected to the junction box, thereby realizing power supply and / or communication.

[0050] The first shaft body 1610 is supported by the housing 1400, the second shaft body 1620 is supported by the housing 1400, the first rotor 1100 is supported by the first shaft body 1610, and the second rotor 1200 is supported by the second shaft body 1620. In this way, the first rotor 1100 can be rotatably arranged, and the second rotor 1200 can be rotatably arranged. It can be understood that the so-called support can be direct support or indirect support. In this embodiment, the first shaft body 1610 and the second shaft body 1620 are separated, that is, the first shaft body 1610 and the second shaft body 1620 are split parts, and the first shaft body 1610 and the second shaft body 1620 do not affect each other, such as Figure 3The shown first shaft body 1610 and the second shaft body 1620 are arranged at intervals along the axis of the axial flux motor 1000. By setting like this, the first shaft body 1610 and the second shaft body 1620 can be designed to be the same or different. The first shaft body 1610 and the second shaft body 1620 can be designed according to the characteristics of the first load 2100 and the second load 2200, which is more flexible in layout. It is precisely because the first shaft body 1610 and the second shaft body 1620 do not affect each other that the first shaft body 1610 or the second shaft body 1620 can be disassembled and assembled separately during later maintenance, making the maintenance more convenient. In addition, precisely because the first shaft body 1610 and the second shaft body 1620 are separated, there is no need to penetrate the housing 1400, and the housing 1400 better isolates the spaces on both axial sides of the housing 1400.

[0051] On one axial side of the axial flux motor 1000, the output is mainly formed by the first rotor 1100. On the other axial side of the axial flux motor 1000, the output is mainly formed by the second rotor 1200. When the stator 1300 is electrified, it can interact with the first rotor 1100 and the second rotor 1200. The rotation of the first rotor 1100 drives the first load 2100 to rotate, and the rotation of the second rotor 1200 drives the second load 2200 to rotate. Since the first shaft body 1610 and the second shaft body 1620 are separated, the rotation of the first rotor 1100 and the second rotor 1200 can be independent of each other without interference. Moreover, since the first load 2100 and the second load 2200 are distributed on both axial sides of the stator 1300, the operation of the axial flux motor 1000 can also be stable. 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 part between the final target object and the axial flux motor 1000. Similarly, the second load 2200 is the same, and will not be repeated here.

[0052] Combined Figure 3 As shown, in some embodiments, the axial flux motor 1000 includes bearings 1500. The first shaft body 1610 is disposed through the bearings 1500 and is rotatably arranged. The second shaft body 1620 is disposed through the bearings 1500 and is rotatably arranged.

[0053] 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 also 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 first shaft body 1610 passes through the bearing 1500 and is thus supported. When the first rotor 1100 rotates, it can drive the first shaft body 1610 to rotate. The setting of the bearing 1500 can reduce the frictional resistance of the rotation of the first shaft body 1610. The second shaft body 1620 passes through the second bearing 1520 and is thus supported. When the second rotor 1200 rotates, it can drive the second shaft body 1620 to rotate. The setting of the second bearing 1520 can reduce the frictional resistance of the rotation of the second shaft body 1620.

[0054] Further, the housing 1400 is injection-molded with the bearing 1500, that is, at least part of the housing 1400 is injection-molded, and is synchronously connected with 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 with the stator 1300, that is, the housing 1400 is injection-molded with the stator 1300 and the bearing 1500, which enhances the bonding force between the housing 1400, the stator 1300 and the bearing 1500, improves the structural stability and durability, and further improves 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.

[0055] Combined Figures 3 to 5 As shown, in some embodiments, the bearing 1500 includes a first bearing 1510 and a second bearing 1520. The first shaft body 1610 passes through the first bearing 1510 and is rotatably arranged. The second shaft body 1620 passes through the second bearing 1520 and is rotatably arranged. The first bearing 1510 and the second bearing 1520 are arranged at intervals. The first bearing 1510 and the second bearing 1520 arranged at intervals mean that the two are independent of each other, such as Figure 3The first bearing 1510 and the second bearing 1520 are axially spaced along the axis of the axial flux motor 1000. Since the first rotor 1100 and the second rotor 1200 are respectively arranged on the two axial sides of the stator 1300, and the first rotor 1100 drives the first load 2100 to rotate, and the second rotor 1200 drives the second load 2200 to rotate. Therefore, by axially spacing the first bearing 1510 and the second bearing 1520, 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 (the first shaft body 1610 and the second shaft body 1620) caused by thermal expansion can be reduced. It can be understood that the housing 1400 is injection-molded with the bearing 1500. When the bearing 1500 includes the first bearing 1510 and the second bearing 1520, the housing 1400 is injection-molded with the first bearing 1510 and the second bearing 1520 respectively.

[0056] Combined with Figures 1 to 3 and Figures 6 to 8 As shown, in some embodiments, the first rotor 1100 includes a first permanent magnet 1110. The first load 2100 is fixedly connected to the first permanent magnet 1110. The material of the first permanent magnet 1110 can be rare earth permanent magnet material, ferrite permanent magnet material, alnico alloy, FeCrCo alloy, etc., which is 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. By setting it like this, the first rotor 1100 can cancel the support structure design for the first permanent magnet 1110 alone. Even it can be understood that the first rotor 1100 is the first permanent magnet 1110. Compared with separately setting a support structure to support the first permanent magnet 1110, 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.

[0057] Similarly, the second rotor 1200 includes a second permanent magnet 1210. The second load 2200 is fixedly connected to the second permanent magnet 1210. The material of the second permanent magnet 1210 can be rare earth permanent magnet material, ferrite permanent magnet material, alnico alloy, FeCrCo alloy, etc., which is not limited in this embodiment. In this embodiment, 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 such a setting, the second rotor 1200 can cancel the design of the support structure for the second permanent magnet 1210 alone. Even it can be understood that the second rotor 1200 is the second permanent magnet 1210. Compared with separately setting a support structure to support 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.

[0058] Combined Figures 1 to 3 and Figure 6 、 Figure 7 and Figure 9 As shown, 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 with disposing the first permanent magnet 1110 on the side of the first load 2100 facing away from the stator 1300.

[0059] 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 with disposing the second permanent magnet 1210 on the side of the second load 2200 facing away from the stator 1300.

[0060] Further, in some embodiments, the first load 2100 and the first permanent magnet 1110 are injection-molded and connected, 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-molded 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.

[0061] Similarly, in some embodiments, the second load 2200 is injection-molded and connected to the second permanent magnet 1210, that is, at least a 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 a 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-molded 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.

[0062] Combined with 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. During the injection molding process of the second part 2120, it is connected to the first permanent magnet 1110, 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.

[0063] Similarly, combined with Figure 2 、 Figure 3 and Figure 9As shown, in some embodiments, the second load 2200 includes 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 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 part 2210 and a fourth part 2220. The third part 2210 is injection-molded, and the fourth part 2220 is connected to the second permanent magnet 1210 during the injection-molding process, and then the third part 2210 and the fourth part 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 arranged on the side of the second load 2200 facing the stator 1300, the fourth part 2220 needs to be designed between the third part 2210 and the stator 1300.

[0064] Combined Figures 1 to 3 As shown, in some embodiments, the first load 2100 is supported on the first shaft body 1610 and is adapted to drive the first shaft body 1610 to rotate. Since the first permanent magnet 1110 is fixedly connected to the first load 2100, by supporting the first load 2100 on the shaft body 1600, the support for the first rotor 1100 (the first permanent magnet 1110) can be realized. By such an arrangement, when acted upon by the stator 1300, the first rotor 1100 (the first permanent magnet 1110) drives the first load 2100 to rotate, and the first load 2100 drives the first shaft body 1610 to rotate (that is, the first rotor 1100 indirectly drives the first shaft body 1610 to rotate), and the setting of the first bearing 1510 can reduce the friction force.

[0065] Similarly, the second load 2200 is supported on the second shaft body 1620 and is adapted to drive the second shaft body 1620 to rotate. Since the second permanent magnet 1210 is fixedly connected to the second load 2200, by supporting the second load 2200 on the shaft body 1600, the support for the second rotor 1200 (the second permanent magnet 1210) can be realized. By such an arrangement, when acted upon by the stator 1300, the second rotor 1200 (the second permanent magnet 1210) drives the second load 2200 to rotate, and the second load 2200 drives the second shaft body 1620 to rotate (that is, the second rotor 1200 indirectly drives the second shaft body 1620 to rotate), and the setting of the second bearing 1520 can reduce the friction force.

[0066] There are many ways for the first load 2100 to drive the first shaft 1610 to rotate. For example, the first load 2100 is connected to the first shaft 1610 by a key connection, a screw connection, a coupling connection, a sleeve connection, etc., so as to be supported on the first shaft 1610. The rotation of the first load 2100 can drive the first shaft 1610 to rotate. The first load 2100 can be mounted on the first shaft 1610 and connected and fixed to the first shaft 1610, so that the first load 2100 can drive the first shaft 1610 to rotate.

[0067] The same is true for the second load 2200. There are many ways for the second load 2200 to drive the second shaft 1620 to rotate. For example, the second load 2200 is connected to the second shaft 1620 by a key connection, a screw connection, a coupling connection, a sleeve connection, etc., so as to be supported on the second shaft 1620. The rotation of the second load 2200 can drive the second shaft 1620 to rotate. The second load 2200 can be mounted on the second shaft 1620 and connected and fixed to the second shaft 1620, so that the second load 2200 can drive the second shaft 1620 to rotate.

[0068] Combination Figures 1 to 3 As 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 is understandable 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. 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 prevent the fluid from flowing from one axial side of the housing 1400 to the other axial side as much as possible.

[0069] Further, 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 discharge along 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 occupation in the axial direction and 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 discharge along 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 occupation in the axial direction and is more conducive to the arrangement of the structure.

[0070] The second aspect of the present application discloses a household appliance, which includes the above-mentioned driving device 100. 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 floor sweeper, and the floor sweeper has two rotatable brush heads. One of the brush heads is regarded as the first load 2100, and the other brush head is regarded as the second load 2200. Of course, the household appliance can also be of other types, which will not be elaborated here one by one.

[0071] The axial flux motor 1000 includes a stator 1300, a first rotor 1100, a second rotor 1200, a first shaft body 1610, a second shaft body 1620 and a housing. 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, so that the stator 1300 is located between the first rotor 1100 and the second rotor 1200. The first shaft body 1610 is supported by the stator 1300, the second shaft body 1620 is supported by the stator 1300, the first rotor 1100 is supported by the first shaft body 1610, and the second rotor 1200 is supported by the second shaft body 1620. In this way, the first rotor 1100 can be rotatably arranged, the second rotor 1200 can be rotatably arranged, and the stator 1300 is arranged on the housing 1400. By arranging the housing 1400, the housing 1400 can be connected and fixed to the installation area. 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 synchronously connected to the stator 1300 during the molding process, so that the stator 1300 is embedded in at least part of the housing 1400. 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.

[0072] 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 has at least the beneficial effects brought by the technical solution of the above embodiment, which will not be repeated here.

[0073] 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 in 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 housing (1400), a stator (1300), a first rotor (1100), a second rotor (1200), a first shaft body (1610) and a second shaft body (1620), 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 shaft body (1610) being supported by the housing (1400) and the first rotor (1100) being supported by the first shaft body (1610), the second shaft body (1620) being supported by the housing (1400) and the second rotor (1200) being supported by the second shaft body (1620), the first shaft body (1610) and the second shaft body (1620) being separated from each other; and A first load (2100), the first rotor (1100) being adapted to drive the first load (2100) to rotate; and A second load (2200), the second rotor (1200) being adapted to drive the second load (2200) to rotate.

2. The drive device (100) according to claim 1, characterized in that, The axial flux motor (1000) comprises bearings (1500), the bearings (1500) being disposed in the housing (1400), the first shaft body (1610) passing through the bearings (1500), the second shaft body (1620) passing through the bearings (1500), the first rotor (1100) being adapted to drive the first shaft body (1610) to rotate, and the second rotor (1200) being adapted to drive the second shaft body (1620) to rotate.

3. The drive device (100) according to claim 2, characterized in that, The housing (1400) and the bearings (1500) are injection-molded and connected.

4. The drive device (100) according to claim 2, characterized in that The bearings (1500) comprise: A first bearing (1510), the first shaft body (1610) passing through the first bearing (1510); and A second bearing (1520), arranged at intervals with the first bearing (1510), the second shaft body (1620) passing through the second bearing (1520).

5. The drive device (100) according to claim 1, characterized in that, The first rotor (1100) comprises a first permanent magnet (1110), the first load (2100) and the first permanent magnet (1110) being fixedly connected; And / or, the second rotor (1200) comprises a second permanent magnet (1210), the second load (2200) and the second permanent magnet (1210) being fixedly connected.

6. The drive device (100) according to claim 5, characterized in that, The first load (2100) and the first permanent magnet (1110) of the first rotor (1100) are injection-molded and connected; And / or, the second load (2200) and the second permanent magnet (1210) of the second rotor (1200) are injection-molded and connected.

7. The drive device (100) according to claim 6, 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) being welded, and the second part (2120) and the first permanent magnet (1110) of the first rotor (1100) being injection-molded and connected; And / or, the second load (2200) includes 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 a second permanent magnet (1210) of the second rotor (1200) are injection-molded and connected.

8. The drive device (100) according to claim 5, characterized in that, The first load (2100) is supported on the first shaft body (1610) to be adapted to drive the first shaft body (1610) to rotate; And / or, the second load (2200) is supported on the second shaft body (1620) to be adapted to drive the second shaft body (1620) to rotate.

9. The drive device (100) according to claim 8, characterized in that, The first load (2100) is sleeved and fixed on the first shaft body (1610); And / or, the second load (2200) is sleeved and fixed on the second shaft body (1620).

10. 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.

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

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

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