Driving device and household appliance

Abstract

The utility model discloses a driving device and a household electrical 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 bearing and a second bearing, the shell and the stator are in injection molding connection, the stator is arranged between the first rotor and the second rotor, and the first bearing is arranged between the first rotor and the second rotor. The first rotor is fixedly connected with the first bearing to rotate through the first bearing, the second rotor is fixedly connected with the second bearing to rotate through the second bearing, the first rotor is suitable for driving a first load to rotate, and the second rotor is suitable for driving a second load to rotate. 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.

Description

Technical Field

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

[0002] In related technologies, if 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 housing, a stator, a first rotor, a second rotor, a first bearing and a second bearing. 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 is fixedly connected to the first bearing and is adapted to rotate through the first bearing. The second rotor is fixedly connected to the second bearing and is adapted to rotate through the second bearing;

[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 first rotor is arranged between the first load and the stator;

[0009] and / or, the second rotor is arranged between the second load and the stator.

[0010] In some embodiments of this application, the housing is provided with a first concave cavity, the stator surrounds the first concave cavity, and at least part of the first bearing is embedded in the first concave cavity;

[0011] and / or, the housing is provided with a second concave cavity, the stator surrounds the second concave cavity, and at least part of the second bearing is embedded in the second concave cavity.

[0012] In some embodiments of this application, the first rotor includes a first support plate and a first permanent magnet arranged on the first support plate, and the first bearing is fixedly connected to the first support plate;

[0013] And / or, the second rotor includes a second support plate and a second permanent magnet disposed on the second support plate, and the second bearing is fixedly connected to the second support plate.

[0014] In some embodiments of the present application, the first permanent magnet of the first rotor is disposed on one side of the first support plate facing the stator;

[0015] And / or, the second permanent magnet of the second rotor is disposed on one side of the second support plate facing the stator.

[0016] In some embodiments of the present application, the first support plate and the first permanent magnet of the first rotor are injection-molded and connected;

[0017] And / or, the first support plate of the first rotor and the first bearing are injection-molded and connected;

[0018] And / or, the second support plate and the second permanent magnet of the second rotor are injection-molded and connected;

[0019] And / or, the second support plate of the second rotor and the second bearing are injection-molded and connected.

[0020] In some embodiments of the present application, one of the first rotor and the first load is provided with a first convex portion and the other is provided with a first concave portion, and the first convex portion is inserted into the first concave portion so that the first rotor is adapted to drive the first load to rotate coaxially;

[0021] And / or, one of the second rotor and the second load is provided with a second convex portion and the other is provided with a second concave portion, and the second convex portion is inserted into the second concave portion so that the second rotor is adapted to drive the second load to rotate coaxially.

[0022] In some embodiments of the present application, the axial flux motor includes a shaft body, the shaft body is supported by the housing and passes through the first bearing and the second bearing, the first load is connected to the first rotor, and the second load is connected to the second rotor.

[0023] In some embodiments of the present application, the housing and the shaft body are injection-molded and connected.

[0024] In some embodiments of the present application, the first load is adapted to drive a fluid to flow;

[0025] And / or, the second load is adapted to drive a fluid to flow.

[0026] In some embodiments of the present application, the first load is an impeller;

[0027] And / or, the second load is an impeller.

[0028] In some embodiments of the present application, the first load is a centrifugal impeller;

[0029] and / or, the second load is a centrifugal impeller.

[0030] A second aspect of the present application discloses a household appliance, and the household appliance includes the above-mentioned driving device.

[0031] Other advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order 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.

[0033] Figure 1 Schematic diagram of the driving device in some embodiments;

[0034] Figure 2 Exploded view of the driving device in some embodiments;

[0035] Figure 3 Cross-sectional view of the driving device in some embodiments;

[0036] Figure 4 Schematic diagram of the combination of the housing, stator and shaft body in some embodiments;

[0037] Figure 5 Schematic diagram of the combination of the housing, stator and shaft body in some embodiments (different perspective from Figure 4 );

[0038] Figure 6 Schematic diagram of the combination of the first rotor and the first bearing in some embodiments;

[0039] Figure 7 Schematic diagram of the combination of the first rotor and the first bearing in some embodiments (different perspective from Figure 6 );

[0040] Figure 8 Schematic diagram of the first load in some embodiments;

[0041] Figure 9 Schematic diagram of the first load in some embodiments (different perspective from Figure 8 );

[0042] Figure 10Schematic diagram of the combination of the second rotor and the second bearing in some embodiments;

[0043] Figure 11 Schematic diagram of the combination of the second rotor and the second bearing in some embodiments (viewpoint is different from Figure 10 );

[0044] Figure 12 Schematic diagram of the second load in some embodiments;

[0045] Figure 13 Schematic diagram of the second load in some embodiments (viewpoint is different from Figure 12 ).

[0046] Explanation of the reference numerals in the drawings:

[0047] Drive device 100, axial flux motor 1000, first rotor 1100, first permanent magnet 1110, first support plate 1120, first convex part 1121, second rotor 1200, second permanent magnet 1210, second support plate 1220, second convex part 1221, stator 1300, housing 1400, first concave cavity 1410, second concave cavity 1420, first bearing 1510, second bearing 1520, shaft body 1600, first load 2100, first concave part 2110, second load 2200, second concave part 2210.

[0048] The realization of the purpose, functional characteristics and advantages of this application will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0049] Next, the technical solutions in the embodiments of this application will be clearly and completely described with reference to 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 protection scope of this application.

[0050] It should be noted that all the 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 accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0051] In this application, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" 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 circumstances.

[0052] In addition, in this application, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed 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 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.

[0053] A first aspect of this application proposes a driving device 100, as shown in combination with Figures 1 to 3 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.

[0054] The axial flux motor 1000 is different from the radial flux motor. The flux lines of the axial flux motor 1000 mainly extend along the axial direction, where the axial direction refers to the extension direction of the shaft body 1600 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 a setting, the number of motors is reduced, which is beneficial to reducing the space occupation and cost.

[0055] Specifically, the so-called first rotor 1100 and second rotor 1200, which are the rotatable parts 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, such that the stator 1300 is located between the first rotor 1100 and the second rotor 1200.

[0056] 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 connected to the stator 1300 synchronously during the molding process, such 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, because 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 arranged on the iron core. When the stator 1300 is powered on, the windings are powered on, such 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 wiring terminals of the controller are connected to the junction box, thereby realizing power supply and / or communication.

[0057] The main functions of the first bearing 1510 and the second bearing 1520 are to support the mechanical rotating body and reduce the friction coefficient during the movement process. There are various types of the first bearing 1510 and the second bearing 1520, which can be selected according to the actual situation. For example, both the first bearing 1510 and the second bearing 1520 are graphite bearings. Combined Figure 3 、 Figure 6 、 Figure 7 、 Figure 10 and Figure 11As shown, the first bearing 1510 is fixedly connected to the first rotor 1100, so that the first bearing 1510 and the first rotor 1100 are combined together. The second bearing 1520 is fixedly connected to the second rotor 1200, so that the second bearing 1520 and the second rotor 1200 are combined together. The first rotor 1100 can rotate through the first bearing 1510, and the second rotor 1200 can rotate through the second bearing 1520. In this way, the rotational frictional resistance on the first rotor 1100 and the second rotor 1200 can be reduced.

[0058] Generally speaking, the first rotor 1100 and the second rotor 1200 need to be supported by the shaft body 1600. Specifically, the shaft body 1600 is supported on the housing 1400 and passes through the first bearing 1510 and the second bearing 1520, so as to realize the support for the first rotor 1100 and the second rotor 1200. As Figures 1 to 5 shown, the shaft body 1600 passes through the housing 1400 and the stator 1300 and is fixedly connected to the housing 1400 to be supported on the housing 1400. The combination of the first bearing 1510 and the first rotor 1100 is assembled onto the shaft body 1600 (on the axial side of the stator 1300), and the combination of the second bearing 1520 and the second rotor 1200 is assembled onto the shaft body 1600 (on the other axial side of the stator 1300), which is convenient and fast. When the stator 1300 is powered on, the first rotor 1100 and the second rotor 1200 can be rotated. At this time, the first rotor 1100 and the second rotor 1200 do not need to drive the shaft body 1600 to rotate, realizing the reduction of the load on the first rotor 1100 and the second rotor 1200.

[0059] One axial side of the axial flux motor 1000 mainly forms output through the first rotor 1100, and the other axial side of the axial flux motor 1000 mainly forms output through the second rotor 1200. When powered on, the stator 1300 can interact with the first rotor 1100 and the second rotor 1200, thereby driving the first rotor 1100 and the second rotor 1200 to rotate. The first rotor 1100 drives the first load 2100 to rotate, and the second rotor 1200 drives the second load 2200 to rotate. Since the stator 1300 is located between the first rotor 1100 and the second rotor 1200, and the first rotor 1100 drives the first load 2100 to rotate, and the second rotor 1200 drives the second load 2200 to rotate, the first load 2100 is set on one axial side of the stator 1300, and the second load 2200 is set on the other axial side of the stator 1300. By distributing the first load 2100 and the second load 2200 on both axial sides of the stator 1300, the eccentric wear of the shaft system of the axial flux motor 1000 can be reduced or even avoided, and the operation of the axial flux motor 1000 can be made more stable. It can be understood that the so-called first load 2100 is a component driven by the axial flux motor 1000 to generate movement. The first load 2100 can be the final target object, or it can be a transmission component between the final target object and the axial flux motor 1000. Similarly, the second load 2200 is also the same, and no further description will be given.

[0060] In order to prevent the axial flux motor 1000 from interfering with the coordination between the first load 2100 and other components as much as possible, Figures 1 to 3 As shown, in some embodiments, the first rotor 1100 is disposed between the first load 2100 and the stator 1300. By disposing the first load 2100 between the first rotor 1100 and the stator 1300 in this way, the efficiency of the axial flux motor 1000 can be improved. Similarly, the second rotor 1200 is disposed between the second load 2200 and the stator 1300.

[0061] Combination Figures 1 to 5As shown, in some embodiments, the housing 1400 is provided with a first concave cavity 1410. For example, the first concave cavity 1410 is provided on the side of the housing 1400 facing the first rotor 1100, and the stator 1300 surrounds the first concave cavity 1410, and at least part of the first bearing 1510 is embedded in the first concave cavity 1410. Specifically, the stator 1300 has an annular structure, so that a certain space is surrounded by the stator 1300. Since the housing 1400 and the stator 1300 are injection-molded and connected, when the first concave cavity 1410 is provided on the side of the housing 1400 facing the first rotor 1100, the first concave cavity 1410 can occupy at least part of the space surrounded by the stator 1300, and at least part of the first bearing 1510 is embedded into the first concave cavity 1410. In this way, the axial space occupied by the driving device 100 is further reduced, which is more conducive to miniaturization.

[0062] Similarly, the housing 1400 is provided with a second concave cavity 1420. For example, the second concave cavity 1420 is provided on the side of the housing 1400 facing the second rotor 1200, and the stator 1300 surrounds the second concave cavity 1420, and at least part of the second bearing 1520 is embedded in the second concave cavity 1420. Specifically, the stator 1300 has an annular structure, so that a certain space is surrounded by the stator 1300. Since the housing 1400 and the stator 1300 are injection-molded and connected, when the second concave cavity 1420 is provided on the side of the housing 1400 facing the second rotor 1200, the second concave cavity 1420 can occupy at least part of the space surrounded by the stator 1300, and at least part of the second bearing 1520 is embedded into the second concave cavity 1420. In this way, the axial space occupied by the driving device 100 is further reduced, which is more conducive to miniaturization.

[0063] Figures 1 to 3 and Figures 6 to 7As shown, in some embodiments, the first rotor 1100 includes a first support plate 1120 and a first permanent magnet 1110. The first permanent magnet 1110 is disposed on the first support plate 1120, that is, the first permanent magnet 1110 is fixed to the first support plate 1120. The first support plate 1120 is a framework structure for supporting the first permanent magnet 1110, and there are various structural shapes, which are not limited herein. 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 are not limited herein. On this basis, the first bearing 1510 is designed to be fixedly connected to the first support plate 1120, and the first support plate 1120 also serves as the framework structure of the first bearing 1510, so that the first support plate 1120 synchronously supports the first permanent magnet 1110 and the first bearing 1510. Since the first permanent magnet 1110 needs to interact with the magnetic field formed by the stator 1300, setting the first permanent magnet 1110 on the side of the first support plate 1120 facing the stator 1300 is beneficial to improving the efficiency of the axial flux motor 1000 compared with setting the first permanent magnet 1110 on the side of the first support plate 1120 facing away from the stator 1300.

[0064] The first support plate 1120 and the first permanent magnet 1110 are injection-molded and connected, that is, at least part of the first support plate 1120 is injection-molded and 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 support plate 1120. By setting it like this, the first support plate 1120 and the first permanent magnet 1110 are tightly combined, improving the structural stability and durability, reducing the number of components, and being able to eliminate / reduce subsequent assembly processes, thereby improving production efficiency.

[0065] Similarly, the first support plate 1120 and the first bearing 1510 are injection-molded and connected, that is, at least part of the first support plate 1120 is injection-molded and synchronously connected to the first bearing 1510 during the molding process, so that the first bearing 1510 is embedded in at least part of the first support plate 1120. By setting it like this, the first support plate 1120 and the first bearing 1510 are tightly combined, improving the structural stability and durability, reducing the number of components, and being able to eliminate / reduce subsequent assembly processes, thereby improving production efficiency.

[0066] For example, the first permanent magnet 1110 and the first bearing 1510 are placed into a mold, and plastic is injected into the mold. After the plastic is molded, it forms the first support plate 1120, and the first support plate 1120 is combined with the first permanent magnet 1110 and the first bearing 1510. Through the injection molding connection of the first support plate 1120, the first permanent magnet 1110, and the first bearing 1510, the first support plate 1120 and the first permanent magnet 1110, the first bearing 1510 are tightly combined into one body, reducing the number of parts, improving the structural stability and durability, and can eliminate / reduce subsequent assembly processes, thereby improving production efficiency.

[0067] Figures 1 to 3 and Figures 10 to 11 As shown, in some embodiments, the second rotor 1200 includes a second support plate 1220 and a second permanent magnet 1210. The second permanent magnet 1210 is disposed on the second support plate 1220, that is, the second permanent magnet 1210 is fixed to the second support plate 1220. The second support plate 1220 is a frame structure for supporting the second permanent magnet 1210, and there are various structural shapes, which are not limited herein. The material of the second permanent magnet 1210 can be rare earth permanent magnet material, ferrite permanent magnet material, alnico alloy, iron chromium cobalt alloy, etc., which are not limited herein. On this basis, the second bearing 1520 is designed to be connected and fixed to the second support plate 1220. The second support plate 1220 also serves as the frame structure of the second bearing 1520, so that the second support plate 1220 simultaneously supports the second permanent magnet 1210 and the second bearing 1520. Since the second permanent magnet 1210 needs to interact with the magnetic field formed by the stator 1300, disposing the second permanent magnet 1210 on the side of the second support plate 1220 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 support plate 1220 facing away from the stator 1300.

[0068] The second support plate 1220 and the second permanent magnet 1210 are injection molded and connected, that is, at least part of the second support plate 1220 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 support plate 1220. By such an arrangement, the second support plate 1220 and the second permanent magnet 1210 are tightly combined, improving the structural stability and durability, reducing the number of components, and can eliminate / reduce subsequent assembly processes, thereby improving production efficiency.

[0069] Similarly, the second support plate 1220 is injection-molded and connected to the second bearing 1520, that is, at least a part of the second support plate 1220 is injection-molded, and is synchronously connected to the second bearing 1520 during the molding process, so that the second bearing 1520 is embedded in at least a part of the second support plate 1220. By such an arrangement, the second support plate 1220 and the second bearing 1520 are tightly combined, improving the structural stability and durability, reducing the number of components, and being able to eliminate / reduce subsequent assembly processes, thereby improving production efficiency.

[0070] For example, the second permanent magnet 1210 and the second bearing 1520 are placed in a mold, and plastic is injected into the mold. After the plastic is molded, it forms the second support plate 1220, and the second support plate 1220 is combined with the second permanent magnet 1210 and the second bearing 1520. Through the injection-molding connection of the second support plate 1220, the second permanent magnet 1210, and the second bearing 1520, the second support plate 1220, the second permanent magnet 1210, and the second bearing 1520 are tightly combined into one body, reducing the number of parts, improving the structural stability and durability, and being able to eliminate / reduce subsequent assembly processes, thereby improving production efficiency.

[0071] Combined Figure 2 、 Figure 3 、 Figures 6 to 13 As shown in

[0072] Similarly, one of the second rotor 1200 and the second load 2200 is provided with a second convex portion 1221, and the other of the second rotor 1200 and the second load 2200 is provided with a second concave portion 2210. The second convex portion 1221 is inserted into the second concave portion 2210 to realize the connection between the second rotor 1200 and the second load 2200, and the second rotor 1200 drives the second load 2200 to rotate coaxially. For example, the second convex portion 1221 is provided on the second rotor 1200, and the second concave portion 2210 is provided on the second load 2200. A plurality of second convex portions 1221 surround the rotation axis of the second rotor 1200, and the second concave portions 2210 and the second convex portions 1221 correspond one by one. When the second rotor 1200 rotates, the second convex portion 1221 abuts against the second concave portion 2210 in the rotation direction, so as to drive the second load 2200 to rotate coaxially.

[0073] Combined Figures 1 to 5 As shown in the figure, in some embodiments, the shaft body 1600 is supported by the housing 1400 and passes through the first bearing 1510 and the second bearing 1520. The first load 2100 is connected to the first rotor 1100, and the second load 2200 is connected to the second rotor 1200. The shaft body 1600 passes through the first bearing 1510 and the second bearing 1520. Since the first bearing 1510 is fixedly connected to the first rotor 1100 and the second bearing 1520 is fixedly connected to the second rotor 1200, the support for the first rotor 1100 and the second rotor 1200 can be realized in this way. The first rotor 1100 can rotate around the shaft body 1600 through the first bearing 1510, and the second rotor 1200 can rotate around the shaft body 1600 through the second bearing 1520. In this embodiment, the first rotor 1100 is connected to the first load 2100, and the first rotor 1100 can transmit force to the first load 2100, so that the first load 2100 can be driven to rotate when the first rotor 1100 rotates. Similarly, the second rotor 1200 is connected to the second load 2200, and the second rotor 1200 can transmit force to the second load 2200, so that the second load 2200 can be driven to rotate when the second rotor 1200 rotates.

[0074] For example, the first load 2100 is sleeved on the shaft body 1600 and connected to the first rotor 1100. The connection can be realized by adopting the cooperation form of the first concave portion 2110 and the first convex portion 1121 in the above text. In this way, the first rotor 1100 can drive the first load 2100 to rotate coaxially when it rotates. The second load 2200 is sleeved on the shaft body 1600 and connected to the second rotor 1200. The connection can be realized by adopting the cooperation form of the second concave portion 2210 and the second convex portion 1221 in the above text. In this way, the second rotor 1200 can drive the second load 2200 to rotate coaxially when it rotates.

[0075] Further, the housing 1400 is injection-molded and connected to the shaft body 1600. Specifically, the shaft body 1600 is supported by the housing 1400 in various ways. For example, the shaft body 1600 and the housing 1400 are connected and fixed by interference fit, screw fastening, etc. In this embodiment, the housing 1400 and the shaft body 1600 are injection-molded and connected to achieve connection and fixation, further reducing the number of components. 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 shaft body 1600, enhancing the bonding force between the housing 1400, the stator 1300, and the shaft body 1600, improving the structural stability and durability, and further improving the production efficiency. For example, the stator 1300 and the shaft body 1600 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 shaft body 1600.

[0076] Combined Figures 1 to 3 As shown in the figure, in some embodiments, the first load 2100 is used to drive the fluid to flow, that is, the axial flux motor 1000 drives the first load 2100 to rotate, thereby driving the fluid to flow. The flow of the fluid mainly occurs along the flow channel. The flow channel can be bent or straight, so as to facilitate the cooperation of the flow channel, the first load 2100, and the axial flux motor 1000. Similarly, the second load 2200 is used to drive the fluid to flow, that is, the axial flux motor 1000 drives the second load 2200 to rotate, thereby driving the fluid to flow. The flow of the fluid mainly occurs along the flow channel. The flow channel can be bent or straight, so as to facilitate the cooperation of the flow channel, the second load 2200, and the axial flux motor 1000. 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. The rotation of the impeller drives the fluid to flow. It can be understood that the fluid includes but is not limited to gases and liquids. The sizes / structures of the first load 2100 and the second load 2200 can be the same or different.

[0077] 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 the substantially radial direction. In this way, when the first load 2100 is designed to be coaxially arranged 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 the substantially radial direction. In this way, when the second load 2200 is designed to be coaxially arranged 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.

[0078] A 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, which has two rotatable brush heads. One brush head 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.

[0079] 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, so as to realize the support of the axial flux motor 1000. At the same time, the housing 1400 can also realize the wrapping and protection of 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 molding 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 wiring terminals of the controller are connected to the junction box, so as to realize power supply and / or communication.

[0080] The main functions of the first bearing 1510 and the second bearing 1520 are to support the mechanical rotating body and reduce the friction coefficient during the movement. There are various types of the first bearing 1510 and the second bearing 1520, which can be selected according to the actual situation. For example, both the first bearing 1510 and the second bearing 1520 are graphite bearings. The first bearing 1510 is fixedly connected to the first rotor 1100, so that the first bearing 1510 and the first rotor 1100 are combined together. The second bearing 1520 is fixedly connected to the second rotor 1200, so that the second bearing 1520 and the second rotor 1200 are combined together. The first rotor 1100 can rotate through the first bearing 1510, and the second rotor 1200 can rotate through the second bearing 1520, so as to reduce the rotational friction resistance received by the first rotor 1100 and the second rotor 1200.

[0081] On the 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 energized, it can interact with the first rotor 1100 and the second rotor 1200, thereby driving the first rotor 1100 and the second rotor 1200 to rotate. The first rotor 1100 drives the first load 2100 to rotate, and the second rotor 1200 drives the second load 2200 to rotate. Since the stator 1300 is located between the first rotor 1100 and the second rotor 1200, and the first rotor 1100 drives the first load 2100 to rotate, and the second rotor 1200 drives the second load 2200 to rotate, the first load 2100 is arranged on one axial side of the stator 1300, and the second load 2200 is arranged on the other axial side of the stator 1300. By distributing the first load 2100 and the second load 2200 on both axial sides of the stator 1300, the eccentric wear of the shafting of the axial flux motor 1000 can be reduced or even avoided, and the operation of the axial flux motor 1000 can be made more 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 perform 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.

[0082] 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.

[0083] 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 bearing (1510) and a second bearing (1520), 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) and the first bearing (1510) being fixedly connected so as to be adapted to rotate through the first bearing (1510), and the second rotor (1200) and the second bearing (1520) being fixedly connected so as to be adapted to rotate through the second bearing (1520); 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 first rotor (1100) is disposed between the first load (2100) and the stator (1300); And / or, the second rotor (1200) is disposed between the second load (2200) and the stator (1300).

3. The drive device (100) according to claim 2, characterized in that, The housing (1400) is provided with a first concave cavity (1410) thereon, the stator (1300) surrounds the first concave cavity (1410), and at least a part of the first bearing (1510) is embedded in the first concave cavity (1410); And / or, the housing (1400) is provided with a second concave cavity (1420), the stator (1300) surrounds the second concave cavity (1420), and at least a part of the second bearing (1520) is embedded in the second concave cavity (1420).

4. The drive device (100) according to claim 1, characterized in that, The first rotor (1100) includes a first support plate (1120) and a first permanent magnet (1110) disposed on the first support plate (1120), and the first bearing (1510) and the first support plate (1120) are fixedly connected; And / or, the second rotor (1200) includes a second support plate (1220) and a second permanent magnet (1210) disposed on the second support plate (1220), and the second bearing (1520) and the second support plate (1220) are fixedly connected.

5. The drive device (100) according to claim 4, characterized in that, The first permanent magnet (1110) of the first rotor (1100) is disposed on one side of the first support plate (1120) facing the stator (1300); And / or, the second permanent magnet (1210) of the second rotor (1200) is disposed on one side of the second support plate (1220) facing the stator (1300).

6. The drive device (100) according to claim 4, characterized in that, The first support plate (1120) and the first permanent magnet (1110) of the first rotor (1100) are injection-molded and connected; And / or, the first support plate (1120) of the first rotor (1100) and the first bearing (1510) are injection-molded and connected; And / or, the second support plate (1220) of the second rotor (1200) and the second permanent magnet (1210) are injection-molded and connected; And / or, the second support plate (1220) of the second rotor (1200) and the second bearing (1520) are injection-molded and connected.

7. The drive device (100) according to claim 1, characterized in that, One of the first rotor (1100) and the first load (2100) is provided with a first convex portion (1121) and the other is provided with a first concave portion (2110), and the first convex portion (1121) is inserted into the first concave portion (2110) so that the first rotor (1100) is adapted to drive the first load (2100) to rotate coaxially; And / or, one of the second rotor (1200) and the second load (2200) is provided with a second convex portion (1221) and the other is provided with a second concave portion (2210), and the second convex portion (1221) is inserted into the second concave portion (2210) so that the second rotor (1200) is adapted to drive the second load (2200) to rotate coaxially.

8. The drive device (100) according to claim 1, characterized in that, The axial flux motor (1000) includes a shaft body (1600), the shaft body (1600) is supported by the housing (1400) and passes through the first bearing (1510) and the second bearing (1520), the first load (2100) is connected to the first rotor (1100), and the second load (2200) is connected to the second rotor (1200).

9. The drive device (100) according to claim 8, characterized in that, The housing (1400) and the shaft body (1600) are injection-molded and connected.

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 an impeller; And / or, the second load (2200) is an impeller.

12. 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.

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

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