Washing machine in which motor rotor is integrated into inner tub

Abstract

The present invention relates to the technical field of washing machines. Disclosed is a washing machine in which a motor rotor is integrated into an inner tub. The washing machine comprises an outer tub, an inner tub, and a drive motor, wherein a rotating shaft is coaxially arranged at an end portion of the inner tub, at least one bearing is sleeved on the rotating shaft, and the bearing is arranged on the outer tub; the drive motor comprises a stator assembly and a rotor assembly; the stator assembly is mounted on the outer tub, the rotor assembly is coaxially arranged on the rotating shaft or coaxially arranged at the end portion of the inner tub, and the rotor assembly is coaxially sleeved on the outer side of the stator assembly or coaxially inserted into the inner side of the stator assembly. According to the present invention, the stator assembly and the rotor assembly are arranged close to a first bearing and a second bearing or between the first bearing and the second bearing, so that the stability of the stator assembly and the rotor assembly during operation is improved, the vibration noise of a rotating component is reduced, and vibration and noise generated during operation of the washing machine are reduced.

Description

A washing machine with the motor rotor integrated into the inner drum. Technical Field

[0001] This invention relates to the field of washing machine technology, and more specifically to a washing machine in which the motor rotor is integrated into the inner drum. Background Technology

[0002] In existing direct-drive washing machines, the motor is directly connected to the drum, eliminating belts and pulleys and improving energy efficiency.

[0003] However, the aforementioned direct-drive motor washing machines still have the following drawbacks:

[0004] (1) Installation difficulties: The stator and rotor are both independent components. The stator is fixed to the outer casing with screws and locating pins, and the rotor is fixed to the rotating shaft through the rotor casing. The installation position of the direct drive motor is usually quite limited, and the position of the motor needs to be fully considered during the design phase. This may increase the complexity of the overall design of the washing machine, and may also limit the use of the washing machine in certain spaces or scenarios;

[0005] (2) Large size: The direct drive motor is currently installed on the outside of the washing machine, and the shaft size is relatively long, resulting in a large thickness dimension of the washing machine, so it is difficult to control the overall size of the washing machine;

[0006] (3) Complex production process: Currently, the direct drive motor is assembled by first assembling the inner and outer barrels, and then assembling the stator and rotor of the direct drive motor. As an independent component, the direct drive motor needs to be fixed and assembled separately with screws or pins, etc., which makes the production process relatively complex.

[0007] (4) Poor assembly accuracy: Because the stator and rotor of the motor must ensure that their air gap is uniform, the stator and rotor must ensure that their shafts are concentric with the inner cylinder tripod. Currently, the stator is independently injection molded and the rotor support is sheet metal molded. The dimensional accuracy is difficult to control, which can easily lead to inaccurate positioning and uneven air gap, thereby causing vibration and noise.

[0008] Summary of the Invention

[0009] In order to overcome the above-mentioned technical problems, the purpose of this invention is to provide a washing machine with the motor rotor integrated into the inner drum, so as to solve the problem of vibration and noise that existing washing machines are prone to generate during operation as mentioned in the background art.

[0010] The objective of this invention can be achieved through the following technical solutions:

[0011] A washing machine with a motor rotor integrated in an inner drum includes an outer drum, an inner drum, and a drive motor. A rotating shaft is coaxially arranged at the end of the inner drum, and at least one bearing is sleeved on the rotating shaft. The bearing is disposed in the outer drum.

[0012] The drive motor includes a stator assembly and a rotor assembly; the stator assembly is mounted on the outer cylinder, and the rotor assembly is coaxially disposed on the shaft or coaxially disposed at the end of the inner cylinder, and the rotor assembly is coaxially sleeved on the outside of the stator assembly or coaxially inserted into the inside of the stator assembly.

[0013] When there is only one bearing, the radial projection of the stator assembly along the shaft of rotation partially overlaps or completely overlaps with the radial projection of the bearing along the shaft of rotation.

[0014] When the number of bearings is greater than one, the radial projection of the stator assembly along the shaft partially overlaps or completely overlaps with the radial projection of one of the bearings along the shaft, or the radial projection of the stator assembly along the shaft lies between the radial projections of the two outermost bearings along the shaft.

[0015] Preferably, an inner cylinder support is provided between the rotating shaft and the inner cylinder, the rotating shaft is located at the center of the inner cylinder support, and the inner cylinder support is connected to the rotor assembly.

[0016] Preferably, the inner cylinder has an inwardly recessed portion at the center of its end or at the position corresponding to the inner cylinder support, and the inner cylinder support is adapted to the inwardly recessed portion.

[0017] Preferably, the inner cylinder support consists of at least two rod-shaped structures arranged radially along the axis of rotation, and each rod-shaped structure is arranged at equal intervals along the circumferential direction of the axis of rotation.

[0018] Preferably, the rod-shaped structure has a hollowed-out portion.

[0019] Preferably, the inner cylinder support is provided with a first bayonet, which is adapted to the rotor assembly.

[0020] Preferably, the inner cylinder support is provided with a second latch; the second latch is adapted to the end edge of the inner cylinder.

[0021] Preferably, the stator assembly is disposed inside the outer cylinder.

[0022] Preferably, the stator assembly is integrally formed on the outer cylinder.

[0023] Preferably, there are two bearings, namely a first bearing and a second bearing, which are spaced apart along the axial direction of the shaft.

[0024] Preferably, the stator assembly includes a stator winding and a stator core; the stator core is disposed inside the outer cylinder, and the stator winding is disposed within the stator core; and the stator core is sleeved on the outer cylinder insert.

[0025] Preferably, the rotor assembly includes a rotor housing, a rotor permanent magnet, a rotor yoke, and a rotor encapsulation component; the rotor housing is disposed on the inner cylinder support, and the first bayonet is adapted to the outer diameter of the rotor housing; the rotor permanent magnet is coaxially inserted into the rotor housing, the rotor yoke is coaxially inserted into the rotor permanent magnet, and the rotor encapsulation component is disposed on the rotor housing, the rotor encapsulation component being used to encapsulate the rotor housing, the rotor permanent magnet, and the rotor yoke.

[0026] Preferably, an outer cylinder insert is fitted onto the rotating shaft, and the outer cylinder insert is disposed inside the outer cylinder, and the outer rings of the bearings are all connected to the outer cylinder insert.

[0027] Preferably, the stator assembly is fitted onto the outer cylinder insert.

[0028] The beneficial effects of this invention are:

[0029] 1. By placing the stator assembly and rotor assembly close to the first and second bearings, the stability of the stator assembly and rotor assembly during operation is improved, and the vibration noise of the rotating parts is reduced, thereby reducing the vibration and noise generated during the operation of the washing machine; by installing the stator assembly and rotor assembly between the outer and inner drums inside the washing machine, the original structure of the washing machine is simplified by changing the installation method of the stator assembly and rotor assembly inside the washing machine, thereby improving space utilization, making the washing machine thinner, and reducing the size of the washing machine in the thickness direction;

[0030] 2. By setting up an inner drum support, the rotor assembly and the inner drum are rigidly connected. When the rotor assembly drives the inner drum to rotate, it can prevent the inner drum from deforming, thereby reducing vibration. Furthermore, by using the concave part in conjunction with the inner drum support, the space occupied by the inner drum support in the thickness of the washing machine can be reduced without reducing the utilization rate of the internal space of the inner drum. This further reduces the thickness of the washing machine, making the overall layout of the washing machine more reasonable and the space more compact.

[0031] 3. By integrally injection molding the stator assembly inside the outer drum and integrally injection molding the rotor assembly to the end of the inner drum, the process installation is simplified, production efficiency is improved, and production costs are reduced. It also improves the convenience of installation, ensures high concentricity of the installation of various components, thereby improving the stability of the washing machine and reducing vibration and noise.

[0032] 4. By placing the stator assembly and rotor assembly between the outer drum and the inner drum, water can flow into the stator assembly and rotor assembly through the gaps in the inner drum. The operating temperature of the stator assembly and rotor assembly can be absorbed by the water, thereby achieving heat absorption and cooling of the stator assembly and rotor assembly while heating the water in the washing machine, which can reduce the power consumption during normal heating washing.

[0033] 5. By setting up rod-shaped structures on the inner cylinder support and opening hollow sections, the material usage is reduced and production costs are lowered without changing the overall support effect;

[0034] 6. When the inner cylinder support is composed of multiple rod-shaped structures, the rotor assembly of the ring structure is installed on each rod-shaped structure, thereby forming a whole with each rod-shaped structure, which further increases the strength of the inner cylinder support.

[0035] 7. The second bayonet design ensures that the axis of the inner drum bracket and the inner drum are quickly aligned during installation, guaranteeing the concentricity of the inner drum bracket and the inner drum. This improves installation convenience and reduces vibration issues caused by concentricity deviation during washing machine operation. Attached Figure Description

[0036] The invention will now be further described with reference to the accompanying drawings.

[0037] Figure 1 is a three-dimensional magnified structural diagram of the overall partial cross-section of the present invention;

[0038] Figure 2 is a schematic diagram of the overall partial cross-sectional three-dimensional exploded and enlarged structure of the present invention;

[0039] Figure 3 is a partial side view enlarged cross-sectional schematic diagram of the present invention;

[0040] Figure 4 is a schematic diagram of the enlarged structure of region A in Figure 3 of this invention;

[0041] Figure 5 is a three-dimensional enlarged structural schematic diagram of the rotor assembly and inner cylinder support of the present invention.

[0042] In the diagram: 1. Outer cylinder; 2. Inner cylinder; 3. Shaft; 4. First bearing; 5. Second bearing; 6. Drive motor; 61. Stator assembly; 611. Stator winding; 612. Stator core; 62. Rotor assembly; 621. Rotor housing; 622. Rotor permanent magnet; 623. Rotor yoke; 624. Rotor encapsulation; 7. Outer cylinder insert; 8. Inner cylinder support; 9. Screw; 10. Recess; 11. First bayonet; 12. Second bayonet. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] As shown in Figures 1-5, a washing machine with a motor rotor integrated into the inner drum, as shown in Figures 1 and 3, includes an outer drum 1, an inner drum 2, and a drive motor 6. A rotating shaft 3 is coaxially disposed at the end of the inner drum 2, and at least one bearing is sleeved on the rotating shaft 3, with the bearing disposed on the outer drum 1. The drive motor 6 includes a stator assembly 61 and a rotor assembly 62. The stator assembly 61 is mounted on the outer drum 1, and the rotor assembly 62 is coaxially disposed on the rotating shaft 3 or coaxially disposed at the end of the inner drum 2, and the rotor assembly 62 is coaxially sleeved on the outer drum of the stator assembly 61. The bearing is inserted into the inner side of the stator assembly 61 either side or coaxially. When there is only one bearing, the radial projection of the stator assembly 61 along the shaft 3 partially overlaps or completely overlaps with the radial projection of the bearing along the shaft 3. When there is more than one bearing, the radial projection of the stator assembly 61 along the shaft 3 partially overlaps or completely overlaps with the radial projection of one of the bearings along the shaft 3, or the radial projection of the stator assembly 61 along the shaft 3 is between the radial projections of the two outermost bearings along the shaft 3 (when the radial projection along the shaft 3 is as shown in Figure 3, the distance between the bearing and the stator assembly 61 is observed when looking down from above). It can be understood that, for example, taking two bearings as an example, the area between the radial projections of the two outermost bearings along the shaft 3 is the area D shown in Figure 3.

[0045] It should be noted that the shaft 3 is best supported by the bearings when the stator assembly 61 and rotor assembly 62 are positioned close to the bearings or between at least two bearings. Therefore, when the stator assembly 61 and rotor assembly 62 are positioned close to the bearings, the rotation of the shaft 3 driven by the stator assembly 61 and rotor assembly 62 of the motor can be ensured to be stable, reducing the vibration and noise of the rotating parts, thereby reducing the vibration and noise generated when the washing machine is working.

[0046] By setting the rotor assembly 62 on the inner drum 2, the original structure of the washing machine is simplified by changing the installation method of the motor inside the washing machine, thereby improving space utilization and making the thickness of the washing machine (i.e., the axial dimension along the inner drum 2) thinner.

[0047] As shown in Figures 1 and 3, an inner cylinder support 8 is provided between the rotating shaft 3 and the inner cylinder 2. The rotating shaft 3 is located at the center of the inner cylinder support 8, and the inner cylinder support 8 is connected to the rotor assembly 62.

[0048] It should be noted that the inner cylinder support 8 provides a rigid connection between the rotor assembly 62 and the inner cylinder 2. When the rotor assembly 62 drives the inner cylinder 2 to rotate, it can prevent the inner cylinder 2 from deforming, thereby reducing vibration. When the rotor assembly 62 is directly installed with the inner cylinder 2, the outer diameter of the rotor assembly 62 is generally smaller than the diameter of the inner cylinder 2, resulting in a small contact area between the rotor assembly 62 and the inner cylinder 2. Therefore, when the rotor assembly 62 drives the inner cylinder 2 to rotate, it is easy for the inner cylinder 2 to deform, generating obvious vibration and noise. However, by setting the inner cylinder support 8, a rigid connection is formed between the rotor assembly 62 and the entire end of the inner cylinder 2, thereby reducing vibration and noise during movement.

[0049] As shown in Figures 1-2 and 5, the inner cylinder support 8 and the rotor assembly 62 are connected by screws 9 so that the inner cylinder support 8 and the rotor assembly 62 can be disassembled; the inner cylinder support 8 is provided with a first bayonet 11, which is adapted to the rotor assembly 62.

[0050] It should be noted that the first bayonet 11 ensures that the concentricity between the rotor assembly 62 and the shaft 3 is nearly identical when the rotor assembly 62 is installed with the inner cylinder bracket 8, thus preventing concentricity deviation during installation. Furthermore, the screws 9 form a detachable structure, allowing for the replacement of rotor assembly 62 structures with different outer diameters as needed to adapt to different motor models and improve versatility.

[0051] As shown in Figure 2-3, the inner cylinder 2 has an inward recessed part 10 at the center of its end or at the position corresponding to the inner cylinder support 8, and the inner cylinder support 8 is adapted to the inward recessed part 10.

[0052] It should be noted that the recessed part 10 makes the top of the inner drum 2 recessed inward. During washing, the inner drum 2 rotates and under the action of centrifugal force, it will cause the clothes to concentrate in all directions. Therefore, a certain amount of free space is left in the center of the inner drum 2. The recessed part 10 can reduce the space occupied by the inner drum support 8 in the thickness of the washing machine without reducing the utilization rate of the internal space of the inner drum 2, thereby further reducing the thickness of the washing machine and making the overall layout of the washing machine more reasonable and the space more compact.

[0053] As shown in Figures 2-3 and 5, the inner cylinder support 8 consists of at least two rod-shaped structures arranged radially along the rotation axis 3, and each rod-shaped structure is arranged at equal intervals along the circumferential direction of the rotation axis 3.

[0054] It should be noted that by setting the rod-shaped structure of the inner cylinder support 8, the material usage is reduced and the production cost is lowered without changing the overall support effect. Furthermore, by setting the concave part 10 that is compatible with the rod-shaped structure of the inner cylinder support 8, the space occupied by the inner cylinder support 8 is reduced without affecting the utilization rate of the internal space of the inner cylinder 2, while improving the stability of the connection between the inner cylinder support 8 and the inner cylinder 2. This allows the inner cylinder support 8 to drive the inner cylinder 2 to rotate stably under the constraint of the concave part 10 when subjected to torque.

[0055] Furthermore, when the rotor assembly 62 is annularly mounted on the inner cylinder support, and the rotor assembly 62 is detachably connected to multiple rod-like structures on the inner cylinder support, the rod-like structures will be supported by the rotor assembly 62 when the inner cylinder support is subjected to torque along the circumferential direction of the rotating shaft 3, further increasing the strength of the inner cylinder support.

[0056] As shown in Figure 5, the inner cylinder support 8 has a hollowed-out section on its rod-shaped structure. It is understood that this application does not limit the specific structure and installation method of the hollowed-out section. By setting the hollowed-out section, the material usage is further reduced and the production cost is lowered while the supporting strength of the inner cylinder support 8 remains unchanged.

[0057] As shown in Figures 2-3 and 5, a second latch 12 is provided on the inner cylinder support 8; the second latch 12 is adapted to the end edge of the inner cylinder 2.

[0058] It should be noted that the second bayonet 12 ensures that the axis of the rotating shaft 3 on the inner drum bracket 8 and the axis of the inner drum 2 are quickly aligned during the installation of the inner drum bracket 8 and the inner drum 2. This ensures the concentricity of the inner drum bracket 8 and the inner drum 2 during installation, improves installation convenience, and reduces the problem of vibration during washing machine use caused by concentricity deviation.

[0059] As shown in Figures 1-3, an outer cylinder insert 7 is fitted onto the rotating shaft 3 and inserted into the outer cylinder 1. There are two bearings, namely a first bearing 4 and a second bearing 5, which are spaced apart along the axial direction of the rotating shaft 3. The stator assembly 61 is located between the first bearing 4 and the second bearing 5. The outer rings of the first bearing 4 and the second bearing 5 are connected to the outer cylinder insert 7. The stator assembly 61 is fitted onto the outer cylinder insert 7. The stator assembly 61 and the outer cylinder 1 are integrally injection molded, and the stator assembly 61 is fitted onto the outer cylinder insert 7. The outer cylinder insert 7 is used to support the inner ring of the stator assembly 61.

[0060] It should be noted that by integrally injection molding the stator assembly 61 and the outer cylinder 1, the process of reassembling the stator assembly 61 in the later stage is reduced. At the same time, the positioning accuracy of the stator assembly 61 is very high, which ensures the concentricity accuracy of the stator assembly 61 and the inner cylinder support 8.

[0061] As shown in Figures 1-2, the stator assembly 61 is disposed inside the outer cylinder 1 and is coaxially sleeved on the rotating shaft 3; the stator assembly 61 includes a stator winding 611 and a stator core 612; the stator core 612 is disposed inside the outer cylinder 1 and the stator winding 611 is disposed on the stator core 612; and the stator core 612 is sleeved on the outer cylinder insert 7.

[0062] It should be noted that by integrally injection molding the stator assembly 61 and the outer cylinder 1, and by using the high-precision positioning of the outer cylinder insert 7, the stator assembly 61 and the outer cylinder insert 7 are kept highly concentric, thereby ensuring the high concentricity of the stator assembly 61 and the rotating shaft 3. Since the rotating shaft 3 and the rotor assembly 62 are concentrically set, the high concentricity of the stator assembly 61 and the rotor assembly 62 can be ensured, thereby ensuring the efficient and stable operation of the motor and reducing the generation of vibration during operation.

[0063] By integrally injection molding the stator assembly 61 into the interior of the outer drum 1, and integrally injection molding the rotor assembly 62 and connecting it to the end of the inner drum 2, when the motor drives the inner drum 2 to rotate, under the action of centrifugal force, water can flow into the stator assembly 61 and rotor assembly 62 through the gaps on the inner drum 2. The operating temperature of the stator assembly 61 and rotor assembly 62 can be absorbed by the water, achieving heat absorption and cooling of the stator assembly 61 and rotor assembly 62 while heating the water in the washing machine. This reduces the power consumption during normal heating washing. Furthermore, due to the integral injection molding structure of the stator assembly 61 and rotor assembly 62, the water will not affect the normal operation of the stator assembly 61 and rotor assembly 62, ensuring the service life of the stator assembly 61 and rotor assembly 62.

[0064] As shown in Figures 1-4, the rotor assembly 62 includes a rotor housing 621, a rotor permanent magnet 622, a rotor yoke 623, and a rotor encapsulation component 624. The rotor housing 621 is connected to the inner cylinder support 8 by screws 9, meaning that the rotor housing 621 and the multiple rod-shaped structures on the inner cylinder support 8 are detachably connected, and the first bayonet 11 is adapted to the outer diameter of the rotor housing 621. The rotor permanent magnet 622 is coaxially inserted into the rotor housing 621, the rotor yoke 623 is coaxially inserted into the rotor permanent magnet 622, and the rotor encapsulation component 624 is disposed on the rotor housing 621. The rotor encapsulation component 624 is used to encapsulate the rotor housing 621, the rotor permanent magnet 622, and the rotor yoke 623.

[0065] It should be noted that by using the rotor encapsulation component 624 to integrally injection mold the components inside the rotor assembly 62, and then using the first slot 11 opened on the inner cylinder support 8 for positioning, the rotor assembly 62 and the inner cylinder support 8 maintain a high degree of concentricity, thereby improving the stability of use and reducing working noise.

[0066] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0067] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0068] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A washing machine with a motor rotor integrated in the inner drum, comprising an outer drum (1), an inner drum (2), and a drive motor (6), characterized in that, The inner cylinder (2) is coaxially provided with a rotating shaft (3) at its end, and at least one bearing is sleeved on the rotating shaft (3), and the bearing is provided on the outer cylinder (1); The drive motor (6) includes a stator assembly (61) and a rotor assembly (62); the stator assembly (61) is mounted on the outer cylinder (1), and the rotor assembly (62) is coaxially disposed on the shaft (3) or coaxially disposed at the end of the inner cylinder (2), and the rotor assembly (62) is coaxially sleeved on the outside of the stator assembly (61) or coaxially inserted into the inside of the stator assembly (61); When there is only one bearing, the radial projection of the stator assembly (61) along the shaft (3) partially overlaps or completely overlaps with the radial projection of the bearing along the shaft (3). When the number of bearings is greater than one, the radial projection of the stator assembly (61) along the shaft (3) partially overlaps or completely overlaps with the radial projection of one of the bearings along the shaft (3), or the radial projection of the stator assembly (61) along the shaft (3) is between the radial projections of the two outermost bearings along the shaft (3).

2. A washing machine with a motor rotor integrated into the inner drum according to claim 1, characterized in that, An inner cylinder support (8) is provided between the rotating shaft (3) and the inner cylinder (2). The rotating shaft (3) is located at the center of the inner cylinder support (8). The inner cylinder support (8) is connected to the rotor assembly (62).

3. A washing machine with a motor rotor integrated into the inner drum according to claim 2, characterized in that, The inner cylinder (2) has an inward recess (10) at the center of its end or at the position of the inner cylinder (2) corresponding to the inner cylinder support (8), and the inner cylinder support (8) is adapted to the inward recess (10).

4. A washing machine with a motor rotor integrated in the inner drum according to claim 2, characterized in that, The inner cylinder support (8) consists of at least two rod-shaped structures arranged radially along the rotating shaft (3). Each rod-shaped structure is arranged at equal intervals along the circumferential direction of the rotating shaft (3). The rotor assembly (62) is detachably mounted on each of the rod-shaped structures.

5. A washing machine with a motor rotor integrated in the inner drum according to claim 4, characterized in that, The rod-shaped structure has a hollowed-out section.

6. A washing machine with a motor rotor integrated in the inner drum according to claim 2, characterized in that, The inner cylinder support (8) is provided with a first bayonet (11), which is adapted to the rotor assembly (62).

7. A washing machine with a motor rotor integrated into the inner drum according to claim 2, characterized in that, The inner cylinder support (8) is provided with a second slot (12); the second slot (12) is adapted to the end edge of the inner cylinder (2).

8. A washing machine with a motor rotor integrated in the inner drum according to claim 1, characterized in that, The stator assembly (61) is located inside the outer cylinder (1).

9. A washing machine with a motor rotor integrated in the inner drum according to claim 8, characterized in that, The stator assembly (61) is integrally formed on the outer cylinder (1).

10. A washing machine with a motor rotor integrated into the inner drum according to claim 1, characterized in that, There are two bearings, namely a first bearing (4) and a second bearing (5), which are spaced apart along the axial direction of the shaft (3).

11. A washing machine with a motor rotor integrated in the inner drum according to claim 1, characterized in that, The stator assembly (61) includes a stator winding (611) and a stator core (612); the stator core (612) is disposed inside the outer cylinder (1), and the stator winding (611) is disposed inside the stator core (612); and the stator core (612) is sleeved on the outer cylinder insert (7).

12. A washing machine with a motor rotor integrated in the inner drum according to claim 6, characterized in that, The rotor assembly (62) includes a rotor housing (621), a rotor permanent magnet (622), a rotor yoke (623), and a rotor encapsulation component (624). The rotor housing (621) is disposed on the inner cylinder support (8), and the first bayonet (11) is adapted to the outer diameter of the rotor housing (621). The rotor permanent magnet (622) is coaxially inserted into the rotor housing (621), and the rotor yoke (623) is coaxially inserted into the rotor permanent magnet (622). The rotor encapsulation component (624) is disposed on the rotor housing (621) and is used to encapsulate the rotor housing (621), the rotor permanent magnet (622), and the rotor yoke (623).

13. A washing machine with a motor rotor integrated in the inner drum according to any one of claims 1-12, characterized in that, The rotating shaft (3) is fitted with an outer cylinder insert (7), and the outer cylinder insert (7) is located inside the outer cylinder (1). The outer rings of the bearings are all connected to the outer cylinder insert (7).

14. A washing machine with a motor rotor integrated in the inner drum according to claim 13, characterized in that, The stator assembly (61) is fitted onto the outer cylinder insert (7).

Images