Washing machine and clothes washing method

Abstract

The present invention provides a washing machine and a method for washing clothes, belonging to the field of washing machines. The washing machine comprises an outer drum and an inner drum rotatably disposed within the outer drum, with the inner drum's axis offset from the outer drum's axis. The washing machine also comprises a drive assembly disposed at the bottom of the inner drum and configured to drive the inner drum to rotate and revolve. The inner drum of the washing machine of the present invention can rotate and revolve while washing clothes. That is, while the inner drum rotates, the inner drum itself can serve as a washing zone, and a washing zone can also be formed between the inner drum and the outer drum, thereby enabling washing different types of clothes in different zones.

Description

Technical Field

[0001] The present invention belongs to the field of washing machines, and in particular relates to a washing machine and a clothes washing method. Background Art

[0002] In recent years, the development of the washing machine industry has shown a diversified trend, and with the improvement of people's living standards, the zoned washing method has gradually developed into the core concept of washing machine product research and development. In order to adapt to consumers' growing demand for healthy washing, various companies have put the research and development of zoned washing machines on the agenda.

[0003] Currently available washing machines usually have only one washing drum, that is, only one washing area, and are unable to wash clothes of different types or materials in different areas.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a washing machine and a clothes washing method.

[0006] To solve the above technical problems, on the one hand, an embodiment of the present invention provides a washing machine, which includes an outer drum and an inner drum rotatably arranged in the outer drum, wherein the axis of the inner drum is offset from the axis of the outer drum;

[0007] The washing machine further comprises a driving assembly which is arranged at the bottom of the inner drum and is configured to simultaneously drive the inner drum to rotate and revolve.

[0008] In the above technical solution, one or more inner drums are provided, and a washing area is formed inside each inner drum and in the space enclosed by the outer walls of multiple inner drums and the inner wall of the outer drum. The driving component can simultaneously drive one or more inner drums to rotate synchronously.

[0009] In the above technical solution, when there are multiple inner cylinders, the distance between the centers of two adjacent inner cylinders is greater than the sum of the radii of the two inner cylinders.

[0010] In the above technical solution, the difference between the distance between the centers of two adjacent inner cylinders and the sum of the radii of the two inner cylinders is s, and 10cm≤s≤20cm.

[0011] In the above technical solution, the driving assembly includes a rotating part, a transmission part, a first matching part and a second matching part;

[0012] The transmission part has a first connection end connected to the rotating part and a second connection end connected to the first matching part;

[0013] The first connecting end and the second connecting end connect the rotating part and the first matching part to transmit the output power of the rotating part to the inner cylinder to drive the inner cylinder to revolve relative to the rotating part;

[0014] The second connecting end of the transmission part is also connected to the first matching part, and the second matching part is arranged at the bottom of the outer cylinder. When the transmission part drives the inner cylinder to revolve, the first matching part cooperates with the second matching part at the bottom of the outer cylinder to enable the inner cylinder to rotate while revolving.

[0015] In the above technical solution, the transmission part includes a first transmission frame arranged along the axial direction of the inner cylinder and at least one second transmission frame arranged along the radial direction of the inner cylinder;

[0016] The free end of the first transmission frame in the transmission part serves as the first connection end connected to the driving part, and the free end of the second transmission frame in the transmission part serves as the second connection end connected to the first matching part.

[0017] In the above technical solution, the first matching portion includes a transmission gear rotatably connected to the second connecting end of the second transmission frame, the transmission gear is fixedly connected to the center of the bottom of the inner cylinder, and the second matching portion includes an inner gear ring formed at the bottom of the outer cylinder;

[0018] The transmission gear is meshed with the internal gear ring and the number of teeth of the transmission gear is smaller than the number of teeth of the internal gear ring;

[0019] The rotating part includes a motor, the output shaft of the motor is arranged at the center of the inner gear ring, and the first connecting end of the first transmission frame is drivingly connected to the output shaft of the motor.

[0020] In the above technical solution, the inner gear ring is concentrically arranged with the outer cylinder.

[0021] In the above technical solution, a circular hole concentric with the outer cylinder is opened at the bottom of the outer cylinder, and the inner gear ring is formed on the inner wall surface of the circular hole.

[0022] In the above technical solution, the washing machine is a drum type washing machine. When the washing machine is a drum type washing machine, the motor is a variable frequency motor, which can adjust the motor speed according to the liquid resistance encountered when the inner drum rotates.

[0023] In the above technical solution, the washing machine is a pulsator washing machine.

[0024] On the other hand, an embodiment of the present invention also provides a clothing washing method, which is applied to the washing machine mentioned above. The washing method includes: obtaining the operating power of the motor in real time within a preset washing time, and adjusting the speed of the motor in real time according to the operating power of the motor.

[0025] In the above technical solution, the step of adjusting the motor speed according to the operating power of the motor includes:

[0026] Step S1: Determine whether the operating power of the motor is greater than or equal to a first preset power P1; if so, execute step S3; if not, execute step S2;

[0027] Step S2: The motor rotates at a constant speed of a first preset speed V1;

[0028] Step S3: Control the motor's speed to increase.

[0029] In the above technical solution, when the motor is rotated at a constant speed of the first preset speed V1 according to step S2, the operating power of the motor is obtained in real time, and it is determined whether the operating power of the motor is greater than or equal to the first preset power P1; if so, step S3 is executed.

[0030] When the motor speed is controlled to increase according to step S3, the operating power of the motor is obtained in real time, and it is determined whether the operating power of the motor is greater than or equal to the first preset power P1; if not, step S2 is executed.

[0031] In the above technical solution, within the preset washing time, steps S2 to S3 are repeatedly performed until the washing time ends.

[0032] In the above technical solution, in step S3 , the change in the motor speed is positively correlated with the difference between the motor operating power and the first preset power P1 .

[0033] In the above technical solution, the first preset power P1 is greater than or equal to the power under the first preset speed V1, and the first preset speed V1 is greater than or equal to the motor speed when the washing machine is unloaded.

[0034] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0035] 1. The inner drum of the washing machine in the embodiment of the present invention can rotate and revolve while washing clothes. That is, while the inner drum rotates, the inner drum itself can serve as a washing area, and a washing area can also be formed between the inner drum and the outer drum, so that different types of clothes can be washed in different areas.

[0036] 2. The washing machine of the present invention can wash clothes with different material properties at different washing speeds, thereby achieving better washing effects and improving the cleaning ratio.

[0037] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0039] Figure 1 This is a schematic diagram of the exploded structure of an embodiment of a washing machine of the present invention;

[0040] Figure 2 This is a schematic diagram of the assembly structure of a washing machine embodiment of the present invention;

[0041] Figure 3 is a schematic cross-sectional view of an embodiment of a washing machine of the present invention;

[0042] Figure 4 Schematic diagram of the top view of a washing machine embodiment of the present invention;

[0043] Figure 5 Schematic diagram of the top view of the structure when the transmission gear and the inner gear ring are meshed in the washing machine embodiment of the present invention;

[0044] Figure 6 Schematic diagram of the control process flow of the clothes washing method of the present invention;

[0045] Figure 1-6 Middle: 1-outer cylinder, 11-inner gear ring, 2-inner cylinder, 3-motor, 4-transmission part, 41-transmission frame, 411-first power transmission frame, 412-second power transmission frame, 42-transmission gear.

[0046] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0047] In the description of the present invention, it should be noted that the terms "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0048] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," "in contact," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0049] Existing washing machines typically have only one washing drum, or washing zone, making it impossible to wash different types of clothing in separate zones. The inner drum of the washing machine of the present invention can rotate and revolve while washing clothes. That is, as the inner drum rotates, it can function as a washing zone itself, and a washing zone can also be formed between the inner and outer drums, thereby enabling different types of clothing to be washed in separate zones.

[0050] To further illustrate the technical solution of the present invention, Figures 1-6 As shown, the following specific embodiments are provided.

[0051] Example 1

[0052] In an embodiment of the present invention, a Figure 1-Figure 5 The washing machine shown in the figure comprises an outer drum 1 and an inner drum 2 rotatably arranged in the outer drum 1, wherein the outer drum 1 is fixedly arranged and the axis of the inner drum 2 is offset from the axis of the outer drum 1;

[0053] Specifically, the washing machine further includes a driving assembly, wherein the driving assembly is disposed at the bottom of the inner drum 2 and is configured to drive the inner drum 2 to rotate and revolve.

[0054] like Figure 2 As shown, a washing area is formed inside the inner drum 2 of the washing machine, and a washing area is also formed between the inner drum 2 and the outer drum 1. For the convenience of description below, the washing area inside the inner drum 2 is referred to as the first washing area, and the washing area between the inner drum 2 and the outer drum 1 is referred to as the second washing area.

[0055] When placing laundry into the washing machine, the laundry can be separated by type and placed in the first washing area and the second washing area. For example, underwear can be placed in the first washing area and outerwear in the second washing area. When washing laundry, the washing machine is started, and the drive assembly drives the inner drum 2 to rotate and revolve. During the rotation of the inner drum 2, the laundry in the first washing area of ​​the inner drum 2 can be washed, and during the revolution of the inner drum 2, the laundry in the second washing area can be washed. In summary, the washing machine in the embodiment of the present invention can be divided into different washing areas by providing an inner drum 2 that can rotate and revolve simultaneously, thereby enabling the washing of laundry of different types or materials to be performed in different zones.

[0056] Specifically, such as Figures 1-4 As shown, there are one or more inner drums 2, and the space inside each inner drum 2 and the outer wall of the outer drum 1 encloses a washing area. The driving component can drive one or more inner drums 2 to rotate synchronously at the same time. Figure 2 As shown, in this embodiment, the number of inner drums 2 is set to two for illustration. Of course, in some alternative embodiments, the number of inner drums 2 can also be set to one, three, or four. Relatively speaking, preferably, in this embodiment, the washing effect is best when the number of inner drums 2 is set to two, taking into account the structure and usage of the washing machine.

[0057] It should be noted that the aforementioned driving assembly being able to drive the plurality of inner cylinders 2 to rotate synchronously means that the plurality of inner cylinders 2 can both rotate synchronously and revolve synchronously.

[0058] It should also be noted that when there are multiple inner cylinders 2 in the outer cylinder 1, the distance between the centers of two adjacent inner cylinders 2 is greater than the sum of the radii of the two inner cylinders 2, thereby ensuring that there is a certain gap between the two adjacent inner cylinders 2, thereby avoiding interference between the multiple inner cylinders 2 during synchronous rotation.

[0059] Specifically, the difference between the center distance of two adjacent inner drums 2 and the sum of their radii is s, where 10 cm ≤ s ≤ 20 cm. It is worth noting that if the difference between the center distance of two adjacent inner drums 2 and the sum of their radii is less than 10 cm, the distance between the two inner drums 2 is too small, and clothes can easily get stuck between the two inner drums 2 during washing, affecting their rotation. If the difference between the center distance of two adjacent inner drums 2 and the sum of their radii is greater than 20 cm, the distance between the two inner drums 2 is too large, affecting the frictional washing effect on clothes. Therefore, it is necessary to set the difference between the center distance of two adjacent inner drums 2 and the sum of their radii to between 10 cm and 20 cm. This ensures both the washing effect and the normal rotation of the inner drums 2, preventing them from getting stuck during rotation. Preferably, the difference between the center distance of two adjacent inner drums 2 and their diameter is set to 15 cm.

[0060] In order to better understand the principle of rotation and revolution of the inner cylinder 2, the above-mentioned drive components are described in detail below:

[0061] like Figure 1 and Figure 2 As shown, the driving assembly 4 includes a rotating part 41, a transmission part 42, a first matching part 43 and a second matching part 44, wherein the transmission part 42 has a first connecting end connected to the rotating part 41 and a second connecting end connected to the first matching part 43, and the first connecting end and the second connecting end connect the rotating part 41 and the first matching part 43 to transmit the output power of the rotating part 41 to the inner tube 2 to drive the inner tube 2 to revolve relative to the rotating part 41.

[0062] The second connecting end of the transmission part 42 is also connected to the first matching part 43, wherein the second matching part 44 is arranged at the bottom of the outer tube 1. When the transmission part 42 drives the inner tube 2 to revolve, the first matching part 43 also cooperates with the second matching part 44 at the bottom of the outer tube 1 to enable the inner tube 2 to rotate while revolving.

[0063] Specifically, such as Figure 1 and Figure 3 As shown, the transmission part 42 mentioned above includes a first transmission frame 421 arranged along the axial direction of the inner tube 2 and at least one second transmission frame 422 arranged along the radial direction of the inner tube 2, wherein the free end of the first transmission frame 421 in the transmission part 42 serves as the first connection end connected to the driving part 41, and the free end of the second transmission frame 422 in the transmission part 42 serves as the second connection end connected to the first matching portion 43.

[0064] When the washing machine is washing clothes, the rotating part 41 drives the inner drum 2 to revolve around the rotation center of the rotating part 41 through the second transmission frame 422 in the transmission part 42. While the inner drum 2 revolves around the rotating part 41, the first matching part 43 connected thereto also cooperates with the second matching part 44 to produce self-rotation, so that the inner drum 2 can not only rotate but also revolve when washing clothes, so that clothes in different washing areas can be washed at the same time.

[0065] It is worth noting that the number of the second transmission frames 422 mentioned above corresponds to the number of inner drums 2. That is, when there is one inner drum 2 in the outer drum 1, only one second transmission frame 422 is required, while when there are two inner drums 2 in the outer drum 1, two second transmission frames 422 are required. Similarly, in this embodiment, there is no specific limit on the number of second transmission frames 422 and inner drums 2. Relatively speaking, in this embodiment, the number of second transmission frames 422 and inner drums 2 is preferably set to two for illustration. In this embodiment, by setting the number of second transmission frames 422 and inner drums 2 to two, the production cost of the washing machine can be reduced while maintaining the zoned washing effect.

[0066] More specifically, Figure 1 As shown, the first matching portion 43 mentioned above includes a transmission gear rotatably connected to the second connecting end of the second transmission frame 422, and the transmission gear is fixedly connected to the bottom center of the inner tube 2. Specifically, the transmission gear is rotatably mounted on the second transmission frame 422 via a rotating shaft and a bearing.

[0067] The second matching portion 44 includes an inner gear ring formed at the bottom of the outer cylinder 1 and the inner gear ring is meshed with the transmission gear. Specifically, the number of teeth of the transmission gear is smaller than the number of teeth of the inner gear ring;

[0068] The rotating part 41 includes a motor, the output shaft of the motor is arranged at the center of the inner gear ring 11, and the first connecting end of the first transmission frame 421 is drivingly connected to the output shaft of the motor.

[0069] When washing clothes, the motor drives the second transmission frame 422 to revolve around the rotation axis of the motor through the first transmission frame 421 connected to it, and the second transmission frame 422 drives the transmission gear to revolve around the rotation axis of the motor. Since the transmission gear is fixedly connected to the inner drum 2, the transmission gear will drive the inner drum 2 to revolve around the rotation center of the motor. At the same time, while driving the inner drum 2 to revolve, the transmission gear is also engaged with the inner ring gear. Under the action of the inner ring gear, the transmission gear can revolve around the rotation axis of the motor while also rotating rapidly, thereby achieving zoned washing of clothes of different types or materials in different washing areas while improving the washing effect of the clothes in the inner drum 2.

[0070] Moreover, since the speeds of the inner drum 2 are different during rotation and revolution, based on this characteristic, when washing clothes, clothes with different characteristics can be placed in different washing areas according to the different speeds of rotation and revolution of the inner drum 2 (that is, they can be selectively placed in the inner drum 2 or between the inner drum 2 and the outer drum 1 according to the characteristics of the clothes), so that clothes with different characteristics can be washed at different washing speeds, thereby achieving better washing effects.

[0071] The specific structure of the transmission frame 41 is described in detail below;

[0072] Furthermore, the inner gear ring mentioned above is concentrically arranged with the outer drum 1. By concentrically arranging the inner gear ring and the outer drum 1, the distance between the inner drum 2 and the inner wall of the outer drum 1 can be kept the same at all times during the revolution, thereby making the inner drum 2 more stable during the revolution and reducing the shaking of the whole machine. Moreover, since the distance between the inner drum 2 and the outer drum 1 is kept the same at all times during the revolution, the washing effect of the clothes can be improved when washing clothes (if the distance between the inner drum 2 and the outer drum 1 changes in real time during the revolution, then if the distance between the two is too small, the clothes will be easily damaged. If the distance between the two is too large, the stains in the clothes cannot be washed away, and the washing effect is poor).

[0073] Furthermore, a circular hole concentric with the outer cylinder 1 is opened at the bottom of the outer cylinder 1, wherein the inner gear ring 11 is formed on the inner wall surface of the circular hole.

[0074] In any of the above embodiments, the washing machine mentioned above can be a drum washing machine or a pulsator washing machine. When the washing machine is a drum washing machine, the opening of the outer drum 1 in the washing machine faces forward. When the washing machine is a pulsator washing machine, the opening of the outer drum 1 in the washing machine faces upward.

[0075] It is worth noting that when the washing machine is a drum-type washing machine, the motor mentioned above is a variable frequency motor, wherein the variable frequency motor can adjust the motor speed according to the amount of liquid resistance encountered by the inner drum 2 during rotation. Specifically, when the drum-type washing machine is washing clothes, when the inner drum 2 rotates to the wash water level (i.e., the inner drum 2 rotates to a position close to the lower portion of the outer drum 1 under the interaction of the motor, transmission frame, transmission gear, and inner ring gear), the inner drum 2 contacts the wash water in the outer drum 1, generating resistance, increasing the motor power and causing the motor to accelerate. Because the transmission gear meshes with the inner ring gear and the number of teeth on the transmission gear is smaller than that on the inner ring gear, the speed of the inner drum 2 can be instantly increased due to the transmission characteristics of the planetary gear, thereby causing the inner drum 2 to rotate at a higher speed in the wash water and obtain greater washing mechanical force. Therefore, the drum-type washing machine does not need to raise the wash water level too high to achieve sufficient washing of the clothes, thereby achieving the effect of saving water during washing.

[0076] On the other hand, an embodiment of the present invention also provides a clothing washing method, which is applied to the drum washing machine mentioned above. The washing method includes: obtaining the operating power of motor 3 (i.e., variable frequency motor) in real time within a preset washing time, and adjusting the speed of motor 3 in real time according to the operating power of motor 3.

[0077] Specifically, the steps of adjusting the speed of the motor 3 according to the operating power of the motor 3 include:

[0078] Step S1: Determine whether the operating power of the motor is greater than or equal to a first preset power P1; if so, execute step S3; if not, execute step S2;

[0079] Step S2: The motor rotates at a constant speed of a first preset speed V1;

[0080] Step S3: Control the motor's speed to increase.

[0081] More specifically, when the motor is rotated at a first preset speed V1 in accordance with step S2, the operating power of the motor is obtained in real time, and it is determined whether the operating power of the motor is greater than or equal to the first preset power P1; if so, step S3 is executed.

[0082] When the motor speed is controlled to increase according to step S3, the operating power of the motor is obtained in real time, and it is determined whether the operating power of the motor is greater than or equal to the first preset power P1; if not, step S2 is executed.

[0083] The following is an explanation of the specific washing steps of the washing machine when washing clothes:

[0084] like Figure 6 As shown, when the drum washing machine is washing clothes, the user selects the washing mode, the water inlet valve of the washing machine starts to fill water, and at the same time the system determines whether the water level in the washing machine has reached the preset water level. If the water level in the washing machine has reached the preset washing water level, the motor 3 is rotated at a first preset speed V1 and it is determined whether the operating power of the motor is greater than or equal to the first preset power P1. If the water level in the washing machine has not reached the preset washing water level, the washing machine continues to fill with water.

[0085] When the washing water level in the washing machine reaches a preset water level, the motor 3 rotates at a first preset speed V1, and the motor 3 drives the inner drum 2 to revolve through the transmission frame 41 and the transmission gear 42. At the same time, with the cooperation of the inner ring gear 11 and the transmission gear 42, the transmission gear 42 also drives the inner drum 2 to rotate.

[0086] When the inner drum 2 rotates until it contacts the wash water level, the resistance encountered by the inner drum 2 during rotation increases, and the operating power increases accordingly. When the operating power of the motor 3 exceeds the first preset power P1, the speed of the motor 3 increases. Because the transmission gear 42 of the inner drum 2 meshes with the ring gear 11, the rotation speed exceeds the orbital speed due to the speed ratio of the planetary gears. The motor accelerates, causing the rotation speed of the inner drum 2 to increase instantly. This allows the inner drum 2 to rotate at a higher speed in the wash water, generating greater mechanical force for washing.

[0087] Furthermore, the drum-type washing machine repeatedly performs steps S2 to S3 within a preset washing time until the washing time ends.

[0088] It should be noted that in step S3 above, the change in motor 3's speed is positively correlated with the difference between motor 3's operating power and the first preset power P1. That is, motor 3's speed is positively correlated with the resistance encountered by inner drum 2 during rotation. According to the structure of a drum-type washing machine, when inner drum 2 rotates to the point where it just contacts the wash water, it encounters resistance, increases power, and increases speed. As inner drum 2 rotates from this position to its lowest position, its contact with the water gradually increases, as does its resistance, power, and speed. As inner drum 2 continues to rotate, its contact with the wash water gradually decreases as it leaves the lowest position, resulting in a decrease in resistance, power, and speed until inner drum 2 is free of the wash water. Once free of the wash water, the motor resumes rotation at the first preset speed V1. As can be seen from the above, motor 3 accelerates during this period of contact with the wash water. That is, the speed of motor 3 is controlled according to the resistance it encounters when it comes into contact with washing water. That is, motor 3 does not always rotate at high speed and high power, so that motor 3 can work in an optimal state, ensuring washing efficiency while increasing the service life of motor 3.

[0089] It should also be noted that the first preset power P1 mentioned above corresponds to the power at the first preset speed V1, wherein the first preset speed V1 is greater than or equal to the speed of the motor 3 when the washing machine is unloaded. Preferably, the first preset power P1 is the power at the first preset speed V1, and the first preset speed V1 is equal to the speed of the motor when the washing machine is unloaded.

[0090] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A washing machine, characterized in that: It comprises an outer cylinder (1) and an inner cylinder (2) rotatably arranged in the outer cylinder (1), wherein the axis of the inner cylinder (2) is arranged to deviate from the axis of the outer cylinder (1); The washing machine further comprises a driving assembly (4), the driving assembly (4) being arranged at the bottom of the inner drum (2) and being configured to simultaneously drive the inner drum (2) to rotate and revolve, and when the inner drum (2) rotates and revolves, the driving assembly (4) is further configured to change the rotation speed and the revolving speed of the inner drum (2) according to the change in resistance encountered by the inner drum (2) during rotation; One or more inner drums (2) are provided, and a washing area is formed inside each inner drum and in the space enclosed by the outer wall of the inner drum and the inner wall of the outer drum. The driving component (4) can simultaneously drive one or more inner drums (2) to rotate synchronously; The driving assembly (4) comprises a rotating portion (41), a transmission portion (42), a first matching portion (43) and a second matching portion (44); The transmission part (42) has a first connection end connected to the rotating part (41) and a second connection end connected to the first matching part (43); The first connecting end and the second connecting end connect the rotating part (41) and the first matching part (43) to transmit the output power of the rotating part (41) to the inner cylinder (2) to drive the inner cylinder (2) to revolve relative to the rotating part (41); The second connecting end of the transmission part (42) is also connected to the first matching part (43), and the second matching part (44) is arranged at the bottom of the outer cylinder (1). When the transmission part (42) drives the inner cylinder (2) to revolve, the first matching part (43) cooperates with the second matching part (44) at the bottom of the outer cylinder (1) so that the inner cylinder (2) can rotate while revolving. The transmission part (42) includes a first transmission frame (421) arranged along the axial direction of the inner cylinder (2) and at least one second transmission frame (422) arranged along the radial direction of the inner cylinder (2), the free end of the first transmission frame (421) in the transmission part (42) serving as a first connection end connected to the rotating part (41), and the free end of the second transmission frame (422) in the transmission part (42) serving as a second connection end connected to the first matching part (43); The first matching portion (43) includes a transmission gear rotatably connected to the second connection end of the second transmission frame (422), the transmission gear being fixedly connected to the bottom center of the inner cylinder (2), and the second matching portion (44) includes an inner gear ring formed at the bottom of the outer cylinder (1); The transmission gear is meshed with the inner gear ring and the number of teeth of the transmission gear is smaller than the number of teeth of the inner gear ring.

2. The washing machine according to claim 1, wherein When a plurality of inner cylinders (2) are provided, the distance between the centers of two adjacent inner cylinders (2) is greater than the sum of the radii of the two inner cylinders (2).

3. The washing machine according to claim 2, characterized in that The difference between the distance between the centers of two adjacent inner cylinders (2) and the sum of the radii of the two inner cylinders (2) is s, and 10cm≤s≤20cm.

4. The washing machine according to claim 1, wherein The rotating part (41) includes a motor, the output shaft of the motor is arranged at the center of the inner gear ring (11), and the first connecting end of the first transmission frame (421) is drivingly connected to the output shaft of the motor.

5. The washing machine according to claim 4, characterized in that The inner gear ring is arranged concentrically with the outer cylinder (1).

6. The washing machine according to claim 5, characterized in that A circular hole concentric with the outer cylinder (1) is provided at the bottom of the outer cylinder (1), and the inner gear ring is formed on the inner wall surface of the circular hole.

7. The washing machine according to claim 6, characterized in that The washing machine is a drum-type washing machine, and the motor is a variable frequency motor. The variable frequency motor can adjust the rotation speed of the motor according to the liquid resistance encountered when the inner drum (2) rotates.

8. The washing machine according to claim 7, characterized in that The washing machine is a pulsator type washing machine.

9. A method for washing clothes, applied to the washing machine according to any one of claims 1 to 8, characterized in that: The washing method comprises: obtaining the operating power of the motor in real time within a preset washing time, and adjusting the rotation speed of the motor in real time according to the operating power of the motor.

10. The laundry washing method according to claim 9, wherein: The step of adjusting the motor speed according to the operating power of the motor includes: Step S1: Determine whether the operating power of the motor is greater than or equal to a first preset power P1; if so, execute step S3; if not, execute step S2; Step S2: causing the motor to rotate at a constant speed at a first preset speed V1; Step S3: controlling the rotation speed of the motor to increase.

11. The laundry washing method according to claim 10, wherein: When the motor is rotated at a constant speed of the first preset speed V1 according to step S2, the operating power of the motor is obtained in real time, and it is determined whether the operating power of the motor is greater than or equal to the first preset power P1; If yes, go to step S3. When the speed of the motor is controlled to increase according to step S3, the operating power of the motor is obtained in real time, and it is determined whether the operating power of the motor is greater than or equal to the first preset power P1; if not, step S2 is executed.

12. The laundry washing method according to claim 11, wherein: During the preset washing time, steps S2 to S3 are repeated until the washing time ends.

13. The laundry washing method according to any one of claims 10 to 12, characterized in that: In step S3 , the change in the motor speed is positively correlated with the difference between the motor operating power and the first preset power P1 .

14. The laundry washing method according to claim 13, wherein: The first preset power P1 is greater than or equal to the power under the first preset speed V1, and the first preset speed V1 is greater than or equal to the motor speed of the washing machine when it is unloaded.

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