A washing drum assembly and a washer-dryer

Abstract

The present invention provides a washing drum assembly and a washer-dryer. The washing drum assembly includes: an outer drum having an accommodation cavity formed therein, a bracket being disposed outside the accommodation cavity and connected to the bottom wall of the outer drum; an inner drum rotatably disposed in the accommodation cavity, a rotating shaft being connected to the inner drum and rotatably connected to the outer drum; a driving mechanism for driving the inner drum to rotate, including: a rotor connected to the rotating shaft for driving the rotating shaft to rotate; a magnet disposed circumferentially around the rotor and fixed to the bracket, when the rotor is energized, it acts with the magnet to drive the inner drum to rotate by the rotor. The present invention can reduce the vibration and noise caused by the rigid connection between the inner and outer drums.

Description

Technical Field

[0001] The present invention relates to the technical field of washing and drying machines, and in particular, to a washing drum assembly and a washing and drying machine. Background Art

[0002] Generally, drum washing and drying machines include: electric heater drying washing and drying machines and heat pump drying washing and drying machines. The electric heater drying washing and drying machine dries clothes by directly heating air, and its heating channel is communicated with the inner cylinder. After long-term operation, the electric heater is prone to accumulating dirt, which will not only reduce the heating performance of the electric heater, but also cause peculiar smell on the clothes after heating. The heating principle of the heat pump drying washing and drying machine is the same as that of an air conditioner, including a compressor, an evaporator, a condenser and a throttle valve, so its structure is very complex and the production cost becomes higher. In the traditional drying method, the condensation channel is communicated with the drying channel, resulting in uneven dryness of clothes after drying. Summary of the Invention

[0003] In view of this, the present invention provides a washing drum assembly and a washing and drying machine, which are at least used to solve the technical problem of large vibration caused by rigid connection between the inner and outer cylinders in the prior art. Specifically:

[0004] In a first aspect, the present invention provides a washing drum assembly, including:

[0005] An outer cylinder, with a receiving cavity formed inside, and a bracket is arranged outside the receiving cavity, and the bracket is connected to the bottom wall of the outer cylinder;

[0006] An inner cylinder, rotatably arranged in the receiving cavity, and a rotating shaft is connected to the inner cylinder, and the rotating shaft is rotatably connected to the outer cylinder;

[0007] A driving mechanism for driving the inner cylinder to rotate, including:

[0008] A rotor, connected to the rotating shaft, for driving the rotating shaft to rotate;

[0009] A magnet, arranged circumferentially around the rotor and fixed on the bracket, and when the rotor is energized, it acts with the magnet to drive the inner cylinder to rotate by the rotor.

[0010] Further optionally,

[0011] A suspension body, including a disc main body and a connecting shaft, the connecting shaft is rotatably supported between the bracket and the bottom wall of the outer cylinder and is connected to the rotating shaft, and the rotor is connected to the rotating shaft through the suspension body,

[0012] A metal body is arranged on the outer peripheral wall of the disc main body;

[0013] The levitation excitation body includes an annular main body and a mounting frame. The mounting frame is rotatably connected to the bracket, and the annular main body is sleeved outside the disc main body.

[0014] A plurality of permanent magnets are arranged on the inner peripheral wall of the annular main body along its circumferential direction. When the annular main body rotates, repulsive forces are generated between the permanent magnets and the metal body to counteract the gravity of the inner cylinder.

[0015] Further optionally, a plurality of permanent magnets are arranged on the inner peripheral wall of the levitation excitation body along its axial direction.

[0016] Further optionally, the washing cylinder assembly further includes a radial damping device for supporting the rotating shaft of the inner cylinder and / or the connecting shaft of the levitation body in the radial direction.

[0017] Further optionally, the radial damping device includes a buffer body and rigid support bodies arranged at both ends of the buffer body.

[0018] Further optionally, it further includes a drying system, and the drying system includes:

[0019] An electromagnetic induction module. A plurality of the electromagnetic induction modules are arranged on the side peripheral wall and the bottom wall of the outer cylinder for heating the inner cylinder.

[0020] A cooling system is arranged on the outer cylinder and communicated with the inner cylinder for cooling the air inside the inner cylinder.

[0021] Further optionally, the electromagnetic induction module includes:

[0022] A first electromagnetic induction module is arranged on the side peripheral wall of the outer cylinder for heating the side wall of the inner cylinder.

[0023] A second electromagnetic induction module is arranged on the bottom wall of the outer cylinder.

[0024] Further optionally, the first electromagnetic induction module includes a plurality of electromagnetic induction units, and the plurality of electromagnetic induction units are distributed in a region corresponding to the length of the inner cylinder.

[0025] Further optionally, a plurality of the first electromagnetic induction modules are distributed along the circumferential direction of the outer cylinder.

[0026] Further optionally, the second electromagnetic induction module includes a plurality of electromagnetic induction units, and the plurality of electromagnetic induction units are distributed in a region corresponding to the bottom wall of the inner cylinder.

[0027] Further optionally, it further includes a temperature sensing device arranged on the outer cylinder for monitoring the temperature of the clothes in the washing cylinder.

[0028] Further optionally, the cooling system includes:

[0029] An air duct, which is arranged on the outer cylinder and communicates with the space between the outer cylinder and the inner cylinder to form a circulation path;

[0030] A fan, which is arranged on the side wall of the outer cylinder and is used to make the air flow between the air duct and the inner cylinder;

[0031] A heat exchange structure, which is connected to the air duct and is used to cool the air flow.

[0032] Further optionally, it further includes a wind blade, which is located between the inner cylinder and the outer cylinder and is on the same rotating shaft as the outer cylinder.

[0033] A ventilation opening is arranged on the bottom wall of the outer cylinder, and when the wind blade rotates, it can make air flow generated between the inner cylinder and the outer cylinder through the ventilation opening.

[0034] In a second aspect, the present invention provides a washing and drying machine, including the above-mentioned washing cylinder assembly.

[0035] Through two first electromagnetic induction modules and one second electromagnetic induction module, the three electromagnetic induction modules work simultaneously to form induced eddy currents on the metal surfaces of the inner cylinder in the radial and axial directions of the cylinder wall, and use the heat generated by the eddy currents to dry the clothes evenly as a whole. The drying heating device is separated from the inner cylinder, avoiding the phenomenon of dirt accumulation in the traditional air heating channel. In addition, the present invention uses the magnet array arranged by permanent magnets to realize the suspension of the inner cylinder, reducing the vibration and noise caused by the rigid connection between the inner and outer cylinders. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] By referring to the accompanying drawings and describing its exemplary embodiments in detail, the above and other objectives, features and advantages of the present disclosure will become more obvious. The following described drawings are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0037] Figure 1 Showing a schematic structural diagram of the washing cylinder assembly according to an embodiment of the present invention;

[0038] Figure 2 Showing a schematic internal structure diagram of the washing cylinder assembly according to an embodiment of the present invention;

[0039] Figure 3 Showing Figure 2 The enlarged view at A in

[0040] Figure 4 Showing a schematic end face diagram of the washing cylinder assembly according to an embodiment of the present invention;

[0041] Figure 5Schematic cross-sectional view showing the outer cylinder of the present invention in implementation;

[0042] Figure 6 Schematic structural view showing the radial damping device.

[0043] In the figure:

[0044] 1. Outer cylinder; 11. First electromagnetic induction module; 12. Second electromagnetic induction module; 13. Fan; 14. Bracket; 15. Heat exchange structure; 16. Temperature sensing device; 17. Vent; 2. Inner cylinder; 3. Magnet; 4. Rotor; 5. Suspension body; 51. Metal body; 6. Wind blade; 7. Suspension excitation body; 71. Permanent magnet; 8. Radial damping device; 81. Buffer body; 82. Rigid support body. Detailed implementation manners

[0045] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "said" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms unless the context clearly dictates otherwise. "Plural" generally includes at least two, but does not exclude the case of including at least one.

[0047] It should be understood that the term " / and / " used herein is only a description of the associated relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0048] It should also be noted that the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a commodity or system comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such commodity or system. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the commodity or system comprising said element.

[0049] The present invention realizes the overall heating of the inner cylinder's radial and axial cylinder walls through two first electromagnetic induction modules and one second electromagnetic induction module, thereby evenly drying clothes. The condensation tank and the drying channel are separated, and after the entire drying process, the clothes will not show uneven humidity and heat. The temperature sensor can detect the clothes temperature in real time, and after the drying is completed, the clothes temperature reaches the human body's sensible temperature. In addition, the present invention uses a magnet array arranged by permanent magnets to realize the suspension of the inner cylinder, reducing the vibration and noise caused by the rigid connection between the inner and outer cylinders. The following is a detailed introduction to the present invention with specific embodiments:

[0050] As Figures 1-6 shown, the present invention provides a washing cylinder assembly for a washing and drying integrated machine, which can not only wash clothes but also complete the drying of clothes. It includes: an outer cylinder 1, with an accommodation cavity formed inside, and a bracket 14 is arranged outside the accommodation cavity, and the bracket 14 is connected to the bottom wall of the outer cylinder 1;

[0051] An inner cylinder 2, rotatably arranged in the accommodation cavity, and a rotating shaft is connected to the inner cylinder 2, and the rotating shaft is rotatably connected to the outer cylinder 1;

[0052] A driving mechanism for driving the inner cylinder 2 to rotate, including:

[0053] A rotor 4, connected to the rotating shaft, for driving the rotating shaft to rotate. The rotor 4 includes a rotor iron core, and a coil is wound around the rotor iron core;

[0054] A magnet 3, arranged circumferentially around the rotor 4 and fixed on the bracket 14. When the coil on the rotor iron core is energized, it acts with the magnet 3 to drive the rotor 4 to drive the inner cylinder 2 to rotate.

[0055] Preferably, it further includes:

[0056] A suspension body 5, including a disc main body and a connecting shaft. The connecting shaft is rotatably supported between the bracket 14 and the bottom wall of the outer cylinder 1 and is connected to the rotating shaft and the rotor 4. The rotor 4 is connected to the rotating shaft through the suspension body 5,

[0057] A metal body 51 is arranged on the outer peripheral wall of the disc main body for generating an induced electromotive force;

[0058] The levitation exciter 7 includes an annular main body and a mounting bracket. The mounting bracket is rotatably connected to the bracket 14. The annular main body is sleeved outside the disc main body. A plurality of permanent magnets 71 are arranged along the circumferential direction of the inner peripheral wall of the annular main body. When the levitation exciter 7 starts to rotate, an induced electromotive force is generated on the surface of the metal body 51. The direction of the magnetic field of the induced electromotive force is exactly opposite to the magnetic field direction of the permanent magnet array. Therefore, a repulsive force is generated between the metal body 51 and the exciter. And when the speed of the levitation exciter 7 is getting higher and higher, the repulsive force generated between the metal body 51 and the levitation exciter 7 is also getting larger and larger until the gravity of the inner cylinder 2 can be offset. Preferably, the levitation exciter 7 can be driven by the rotor 4 or driven to rotate by other external driving mechanisms.

[0059] As Figure 2 , Figure 3 shown, a plurality of permanent magnets 71 are arranged along the axial direction of the inner peripheral wall of the levitation exciter 7. For example, it includes a first permanent magnet array composed of several permanent magnets 71, which are arranged according to the rules in Figure 3 . The N pole of each permanent magnet 71 points in the direction indicated by the arrow, that is, the N pole faces radially outward or inward, or is arranged circumferentially. The N pole directions of the plurality of permanent magnets 71 can be arranged at intervals, that is, as shown in Figure 3 . This arrangement results in a high magnetic field peak inside the permanent magnet array and a low magnetic field peak outside, so it has a strong magnetic field inside.

[0060] Furthermore, it also includes a second permanent magnet array and a third permanent magnet array to ensure that a magnetic field with sufficient intensity can be generated between the permanent magnet arrays and the metal body, so as to ensure that the inner cylinder can be levitated smoothly.

[0061] As Figure 1 , Figure 6 shown, preferably, it also includes a radial damping device 8 for supporting the rotating shaft of the inner cylinder 2 and / or the connecting shaft of the levitation body 5 in the radial direction. The radial damping device 8 includes a buffer body 81 and rigid support bodies 82 arranged at both ends of the buffer body 81.

[0062] The radial damping device 8 is arranged circumferentially along the connecting shaft of the levitation body 5 to support the connecting shaft, and the radial damping device 8 is also used to support the rotating shaft of the inner cylinder 2, preferably to support the bearing on the rotating shaft along the circumferential direction. When the inner cylinder 2 stops rotating, the gravity is borne by the radial damping device 8 located on the lower side, and the buffer body 81 contracts under pressure. When the inner cylinder 2 rotates, under the action of the levitation body 5 and the levitation exciter 7, the gravity of the inner cylinder 2 is offset by the repulsive force generated between the metal body 51 and the levitation exciter 7, and the buffer body 81 gradually returns to its original shape.

[0063] During the washing process, the suspension exciter 7 starts to rotate first, and an repulsive force is immediately generated between the metal body 51 and the suspension exciter 7. When the speed of the suspension exciter 7 becomes higher and higher, the repulsive force generated between the metal body 51 and the suspension exciter 7 also becomes greater and greater until it cancels out the gravity of the inner cylinder 2, and the inner cylinder 2 starts to levitate. When the inner cylinder 2 levitates, the coil on the rotor core is energized, and the entire rotor 14 starts to rotate under the force, and drives the inner cylinder 2 fixed thereon to rotate through the tripod. At the end of the washing, the coil on the rotor core is de-energized, and the inner cylinder 2 gradually stops rotating. When the inner cylinder 2 stops rotating, the suspension exciter 7 gradually stops rotating, and the inner cylinder 2 gradually drops under the action of gravity.

[0064] The washing cylinder assembly further includes: an electromagnetic induction module, multiple electromagnetic induction modules are provided, distributed on the side wall and the bottom wall of the outer cylinder 1, and used for heating the inner cylinder 2;

[0065] A cooling system, provided on the outer cylinder 1 and communicated with the inner cylinder 2, and used for cooling the air inside the inner cylinder 2.

[0066] Preferably, the electromagnetic induction module includes: a first electromagnetic induction module 11, provided on the side wall of the outer cylinder 1, and used for heating the side wall of the inner cylinder 2. The first electromagnetic induction module 11 includes multiple electromagnetic induction units. The electromagnetic induction units are connected to an AC power supply, and each electromagnetic induction unit generates a magnetic field. The phase of the AC power supply changes continuously, so that the direction of the magnetic field of the electromagnetic induction unit changes continuously, thereby generating an induced current on the local surface of the inner cylinder 2 made of a metal material. The induced current is an eddy current, and the eddy current continuously generates heat. Since the inner cylinder 2 rotates continuously, the entire circumferential surface of the inner cylinder 2 can be heated. As time changes, the surface temperature of the inner cylinder 2 continuously increases, and its heat is transferred from the surface of the inner cylinder 2 to the clothes.

[0067] Further, the multiple electromagnetic induction units of the first electromagnetic induction module 11 are distributed in a region corresponding to the length of the inner cylinder. Preferably, the length of the distribution region of the multiple electromagnetic induction units is the same as the length of the inner cylinder 2, and this distribution region has a certain width along the circumferential direction of the outer cylinder 1, and the width can be determined according to the size of the washing cylinder.

[0068] As Figure 4 shown, preferably, multiple first electromagnetic induction modules 11 are distributed along the circumferential direction of the outer cylinder 1 to increase the heating area. The multiple first electromagnetic induction modules 11 are arranged at intervals along the circumferential direction of the outer cylinder 1. For example, in this embodiment, two first electromagnetic induction modules 11 are provided, and the first electromagnetic induction modules 11 are provided at positions on both sides below the outer cylinder 1. The two first electromagnetic induction modules 11 can be started simultaneously, or can be started separately to adapt to the drying of different amounts of clothes.

[0069] The electromagnetic induction module further includes: a second electromagnetic induction module 12, disposed on the bottom wall of the outer cylinder 1 for heating the bottom wall of the inner cylinder 2. The second electromagnetic induction module 12 includes a plurality of electromagnetic induction units. The electromagnetic induction units are connected to an AC power supply, and each electromagnetic induction unit generates a magnetic field. The continuously changing phase of the AC power supply causes the magnetic field direction of the electromagnetic induction unit to continuously change, thereby generating an induced current on the local surface of the inner cylinder 2 made of a metallic material. The induced current is an eddy current, and the eddy current continuously generates heat. Since the inner cylinder 2 is continuously rotating, the entire circumferential surface of the inner cylinder 2 can be heated. As time goes by, the surface temperature of the inner cylinder 2 continuously rises, and its heat is transferred from the surface of the inner cylinder 2 to the clothes.

[0070] Preferably, the plurality of electromagnetic induction units of the second electromagnetic induction module 12 are distributed in the area corresponding to the bottom wall of the inner cylinder 2, and the distribution area of the plurality of electromagnetic induction units is a circular area having the same size as the bottom wall of the inner cylinder 2 to cover the heating area of the bottom wall of the inner cylinder 2 within the maximum range.

[0071] Preferably, the first electromagnetic induction module 11 and the axial induction module can operate simultaneously, or one or several of them can be selected to operate according to the quantity or type of the clothes to be washed.

[0072] The setting of multiple electromagnetic induction modules and their being disposed at different positions can achieve heating from multiple angles and within a large range to the maximum extent.

[0073] Preferably, a temperature sensing device 16 is further included. The temperature sensing device 16 is disposed on the outer cylinder 1 and faces the middle of the lower surface of the inner cylinder 2, and it can detect the temperature of the clothes in the inner cylinder 2 in real time and provide feedback for detecting the temperature inside the washing cylinder and the clothes on the surface of the clothes.

[0074] In this embodiment, as Figure 1 、 Figure 5 shown, the cooling system includes:

[0075] An air duct, disposed on the outer cylinder 1 and communicating with the space between the inner cylinder 2 and the outer cylinder to form a circulation path;

[0076] A blower 12, disposed on the side wall of the outer cylinder 1, for providing driving force to make the air flow circulate between the air duct and the inner cylinder 2;

[0077] A heat exchange structure 15, connected to the air duct, for cooling the air flow.

[0078] Preferably, an air duct is formed on the side wall of the outer cylinder 1, including a condensation pipe and a condensation water tank. The condensation pipe is communicated with the air duct for air circulation. The condensation pipe is located in the condensation water tank, and the condensation water tank further includes a condensation water flow channel for the circulation of condensed water. When the condensation water tank is filled with condensed water, the condensation pipe is immersed in the condensation water tank, so that the air in the condensation pipe can fully exchange heat with the condensed water. In this embodiment, the condensed water is separated from the air flow in the condensation pipe, which will not increase the moisture in the air flow and will not increase the humidity of the clothes.

[0079] As Figure 1 , Figure 5 shown, it further includes a wind blade 6. The wind blade 6 is located between the inner cylinder 2 and the outer cylinder 1 and is on the same rotating shaft as the outer cylinder 1, and can rotate synchronously with the inner cylinder 2. Ventilation holes 17 are provided on the bottom wall of the outer cylinder 1. When the wind blade 6 rotates, air flow can enter or flow out of the outer cylinder 1 through the ventilation holes 17. The setting of the wind blade 6 can promote the air flow between the outer cylinder 1 and the inner cylinder 2, thereby promoting the generation of air flow in the inner cylinder 2.

[0080] Preferably, when the drying operation is performed, the heat exchange structure 15 is closed, and only the fan 12 and / or the wind blade 6 is turned on to generate air flow in the inner cylinder 2, so that the air flow is accelerated, thereby accelerating the entire drying process.

[0081] The present invention also provides a control method for a washing cylinder assembly, including:

[0082] A drying program, controlling the rotation of the inner cylinder 2 and turning on the electromagnetic induction module to heat the washing cylinder;

[0083] Preferably, the fan 12 and the wind blade 6 are also turned on during the drying program to generate a circulating air flow in the inner cylinder 2, so that the air flow is accelerated, thereby accelerating the entire drying process.

[0084] A cooling program, the inner cylinder 2 keeps rotating, the electromagnetic induction heating module is turned off, and the cooling system is turned on.

[0085] Preferably, during the cooling program, the inner cylinder 2 rotates, and the fan 12 and the wind blade 6 are turned on, which also has the effect of accelerating the air flow and accelerating the cooling.

[0086] During the drying and cooling processes, the temperature sensing device 16 detects the temperature inside the cylinder in real time. During the drying program, when it is detected that the temperature rises to the preset temperature, the heating is stopped, and then the inner cylinder 2, the fan 12 and the wind blade 6 stop rotating, and the drying program ends.

[0087] Similarly, during the cooling process, the temperature sensing device 16 detects the temperature inside the cylinder in real time. During the cooling program, when it is detected that the surface temperature of the clothes drops to the human body temperature or, the cooling is stopped.

[0088] During the drying process, the suspension exciter 7 starts to rotate, and an repulsive force is immediately generated between the metal body 51 and the suspension exciter 7. When the speed of the suspension exciter 7 becomes higher and higher, the repulsive force generated between the metal body 51 and the suspension exciter 7 also becomes greater and greater until it cancels out the gravity of the inner cylinder, and the inner cylinder 2 starts to levitate. When the inner cylinder 2 levitates, the coils on the rotor core, the first electromagnetic induction module 11, and the second electromagnetic induction module are energized, and the entire rotor 14 starts to rotate under the action of force and drives the inner cylinder 2 to rotate through the rotating shaft. When the inner cylinder 2 rotates clockwise, the first electromagnetic induction module 11 on the right and the first electromagnetic induction module 11 on the left heat the radial surface of the inner cylinder 2 in sequence, and the second electromagnetic induction module 12 heats the axial surface of the inner cylinder 2. The heat is transferred to the clothes through the surface of the inner cylinder 2, thereby drying the clothes. When the inner cylinder 2 rotates counterclockwise, the first electromagnetic induction module 11 on the left and the first electromagnetic induction module 11 on the right heat the radial surface of the inner cylinder 2 in sequence, and the second electromagnetic induction module 12 heats the axial surface of the inner cylinder 2. The heat is transferred to the clothes through the surface of the inner cylinder 2, thereby drying the clothes. At the end of the drying process, the coils on the rotor core, the first electromagnetic induction module 11 on the right, the first electromagnetic induction module 11 on the left, and the second electromagnetic induction module 12 are powered off simultaneously, and the inner cylinder 2 gradually stops rotating. When the inner cylinder 2 stops rotating, the suspension exciter 7 gradually stops rotating, and the inner cylinder 2 gradually falls under the action of gravity.

[0089] The present invention also provides a washing and drying machine, including the above-mentioned washing cylinder assembly, or capable of being controlled by the control method of the above-mentioned washing cylinder assembly.

[0090] Two electromagnetic induction modules are radially installed on the outer cylinder 1 of the present invention, and one electromagnetic induction module is axially installed at the same time. During the drying process of the washing and drying machine, the three electromagnetic induction modules work simultaneously to achieve the overall heating of the radial and axial cylinder walls of the inner cylinder 2, thereby drying the clothes evenly. Then, through the separation of the condensation tank and the drying channel, after the entire drying process is completed, the clothes will not show the phenomenon of uneven humidity and heat. The temperature sensing probe can detect the temperature of the clothes in real time. After the drying process is completed, the temperature of the clothes reaches the human body feeling temperature.

[0091] The above specifically shows and describes the exemplary embodiments of the present disclosure. It should be understood that the present disclosure is not limited to the detailed structures, settings, or implementation methods described herein; on the contrary, the present disclosure intends to cover various modifications and equivalent settings included within the spirit and scope of the appended claims.

Claims

1. A washing cylinder assembly, characterized in that: it includes: an outer cylinder, with a receiving cavity formed inside, a bracket is arranged outside the receiving cavity, and the bracket is connected to the bottom wall of the outer cylinder; an inner cylinder, rotatably arranged in the receiving cavity, a rotating shaft is connected to the inner cylinder, and the rotating shaft is rotatably connected to the outer cylinder; a driving mechanism, used to drive the inner cylinder to rotate, including: a rotor, connected to the rotating shaft, used to drive the rotating shaft to rotate; a magnet, arranged circumferentially around the rotor and fixed on the bracket, when the rotor is energized, it acts with the magnet to drive the inner cylinder to rotate through the rotor; a suspension body, including a disc main body and a connecting shaft, the connecting shaft is rotatably supported between the bracket and the bottom wall of the outer cylinder and is connected to the rotating shaft, the rotor is connected to the rotating shaft through the suspension body, and a metal body is arranged on the outer peripheral wall of the disc main body; a suspension excitation body, including an annular main body and a mounting frame, the mounting frame is rotatably connected to the bracket, the annular main body is sleeved outside the disc main body, a plurality of permanent magnets are arranged on the inner peripheral wall of the annular main body along its circumference, when the annular main body rotates, the permanent magnets and the metal body generate a repulsive force, which can offset the gravity of the inner cylinder; and, a plurality of permanent magnets are axially distributed on the inner peripheral wall of the suspension excitation body to form a permanent magnet array, wherein, the N pole of each permanent magnet in the permanent magnet array faces radially outward or inward, or is arranged circumferentially, so that the magnetic field peak value inside the permanent magnet array is higher than the magnetic field peak value outside.

2. The washing cylinder assembly according to claim 1, characterized in that: it further includes a radial damping device, used to support the rotating shaft of the inner cylinder and / or the connecting shaft of the suspension body in the radial direction.

3. The washing cylinder assembly according to claim 2, characterized in that: the radial damping device includes a buffer body and rigid support bodies arranged at both ends of the buffer body.

4. The washing cylinder assembly according to any one of claims 1-3, characterized in that: it further includes a drying system, and the drying system includes: an electromagnetic induction module, a plurality of the electromagnetic induction modules are arranged, distributed on the side peripheral wall and the bottom wall of the outer cylinder, and used to heat the inner cylinder; a cooling system, arranged on the outer cylinder and communicated with the inner cylinder, and used to cool the air inside the inner cylinder.

5. The washing cylinder assembly according to claim 4, characterized in that: the electromagnetic induction module includes: a radial electromagnetic induction module, arranged on the side peripheral wall of the outer cylinder, and used to heat the side wall of the inner cylinder; an axial electromagnetic induction module, arranged on the bottom wall of the outer cylinder.

6. The washing cylinder assembly according to claim 5, characterized in that: the radial electromagnetic induction module includes a plurality of electromagnetic induction units, and the distribution area length of the plurality of electromagnetic induction units is the same as the length of the inner cylinder.

7. The washing cylinder assembly according to claim 6, characterized in that: a plurality of the radial electromagnetic induction modules are circumferentially distributed along the outer cylinder.

8. The washing cylinder assembly according to claim 5, characterized in that: The axial electromagnetic induction module includes a plurality of electromagnetic induction units, and the distribution area of the plurality of electromagnetic induction units is a circular area having the same size as the bottom wall of the inner cylinder.

9. The washing cylinder assembly according to claim 4, wherein: It further includes a temperature sensing device disposed on the outer cylinder for monitoring the temperature of the laundry in the washing cylinder.

10. The washing cylinder assembly according to claim 4, wherein: The cooling system includes: An air duct disposed on the outer cylinder and communicating with the space between the outer cylinder and the inner cylinder to form a circulation path; A blower disposed on the side wall of the outer cylinder for causing air flow to circulate between the air duct and the inner cylinder; A heat exchange structure connected to the air duct for cooling the air flow.

11. The washing cylinder assembly according to claim 10, wherein: It further includes a wind blade located between the inner cylinder and the outer cylinder and on the same rotating shaft as the outer cylinder, A ventilation opening is provided on the bottom wall of the outer cylinder, and when the wind blade rotates, it can cause air flow to be generated in the inner cylinder and the outer cylinder through the ventilation opening.

12. A washer-dryer, wherein: It includes the washing cylinder assembly according to any one of claims 1-11.

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