Washing machine and control method thereof

Abstract

The present invention belongs to the technical field of clothing processing equipment, and specifically relates to a washing machine and a control method thereof. The present invention aims to solve the problems existing in existing washing machines, such as the long water inlet time when the water pressure is low, which leads to an extended washing cycle, inaccurate remaining time, and the difficulty in carrying the washing machine due to the heavy weight of the washing machine. To this end, in the present invention, a water tank is fixedly connected to the upper part of the outer drum, and the curved bottom surface formed by the water tank is adapted to the outside of the outer drum, and the water outlet provided on the curved bottom surface is connected to the water inlet provided on the upper part of the outer drum. In this way, water can be supplied to the outer drum through the water tank during the water inlet stage, so that the water inlet time is basically consistent, thereby ensuring the accuracy of the washing time and greatly shortening the water inlet time required before washing. In addition, it is also possible to control the water supply pipe to replenish water to the water tank after the washing machine enters the washing stage, so that the water tank and the water inside it can act as a counterweight during the dehydration stage to reduce the vibration and noise generated by the high-speed rotation of the inner drum.

Description

Technical Field

[0001] The present invention belongs to the technical field of clothing processing equipment, and particularly relates to a washing machine and a control method thereof. Background Art

[0002] Existing washing machines generally have both a wash and a spin function. During the wash phase, water is first fed into the outer drum by tap water pressure, and washing begins when the water level in the outer drum reaches the required level. During the spin phase, the inner drum spins at high speed to remove water from the clothes.

[0003] However, due to significant variations in tap water pressure across different regions and at different times, the water inflow time can be unpredictable, leading to inaccurate remaining wash times. Furthermore, when the water pressure is low, the water inflow time can be longer, significantly extending the washing cycle. Furthermore, to reduce the vibration and noise generated by the high-speed rotation of the inner drum, counterweights are often added to the outer drum. This increases the weight of the washing machine, increasing packaging and logistics costs and potentially damaging it during transportation.

[0004] Accordingly, the art needs a new washing machine and a control method thereof to solve the above problems. Summary of the Invention

[0005] In order to solve the above-mentioned problems in the prior art, namely, to solve the problem that the water inlet time of the existing washing machine is uncontrollable, resulting in inaccurate remaining washing time, and the water inlet time is long when the water pressure is low, resulting in a prolonged washing cycle, and the washing machine is heavy and makes it difficult to carry the washing machine, the present invention provides a washing machine and a control method thereof.

[0006] First, in a washing machine provided by the present invention, the washing machine is a front-opening type, and the washing machine includes an outer drum and a water tank fixedly connected to the upper part of the outer drum, the arc-shaped bottom surface formed by the water tank is adapted to the outside of the outer drum; and the water outlet arranged on the arc-shaped bottom surface is connected to the water inlet arranged on the upper part of the outer drum.

[0007] As a preferred technical solution of the above-mentioned washing machine provided by the present invention, a plurality of water storage chambers are provided in the water tank, and the volumes of the respective water storage chambers and the volume formed by their combination are adapted to the multiple preset water volumes of the outer drum; and a plurality of water outlets are provided on the curved bottom surface, which are respectively connected to the multiple water storage chambers.

[0008] As a preferred technical solution of the washing machine provided by the present invention, the multiple water inlets of the outer drum are respectively provided with fixed pipes; the outer drum is plugged into the multiple water outlets on the arc-shaped bottom surface through the multiple fixed pipes.

[0009] As a preferred technical solution of the above-mentioned washing machine provided by the present invention, the water tank is provided with three water storage chambers with volumes of 5 liters, 7.5 liters and 10 liters respectively.

[0010] As a preferred technical solution of the above-mentioned washing machine provided by the present invention, it also includes a water level sensor; the water level sensor includes a base and a connecting wire and two probes fixedly connected to the base; the end of the probe close to the base is provided with hydrophobic rubber, and the end of the probe away from the base is a metal detection end; a socket is provided on the top of each water storage chamber; the two probes of the water level sensor extend into the water storage chamber through the socket.

[0011] As a preferred technical solution of the above-mentioned washing machine provided by the present invention, it also includes a detergent dispensing box, the inlet of the detergent dispensing box is connected to a water inlet pipe, and the outlet of the detergent dispensing box is connected to a water supply pipe for supplying water to the water tank.

[0012] As a preferred technical solution of the above-mentioned washing machine provided by the present invention, the washing machine further includes a hanging spring, one end of which is connected to the washing machine casing and the other end is connected to the outer drum; and / or further includes a damper, one end of which is connected to the bottom end of the casing and the other end is connected to the outer drum; and / or the rear end of the outer drum is provided with a lower counterweight

[0013] As a preferred technical solution of the washing machine provided by the present invention, the water tank includes a tank body and a tank cover; the tank body and the tank cover are connected by means of a slot and a buckle.

[0014] Then, the present invention also provides a control method for a washing machine, which is a front-opening washing machine, comprising an outer drum and a water tank fixedly connected to the upper part of the outer drum, wherein the arc-shaped bottom surface formed by the water tank is adapted to the outside of the outer drum; and the water outlet arranged on the arc-shaped bottom surface is connected to the water inlet arranged on the upper part of the outer drum; the control method comprises: controlling the water tank to supply water to the outer drum during the water inlet stage; and when the water inlet stage ends and the washing machine enters the washing stage, controlling the water supply pipe to replenish water to the water tank.

[0015] As a preferred technical solution to the control method provided by the present invention, the water tank is provided with multiple water storage chambers, and the volumes of the multiple water storage chambers and the combined volume of the multiple water storage chambers are adapted to multiple preset water volumes of the outer tub; the curved bottom surface is provided with multiple water outlets respectively connected to the multiple water storage chambers; the control method further includes: before the step of "controlling the water tank to supply water to the outer tub during the water inlet phase", obtaining the weight of the laundry to be washed; determining the preset water volume required for the outer tub based on the weight of the laundry; and determining the water storage chamber to supply water to the outer tub based on the preset water volume required for the outer tub.

[0016] In a washing machine and its control method provided by the present invention, a water tank is fixedly connected to the upper part of the outer drum, and the curved bottom surface formed by the water tank is adapted to the outside of the outer drum, and the water outlet provided on the curved bottom surface is connected to the water inlet provided on the upper part of the outer drum. In this way, water can be supplied to the outer drum through the water tank during the water inlet phase, so that the water inlet time of the washing machine under different water pressure conditions is basically consistent, thereby ensuring accurate washing time and greatly shortening the water inlet time required before washing. In addition, after the washing machine enters the washing phase, the water supply pipe can be controlled to replenish water to the water tank, so that the water tank and the water inside it can act as a counterweight during the dehydration phase to reduce the vibration and noise generated by the high-speed rotation of the inner drum, which is beneficial for reducing the counterweight of the washing machine itself and facilitating the transportation of the washing machine.

[0017] Furthermore, in a washing machine and control method provided by the present invention, multiple water storage chambers are provided within the water tank, and the volumes of the individual and combined water storage chambers are adapted to multiple preset water volumes for the outer drum. Accordingly, multiple water outlets are provided on the curved bottom surface, communicating with each of the multiple water storage chambers. Furthermore, before controlling the water tank to supply water to the outer drum during the water inlet phase, the preset water volume required for the outer drum can be determined based on the weight of the laundry, and the water storage chamber to be supplied can be determined. This allows control of the water volume supplied to the outer drum to be achieved without requiring a water volume sensor to obtain a real-time water volume signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The disclosure of the present invention will be more easily understood with reference to the accompanying drawings. Those skilled in the art will readily appreciate that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. Furthermore, similar numbers in the figures represent similar components. The washing machine and control method of the present invention will be described below with reference to the accompanying drawings and in conjunction with a drum washing machine. In the accompanying drawings:

[0019] Figure 1 Schematic diagram of the structure of the washing machine of this embodiment;

[0020] Figure 2 is a top view of the outer drum of the washing machine of this embodiment;

[0021] Figure 3 Schematic diagram of the main flow of the control method of the washing machine of this embodiment;

[0022] Figure 4 Detailed flowchart of the control method of the washing machine of this embodiment.

[0023] Reference Signs List

[0024] 1-outer cylinder; 11-fixed tube; 12-hanging spring; 13-damper; 14-lower counterweight; 15-hanging ear;

[0025] 2-water tank; 21-solenoid reversing valve;

[0026] 3- detergent dispensing box; 31- water inlet pipe; 32- water supply pipe;

[0027] 4- Casing. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0029] It should be noted that in the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that the device or element described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0031] In order to solve the above-mentioned problems in the prior art, namely, to solve the problem that the water inlet time of the existing washing machine is uncontrollable, resulting in inaccurate remaining washing time, and the problem that the water inlet time is long when the water pressure is low, resulting in a prolonged washing cycle, and the problem that the washing machine is heavy and makes it difficult to carry the washing machine, this embodiment provides a washing machine and a control method thereof.

[0032] First, in a washing machine provided in this embodiment, as Figure 1 and Figure 2 As shown, the washing machine is a front-opening type, comprising an outer tub 1 and a water tank 2 fixedly connected to the upper portion of the outer tub 1. The curved bottom surface formed by the water tank 2 is adapted to the exterior of the outer tub 1; and the water outlet provided on the curved bottom surface is connected to the water inlet provided on the upper portion of the outer tub 1.

[0033] For example, Figure 1 The front-loading washing machine shown is a drum washing machine, wherein a motor is connected to the rear end of an outer drum 1, and an inner drum is connected to the output shaft of the motor. During the washing and dehydration stages, the motor drives the inner drum to rotate along its own axis relative to the outer drum 1.

[0034] The curved bottom surface formed by the water tank 2 is adapted to the outside of the outer tube 1, which can make the connection between the water tank 2 and the outer tube 1 tighter, and the counterweight of the water tank 2 loaded on the outer tube 1 is more evenly distributed on the upper part of the water tank 2, thereby better reducing the vibration and noise of the outer tube 1.

[0035] This embodiment, by providing the above-mentioned washing machine, can supply water to the outer drum 1 through the water tank 2 during the water filling phase, ensuring that the water filling time of the washing machine is substantially consistent under different water pressure conditions, thereby ensuring accurate washing time and greatly shortening the water filling time required before washing. Furthermore, after the washing machine enters the washing phase, the water filling pipe 32 can be controlled to replenish the water tank 2. Therefore, the water tank 2 and the water therein can act as a counterweight during the spin phase, reducing the vibration and noise generated by the high-speed rotation of the inner drum. This helps to reduce the counterweight of the washing machine itself, thereby facilitating its transportation.

[0036] As a preferred implementation of the above-mentioned washing machine provided in this embodiment, a plurality of water storage chambers are provided in the water tank 2, and the volumes of the respective water storage chambers and the volume formed by their combination are adapted to the multiple preset water volumes of the outer drum 1; and a plurality of water outlets are provided on the arc-shaped bottom surface, which are respectively connected to the plurality of water storage chambers.

[0037] For example, the water tank 2 may be provided with three water storage chambers with capacities of 5 liters, 7.5 liters, and 10 liters, respectively. Thus, the water storage chambers themselves and the combination of the multiple water storage chambers can satisfy the preset water consumption of the outer drum 1 in seven capacities: 5 liters, 7.5 liters, 10 liters, 12.5 liters, 15 liters, 17.5 liters, and 22.5 liters.

[0038] At the same time, a washing machine wash cycle generally includes two rinses and one main wash phase, and the water consumption in the rinse and main wash phases is the same. The above capacity of the water tank 2 provided in this embodiment has exceeded the preset water consumption of most washing machines and can fully meet the use requirements of all programs.

[0039] In this way, before the water tank 2 is controlled to supply water to the outer drum 1 during the water inlet stage, the preset water volume required for the outer drum 1 can be determined according to the weight of the laundry to be washed to determine the water storage chamber that needs to supply water to the outer drum 1. Therefore, the water supply to the outer drum 1 can be controlled without obtaining a water volume signal supplied to the outer drum 1 in real time through a water volume sensor.

[0040] As a preferred implementation of the washing machine provided in this embodiment, fixed pipes 11 are respectively provided on the multiple water inlets of the outer tub 1 ; the outer tub 1 is connected to the multiple water outlets on the arc-shaped bottom surface through the multiple fixed pipes 11 .

[0041] It is understood that by providing the fixing tube 11 on the outer tube 1, the fixing tube 11 not only enables the outer tube 1 to be plugged into the water tank 2, but also enables communication between the water tank 2 and the outer tube 1. In addition, a valve can be provided between the fixing tube 11 and the water outlet on the curved bottom surface of the water tank 2, and the valve can be used to control the water in the corresponding water storage chamber to enter the outer tube 1.

[0042] As a preferred implementation of the above-mentioned washing machine provided in this embodiment, it also includes a water level sensor (not shown in the figure); the water level sensor includes a base and a connecting wire and two probes fixedly connected to the base; the end of the probe close to the base is provided with hydrophobic rubber, and the end of the probe away from the base is a metal detection end; a socket is provided on the top of each water storage chamber; the two probes of the water level sensor extend into the water storage chamber through the socket.

[0043] It is understood that a water level sensor is provided for each water storage chamber to independently detect the water level in each water storage chamber. When the two probes of the water level sensor simultaneously contact water, they conduct electricity and generate an electrical signal. When the water level in the water storage chamber drops below the level of the two probes, the electrical signal is cut off. In this way, the purpose of water level detection can be achieved through this conductive signal. In addition, the hydrophobic rubber provided at the end of the probe also seals the jack of the water level sensor probe after it is inserted into the water storage chamber. When the water level in the water storage chamber drops, the moisture on the hydrophobic rubber will quickly flow away, and there will be no false triggering caused by residual moisture causing conductivity.

[0044] As a preferred implementation of the above-mentioned washing machine provided in this embodiment, it also includes a detergent dispensing box 3, the inlet of the detergent dispensing box 3 is connected to a water inlet pipe 31, and the outlet of the detergent dispensing box 3 is provided with a water supply pipe 32 for supplying water to the water tank 2.

[0045] For example, the detergent dispenser 3 is used to dispense detergent, softener, conditioner, and other substances. Tap water can enter the detergent dispenser 3 through the water inlet pipe 31, flushing the substances in the detergent dispenser 3 into the water tank 2 through the water supply pipe 32. When the water tank 2 needs to be replenished, tap water can be directly connected to the water inlet pipe 31 connected to the detergent dispenser 3 to replenish the water tank 2. It is understood that each water storage chamber of the water tank 2 can also be connected to an independent water supply pipe connected to the water inlet pipe 31.

[0046] It is understood that a solenoid reversing valve 21 can be provided on the water supply pipe 32 to control which water storage chamber is replenished, and the electrical signal generated by the water level sensor can be used to determine whether the water in each water storage chamber has reached the set water level. Furthermore, flushing the material to be added into the water tank 2 first and then into the outer drum 1 can more easily ensure that the material is mixed evenly before contacting the clothes, thereby improving the washing effect and preventing burns on the clothes.

[0047] As a preferred implementation of the above-mentioned washing machine provided in this embodiment, the washing machine further includes a hanging spring 12 , one end of the hanging spring 12 is connected to the casing 4 of the washing machine and the other end is connected to the outer tub 1 .

[0048] like Figure 1 and 2 As shown, a hanging ear 15 is provided on each side of the outer cylinder 1 , and each hanging ear 15 is connected to the upper part of the housing 4 through a hanging spring 12 , thereby playing a role in reducing vibration of the outer cylinder 1 .

[0049] As an optional embodiment, the washing machine of this embodiment further includes a damper 13, one end of the damper 13 is connected to the bottom end of the housing 4 and the other end is connected to the outer tub 1. Figure 1 As shown, in this embodiment, a damper 13 is provided on each side of the outer tube 1. It is understood that the damper 13 can be used to slightly support the outer tube 1 and play a damping role. The damper 13 cooperates with the hanging spring 12 to achieve a better vibration reduction effect on the outer tube 1.

[0050] As an optional embodiment, the rear end of the outer cylinder 1 is provided with a lower counterweight 14. It is understood that the lower counterweight 14 can be Figure 1 The arc-shaped plate shown can be fixed to the rear end of the outer cylinder 1 by bolts or welding.

[0051] It is understood that the lower counterweight 14 increases the weight of the outer drum 1, lowers the center of gravity, and reduces the influence of clothing inertia, making the washing machine more stable during operation. In this embodiment, the water volume in the water tank 2 above the outer drum 1 can reach up to 22.5 liters, or 22.5 kg, which is heavier than a conventional counterweight (approximately 10-15 kg). Therefore, the lower counterweight 14 is smaller in size and weight compared to existing washing machines.

[0052] As a preferred embodiment of the washing machine provided in this embodiment, the water tank 2 comprises a body and a lid; the body and lid are connected via a slot and a snap-fit connection. It is understood that the socket provided on the top of the water tank 2 described above in this embodiment can also be provided on the lid. This also facilitates disassembly, assembly, and cleaning of the water tank 2.

[0053] Then, this embodiment also provides a control method for a washing machine, which is a front-loading washing machine. The washing machine includes an outer drum 1 and a water tank 2 fixedly connected to the upper part of the outer drum 1. The arc-shaped bottom surface formed by the water tank 2 is adapted to the outside of the outer drum 1; and the water outlet provided on the arc-shaped bottom surface is connected to the water inlet provided on the upper part of the outer drum 1; Figure 3 and Figure 4 As shown, the control method includes:

[0054] S1, controlling the water tank 2 to supply water to the outer tube 1 during the water inlet stage;

[0055] S2. When the water inlet stage ends and the washing machine enters the washing stage, the water supply pipe 32 is controlled to supply water to the water tank 2.

[0056] It will be appreciated that the control method for a washing machine provided in this embodiment can supply water to the outer drum 1 via the water tank 2 during the water inlet phase, ensuring that the water inlet time is substantially consistent under different water pressure conditions, thereby ensuring accurate washing time and significantly shortening the water inlet time required before washing. Furthermore, after the washing machine enters the wash phase, the water inlet pipe 32 can be controlled to replenish the water tank 2. This allows the water tank 2 and the water therein to act as a counterweight during the spin phase, reducing the vibration and noise generated by the high-speed rotation of the inner drum. This also facilitates transport of the washing machine by reducing its own counterweight.

[0057] As a preferred implementation of the above control method provided in this embodiment, a plurality of water storage chambers are provided in the water tank 2, and the volumes of the plurality of water storage chambers and the volume formed by their combination are adapted to the plurality of preset water volumes of the outer cylinder 1; a plurality of water outlets are provided on the arc-shaped bottom surface, which are respectively connected to the plurality of water storage chambers; Figure 4 As shown, before step S1, the control method further includes:

[0058] S101, obtaining the weight of the laundry to be washed;

[0059] S102, determining a preset water volume required by the outer drum 1 according to the weight of the laundry;

[0060] S103 , determining the water storage chamber that needs to supply water to the outer tube 1 according to the preset water consumption required by the outer tube 1 .

[0061] It can be understood that in the control method of a washing machine provided in this embodiment, before controlling the water tank 2 to supply water to the outer drum 1 during the water inlet stage, the preset water volume required for the outer drum 1 is determined according to the weight of the laundry to be washed to determine the water storage chamber that needs to supply water to the outer drum 1, thereby realizing the control of the water supply to the outer drum 1 without the need to obtain the water volume signal supplied to the outer drum 1 in real time through the water volume sensor.

[0062] Of course, the above-mentioned replaceable implementations, as well as the replaceable implementations and the preferred implementations, can be used in a cross-functional manner to combine new implementations to suit more specific application scenarios.

[0063] It should be noted that although the detailed steps of the method of the present invention are described in detail above, those skilled in the art can combine, split and change the order of the above steps without departing from the basic principles of the present invention. The modified technical solution does not change the basic concept of the present invention and therefore falls within the scope of protection of the present invention.

[0064] It should be understood by those skilled in the art that the control method of the washing machine provided in this embodiment can be stored as a program in a computer-readable storage medium. The storage medium includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute some steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk. Processors include but are not limited to CPLD / FPGA, DSP, ARM processor, MIPS processor, etc. In order to unnecessarily obscure the embodiments of the present disclosure, these well-known structures are not shown in the accompanying drawings.

[0065] Furthermore, those skilled in the art will appreciate that although some embodiments described herein include certain features that are included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of the present invention and to form different embodiments. For example, in the claims of the present invention, any of the claimed embodiments may be used in any combination.

[0066] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A washing machine, the washing machine being a front-loading type, characterized in that: The washing machine includes an outer drum and a water tank fixedly connected to the upper portion of the outer drum, wherein the curved bottom surface formed by the water tank is adapted to the exterior of the outer drum; The water outlet provided on the arc-shaped bottom surface is connected to the water inlet provided on the upper portion of the outer cylinder; The water tank is provided with a plurality of water storage chambers, and the volumes of the plurality of water storage chambers and the volume formed by their combination are adapted to the plurality of preset water volumes of the outer cylinder; The arc-shaped bottom surface is provided with a plurality of water outlets respectively connected with the plurality of water storage chambers; determining a preset amount of water required for the outer tub according to the weight of the laundry; The water storage chamber that needs to supply water to the outer cylinder is determined according to the preset water consumption required by the outer cylinder.

2. The washing machine according to claim 1, wherein The multiple water inlets of the outer cylinder are respectively provided with fixed pipes; The outer cylinder is plugged into the multiple water outlets on the arc-shaped bottom surface through the multiple fixing pipes.

3. The washing machine according to claim 1, wherein The water tank is provided with three water storage chambers with volumes of 5 liters, 7.5 liters and 10 liters respectively.

4. The washing machine according to claim 1, wherein It also includes a water level sensor; the water level sensor includes a base and a connecting wire and two probes fixedly connected to the base; The end of the probe close to the base is provided with hydrophobic rubber, and the end of the probe away from the base is a metal detection end; The top of each water storage chamber is provided with a socket; the two probes of the water level sensor pass through the socket and extend into the water storage chamber.

5. The washing machine according to claim 4, characterized in that The utility model further comprises a detergent dispensing box, wherein the inlet of the detergent dispensing box is connected to a water inlet pipe, and the outlet of the detergent dispensing box is connected to a water supply pipe for supplying water to the water tank.

6. The washing machine according to claim 4, characterized in that It also includes a hanging spring, one end of which is connected to the casing of the washing machine and the other end of which is connected to the outer drum; and / or, It also includes a damper, one end of which is connected to the bottom end of the housing and the other end of which is connected to the outer cylinder; and / or, The rear end of the outer cylinder is provided with a lower counterweight.

7. The washing machine according to claim 1, wherein The water tank comprises a tank body and a tank cover; the tank body and the tank cover are connected by means of a card slot and a buckle.

8. A method for controlling a front-loading washing machine, wherein: The washing machine includes an outer drum and a water tank fixedly connected to the upper portion of the outer drum, wherein the curved bottom surface formed by the water tank is adapted to the exterior of the outer drum; and a water outlet provided on the curved bottom surface is connected to a water inlet provided on the upper portion of the outer drum; the control method includes: During the water inlet stage, the water tank is controlled to supply water into the outer cylinder; When the water inlet stage ends and the washing machine enters the washing stage, controlling the water supply pipe to supply water to the water tank; the water tank is provided with a plurality of water storage chambers, and the volumes of the plurality of water storage chambers and the volume formed by their combination are adapted to the plurality of preset water volumes of the outer tub; the arc-shaped bottom surface is provided with a plurality of water outlets respectively connected to the plurality of water storage chambers; the control method further comprises: before the step of "controlling the water tank to supply water to the outer tub during the water inlet stage", Get the weight of the laundry; determining a preset amount of water required for the outer tub according to the weight of the laundry; The water storage chamber that needs to supply water to the outer cylinder is determined according to the preset water consumption required by the outer cylinder.

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