Control method of washing machine, control device of washing machine, washing machine, storage medium and computer program product

Abstract

The present disclosure relates to a control method of a washing machine, a control device of a washing machine, a washing machine, a storage medium and a computer program product, which can improve user experience.SOLUTION: The control method of the washing machine comprises: firstly closing the water inlet valve in response to determining that the water supply of the first washing drum is completed; and then closing the reversing valve when the water inlet valve is closed. The control method of the washing machine of the present disclosure improves the situation that the residual water in the water passage flows into the second washing drum after the water supply of the first washing drum is completed.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to the technical field of washing machines, and in particular to a method for controlling a washing machine, a control device for a washing machine, a washing machine, a storage medium, and a computer program product. [Background technology]

[0002] With the increasing variety of laundry scenarios, washing machines are no longer limited to the traditional single-tub washing machine, and some two-tub washing machines have emerged. In two-tub washing machines, the water supply valve controls the total water supply to the washing machine, and a directional control valve opens one of the tubs to realize the single-tub water supply process.

[0003] However, in the related art, after one tank is fully filled, the water flow may enter another tank, and if the other tank is not working, the water will flow out, affecting the user's experience. Summary of the Invention

[0004] To solve the problems existing in the related art, the present disclosure provides a method for controlling a washing machine, a control device for a washing machine, a washing machine, a storage medium, and a computer program product.

[0005] According to a first aspect of the embodiment of the present disclosure, there is provided a method for controlling a washing machine, the washing machine including a water supply valve and a directional control valve, the water supply valve being connected to a water supply port of the directional control valve via a first water passage, a first water outlet of the directional control valve being connected to a water supply port of a first washing tub via a second water passage, and a second water outlet of the directional control valve being connected to a water supply port of a second washing tub via a third water passage, the method for controlling the washing machine comprising: In response to determining that the supply of water to the first washing tub is completed, closing the water supply valve; and closing the directional control valve when the water supply valve is closed.

[0006] Optionally, when the water supply valve is closed, the step of closing the directional control valve includes: The method includes the step of closing the directional control valve in response to a first predetermined time period having elapsed since the water supply valve was closed.

[0007] Alternatively, when the water supply port of the first washing tub is higher than the water supply port of the second washing tub and the water supply valve is closed, the step of closing the directional control valve may include: executing a preset flush program in response to a first predetermined time period having elapsed since the water supply valve was closed; and closing the directional control valve in response to the execution of the preset flush program reaching a second predetermined time.

[0008] Alternatively, the water inlet of the first washing tub is higher than the water inlet of the second washing tub, and a flow meter is provided at one end of the second water passage close to the first water outlet, and when the water supply valve is closed, the step of closing the directional control valve includes: The method includes a step of closing the directional control valve when the water supply valve is closed and it is determined based on the detection result of the flow meter that there is no residual water in the second water passage.

[0009] Optionally, the method for controlling the washing machine comprises: The method further includes the step of determining that the water supply to the first washing tub has been completed in response to the water supply to the first washing tub reaching a target water level.

[0010] Optionally, the first washing tub is disposed diagonally above the second washing tub and away from the directional control valve, and the target water level is determined based on a rated water level required for the washing task performed by the first washing tub, the volume of the first washing tub, and the volume of the second water passage.

[0011] According to a second aspect of the present disclosure, there is provided a control device for a washing machine, comprising a water supply valve and a directional switching valve, wherein the water supply valve is connected to a water supply port of the directional switching valve via a first water passage, a first water outlet of the directional switching valve is connected to a water supply port of a first washing tub via a second water passage, and a second water outlet of the directional switching valve is connected to a water supply port of a second washing tub via a third water passage, a first control module configured to close the water supply valve in response to determining that the first wash tub has been filled with water; and a second control module configured to close the directional control valve when the water supply valve is closed.

[0012] According to a third aspect of the present disclosure, there is provided a washing machine, the washing machine including a water supply valve and a controller, The water supply valve is connected to a water supply port of a directional control valve through a first water passage, the first water outlet of the directional control valve is connected to a water supply port of a first washing tub through a second water passage, and the second water outlet of the directional control valve is connected to a water supply port of a second washing tub through a third water passage, The controller is communicatively connected to the water supply valve and the directional control valve, respectively, and includes a memory and a processor, a computer program is stored in the memory, and the processor executes the computer program in the memory to realize the steps of the washing machine control method according to the first aspect of the present disclosure.

[0013] According to a fourth aspect of the embodiment of the present disclosure, there is provided a computer-readable storage medium having a computer program stored therein, the computer program being capable of realizing the steps of the washing machine control method according to the first aspect of the present disclosure when executed by a processor.

[0014] According to a fifth aspect of an embodiment of the present disclosure, there is provided a computer program product including a computer program, which, when executed by a processor, realizes the steps of the washing machine control method according to the first aspect of the present disclosure.

[0015] In the invention according to the embodiment of the present disclosure, the washing machine first closes the water supply valve in response to determining that the water supply to the first washing tub is completed, and when the water supply valve is closed, closes the directional control valve, thereby continuously moving the residual water in the water channel within the time interval from the closure of the water supply valve to the closure of the directional control valve, thereby reducing the amount of water or energy of the residual water, and further reducing the amount of water flowing into the second washing tub after the directional control valve is closed, thereby improving the flow of residual water into the second washing tub and improving the user experience.

[0016] It should be noted that the above general and detailed descriptions are merely illustrative and are not intended to limit the present disclosure. [Brief explanation of the drawings]

[0017] The drawings herein are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure, and together with the specification serve to explain the principles of the present disclosure. [Figure 1] 1 is a structural schematic diagram of a washing machine according to an exemplary embodiment; [Figure 2] 2 is a flowchart of a method for controlling a washing machine according to an exemplary embodiment. [Figure 3] FIG. 10 is a structural schematic diagram of another washing machine according to an exemplary embodiment. [Figure 4] 1 is a structural block diagram of a control device of a washing machine according to an exemplary embodiment; [Figure 5] FIG. 1 is a block diagram of a washing machine according to one exemplary embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0018] Exemplary embodiments will now be described in detail, examples of which are illustrated in the drawings. In the following description, unless otherwise specified, the same reference numerals in different drawings refer to the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. These are merely examples of apparatus and methods consistent with some aspects of the present disclosure, as set forth in the claims.

[0019] In conventional two-tub washing machines, a water inlet valve and a directional control valve are used to control the water supply to the two tubs. When the water supply to one tub is completed, the water inlet valve and the directional control valve are closed, causing the remaining water in the water channel to flow into the other tub. This causes the other tub to stop working and the water to leak out, affecting the user experience.

[0020] 1, a two-tub split washing machine 100 includes a water inlet valve 101 and a directional control valve 102, in which the water inlet valve 101 is connected to the water inlet of the directional control valve 102 via a first water passage 103, the first water outlet of the directional control valve 102 is connected to the water inlet of a first washing tub 105 via a second water passage 104, and the second water outlet of the directional control valve 102 is connected to the water inlet of a second washing tub 107 via a third water passage 106. When the power supply of the directional control valve 102 is turned on, the first washing tub 105 is opened, and when the directional control valve 102 is closed, the directional control valve 102 is opened to the second washing tub 107.

[0021] Next, as shown in FIG. 1, in some embodiments, when supplying water to the first washing tub 105, the water supply valve 101 is opened and the directional control valve 102 is activated at the same time. At this time, the external water source enters the first washing tub 105 through the first water passage 103 and the second water passage 104. After the water supply to the first washing tub 105 is completed, the water supply valve 101 and the directional control valve 102 are usually closed synchronously. At this time, the directional control valve 102 allows the second washing tub 107 to be conducted, so that the remaining water in the first water passage 103 and the second water passage 104 enters the second washing tub 107 through the third water passage 106, which affects the user's experience.

[0022] To solve the above problems, the inventors have provided a washing machine control method, a washing machine control device, a washing machine, a storage medium and a computer program product as provided in the embodiments of the present disclosure, in which the washing machine first closes the water supply valve in response to determining that the water supply to the first washing tub is completed, and when the water supply valve is closed, closes the directional control valve, thereby causing the residual water in the water channel to continue moving within the time interval from the closing of the water supply valve to the closing of the directional control valve, thereby reducing the amount of water or energy of the residual water, and further reducing the amount of water flowing into the second washing tub after the directional control valve is closed, thereby improving the flow of residual water into the second washing tub and improving the user experience.

[0023] 1, the water inlet of the first washing tub is higher than the water inlet of the second washing tub, but in some embodiments, the water inlet of the first washing tub may be lower than the water inlet of the second washing tub, or may be positioned at approximately the same height as the water inlet of the second washing tub. Hereinafter, each embodiment of the present application will be described in detail with reference to the drawings.

[0024] 2, which is a flowchart of a control method for a washing machine according to an exemplary embodiment, the control method may be applied to a washing machine, the washing machine including a water inlet valve and a directional control valve, the water inlet valve being connected to the water inlet of the directional control valve via a first water passage, the first water outlet of the directional control valve being connected to the water inlet of a first washing tub via a second water passage, and the second water outlet of the directional control valve being connected to the water inlet of a second washing tub via a third water passage. As shown in FIG. 2, the control method for a washing machine includes the following steps:

[0025] S210: In response to determining that the water supply to the first washing tub is completed, closing the water supply valve. S220: A step of closing the directional control valve when the water supply valve is closed.

[0026] In some embodiments, the first washing tub may be the upper tub, and correspondingly, the second washing tub may be the lower tub. In some embodiments, the first tub may be the same size as the second tub. In some embodiments, the first washing tub may be a different size than the second washing tub; for example, the diameter of the first washing tub may be smaller than the diameter of the second washing tub, or the diameter of the first washing tub may be larger than the diameter of the second washing tub. In some embodiments, the first and second wash tubs can complete a washing task independently.

[0027] In the embodiment of the present disclosure, when the first washing tub is performing a washing task, if water needs to be added to the first washing tub, the water supply valve can be opened and the directional control valve can be activated. At this time, the external water source enters the first washing tub through the first water passage and the second water passage. At this time, since the directional control valve is in an activated state, the directional control valve does not allow the third water passage to be conducted, so water is not supplied to the second washing tub.

[0028] Water is supplied continuously, and at a certain time, when the washing machine determines that the first washing tub has been filled with water, the washing machine can close the water supply valve, and at this time, the external water source will not enter the first water channel. In this embodiment, in order to prevent residual water in the first and second water channels from entering the second washing tub, the water supply valve is not closed at the same time as the directional control valve is closed. Instead, the directional control valve is closed after the water supply valve is closed, so there is a certain time interval between the closing of the water supply valve and the closing of the directional control valve. During this time interval, the residual water in the first and second water channels continues to move, reducing the amount or energy of the residual water, and further reducing the amount of water flowing into the second washing tub after the directional control valve is closed, thereby preventing residual water from flowing into the second washing tub.

[0029] In some embodiments, after closing the directional control valve, a preset flush program can be executed, where the preset flush program may be, for example, a wash program, a rinse program, etc. This is determined based on the current actual wash cycle.

[0030] According to the above-mentioned washing machine control method, in response to determining that the water supply to the first washing tub is completed, the washing machine first closes the water supply valve, and when the water supply valve is closed, closes the directional control valve, thereby causing the residual water in the water channel to continue moving within the time interval from the closure of the water supply valve to the closure of the directional control valve, thereby reducing the amount of water or energy of the residual water, and further reducing the amount of water flowing into the second washing tub after the directional control valve is closed, thereby improving the flow of residual water into the second washing tub and improving the user experience.

[0031] In some embodiments, if the water supply valve is closed in step S220, closing the directional control valve may include the following steps.

[0032] In response to the first predetermined time being reached after the water supply valve is closed, the directional control valve is closed. In the embodiment of the present disclosure, when the water supply valve is closed and the directional control valve is activated, the residual water remaining in the first and second water conduits returns to a low level in the first water conduit due to the action of gravity, whether or not some or all of it flows into the first washing tub due to the action of a siphon or the like, and stabilizes. Therefore, even if the directional control valve is closed after a certain time, the residual water in the water conduits that has entered the second washing tub in the water conduits is significantly reduced. Therefore, in the embodiment of the present disclosure, when the water supply valve is closed and the directional control valve is activated, the time at which all of the residual water in the first and second water conduits flows into the first washing tub or returns to a low level and stabilizes can be tested in advance in an experimental environment, and the predetermined time can be recorded and written into the corresponding washing machine program. Thus, in the operating stage of the washing machine, the washing machine can close the directional control valve in response to the first predetermined time being reached after the water supply valve is closed.

[0033] For example, when a two-tub washing machine uses a bottom-box detergent dispenser, as shown in Figure 1, there is a water channel that is one level upward at one end of the first water channel near the directional control valve. In this case, when the water supply valve is closed and the directional control valve is activated, some of the remaining water in the first and second water channels will enter the first washing tub due to the action of a siphon or the like, while the other remaining water will return to a lower level in the first water channel due to its own gravity and stabilize. It is also possible that all of the remaining water in the first and second water channels will enter the first washing tub due to the action of a siphon or the like.

[0034] Furthermore, for example, even if a two-tub split washing machine uses an upper box type detergent dispensing method, there is a possibility that the first water passage does not have a water passage portion lower than the directional control valve. In this case, when the water supply valve is closed and the directional control valve is activated, some or all of the remaining water in the first and second water passages will enter the first washing tub due to the action of a siphon or the like, and this can improve the situation where the remaining water enters the second washing tub after the directional control valve is closed.

[0035] In some embodiments, if the water inlet of the first washing tub is higher than the water inlet of the second washing tub, and the water inlet valve is closed in step S220, the step of closing the directional control valve may include the following steps.

[0036] Executing a preset flush program in response to the water supply valve being closed for a first predetermined time. Closing the directional control valve in response to the execution of the preset flush program reaching a second predetermined time.

[0037] In the embodiments of the present application, after the water supply valve is closed and the first predetermined time has elapsed, it is considered that there may be water droplets in the second water passage that are difficult to remove by gravity or siphoning, etc., and because the water supply port of the first washing tub is higher than the water supply port of the second washing tub, water droplets may enter the second washing tub after the directional control valve is closed. After the water supply valve is closed and the first predetermined time has elapsed, the first washing tub may begin to execute a preset wash program, such as a wash or rinse program, so that the slight vibrations or pressure changes generated by the preset wash program can move the water droplets in the second water passage. Furthermore, when the execution of the preset wash program reaches a second predetermined time, the directional control valve can be closed.

[0038] In some embodiments, the water inlet of the first washing tub is higher than the water inlet of the second washing tub, and a flow meter is provided at one end of the second water passage close to the first water outlet. In this case, in step S220, if the water inlet valve is closed, the step of closing the directional control valve can include the following steps:

[0039] A step of closing the directional control valve when the water supply valve is closed and it is determined based on the detection result of the flow meter that there is no residual water in the second water passage.

[0040] In an embodiment of the present disclosure, the provided flow meter can detect whether there is residual water in the second water passage. If the water inlet of the first washing tub is higher than the water inlet of the second washing tub, if there is no residual water in the second water passage, it indicates that the residual water has already entered the first washing tub or has returned to a low level in the first water passage and stabilized. Therefore, the water inlet valve can be closed, and if it is determined based on the flow meter detection result that there is no residual water in the second water passage, the directional control valve can be closed.

[0041] In some embodiments, to determine whether the water supply to the first washing tub is complete, the method of the present disclosure may further include the following steps. A step of determining that the water supply to the first washing tub has been completed in response to the water supply to the first washing tub reaching the target water level.

[0042] In an embodiment of the present disclosure, the water level status during the water supply process of the first washing tub can be obtained, and when the water supply of the first washing tub reaches the target water level, it can be determined that the water supply of the first washing tub is complete.

[0043] In some embodiments, the target water level may be determined based on the currently running wash task in the first wash tub. For example, if the rated water required for the current wash task is 0.8 liters, the target water level may be set to a value corresponding to 0.8 liters of water.

[0044] Furthermore, the two-tub split washing machine to which the washing machine control method of the embodiment of the present disclosure is applied may be a washing machine with a two-tub layout as shown in FIG. 1, or a washing machine with another layout type.

[0045] 3, an embodiment of the present disclosure further provides another two-tub split washing machine 300, in which the components of the two-tub split washing machine 300 in FIG. 3 are the same as those of the two-tub split washing machine 100 in FIG. 1, and each includes a water supply valve 101, a directional control valve 102, a first water channel 103, a second water channel 104, a first washing tub 105, a third water channel 106, and a second washing tub 107. The difference lies in the layout of the components. As shown in FIG. 3, the first washing tub 105 is located diagonally above the second washing tub 107 and away from the directional control valve 102. In this case, the first washing tub 105 may be smaller than the second washing tub 107, and the first washing tub 105 may be used to wash small-sized clothes such as socks.

[0046] In such a two-tub layout, the second water channel 104 needs to partially straddle the second washing tub 107, which results in a long second water channel 104, a large amount of residual water in the second water channel 104, and a small size of the first washing tub 105. After the residual water in the second water channel 104 enters the first washing tub 105, the water level in the first washing tub 105 rises, and this water can be used to replenish the water in the first washing tub 105. Therefore, in order to ensure the accuracy of the water volume in the first washing tub 105 and avoid waste of water resources, in some embodiments, the target water level may be determined based on the rated water level required for the washing task performed by the first washing tub 105, the volume of the first washing tub, and the volume of the second water channel.

[0047] In the embodiment of the present disclosure, after the water supply valve is closed based on the volume of the second water passage, the volume of the residual water that can flow into the first washing tub is determined in advance from the second water passage, and the target water level is calculated based on the volume of the first washing tub, the volume of the residual water that can flow into the first washing tub, and the rated water level required for the washing task performed by the first washing tub, and written into the corresponding washing machine program. It can be understood that the target water level is lower than the rated water level required for the washing task performed by the first washing tub.

[0048] In some embodiments, the first tub may perform different washing tasks and require different nominal water levels.

[0049] 4 is a structural block diagram of a washing machine control device 400 according to an exemplary embodiment. Referring to FIG. 4, the washing machine control device 400 includes a first control module 410 and a second control module 420.

[0050] The first control module 410 is configured to close the water inlet valve in response to determining that the first tub has been filled with water. The second control module 420 is configured to close the directional control valve when the water inlet valve is closed.

[0051] In some embodiments, the second control module 420: A first control sub-module is included that is configured to close the directional control valve in response to the water supply valve being closed for a first predetermined time.

[0052] In some embodiments, the water inlet of the first washing tub is higher than the water inlet of the second washing tub, and the second control module 420 a second control sub-module configured to execute a preset flush program in response to the water inlet valve being closed for a first predetermined time; and a third control sub-module configured to close the directional control valve in response to execution of the preset flush program reaching a second predetermined time.

[0053] In some embodiments, the water inlet of the first washing tub is higher than the water inlet of the second washing tub, and a flow meter is provided at one end of the second water passage close to the first water outlet, and the second control module 420: and a fourth control sub-module configured to close the directional control valve when the water supply valve is closed and it is determined based on the detection result of the flow meter that there is no residual water in the second water passage.

[0054] In some embodiments, the washing machine controller 400 includes: The washing machine further includes a determination module configured to determine that the water supply to the first washing tub has been completed in response to the water supply to the first washing tub reaching a target water level.

[0055] In some embodiments, the first washing tub is located diagonally above the second washing tub and away from the directional control valve, and the target water level is determined based on the rated water level required for the washing task performed by the first washing tub, the volume of the first washing tub, and the volume of the second water channel.

[0056] Regarding the washing machine control device 400 in the above embodiment, the specific manner in which each module performs the operation is described in detail in the embodiment of the washing machine control method, and detailed description thereof will be omitted here.

[0057] The present disclosure further provides a washing machine including a water inlet valve and a controller. The water supply valve is connected to the water supply port of the directional control valve via a first water passage, the first water outlet of the directional control valve is connected to the water supply port of the first washing tub via a second water passage, and the second water outlet of the directional control valve is connected to the water supply port of the second washing tub via a third water passage.

[0058] The controller is communicatively connected to the water supply valve and the directional control valve, respectively, and includes a memory and a processor, the memory stores a computer program, and the processor executes the computer program in the memory to realize the steps of the washing machine control method of the present disclosure.

[0059] 5 is a block diagram of a washing machine 500 shown in accordance with one example embodiment. Referring to FIG. 5, the washing machine 500 includes one or more of a processing component 502, a memory 504, a power component 506, an audio component 508, a sensor component 510, a communication component 512, and a processor 514.

[0060] The processing component 502 typically controls the overall operation of the washing machine 500, such as the display, beeps, and various washing programs. The processing component 502 may include one or more processors 514 to execute instructions to complete all or part of the steps of the above-described washing machine control method. The processing component 502 may also include one or more modules to facilitate interaction between the processing component 502 and other components.

[0061] The memory 504 is configured to store various data to support the operation of the washing machine 500. Such data may include, for example, instructions, data, etc. of any application or method to operate on the washing machine 500. The memory 504 may be realized by any type of volatile or non-volatile storage device, such as a static random access memory (SRAM), an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a programmable read-only memory (PROM), a read-only memory (ROM), a magnetic memory, a flash memory, a magnetic disk, or an optical disk, or a combination thereof.

[0062] The power component 506 provides power to the various components of the washing machine 500. The power component 506 may include a power management system, one or more power sources, and other components related to the generation, management, and distribution of power for the washing machine 500.

[0063] The audio component 508 is configured to output and / or input audio signals. For example, the audio component 508 includes a microphone (MIC) configured to receive external audio signals when the washing machine 500 is in an operation mode, such as a call mode, a record mode, or a voice recognition mode. The received audio signals may be further stored in the memory 504 or transmitted via the communication component 512. In some embodiments, the audio component 508 further includes a speaker for outputting audio signals.

[0064] The sensor component 510 includes one or more sensors for providing various status assessments to the washing machine 500. In some embodiments, the sensor component 510 may further include a flow meter, an acceleration sensor, a pressure sensor, a vibration sensor, or a temperature sensor.

[0065] The communication component 512 is arranged to facilitate wired or wireless communication between the washing machine 500 and other devices. The washing machine 500 can access a wireless network based on a communication standard, such as WiFi, 4G, or 5G, or a combination thereof.

[0066] The present disclosure further provides a non-transitory computer-readable storage medium including computer program instructions that, when executed by a processor, implement the steps of the method for controlling a washing machine according to the present disclosure.

[0067] The present disclosure further provides a computer program product including a computer program executable by a programmable device, the computer program executing code portions for carrying out the above-described washing machine control method when executed by the programmable device.

[0068] Those skilled in the art will readily conceive other embodiments of the present disclosure after reading the specification and practicing the present disclosure. This application is intended to cover any variations, uses, or adaptations of the present disclosure, which variations, uses, or adaptations comply with the general principles of the present disclosure and include means well known in the art or commonly used in the art that are not disclosed in the present disclosure. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0069] The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit and scope of the present disclosure. The scope of the present disclosure is limited only by the appended claims.

[0070] It should be understood that the present disclosure is not limited to the exact construction described above and illustrated in the drawings, and that various modifications and variations can be made without departing from the scope of the present disclosure, which is limited only by the appended claims.

Claims

1. A method for controlling a washing machine, comprising: The washing machine includes a water supply valve and a directional control valve, the water supply valve being connected to a water supply port of the directional control valve through a first water passage, a first water outlet of the directional control valve being connected to a water supply port of a first washing tub through a second water passage, and a second water outlet of the directional control valve being connected to a water supply port of a second washing tub through a third water passage; The method for controlling the washing machine comprises: closing the water supply valve in response to determining that the water supply to the first wash tub has been completed; and closing the directional control valve when the water supply valve is closed.

2. When the water supply valve is closed, the step of closing the directional control valve includes:

2. The method of claim 1, further comprising the step of closing the directional control valve in response to a first predetermined time period having elapsed since the water supply valve was closed.

3. The water supply port of the first washing tub is higher than the water supply port of the second washing tub, and when the water supply valve is closed, the step of closing the directional control valve includes: executing a preset flush program in response to a first predetermined time period having elapsed since the water supply valve was closed; 2. The method of claim 1, further comprising the step of closing the directional control valve in response to the execution of the preset water wash program reaching a second predetermined time.

4. The water inlet of the first washing tub is higher than the water inlet of the second washing tub, and a flow meter is provided at one end of the second water passage close to the first water outlet, and when the water supply valve is closed, the step of closing the directional control valve includes:

2. The method for controlling a washing machine according to claim 1, further comprising the step of closing the directional control valve when the water supply valve is closed and it is determined based on the detection result of the flow meter that there is no residual water in the second water passage.

5. The method for controlling the washing machine comprises:

2. The method of claim 1, further comprising the step of determining that the water supply to the first washing tub is completed in response to the water supply to the first washing tub reaching a target water level.

6. 6. The method for controlling a washing machine according to claim 5, wherein the first washing tub is disposed diagonally above the second washing tub and away from the directional control valve, and the target water level is determined based on a rated water level required for the washing task performed by the first washing tub, the volume of the first washing tub, and the volume of the second water channel.

7. A control device for a washing machine including a water supply valve and a directional control valve, wherein the water supply valve is connected to a water supply port of the directional control valve through a first water passage, a first water outlet of the directional control valve is connected to a water supply port of a first washing tub through a second water passage, and a second water outlet of the directional control valve is connected to a water supply port of a second washing tub through a third water passage, a first control module configured to close the water supply valve in response to determining that the first tub has been filled with water; a second control module configured to close the directional control valve when the water supply valve is closed.

8. A washing machine, The washing machine includes a water supply valve and a controller; the water supply valve is connected to a water supply port of a directional control valve through a first water passage, the first water outlet of the directional control valve is connected to a water supply port of a first washing tub through a second water passage, the second water outlet of the directional control valve is connected to a water supply port of a second washing tub through a third water passage, and the water supply port of the first washing tub is higher than the water supply port of the second washing tub; The controller is communicatively connected to each of the water supply valve and the directional control valve, the controller includes a memory and a processor, a computer program is stored in the memory, and the processor executes the computer program in the memory to realize the steps of the washing machine control method described in any one of claims 1 to 6.

9. A computer-readable storage medium on which a computer program is stored, A computer-readable storage medium, characterized in that when the computer program is executed by a processor, the steps of the washing machine control method according to any one of claims 1 to 6 are realized.

10. 1. A computer program product comprising: A computer program product comprising a computer program, the computer program being capable of implementing the steps of the method for controlling a washing machine according to any one of claims 1 to 6 when the computer program is executed by a processor.

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