Self-cleaning method for washing machine and washing machine

Abstract

The present invention provides a self-cleaning method for a washing machine and a washing machine, by obtaining a cleaning parameter value, the cleaning parameter value is a cleaning parameter value detected after the washing machine last executed a washing program, and the cleaning parameter value includes the cumulative washing time, the number of washing program operations, the cumulative weighing value of clothes, and the cumulative number of non-sunny days within a preset number of days. If any parameter value in the cleaning parameter value is greater than or equal to the preset value, the washing machine is controlled to run a preset self-cleaning program. By analyzing the cumulative use parameters of the washing machine and the weather conditions, it is determined whether the washing machine is suitable for running a self-cleaning program. If the self-cleaning conditions are met, the washing machine automatically runs the self-cleaning program. And according to the functional type of the washing machine, a suitable prompting method can be determined to prompt the user to send an instruction. By running the self-cleaning program in the washing machine, the washing effect can be improved, the accumulation of pollutants in the washing machine can be effectively reduced, bacteria can be prevented from growing, the user's health can be maintained, and the service life of the washing machine can be extended.

Description

Technical Field

[0001] The present invention relates to the technical field of washing machine control, and in particular to a washing machine self-cleaning method and a washing machine. Background Art

[0002] At present, washing machines are very popular. They are cleaning appliances that use electrical energy to generate mechanical action to wash clothes. During actual working process, the impeller at the bottom of the washing tub is driven by a motor to rotate alternately clockwise and counterclockwise to make the clothes tumble and rotate, so that the clothes, the clothes and the impeller, and the clothes and the wall of the washing tub rub against each other, and the purpose of washing clothes is achieved with the help of detergent.

[0003] Due to the working mechanism of washing clothes in washing machines and the fact that the inner barrel of washing machines is in a humid and unventilated environment for a long time, after washing clothes for a long time, dirt will accumulate in the inner barrel, outer barrel and interlayer of the washing machine, breeding fungi and bacteria. In addition, the inner and outer barrels of most washing machines cannot be disassembled at will in terms of structural design. After using them for a period of time, not only will the washing effect of clothes be reduced, but it will also cause contamination to the clothes that have been put into the washing machine. In serious cases, it may even affect the structural safety of the washing machine and shorten the service life of the washing machine. In addition, the bacteria that breed in clothes and washing machines pose a great hidden danger to the health of users. Therefore, it is necessary to clean the washing machine regularly to remove the dirt in the barrel and ensure the cleanliness of the inner and outer barrels of the washing machine.

[0004] The intelligent self-cleaning function of the washing machine will determine whether the current state of the washing machine is suitable for the self-cleaning function. Performing intelligent self-cleaning at the appropriate time can minimize the accumulation of pollutants in the washing machine, prevent bacteria from growing, keep the washing machine dry and clean, and extend the service life of the washing machine. At present, the method for judging the cleanliness status of a washing machine is to judge whether it is suitable for the self-cleaning program based on the number of operating cycles of the washing machine. When the number of operating cycles reaches the preset number, the user is reminded to run the self-cleaning program. However, the current state of the washing machine cannot be accurately judged only by the number of operating cycles of the washing machine. For example, different washing programs have different washing times, different laundry weights, and different levels of moisture in the clothes due to weather conditions, all of which will affect the cleanliness of the washing machine. Summary of the invention

[0005] The present application provides a washing machine self-cleaning method and a washing machine to solve the problem that the judgment method for running a self-cleaning program in the prior art has low accuracy, which leads to poor washing effect and short service life of the washing machine.

[0006] In a first aspect, the present application provides a washing machine self-cleaning method, the method comprising:

[0007] Acquire a cleaning parameter value, where the cleaning parameter value is a cleaning parameter value detected after the washing machine last executed a washing program, and the cleaning parameter value includes a cumulative washing time, a number of washing program runs, a cumulative weighing value of clothes, and a cumulative number of non-sunny days within a preset number of days;

[0008] If any parameter value of the cleaning parameter values ​​is greater than or equal to a preset value, the washing machine is controlled to run a preset self-cleaning program.

[0009] In one implementation, the method further includes:

[0010] Detect the status of the self-cleaning program of the washing machine;

[0011] If it is in the on state, the washing machine is controlled to run the preset self-cleaning program;

[0012] If it is in the off state, a first prompt message is generated, and the first prompt message is used to prompt the user to send a self-cleaning instruction to control the washing machine to run a self-cleaning program according to the self-cleaning instruction.

[0013] In one implementation, the self-cleaning instruction includes a cleaning mode and working parameters and a working process of the cleaning mode.

[0014] In one implementation, the first prompt information includes a flashing prompt light, a voice prompt, and a remote communication prompt.

[0015] In one implementation, before the step of controlling the washing machine to run a preset self-cleaning program, the step further includes:

[0016] Detect the door lock status of the washing machine;

[0017] If the door lock state is a locked state, controlling the washing machine to run a preset self-cleaning program;

[0018] If the door lock state is an unlocked state, a second prompt message is generated, and the second prompt message is used to prompt the user to send a closing instruction for closing the door lock of the washing machine.

[0019] In one implementation, before the step of controlling the washing machine to run a preset self-cleaning program, the step further includes:

[0020] Check whether there is foreign matter in the washing tub;

[0021] If there is no foreign matter in the washing tub, the washing machine is controlled to run a preset self-cleaning program;

[0022] If there is a foreign object in the washing tub, a third prompt message is generated, and the third prompt message is used to prompt the user that there is a foreign object in the washing tub.

[0023] In one implementation, the step of detecting whether there is a foreign object in the washing tub includes:

[0024] Control the rotation of the washing tub to obtain the shaking amplitude of the washing tub within a preset time;

[0025] If the shaking amplitude is greater than or equal to the preset amplitude, it is determined that there is foreign matter in the washing tub.

[0026] In one implementation, the method further includes:

[0027] After controlling the washing machine to run a preset self-cleaning program, the cleaning parameter value is set to zero.

[0028] In one implementation, the step of obtaining the cumulative number of non-sunny days within a preset number of days includes:

[0029] Acquiring weather forecast information, where the weather forecast information is local weather forecast information acquired by the washing machine through connecting to an external network;

[0030] According to the weather forecast information, the cumulative number of non-sunny days within a preset number of days is counted.

[0031] In a second aspect, the present application provides a washing machine, comprising:

[0032] Box;

[0033] Motor and laundry tub;

[0034] A door cover and a door lock, wherein the door lock is in a locked state to lock the door cover when the washing machine is running;

[0035] The controller is configured as:

[0036] Acquire a cleaning parameter value, where the cleaning parameter value is a cleaning parameter value detected after the washing machine last executed a washing program, and the cleaning parameter value includes a cumulative washing time, a number of washing program runs, a cumulative weighing value of clothes, and a cumulative number of non-sunny days within a preset number of days;

[0037] If any parameter value of the cleaning parameter values ​​is greater than or equal to a preset value, the washing machine is controlled to run a preset self-cleaning program.

[0038] It can be seen from the above technical solution that the present application provides a self-cleaning method for a washing machine and a washing machine, the method comprising: obtaining a cleaning parameter value, the cleaning parameter value is a cleaning parameter value detected after the washing machine last executed a washing program, and the cleaning parameter value includes the cumulative washing time, the number of washing program runs, the cumulative weighing value of the clothes, and the cumulative number of non-sunny days within a preset number of days. If any parameter value of the cleaning parameter value is greater than or equal to the preset value, the washing machine is controlled to run the preset self-cleaning program. By analyzing the cumulative use parameters and weather conditions of the washing machine, it is determined whether the washing machine is suitable for running the self-cleaning program. If the self-cleaning conditions are met, the washing machine automatically runs the self-cleaning program. And according to the functional type of the washing machine, it can be determined that a suitable prompt method prompts the user to send an instruction. By running the self-cleaning program by the washing machine, the washing effect can be improved, the accumulation of pollutants in the washing machine can be effectively reduced, bacteria can be prevented from growing, the user's health can be maintained, and the service life of the washing machine can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0040] Figure 1 A flowchart of a washing machine self-cleaning method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Due to the working mechanism of washing clothes in a washing machine and the fact that the inner barrel of the washing machine is in a humid and unventilated environment for a long time, after washing clothes for a long time, dirt will accumulate in the inner barrel, outer barrel and interlayer of the washing machine, breeding fungi and bacteria. Therefore, it is necessary to clean the washing machine regularly to remove the dirt in the barrel and ensure the cleanliness of the inner and outer barrels of the washing machine. The current intelligent self-cleaning function of the washing machine is to judge whether it is suitable for the self-cleaning program based on the number of operating cycles of the washing machine. When the number of operating cycles reaches the preset number, the user is reminded to run the self-cleaning program. However, the current state of the washing machine cannot be accurately judged only by the number of operating cycles of the washing machine. For example, different washing times for different washing programs, different weights of laundry, and different humidity of clothes due to weather conditions will affect the cleanliness of the washing machine. If it is not cleaned for a long time, not only will the washing effect of the clothes be reduced, but it will also cause contamination to the clothes that have been put into the washing machine. In serious cases, it may even affect the structural safety of the washing machine and shorten the service life of the washing machine. In addition, the bacteria that grow in the clothes and the washing machine pose a great hidden danger to the health of users.

[0043] In order to solve the above problems, the present application provides a self-cleaning method for a washing machine and a washing machine, wherein the washing machine includes a housing, a motor, a washing tub, a door cover, a door lock and a controller, wherein the door lock is in a locked state to lock the door cover when the washing machine is running. When the washing machine runs a washing program, the controller controls the operation of the motor, and the motor drives the washing tub to rotate to achieve tumbling and rotation of the clothes, thereby achieving the purpose of washing the clothes clean. When the washing machine runs a washing program, the door lock is in a locked state to lock the door cover, so as to prevent the door cover from being opened when the washing tub is rotating at high speed, causing an accident. In this embodiment, the controller is configured to execute the self-cleaning method of the washing machine. Figure 1 As shown, the method comprises the following steps:

[0044] Acquire a cleaning parameter value, which is a cleaning parameter value detected after the washing machine last executed a washing program, and includes the cumulative washing time, the number of washing program runs, the cumulative weighing value of clothes, and the cumulative number of non-sunny days within a preset number of days. Among them, the cumulative washing time is the sum of the time of all washing programs after the last execution of the self-cleaning program, the number of washing program runs is the sum of the number of washing program runs after the last execution of the self-cleaning program, the cumulative weighing value of clothes is the total weight of the clothes washed after the last execution of the self-cleaning program, and the cumulative number of non-sunny days within the preset number of days is the number of non-sunny days within the preset number of days. For example, the cumulative number of non-sunny days within the preset number of days can be the cumulative number of non-sunny days before and after 15 days.

[0045] In this embodiment, after the washing machine has finished running the washing program, the controller retrieves the historical cleaning parameter values ​​stored in the washing machine, and calculates the current cleaning parameter values ​​of the washing machine based on the historical cleaning parameter values, and the cleaning parameter values ​​include the cumulative washing time, the number of washing program runs, the cumulative weighing value of the clothes, and the cumulative number of days that are not sunny within the preset number of days. For example, when the current washing program is finished, the cumulative washing time is added to the current washing time, the number of washing program runs is increased by one, and the cumulative weighing value of the clothes is added to the weight of the clothes washed this time. If the weather condition is not sunny, the cumulative number of days that are not sunny is increased by one.

[0046] After the controller obtains the cleaning parameter value of the washing machine, it can determine whether the washing machine currently meets the operating conditions for running the self-cleaning program based on the preset parameter values. If the operating conditions are met, the washing machine will automatically run the self-cleaning program. If the operating conditions are not met, no processing will be performed.

[0047] If any parameter value of the cleaning parameter values ​​is greater than or equal to a preset value, the washing machine is controlled to run a preset self-cleaning program.

[0048] In this embodiment, by comparing the obtained cleaning parameter value with the preset value, if any parameter value in the cleaning parameter value is greater than or equal to the preset value, it is considered that the washing machine meets the operating conditions for running the self-cleaning program. For example, the preset value of the cumulative washing time is 24 hours. If the cumulative washing time in the current cleaning parameter value of the washing machine is 25 hours, it is considered that the washing machine meets the operating conditions for running the self-cleaning program, and the controller can control the washing machine to run the preset self-cleaning program.

[0049] The present application determines whether the washing machine is suitable for running the self-cleaning program by analyzing the accumulated usage parameters and weather conditions of the washing machine, fully considers various factors that affect the cleanliness of the washing machine, improves the accuracy of the judgment method for running the self-cleaning program, ensures the cleanliness and washing effect of the washing machine, reduces the accumulation of pollutants in the washing machine, and extends the service life of the washing machine.

[0050] In some embodiments, when obtaining the cumulative number of non-sunny days within a preset number of days, the method further includes the following steps:

[0051] Acquire weather forecast information, where the weather forecast information is local weather forecast information acquired by the washing machine through connecting to an external network.

[0052] According to the weather forecast information, the cumulative number of non-sunny days within a preset number of days is counted.

[0053] In this embodiment, the washing machine obtains local weather forecast information through a wired or wireless connection to an external network, and counts the cumulative number of non-sunny days within a preset number of days based on the weather forecast information. Specifically, when the washing machine is used for the first time, the washing machine is connected to the external network, and the address of the location of the washing machine is set to obtain the weather forecast information of the location from the network.

[0054] In some embodiments, the washing machine determines the weather conditions of the day based on the local weather forecast information obtained, and retrieves the washing information stored in the washing machine that matches the weather conditions of the day based on the weather conditions. The washing information includes the washing program, program running time, operating parameters, etc., to provide the user with a suitable washing program.

[0055] In some embodiments, when the operating conditions for running the self-cleaning program are met, the controller can directly control the washing machine to run a preset self-cleaning program, or send a prompt message to the user, prompting the user to manually run the self-cleaning program.

[0056] Specifically, the method further comprises the following steps:

[0057] Check the status of the self-cleaning program of the washing machine.

[0058] If it is in the on state, the washing machine is controlled to run the preset self-cleaning program.

[0059] If it is in the off state, a first prompt message is generated, and the first prompt message is used to prompt the user to send a self-cleaning instruction to control the washing machine to run a self-cleaning program according to the self-cleaning instruction.

[0060] In this embodiment, when the washing machine meets the operating conditions for running the self-cleaning program, the controller detects whether the washing machine turns on the self-cleaning program self-running function. If it is detected that the self-cleaning program self-running function is in the turned-on state, the washing machine is controlled to run the preset self-cleaning program. If it is detected that the self-cleaning program self-running function is in the turned-off state, a first prompt information is generated, and the first prompt information is used to prompt the user to send a self-cleaning instruction. After receiving the self-cleaning instruction sent by the user, the washing machine is controlled to run the self-cleaning program according to the self-cleaning instruction.

[0061] In some embodiments, the self-cleaning instruction includes a cleaning mode and working parameters and a working process of the cleaning mode. The user can set the cleaning flushing mode, cleaning time, cleaning temperature, etc. according to actual needs.

[0062] In one implementation, the first prompt information includes a flashing prompt light, a voice prompt, and a remote communication prompt.

[0063] In this embodiment, the first prompt information may be one or more of a flashing prompt light, a voice prompt, or a remote communication prompt. For example, the prompt light may remain on or flash, and a prompt sound may be emitted. A voice may be broadcasted such as "whether to start the self-cleaning program". A notification message may also be sent to a specific smart terminal via remote communication.

[0064] It should be noted that the first prompt information can be set according to the needs of the user. For ordinary washing machines, that is, washing machines without remote communication control functions and voice control functions, the first prompt information can be a flashing prompt light, for example, a flashing LED light to prompt the user to run the self-cleaning program. The second prompt information and the third prompt information involved in the subsequent method steps of the embodiment of the present application can refer to the example of the first prompt information, and will not be repeated later.

[0065] In some embodiments, before the step of controlling the washing machine to run a preset self-cleaning program, the method further includes the following steps:

[0066] Check the door lock status of the washing machine.

[0067] If the door lock state is the locked state, the washing machine is controlled to run a preset self-cleaning program.

[0068] If the door lock state is an unlocked state, a second prompt message is generated, and the second prompt message is used to prompt the user to send a closing instruction for closing the door lock of the washing machine.

[0069] In this embodiment, before controlling the washing machine to run the self-cleaning program, the controller detects the door lock state of the washing machine. If the door lock state is locked, the washing machine can be controlled to run the self-cleaning program. If the door lock state is unlocked, a second prompt message is generated. When a closing instruction to close the door lock of the washing machine is received from the user, the door lock is controlled to be locked according to the closing instruction. Only when the door lock state is locked can the controller control the washing machine to run the self-cleaning program to avoid the door cover being opened when the washing machine is running.

[0070] In some embodiments, when detecting the door lock status of the washing machine, first detect whether the door cover is closed. If the door cover is detected to be closed, detect whether the door lock is locked. If the door lock is unlocked, the controller can control the door lock to lock, and generate a second prompt message when the door lock fails to lock, or control the door lock to lock again, and generate a second prompt message when the number of controls reaches a preset number and the door lock still fails to lock successfully.

[0071] In some embodiments, the washing machine also includes a switch detection device, which is a switch sensor. By setting the switch sensor, it is determined whether the door lock is locked. The switch sensor can be triggered to generate a switch signal when the door lock is locked or unlocked, and sent to the controller. The controller determines the door lock status based on the switch signal.

[0072] In some embodiments, before the step of controlling the washing machine to run a preset self-cleaning program, the method further includes the following steps:

[0073] Check whether there is any foreign object in the washing tub.

[0074] If there is no foreign matter in the washing tub, control the washing machine to run a preset self-cleaning program.

[0075] If there is a foreign object in the washing tub, a third prompt message is generated, and the third prompt message is used to prompt the user that there is a foreign object in the washing tub.

[0076] In this embodiment, before controlling the washing machine to run the self-cleaning program, the controller detects whether there is foreign matter in the washing tub. If there is no foreign matter in the washing tub, the washing machine can be controlled to run the self-cleaning program. If there is foreign matter in the washing tub, a third prompt message is generated to prompt the user that there is foreign matter in the washing tub. After the user cleans the foreign matter, the washing tub is re-detected. Only when it is detected that there is no foreign matter in the washing tub, the controller can control the washing machine to run the self-cleaning program to avoid the presence of foreign matter in the washing tub, which reduces the cleaning effect when running the self-cleaning program.

[0077] In some embodiments, in order to detect the washing tub, according to the principle of the washing tub rotating, when the washing tub rotates, the items in the washing tub and the washing tub contact and rub against each other. Therefore, by detecting the shaking amplitude of the washing tub when the washing tub rotates, it can be determined whether there is a foreign object in the washing tub according to the shaking amplitude. Specifically, the method further includes the following steps:

[0078] The washing tub is controlled to rotate to obtain the shaking amplitude of the washing tub within a preset time.

[0079] If the shaking amplitude is greater than or equal to the preset amplitude, it is determined that there is foreign matter in the washing tub.

[0080] In this embodiment, when it is detected that the door lock state of the washing machine is in the locked state, the controller controls the washing tub to rotate for a preset time, obtains the shaking amplitude of the washing tub within the preset time, and if the shaking amplitude is less than the preset amplitude, the washing machine can be controlled to run a self-cleaning program. If the shaking amplitude is greater than or equal to the preset amplitude, a third prompt message is generated to prompt the user that there is a foreign object in the washing tub. After the user cleans the foreign object, a self-cleaning instruction can be sent. In response to the self-cleaning instruction, the controller detects the door lock state of the washing machine. If the door lock state is in the locked state, the controller controls the washing tub to rotate for a preset time, obtains the shaking amplitude of the washing tub within the preset time, and if the shaking amplitude is less than the preset amplitude, the washing machine is controlled to run a self-cleaning program.

[0081] In some embodiments, if the shaking amplitude is greater than or equal to the limit amplitude, it can be considered that the washing machine has a malfunction or a child or other creature has fallen into the washing tub. The controller controls the door lock of the washing machine to open and send an alarm message to avoid washing accidents.

[0082] In some embodiments, the washing machine further includes a foreign object detection device, which is connected to the controller and is used to detect the shaking amplitude of the washing tub within a preset time, and send the detected shaking amplitude to the controller, and the controller determines whether there is a foreign object in the washing tub according to the shaking amplitude and the preset amplitude. In specific applications, the foreign object detection device can be a sensor installed in the washing machine body, which obtains the shaking amplitude of the washing tub by detecting the swing of the motor in the washing machine.

[0083] In summary, the present application provides a self-cleaning method for a washing machine and a washing machine, the method comprising: obtaining a cleaning parameter value, the cleaning parameter value being a cleaning parameter value detected after the washing machine last executed a washing program, the cleaning parameter value including the cumulative washing time, the number of washing program runs, the cumulative weighing value of the clothes, and the cumulative number of non-sunny days within a preset number of days. If any parameter value of the cleaning parameter value is greater than or equal to the preset value, the washing machine is controlled to run a preset self-cleaning program. By analyzing the cumulative use parameters and weather conditions of the washing machine, it is determined whether the washing machine is suitable for running a self-cleaning program. If the self-cleaning conditions are met, the washing machine automatically runs the self-cleaning program. And according to the functional type of the washing machine, a suitable prompting method can be determined to prompt the user to send an instruction. By running a self-cleaning program in the washing machine, the washing effect can be improved, the accumulation of pollutants in the washing machine can be effectively reduced, bacteria can be prevented from growing, the user's health can be maintained, and the service life of the washing machine can be extended.

[0084] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A washing machine self-cleaning method, characterized in that: The method comprises: Acquire a cleaning parameter value, where the cleaning parameter value is a cleaning parameter value detected after the washing machine last executed a washing program, and the cleaning parameter value includes a cumulative washing time, a number of washing program runs, a cumulative weighing value of clothes, and a cumulative number of non-sunny days within a preset number of days; Acquiring weather forecast information, where the weather forecast information is local weather forecast information acquired by the washing machine through connecting to an external network; According to the weather forecast information, the cumulative number of non-sunny days within a preset number of days is counted; If any parameter value of the cleaning parameter values ​​is greater than or equal to a preset value, the washing machine is controlled to run a preset self-cleaning program.

2. The washing machine self-cleaning method according to claim 1, characterized in that: The method further comprises: Detect the status of the self-cleaning program of the washing machine; If it is in the on state, the washing machine is controlled to run the preset self-cleaning program; If it is in the off state, a first prompt message is generated, and the first prompt message is used to prompt the user to send a self-cleaning instruction to control the washing machine to run a self-cleaning program according to the self-cleaning instruction.

3. The washing machine self-cleaning method according to claim 2, characterized in that: The self-cleaning instruction includes a cleaning mode and working parameters and a working process of the cleaning mode.

4. The washing machine self-cleaning method according to claim 2, characterized in that: The first prompt information includes flashing prompt light, voice prompt, and remote communication prompt.

5. The washing machine self-cleaning method according to claim 1, characterized in that: The step of controlling the washing machine to run a preset self-cleaning program also includes: Detect the door lock status of the washing machine; If the door lock state is a locked state, controlling the washing machine to run a preset self-cleaning program; If the door lock state is an unlocked state, a second prompt message is generated, and the second prompt message is used to prompt the user to send a closing instruction for closing the door lock of the washing machine.

6. The washing machine self-cleaning method according to claim 5, characterized in that: The step of controlling the washing machine to run a preset self-cleaning program also includes: Check whether there is foreign matter in the washing tub; If there is no foreign matter in the washing tub, the washing machine is controlled to run a preset self-cleaning program; If there is a foreign object in the washing tub, a third prompt message is generated, and the third prompt message is used to prompt the user that there is a foreign object in the washing tub.

7. The washing machine self-cleaning method according to claim 6, characterized in that: The steps for detecting whether there is foreign matter in the washing tub include: Control the rotation of the washing tub to obtain the shaking amplitude of the washing tub within a preset time; If the shaking amplitude is greater than or equal to the preset amplitude, it is determined that there is foreign matter in the washing tub.

8. The washing machine self-cleaning method according to claim 1, characterized in that: The method further comprises: After controlling the washing machine to run a preset self-cleaning program, the cleaning parameter value is set to zero.

9. A washing machine, applied to the washing machine self-cleaning method according to any one of claims 1 to 8, characterized in that: include: Box; Motor and laundry tub; A door cover and a door lock, wherein the door lock is in a locked state to lock the door cover when the washing machine is running; The controller is configured as: Acquire cleaning parameter values, which are cleaning parameter values ​​detected by the washing machine after the most recent washing program was executed, and which include cumulative washing time, number of washing program runs, cumulative laundry weight, and cumulative number of non-sunny days within a preset number of days; acquire weather forecast information, which is local weather forecast information acquired by the washing machine by connecting to an external network; According to the weather forecast information, the cumulative number of non-sunny days within a preset number of days is counted; If any parameter value of the cleaning parameter values ​​is greater than or equal to a preset value, the washing machine is controlled to run a preset self-cleaning program.

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