Washing control method applied to dish washing machine, controller and dish washing machine

Abstract

The invention provides a washing control method applied to a dish-washing machine, a controller and the dish-washing machine, and relates to the field of electricity. The method comprises the steps that in the washing treatment process of the dish-washing machine, a controller can obtain working parameters of a washing pump of the dish-washing machine in real time. The controller can judge whether the working parameters meet a first preset condition or not according to the working parameters. If yes, the controller can determine that the liquid level of the water tank of the current dishwasher is smaller than the first preset liquid level. The controller can control the washing pump of the dish-washing machine to stop working and wait for water return of the water tank. The controller can control the dish-washing machine to perform washing treatment when determining that the liquid level of the water tank is greater than or equal to the second preset liquid level. According to the method, the washing efficiency of the washing pump is improved.

Description

Technical Field

[0001] The present application relates to the electrical field, and in particular to a washing control method, a controller and a dishwasher applied to a dishwasher. Background Art

[0002] As the quality of life continues to improve, more and more families tend to use dishwashers to clean dishes efficiently. Dishwashers achieve an automated cleaning process by precisely spraying washing liquid onto the surface of dishes. Therefore, there is an urgent need for a control solution that can improve the energy efficiency of dishwashers, thereby further promoting an energy-saving and environmentally friendly lifestyle. Summary of the invention

[0003] The present application provides a washing control method, a controller and a dishwasher applied to a dishwasher, so as to solve the problem of how to improve the energy efficiency of the dishwasher.

[0004] In a first aspect, the present application provides a washing control method applied to a dishwasher, comprising:

[0005] During the washing process of the dishwasher, if it is determined that the working parameters of the washing pump of the dishwasher meet the first preset condition, it is determined that the liquid level of the water tank in the dishwasher is less than the first preset liquid level, and the washing pump is controlled to stop working;

[0006] When it is determined that the liquid level of the water tank is greater than or equal to a second preset liquid level, the washing pump is controlled to operate so that the dishwasher performs a washing process; wherein the second preset liquid level is greater than the first preset liquid level.

[0007] In a second aspect, the present application provides a washing control device applied to a dishwasher, comprising:

[0008] A first processing module, configured to determine that a liquid level in a water tank of the dishwasher is less than a first preset liquid level and control the washing pump to stop working if it is determined that an operating parameter of the washing pump of the dishwasher meets a first preset condition during the washing process of the dishwasher;

[0009] The second processing module is used to control the washing pump to work so that the dishwasher performs washing processing when it is determined that the liquid level of the water tank is greater than or equal to a second preset liquid level; wherein the second preset liquid level is greater than the first preset liquid level.

[0010] In a third aspect, the present application provides a controller, including: a memory and a processor;

[0011] The memory is used to store a computer program; the processor is used to execute the washing control method applied to the dishwasher in the first aspect and any possible design of the first aspect according to the computer program stored in the memory.

[0012] In a fourth aspect, the present application provides a dishwasher, which is provided with a washing pump, a plurality of liquid level detectors, and a controller in the third aspect and any possible design of the third aspect.

[0013] In a fifth aspect, the present application provides a computer-readable storage medium, in which a computer program is stored. When at least one processor of a controller executes the computer program, the controller executes the washing control method applied to a dishwasher in the first aspect and any possible design of the first aspect.

[0014] In a sixth aspect, the present application provides a computer program product, which includes a computer program. When at least one processor of a controller executes the computer program, the controller executes the washing control method applied to a dishwasher in the first aspect and any possible design of the first aspect.

[0015] The washing control method, controller and dishwasher provided in the present application control the washing pump to stop working when the working parameter of the washing pump meets the first preset condition. The controller can re-control the washing pump to work after waiting for the water tank to recover from less than the first preset liquid level to the second preset liquid level, thereby ensuring that the washing pump can perform the washing operation when there is sufficient washing liquid in the water tank, thereby reducing the probability of ineffective washing, improving the washing efficiency of the washing pump and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A flowchart of a washing control method applied to a dishwasher provided in an embodiment of the present application;

[0018] Figure 2 A flowchart of a washing control method applied to a dishwasher provided in an embodiment of the present application;

[0019] Figure 3 A flowchart of a washing control method applied to a dishwasher provided in an embodiment of the present application;

[0020] Figure 4 A flowchart of a washing control method applied to a dishwasher provided in an embodiment of the present application;

[0021] Figure 5A flowchart of a washing control method applied to a dishwasher provided in an embodiment of the present application;

[0022] Figure 6 A schematic diagram of the structure of a washing control device applied to a dishwasher provided in one embodiment of the present application;

[0023] Figure 7 A schematic diagram of the hardware structure of a controller provided in one embodiment of the present application;

[0024] Figure 8 A schematic diagram of the hardware structure of a dishwasher provided in one embodiment of the present application;

[0025] Fig. 9 A schematic diagram of the hardware structure of a dishwasher provided in one embodiment of the present application.

[0026] Reference numerals

[0027] 700: controller; 800: dishwasher; 811: spray arm; 810: washing pump; 820: liquid level detector; 821: float; 822: micro switch; 840: sink; 841: water cup; 842: filter; 850: speed detector; 851: detection module; 852: signal output module; 860: drain pump; 870: water inlet valve. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] However, as pollutants continue to accumulate, they will clog the filter, slowing down the return of the washing liquid in the sink. As the water returns slowly, the water volume in the sink does not accumulate enough, and the washing pump may become hollow during the washing process, causing the spray water pressure to drop, the spray arm speed to drop, or even stop. When the spray water pressure and spray arm speed are too low, the washing liquid's rinsing effect during the dishwashing process will drop rapidly, resulting in ineffective washing and wasted energy.

[0030] The main reason for this energy waste is that the washing pump is always in working condition during the washing stage. When the filter is blocked by pollutants, the water tank is always not full of water. At this time, the washing pump cannot obtain enough washing liquid from the water tank, which leads to the washing pump failing to achieve the ideal cleaning effect, reducing the washing efficiency and wasting energy.

[0031] Based on the above situation, the inventive concept of the washing control method applied to the dishwasher provided by the embodiment of the present application is that the controller can enable the washing pump to start and stop according to the rotation speed of the spray arm and the liquid level in the water tank, so as to ensure that there is sufficient water in the water tank during the operation of the washing pump, so that effective washing can be performed. This method reduces ineffective washing, improves the utilization rate of the washing pump, and reduces energy waste by starting and stopping the washing pump. In addition, in the present application, the controller can also perform slag treatment on the pollutants when the return water time is too long, thereby avoiding the problem of too little working time of the spray arm caused by too long return water time. At the same time, when the filter is completely blocked, the process of first replenishing water and then discharging slag treatment can be adopted to further avoid clogging of pollutants.

[0032] The controller is used as the execution subject to execute the washing control method applied to the dishwasher in the following embodiment. Specifically, the execution subject may be a hardware device of the controller, or a software application in the controller that implements the following embodiment, or a computer-readable storage medium that is installed with the software application that implements the following embodiment, or a code of the software application that implements the following embodiment.

[0033] The technical solution of the present application is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0034] Figure 1 FIG. 1 is a flow chart of a washing control method applied to a dishwasher provided by an embodiment of the present application. Figure 1 As shown, with the controller as the execution subject, the method of this embodiment may include the following steps:

[0035] S101. During the washing process of the dishwasher, if it is determined that the working parameters of the washing pump of the dishwasher meet the first preset condition, it is determined that the liquid level of the water tank in the dishwasher is less than the first preset liquid level, and the washing pump is controlled to stop working.

[0036] In this embodiment, during the washing process of the dishwasher, the controller can obtain the working parameters of the washing pump of the dishwasher in real time. Optionally, the working parameters include at least the rotation speed of the washing pump and the power of the washing pump. The controller can determine whether the working parameters meet the first preset condition based on the working parameters. If yes, the controller can determine that the liquid level of the current dishwasher sink is less than the first preset liquid level. When the liquid level of the dishwasher sink is less than the first preset liquid level, the controller can determine that the washing liquid in the dishwasher sink cannot meet the working requirements of the dishwasher washing pump. Therefore, the controller can control the dishwasher washing pump to stop working and wait for the sink to return water.

[0037] Optionally, the first preset liquid level may be determined according to the position of the lowest liquid level detector disposed in the water tank of the dishwasher.

[0038] In one example, the first preset condition includes that the rotation speed of the washing pump is greater than zero and less than a first preset rotation speed, and the power of the washing pump is less than the first preset power.

[0039] In this example, the specific process of the controller determining whether the working parameters of the washing pump of the dishwasher meet the first preset condition may include:

[0040] The controller determines whether the speed of the washing pump is greater than zero and less than a first preset speed. The first preset speed can be a very small speed. For example, the first preset speed can be 20 revolutions. When the speed of the washing pump is less than the first preset speed, the washing pump is in an invalid washing state. The speed greater than 0 is used to determine that the washing pump is currently in a working state.

[0041] If the speed of the washing pump is greater than zero and less than the first preset speed, it means that the washing pump is in working state, but its washing behavior is invalid. At this time, the controller can further determine whether the power of the washing pump is less than the first preset power. If so, the working parameters of the washing pump meet the first preset condition.

[0042] In one example, the value of the first preset power is the set power of the washing pump minus the preset value. The set power of the washing pump is the power of the washing pump at a set speed, and the preset value is the product of the set power of the washing pump and the preset coefficient. For example, the set power may be 100 watts, and the preset coefficient is 10%, then the first preset power may be 90 watts.

[0043] When the water level in the water tank is low, the washing pump has insufficient water, the washing pump speed decreases, and the washing pump power decreases. Therefore, when the washing pump power is less than the first preset power, it means that the water level in the water tank of the dishwasher is less than the first preset level.

[0044] S102: When it is determined that the liquid level in the water tank is greater than or equal to a second preset liquid level, control the washing pump to operate so that the dishwasher performs a washing process, wherein the second preset liquid level is greater than the first preset liquid level.

[0045] In this embodiment, the controller can wait for the water in the water tank to return after controlling the washing pump to stop working. When the controller determines that the liquid level in the water tank is greater than or equal to the second preset liquid level, it can determine that the washing liquid in the water tank can meet the working requirements of the washing pump of the dishwasher. Therefore, when the controller determines that the liquid level in the water tank is greater than or equal to the second preset liquid level, the controller can control the washing pump to work. After the washing pump starts working, the dishwasher can perform washing processing.

[0046] Optionally, the second preset liquid level can be determined according to the position of the highest liquid level detector arranged in the water tank of the dishwasher. Optionally, the second preset liquid level is greater than the first preset liquid level.

[0047] The washing control method for a dishwasher provided in the present application controls the washing pump to stop working when the working parameter of the washing pump meets the first preset condition. The controller can re-control the washing pump to work after waiting for the water tank to recover from less than the first preset liquid level to the second preset liquid level, thereby ensuring that the washing pump can perform the washing operation when there is sufficient washing liquid in the water tank, thereby reducing the probability of ineffective washing, improving the washing efficiency of the washing pump, and reducing energy consumption.

[0048] Figure 2 FIG. 1 is a flow chart of a washing control method applied to a dishwasher provided by an embodiment of the present application. Figure 1 Based on the embodiment shown, Figure 2 As shown, with the controller as the execution subject, the method of this embodiment may include the following steps:

[0049] S201: If it is determined that the working parameters of the washing pump of the dishwasher meet the second preset condition, it is determined that the washing pump is abnormal, and a first alarm message is issued, wherein the first alarm message indicates that the washing pump is abnormal.

[0050] In this embodiment, based on the first preset condition, the controller may further be provided with a second preset condition. Optionally, the second preset condition includes that the speed of the washing pump is greater than zero and less than the first preset speed, and the power of the washing pump is greater than the second preset power.

[0051] Optionally, the specific process of the controller determining whether the working parameters of the washing pump of the dishwasher meet the second preset condition may include:

[0052] The controller determines whether the speed of the washing pump is greater than zero and less than a first preset speed. The first preset speed can be a very small speed. For example, the first preset speed can be 20 revolutions. When the speed of the washing pump is less than the first preset speed, the washing pump is in an invalid washing state. The speed greater than 0 is used to determine that the washing pump is currently in a working state.

[0053] If the speed of the washing pump is greater than zero and less than the first preset speed, it means that the washing pump is in working state, but its washing behavior is invalid. At this time, the controller can further determine whether the power of the washing pump is greater than the second preset power. If so, the working parameters of the washing pump meet the second preset condition.

[0054] In one example, the second preset power is the sum of the set power of the washing pump and the preset value. The set power of the washing pump is the power of the washing pump at the set speed, and the preset value is the product of the set power of the washing pump and the preset coefficient. For example, the set power can be 100 watts, and the preset coefficient is 10%, then the second preset power can be 110 watts.

[0055] When the washing power is greater than the second preset power and the washing pump is running at a low speed, it indicates that the washing pump is blocked. At this time, the controller can determine that the washing pump is abnormal. The controller can generate a first alarm message. The first alarm message indicates that the washing pump is abnormal. Optionally, the abnormality can be a washing pump blockage.

[0056] S202: If it is determined that the operating parameters of the washing pump of the dishwasher meet the third preset condition, it is determined that the speed detection unit for detecting the speed of the washing pump is abnormal, and a second alarm message is issued, wherein the second alarm message indicates that the speed detection unit for detecting the speed of the washing pump is abnormal.

[0057] In this embodiment, based on the first preset condition and the second preset condition, a third preset condition may also be provided in the controller. Optionally, the third preset condition includes that the speed of the washing pump is greater than zero and less than the first preset speed, and the power of the washing pump is greater than or equal to the first preset power, and the power of the washing pump is less than or equal to the second preset power. Wherein, the first preset power is less than the second preset power. For example, the set power may be 100 watts, and the preset coefficient is 10%, then the first preset power may be 90 watts, and the second preset power may be 110 watts.

[0058] Optionally, the specific process of the controller determining whether the working parameters of the washing pump of the dishwasher meet the third preset condition may include:

[0059] The controller determines whether the speed of the washing pump is greater than zero and less than a first preset speed. The first preset speed can be a very small speed. For example, the first preset speed can be 20 revolutions. When the speed of the washing pump is less than the first preset speed, the washing pump is in an invalid washing state. The speed greater than 0 is used to determine that the washing pump is currently in a working state.

[0060] If the speed of the washing pump is greater than zero and less than the first preset speed, it means that the washing pump is in working state, but its washing behavior is invalid washing. At this time, the controller can further determine whether the power of the washing pump is greater than or equal to the first preset power and less than or equal to the second preset power. If yes, the working parameters of the washing pump meet the third preset condition.

[0061] When the washing power is between the first preset power and the second preset power, and the washing pump is running at a low speed, it indicates that the rotation speed detector may be abnormal. At this time, the controller can generate a second alarm message. The second alarm message indicates that the rotation speed detector is abnormal.

[0062] The washing control method applied to a dishwasher provided in the present application realizes the detection of abnormalities of a speed detector and a washing pump at low speed by setting a second preset condition and a third preset condition, thereby improving the management efficiency of the washing pump, avoiding ineffective operation of the dishwasher under abnormal conditions, improving the washing efficiency of the washing pump, and reducing energy consumption.

[0063] Figure 3 FIG. 1 is a flow chart of a washing control method applied to a dishwasher provided by an embodiment of the present application. Figure 1 and Figure 2 Based on the embodiment shown, Figure 3 As shown, with the controller as the execution subject, the method of this embodiment may include the following steps:

[0064] S301. During the washing process of the dishwasher, if it is determined that the working parameters of the washing pump of the dishwasher meet the first preset condition, it is determined that the liquid level of the water tank in the dishwasher is less than the first preset liquid level, and the washing pump is controlled to stop working.

[0065] Among them, step S301 and Figure 2 The implementation of step S101 in the embodiment is similar and will not be described in detail in this embodiment.

[0066] S302: When it is determined that the liquid level of the water tank is greater than or equal to the second preset liquid level, determine the first water return time of the water tank. The first water return time represents the time taken for the liquid level of the water tank to recover from less than the first preset liquid level to the second preset liquid level. If it is determined that the first water return time is greater than the first preset time, perform a first slag removal process on the contaminants on the filter screen of the dishwasher.

[0067] In this embodiment, the controller can start a timer when the washing pump stops working and waits for water to return. The timer is used to record the duration of the water return of the water tank up to the current moment.

[0068] Optionally, the controller may stop timing when the liquid level of the water tank is greater than or equal to the second preset liquid level, and use the time from the first preset liquid level to the second preset liquid level as the first water return time. In this case, the first water return time represents the time it takes for the liquid level of the water tank to recover from being less than the first preset liquid level to the second preset liquid level.

[0069] Optionally, the controller can compare the first water return time with a first preset time. If the first water return time is longer than the first preset time, it means that the contaminants in the dishwasher have blocked the filter of the water tank.

[0070] Optionally, the controller can also directly compare the first water return time recorded by the timer with the first preset time during the timer timing. If the first water return time is longer than the first preset time, the controller does not need to continue waiting for water return until the liquid level reaches the second preset liquid level. Moreover, when the first water return time is longer than the first preset time, it indicates that the contaminants in the dishwasher have seriously blocked the filter screen of the water tank.

[0071] At this time, after the controller determines that the pollutants have blocked the filter of the sink, the controller can perform a first slag removal process on the pollutants on the filter of the dishwasher.

[0072] Optionally, the first slag removal process may include the following steps:

[0073] Step 21, controlling the washing pump to stop working after starting and working for the second working time.

[0074] In this step, the controller can start and stop the washing pump for a short time. The short-time start and stop can specifically include: the controller controls the washing pump to start. The controller controls the washing pump to stop working after running for a second working time. The short-time start and stop of the washing pump can break up the pollutants attached to the filter screen and make the pollutants float. Optionally, the second working time can be a very short time. For example, the second working time can be 1s.

[0075] Step 22: Control the drainage pump in the dishwasher to stop working after starting and working for the second working time.

[0076] In this step, the controller can start and stop the drainage pump for a short time after completing the short start and stop of the washing pump. The short start and stop can specifically include: the controller controls the drainage pump to start. The controller controls the drainage pump to stop working after running for a second working time. The short start and stop of the drainage pump can enable pollutants to be quickly discharged through the sewer. Optionally, the second working time can be a very short time. For example, the second working time can be 1s.

[0077] Step 23: Control the water inlet valve of the dishwasher to open, so as to replenish the dishwasher with a first amount of clean water.

[0078] In this step, the controller can start the water inlet valve after completing the short-term start and stop of the drain pump. When the water inlet valve is started, the controller can replenish the dishwasher with a first amount of clean water. The clean water is used to supplement the clean water discharged during the short-term start and stop of the drain pump. Optionally, the first amount of water can be a smaller amount of water. 200ml.

[0079] In one example, the controller may also perform multiple first deslagging treatments on the filter screen of the dishwasher after determining that the contaminants have blocked the filter screen of the sink. The process may include the following steps:

[0080] Step 31, performing an initial first deslagging treatment on the pollutants on the filter screen of the dishwasher.

[0081] In this step, the controller may first perform a first slag removal process.

[0082] Step 32, repeat the following steps until the second water return time of the water tank is less than the second preset time: after controlling the washing pump to work within the first working time, determine the second water return time of the water tank. The second water return time represents the time taken for the liquid level of the water tank to return to the second preset liquid level. If it is determined that the second water return time is greater than the second preset time, the pollutants on the filter screen of the dishwasher are subjected to the first slag removal treatment again.

[0083] In this step, after completing the first slag removal process, the controller can control the washing pump to work for a short time, and then record the second water return time for the water tank liquid level to return to the second preset liquid level. If the second water return time is longer than the second preset time, it means that the pollutants on the filter screen of the dishwasher have not been completely cleaned. At this time, the controller can perform the first slag removal process again. If the second water return time is less than or equal to the second preset time, it means that the pollutants on the filter screen of the dishwasher have been completely cleaned. At this time, the controller can control the dishwasher to resume the normal washing process.

[0084] Optionally, the first working time length may be 1 minute. Optionally, the second preset time length may be a very short time. For example, the second preset time length may be 2 seconds, 3 seconds, etc.

[0085] Optionally, the above-mentioned cycle process may end when the second water return time is less than or equal to the second preset time. Alternatively, the above-mentioned cycle process may end when the number of cycles exceeds the upper limit. When the cycle process ends according to the number of cycles exceeding the upper limit, the controller may also send an alarm message indicating abnormal slag discharge.

[0086] S303, controlling the washing pump to operate so that the dishwasher performs washing. The second preset liquid level is greater than the first preset liquid level.

[0087] Among them, step S303 and Figure 2 The implementation of step S103 in the embodiment is similar and will not be described in detail in this embodiment.

[0088] The washing control method applied to the dishwasher provided in the present application records the return water time to determine whether the first slag removal treatment is required, thereby effectively executing the first slag removal treatment and avoiding the problem of low washing efficiency of the dishwasher due to too long waiting time for return water.

[0089] Figure 4 FIG. 1 is a flow chart of a washing control method applied to a dishwasher provided by an embodiment of the present application. Figures 1 to 3 Based on the embodiment shown, Figure 4 As shown, with the controller as the execution subject, the method of this embodiment may include the following steps:

[0090] S401: If it is determined that the working parameters of the washing pump of the dishwasher meet the fourth preset condition, a second deslagging process is performed on the pollutants on the filter screen of the dishwasher.

[0091] In this embodiment, based on the first preset condition, a fourth preset condition may be further provided in the controller. Optionally, the fourth preset condition includes that the rotation speed of the washing pump of the dishwasher is zero, and the liquid level of the water tank is less than the first preset liquid level.

[0092] Optionally, the specific process of the controller determining whether the working parameters of the washing pump of the dishwasher meet the fourth preset condition may include: the controller determines whether the rotation speed of the washing pump is zero. If so, the controller obtains the current liquid level and determines whether the current liquid level is less than the first preset liquid level. If the current liquid level is less than the first preset liquid level, it means that the filter is completely blocked. At this time, after the controller determines that the contaminants have completely blocked the filter of the sink, the controller can perform a second screening process on the contaminants on the filter of the dishwasher.

[0093] Optionally, the second slag removal process may include the following steps:

[0094] Step 41: Control the water inlet valve of the dishwasher to open, so as to replenish the dishwasher with a second amount of clean water.

[0095] In this step, the controller may first start the water inlet valve. When the water inlet valve is started, the controller may add a second amount of clean water to the dishwasher. When the second amount of clean water enters the dishwasher from the water inlet at the bottom of the dishwasher, the clean water may disperse the pollutants attached to the filter and make the pollutants float. Optionally, since the second amount of water enters when the filter is completely blocked and is used to disperse the pollutants, the second amount of water is a larger amount of water. For example, the second amount of water may be 1L of clean water.

[0096] Step 42: Control the drainage pump in the dishwasher to stop working after starting and working for the second working time.

[0097] In this step, the controller may start and stop the drainage pump once for a short time. The short-time start and stop may specifically include: the controller controls the drainage pump to start. The controller controls the drainage pump to stop working after running for a second working time. The short-time start and stop of the drainage pump can enable pollutants to be quickly discharged through the sewer. Optionally, the second working time can be a very short time. For example, the second working time can be 1 second.

[0098] Step 43: Control the washing pump to stop working after starting and working for the second working time.

[0099] In this step, the controller can start and stop the washing pump for a short time after completing the short start and stop of the drainage pump. The short start and stop can specifically include: the controller controls the washing pump to start. The controller controls the washing pump to stop working after running for a second working time. The short start and stop of the washing pump can break up the pollutants attached to the filter screen and make the pollutants float. Optionally, the second working time can be a very short time. For example, the second working time can be 1s.

[0100] Step 44: Control the drainage pump in the dishwasher to stop working after starting and working for the second working time.

[0101] In this step, the controller can start and stop the drainage pump for a short time after completing the short start and stop of the washing pump. The short start and stop can specifically include: the controller controls the drainage pump to start. The controller controls the drainage pump to stop working after running for a second working time. The short start and stop of the drainage pump can enable pollutants to be quickly discharged through the sewer. Optionally, the second working time can be a very short time. For example, the second working time can be 1s.

[0102] In one example, after determining that the contaminants have clogged the filter screen of the sink, the controller may further perform a second deslagging treatment on the contaminants on the filter screen of the dishwasher, and then cycle through the first deslagging treatment multiple times to improve the deslagging effect. The process may include the following steps:

[0103] Step 51, performing an initial second deslagging treatment on the pollutants on the filter screen of the dishwasher.

[0104] In this step, the controller may first perform a second slag removal process.

[0105] Step 52, repeatedly executing the following steps until the speed of the washing pump is greater than the second preset speed: controlling the washing pump to start. If it is determined that the speed of the washing pump is less than the second preset speed, controlling the water inlet valve of the dishwasher to open to replenish water to the dishwasher, and performing a first slag removal process on the contaminants on the filter screen of the dishwasher.

[0106] In this step, the controller may start the washing pump after completing the second deslagging process. The controller may obtain the rotation speed of the washing pump after starting the washing pump. The controller may compare the rotation speed of the washing pump with the second rotation speed. If the rotation speed of the washing pump is less than the second preset rotation speed, it means that the water volume in the water tank of the dishwasher has not reached the second preset water volume. At this time, the controller may perform the first deslagging process again. If the rotation speed of the washing pump is greater than or equal to the second preset rotation speed, it means that the water volume in the water tank of the dishwasher has reached the second preset water volume. At this time, the controller may end the process of controlling the dishwasher to resume normal washing process.

[0107] Optionally, the above-mentioned cycle process may end when the rotation speed of the washing pump is greater than or equal to the second preset rotation speed. Alternatively, the above-mentioned cycle process may end when the number of cycles exceeds the upper limit. When the cycle process ends according to the number of cycles exceeding the upper limit, the controller may also send an alarm message indicating abnormal slag discharge.

[0108] S402: If it is determined that the working parameters of the washing pump of the dishwasher meet the fifth preset condition, it is determined that the washing pump is abnormal, and a third alarm message is issued, wherein the third alarm message indicates that the washing pump is abnormal.

[0109] In this embodiment, based on the first preset condition and the fourth preset condition, the controller may further be provided with a fifth preset condition. Optionally, the fifth preset condition includes that the speed of the washing pump of the dishwasher is zero, and the liquid level of the water tank is greater than the first preset liquid level.

[0110] Optionally, the specific process of the controller determining whether the working parameters of the washing pump of the dishwasher meet the fifth preset condition may include: the controller determines whether the rotation speed of the washing pump is zero. If so, the controller obtains the current liquid level and determines whether the current liquid level is greater than or equal to the first preset liquid level. If the current liquid level is greater than the first preset liquid level, it means that the dishwasher is in a state where there is water in the sink but the dishwasher is not working.

[0111] The controller may determine that the washing pump is abnormal when determining that the working parameter meets the fifth preset condition. The controller may send a third alarm message. The third alarm message may be used to indicate that the washing pump is abnormal. Optionally, the washing pump is abnormal in that the washing pump does not work when there is water in the sink.

[0112] The washing control method applied to the dishwasher provided in the present application, by setting the fourth preset condition and the fifth preset condition, can realize the judgment of whether the washing pump stops working due to an abnormality or a blockage by contaminants, thereby realizing the abnormal judgment of the dishwasher, avoiding the dishwasher from failing to work normally under abnormal circumstances, improving the washing efficiency of the washing pump, and reducing energy consumption.

[0113] Based on the above embodiment, a control example of the dishwasher can be as follows: Figure 5 As shown, taking the controller of the dishwasher as the execution body, the following steps may be included:

[0114] S501, the dishwasher enters the main wash phase.

[0115] S502: The controller determines whether the washing pump is working. If so, the process proceeds to S503. Otherwise, the process returns to start the washing pump and re-executes S502.

[0116] S503, the controller can turn on the speed detector after detecting that the washing pump starts to work. The speed detector is used to detect the speed V1 of the washing pump in real time. Optionally, the speed can be the speed of the spray arm of the washing pump. When the washing pump runs at a set speed, the spray arm has a corresponding speed. When the liquid level in the water tank drops, the amount of water sprayed by the washing pump drops, the water pressure decreases, and the speed of the spray arm also decreases.

[0117] S504, the controller determines whether the speed detector detects that the spray arm speed V1 is 0. If yes, it means that the washing pump is not working, and S521 is executed. If no, it means that the washing pump is working normally, and S505 is executed.

[0118] S505, the controller determines whether the speed detector detects that the spray arm speed V1 is lower than the first preset speed VL. If yes, it means that the washing pump is washing ineffectively, and execute S507. If no, it means that the washing pump is working normally, and execute step S506. Optionally, the first preset speed VL can be determined according to the first preset water level L1.

[0119] S506: The washing pump operates normally.

[0120] S507, the controller obtains the power P0 of the washing pump, and determines whether the power P0 is greater than the second preset power. The second preset power is 110% Ps. Ps is the set power of the washing pump. If the power P0 is greater than the second preset power, execute S508, if the power P0 is less than or equal to the second preset power, execute S509.

[0121] S508: The controller generates a first alarm message. The first alarm message is used to indicate that the washing pump is abnormal.

[0122] S509: The controller determines whether the power P0 is less than or equal to the second preset power and greater than or equal to the first preset power. If yes, execute S510. If no, execute S511.

[0123] S510: The controller generates second alarm information. The second alarm information is used to indicate that the rotation speed detector is abnormal.

[0124] S511, the controller controls the washing pump to stop working.

[0125] S512, the liquid level detector works.

[0126] S513, the controller obtains the liquid level detected by the liquid level detector, and determines whether the liquid level is greater than or equal to the second preset liquid level L0. If yes, it means that the water volume in the water tank meets the requirement, and executes S514. If no, it means that the water volume in the water tank is insufficient, the water tank continues to return water, and returns to S512.

[0127] S514, the liquid level detector stops working, and the controller obtains the first water return time T1.

[0128] S515. Due to the accumulation of pollutants, the effective working time of the spray arm in each cycle will be reduced and the water tank return time will be increased. The controller determines whether the first return time T1 is greater than the first preset time T0. If yes, it means that there is accumulation of pollutants on the filter screen, and execute S516. If no, it means that it can be executed normally, and execute S506.

[0129] S516: The controller controls the washing pump to start and stop for a short time, so that the pollutants deposited on the filter are dispersed and floated, and gathered in the middle. Optionally, during the short start and stop process, the washing pump starts for a second working time.

[0130] S517: The controller controls the drainage pump to start and stop for a short time, and uses a small amount of water to carry away pollutants. Optionally, during the short start and stop process, the drainage pump starts for a second working time.

[0131] S518, the controller controls the water inlet valve to perform a small amount of water replenishment to make up for the water that was taken out by the previous slag discharge. Optionally, the water inlet valve can be a solenoid valve. Optionally, the water replenishment amount can be a first water amount.

[0132] S519: The controller may control the washing pump to work for a short time. Optionally, the short time working may be a first working time. After the first working time is completed, the washing pump stops working.

[0133] S520, the controller obtains the second water return time T1. The controller determines whether the second water return time T1 is less than the second preset time Te. If yes, it means that the slag discharge has been completed, and S531 is executed. If no, it means that the slag discharge needs to be re-drained, and the process returns to S516. The second water return time Te is less than the first water return time T0.

[0134] S521, the washing pump stops working.

[0135] S522, the liquid level detector works.

[0136] S523, the control obtains the liquid level from the liquid level detector, and determines whether the liquid level is greater than or equal to the second preset liquid level L0. If yes, it means that the water volume in the water tank meets the requirement, but the washing pump does not work, and then execute S524. If no, it means that the filter is completely blocked and the washing pump lacks water, and then execute S525.

[0137] S524: The controller generates a third alarm message, wherein the third alarm message is used to indicate that the washing pump is abnormal.

[0138] S525, the controller controls the water inlet valve to perform water replenishment, and after the water replenishment is completed, the pollutants are dispersed and floated. Optionally, the water replenishment amount can be a second water amount. Optionally, the second water amount can be greater than the first water amount.

[0139] S526. The controller controls the drainage pump to start and stop for a short time to discharge slag.

[0140] S527, the controller controls the washing pump to start and stop for a short time to collect the residue, so that the pollutants float and concentrate.

[0141] S528, the controller controls the drainage pump to start and stop for a short time to discharge slag.

[0142] S529, the washing pump operates normally.

[0143] S530, the speed detector works and obtains the washing pump speed V1.

[0144] S531, the controller determines whether the washing pump speed V1 is greater than the second preset speed Vs. If yes, it continues to work normally and returns to 506. If no, it enters the slag collection, discharge and water replenishment cycle and executes S532.

[0145] S532: The controller controls the washing pump to start and stop for a short time.

[0146] S533: The controller controls the drainage pump to start and stop for a short time.

[0147] S534: The controller controls the water inlet valve to perform a small amount of water replenishment, and returns to step S529.

[0148] Figure 6 FIG. 1 shows a structural diagram of a washing control device applied to a dishwasher provided by an embodiment of the present application. Figure 6 As shown, the washing control device 600 applied to the dishwasher of this embodiment is used to implement the operation corresponding to the controller in any of the above method embodiments. The washing control device 600 applied to the dishwasher of this embodiment includes:

[0149] The first processing module 601 is used to determine that the liquid level of the water tank in the dishwasher is less than the first preset liquid level and control the washing pump to stop working if it is determined that the working parameters of the washing pump of the dishwasher meet the first preset condition during the washing process of the dishwasher;

[0150] The second processing module 602 is used to control the washing pump to work so that the dishwasher performs washing processing when it is determined that the liquid level in the water tank is greater than or equal to a second preset liquid level; wherein the second preset liquid level is greater than the first preset liquid level.

[0151] Optionally, the first preset condition includes that the rotation speed of the washing pump is greater than zero and less than a first preset rotation speed, and the power of the washing pump is less than a first preset power.

[0152] Optionally, the value of the first preset power is the set power of the washing pump minus a preset value; wherein the set power of the washing pump is the power of the washing pump at a set speed, and the preset value is the product of the set power of the washing pump and a preset coefficient.

[0153] Optionally, the first processing module 601 is used to:

[0154] If it is determined that the working parameters of the washing pump of the dishwasher meet the second preset condition, it is determined that an abnormality occurs in the washing pump, and a first alarm message is issued; wherein the first alarm message indicates that an abnormality occurs in the washing pump.

[0155] Optionally, the second preset condition includes that the rotation speed of the washing pump is greater than zero and less than the first preset rotation speed, and the power of the washing pump is greater than the second preset power.

[0156] Optionally, the second preset power is the sum of the set power of the washing pump and a preset value; wherein the set power of the washing pump is the power of the washing pump at a set speed, and the preset value is the set power of the washing pump multiplied by a preset coefficient.

[0157] Optionally, the first processing module 601 is used to:

[0158] If it is determined that the operating parameters of the washing pump of the dishwasher meet the third preset conditions, it is determined that the speed detection unit used to detect the speed of the washing pump has an abnormality, and a second alarm message is issued; wherein the second alarm message indicates that the speed detection unit used to detect the speed of the washing pump has an abnormality.

[0159] Optionally, the third preset condition includes that the speed of the washing pump is greater than zero and less than the first preset speed, and the power of the washing pump is greater than or equal to the first preset power and the power of the washing pump is less than or equal to the second preset power;

[0160] The first preset power is less than the second preset power.

[0161] Optionally, the second processing module 602 is configured to:

[0162] Determine a first water return time of the water tank; wherein the first water return time represents the time taken for the liquid level of the water tank to recover from being less than the first preset liquid level to the second preset liquid level;

[0163] If it is determined that the first water return time is greater than the first preset time, a first slag removal process is performed on the pollutants on the filter screen of the dishwasher.

[0164] Optionally, the second processing module 602 is configured to:

[0165] Carry out the first deslagging treatment on the contaminants on the filter of the dishwasher;

[0166] Repeat the following steps until the second water return time of the sink is less than the second preset time:

[0167] After controlling the washing pump to work within the first working time, the second water return time of the water tank is determined; wherein the second water return time represents the time taken for the liquid level of the water tank to recover to the second preset liquid level again; if it is determined that the second water return time is greater than the second preset time, the contaminants on the filter of the dishwasher are subjected to the first slag removal treatment again.

[0168] Optionally, the second processing module 602 is configured to:

[0169] Controlling the washing pump to stop working after starting and working for a second working time;

[0170] Controlling a drainage pump in the dishwasher to stop working after starting and working for a second working time;

[0171] The water inlet valve of the dishwasher is controlled to open, so as to replenish the dishwasher with a first amount of clean water.

[0172] Optionally, the first processing module 601 is used to:

[0173] If it is determined that the operating parameters of the washing pump of the dishwasher meet the fourth preset condition, a second deslagging process is performed on the pollutants on the filter screen of the dishwasher.

[0174] Optionally, the fourth preset condition includes that the rotation speed of the washing pump of the dishwasher is zero, and the liquid level of the water tank is less than the first preset liquid level.

[0175] Optionally, the first processing module 601 is used to:

[0176] Perform the initial second deslagging treatment on the contaminants on the filter of the dishwasher;

[0177] Repeat the following steps until the speed of the washing pump is greater than the second preset speed: control the washing pump to start; if it is determined that the speed of the washing pump is less than the second preset speed, control the dishwasher to perform a first slag removal process on the pollutants on the filter of the dishwasher.

[0178] Optionally, the first processing module 601 is used to:

[0179] Controlling the water inlet valve of the dishwasher to open, so as to replenish the dishwasher with a second amount of clean water;

[0180] Controlling a drainage pump in the dishwasher to stop working after starting and working for a second working time;

[0181] Controlling the washing pump to stop working after starting and working for the second working time;

[0182] The drain pump in the dishwasher is controlled to stop working after starting and working for a second working time.

[0183] Optionally, the first processing module 601 is used to:

[0184] If it is determined that the operating parameters of the washing pump of the dishwasher meet the fifth preset condition, it is determined that the washing pump is abnormal, and a third alarm message is issued; wherein the third alarm message indicates that the washing pump is abnormal.

[0185] Optionally, the fifth preset condition includes that the rotation speed of the washing pump of the dishwasher is zero, and the liquid level of the water tank is greater than or equal to the first preset liquid level.

[0186] The washing control device 600 applied to the dishwasher provided in the embodiment of the present application can execute the above method embodiment. Its specific implementation principle and technical effects can be found in the above method embodiment, which will not be described in detail in this embodiment.

[0187] Figure 7 FIG. 1 shows a hardware structure diagram of a controller provided in an embodiment of the present application. Figure 7 As shown, the controller 700 is used to implement the operations corresponding to the controller in any of the above method embodiments. The controller 700 of this embodiment may include: a memory 701 , a processor 702 and a communication interface 704 .

[0188] The memory 701 is used to store computer programs. The memory 701 may include a high-speed random access memory (RAM), and may also include a non-volatile memory (NVM), such as at least one disk memory, and may also be a USB flash drive, a mobile hard disk, a read-only memory, a disk, or an optical disk.

[0189] The processor 702 is used to execute the computer program stored in the memory to implement the washing control method applied to the dishwasher in the above embodiment. For details, please refer to the relevant description in the above method embodiment. The processor 702 can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the invention can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor.

[0190] Optionally, the memory 701 may be independent or integrated with the processor 702 .

[0191] When the memory 701 is a device independent of the processor 702, the controller 700 may further include a bus 703. The bus 703 is used to connect the memory 701 and the processor 702. The bus 703 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of the present application is not limited to only one bus or one type of bus.

[0192] The communication interface 704 may be connected to the processor 701 via the bus 703. The processor 702 may control the communication interface 704 to implement communication with other components of the dishwasher.

[0193] The controller provided in this embodiment can be used to execute the above-mentioned washing control method applied to the dishwasher. Its implementation method and technical effect are similar, and this embodiment will not be repeated here.

[0194] Figure 8 FIG. 1 shows a structural schematic diagram of a dishwasher provided by an embodiment of the present application. Figure 8As shown, the dishwasher 800 of this embodiment is used to implement the operation corresponding to the controller in any of the above method embodiments. The dishwasher 800 of this embodiment is provided with a washing pump 810, at least one liquid level detector 820 and a controller 700. Optionally, a water tank 840 is provided in the dishwasher. At least one liquid level detector 820 is respectively arranged on the inner wall of the water tank 840. When a plurality of liquid level detectors 820 are included, there is a height difference between the plurality of liquid level detectors 820. Optionally, a speed detector 850 is also provided in the dishwasher. Optionally, the dishwasher further includes a drain pump 860 and a water inlet valve 870. Optionally, the controller 700 is electrically connected to the speed detector 850, the liquid level detector 820, the washing pump 810 and the drain pump 860.

[0195] Optionally, the speed detector 850 includes: a detection module 851 and a signal output module 852. The detection module 851 is fixed on the inner tank, and the signal output module 852 is installed on the spray arm 811. For example, in the case of magnetoelectric speed detection, the detection module is a Hall sensor installed on the inner tank; the signal output is an induction magnet installed on the spray arm. When the Hall element senses the passage of the magnet, a pulse signal is output to the control module, and the spray arm speed is calculated by detecting the pulse signal per unit time.

[0196] Optionally, the liquid level detector is installed on the water tank 840. The liquid level detector 820 may include a float 821 and a micro switch 822. When the first preset liquid level or the second preset liquid level is reached, the float 821 floats, and the micro switch 822 is turned on to generate a signal output to the control module.

[0197] After receiving signals such as the rotation speed and service, the controller 700 can control the on and off operation of the washing pump 810, the drainage pump 860, and the water inlet valve 870 according to the above method.

[0198] Optionally, the flow direction of the washing liquid in the dishwasher 800 may be as follows: Figure 8 The direction of the pollutants discharged from the dishwasher 800 by the drain pump 860 can be as follows: Figure 8 As shown by the dashed line with arrow in .

[0199] Alternatively, if Fig. 9The structure diagram of the water tank 840 is shown. The dotted line shows a water cup 841 in the water tank 840. The surface of the water cup 841 includes a through hole with a larger through hole. The water cup is used to achieve coarse filtration of pollutants. The water cup 841 has no bottom, so that all water and pollutants can pass through the top of the water tank 840. A filter screen 842 is provided. Optionally, the filter screen 842 is a plane filter screen. The filter pores of the plane filter screen are small, and fine filtration can be achieved. The setting of the filter screen 842 can filter pollutants and allow water to seep down. Optionally, in the water tank 840, the flow direction of the washing liquid can be shown as shown by the arrow in the figure. Optionally, the shaded area on the surface of the water cup shows the pollutants of the opposite pole. After the accumulation of pollutants, the area through which the washing liquid can pass may be blocked, thereby causing the leakage rate of the washing liquid to slow down.

[0200] During the washing process, the short-term operation of the washing pump will create a downward water pressure, stirring the water and causing the attached pollutants to float. The short-term operation of the drain pump can discharge the water and the floating pollutants together.

[0201] The present application also provides a computer-readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, it is used to implement the methods provided in the various embodiments described above.

[0202] Among them, the computer-readable storage medium can be a computer storage medium or a communication medium. The communication medium includes any medium that is convenient for transmitting a computer program from one place to another. The computer storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer. For example, a computer-readable storage medium is coupled to a processor so that the processor can read information from the computer-readable storage medium and write information to the computer-readable storage medium. Of course, the computer-readable storage medium can also be a component of the processor. The processor and the computer-readable storage medium can be located in an application-specific integrated circuit (ASIC). In addition, the ASIC can be located in a user device. Of course, the processor and the computer-readable storage medium can also exist in a communication device as discrete components.

[0203] Specifically, the computer-readable storage medium may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The storage medium may be any available medium that can be accessed by a general or special-purpose computer.

[0204] The present application also provides a computer program product, which includes a computer program stored in a computer-readable storage medium. At least one processor of a device can read the computer program from the computer-readable storage medium, and at least one processor executes the computer program so that the device implements the methods provided in the various embodiments described above.

[0205] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of modules is only a logical function division. There may be other division methods in actual implementation. For example, multiple modules can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.

[0206] Among them, each module can be physically separated, for example, installed in different locations of a device, or installed on different devices, or distributed on multiple network units, or distributed on multiple processors. Each module can also be integrated together, for example, installed in the same device, or integrated in a set of codes. Each module can exist in the form of hardware, or can also exist in the form of software, or can also be implemented in the form of software plus hardware. The present application can select some or all of the modules according to actual needs to achieve the purpose of the present embodiment.

[0207] When each module is implemented as an integrated module in the form of a software function module, it can be stored in a computer-readable storage medium. The above-mentioned software function module is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to perform some steps of the methods of each embodiment of the present application.

[0208] It should be understood that, although the various steps in the flowcharts in the above-described embodiments are sequentially displayed according to the indications of the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps is not strictly limited in order, and they can be executed in other orders. Moreover, at least a portion of the steps in the figure may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily to be carried out sequentially, but can be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0209] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A washing control method applied to a dishwasher, characterized in that: The method comprises: During the washing process of the dishwasher, if it is determined that the rotation speed of the washing pump of the dishwasher is greater than zero and less than a first preset rotation speed, and the power of the washing pump is less than a first preset power, it is determined that the liquid level of the water tank in the dishwasher is less than the first preset liquid level, and the washing pump is controlled to stop working; When it is determined that the liquid level of the water tank is greater than or equal to a second preset liquid level, the washing pump is controlled to operate so that the dishwasher performs a washing process; wherein the second preset liquid level is greater than the first preset liquid level.

2. The method according to claim 1, characterized in that The method further comprises: If it is determined that the speed of the washing pump of the dishwasher is greater than zero and less than the first preset speed, and the power of the washing pump is greater than the second preset power, it is determined that the washing pump is abnormal and a first alarm message is issued; wherein the first alarm message indicates that the washing pump is abnormal; and the second preset power is greater than the first preset power. If it is determined that the speed of the washing pump of the dishwasher is greater than zero and less than the first preset speed, and the power of the washing pump is greater than or equal to the first preset power, and the power of the washing pump is less than or equal to the second preset power, then it is determined that an abnormality occurs in the speed detection unit used to detect the speed of the washing pump, and a second alarm message is issued; wherein, the second alarm message indicates that an abnormality occurs in the speed detection unit used to detect the speed of the washing pump.

3. The method according to claim 1, characterized in that Before controlling the washing pump to work, the method further comprises: Determine a first water return time of the water tank; wherein the first water return time represents the time taken for the liquid level of the water tank to recover from being less than the first preset liquid level to the second preset liquid level; If it is determined that the first water return time is greater than a first preset time, a first slag removal process is performed on the pollutants on the filter screen of the dishwasher.

4. The method according to claim 3, characterized in that The first deslagging treatment is performed on the contaminants on the filter screen of the dishwasher, comprising: Performing an initial first deslagging treatment on the pollutants on the filter screen of the dishwasher; Repeat the following steps until the second water return time of the water tank is less than the second preset time: after controlling the washing pump to work within the first working time, determine the second water return time of the water tank; wherein the second water return time represents the time taken for the liquid level of the water tank to recover to the second preset liquid level again; if it is determined that the second water return time is greater than the second preset time, perform the first slag removal treatment on the contaminants on the filter screen of the dishwasher again.

5. The method according to claim 4, characterized in that The first slag removal process comprises: Controlling the washing pump to stop working after starting and working for a second working time; Controlling the drainage pump in the dishwasher to stop working after starting and working for a second working time; The water inlet valve of the dishwasher is controlled to open, so as to replenish a first amount of clean water into the dishwasher.

6. The method according to any one of claims 1 to 5, characterized in that The method further comprises: If it is determined that the rotation speed of the washing pump of the dishwasher is zero and the liquid level of the water tank is less than the first preset liquid level, a second deslagging process is performed on the pollutants on the filter screen of the dishwasher.

7. The method according to claim 6, characterized in that The second deslagging treatment of the pollutants on the filter screen of the dishwasher comprises: Performing a primary second deslagging treatment on the contaminants on the filter screen of the dishwasher; Repeat the following steps until the speed of the washing pump is greater than a second preset speed: control the washing pump to start; if it is determined that the speed of the washing pump is less than the second preset speed, control the dishwasher to perform a first slag removal process on the contaminants on the filter screen of the dishwasher.

8. The method according to claim 7, characterized in that The second slag removal process comprises: controlling the water inlet valve of the dishwasher to open, so as to replenish the dishwasher with a second amount of clean water; Controlling the drainage pump in the dishwasher to stop working after starting and working for a second working time; Controlling the washing pump to stop working after starting and working for a second working time; The drainage pump in the dishwasher is controlled to stop working after starting and working for a second working time.

9. A controller, characterized in that: The controller includes: a memory and a processor; The memory is used to store a computer program; the processor is used to implement the method according to any one of claims 1 to 8 according to the computer program stored in the memory.

10. A dishwasher, characterized in that: The dishwasher is provided with an inner tank, a spray arm, a water tank, a washing pump, a liquid level detector, a speed detector and the controller as claimed in claim 9; The liquid level detector is arranged on the inner wall of the water tank; there are height differences between the plurality of liquid level detectors; The detection module in the rotation speed detector is fixed on the inner container, and the signal output module of the rotation speed detector is installed on the spray arm.

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