Washing electric appliance drainage method, device and equipment and storage medium

Abstract

The invention relates to the technical field of washing equipment, in particular to a drainage method, device and equipment for a washing electric appliance and a storage medium, and the method comprises the steps: controlling a drainage pump to start to execute drainage work when a drainage instruction is received; when the preset drainage stopping condition is met, the drainage pump is controlled to stop working, and the residual water pump is controlled to start working; acquiring first real-time flow information fed back by the first flow sensor to judge whether a preset zero residual water condition is met or not; if yes, the residual water pump is controlled to stop working; according to the method disclosed by the invention, after the drainage pump finishes the drainage operation, the residual water pump is used for thoroughly removing the water in the area, prone to water accumulation, of the water cup; by analyzing the first real-time flow information, whether the condition of zero residual water is met or not is judged, in the process, the thoroughness of drainage is ensured, that is, it is ensured that no residual water exists in the water cup, and the problems of corrosion, pipeline blockage, peculiar smell and the like are effectively prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of washing equipment, and in particular to a method, device, equipment and storage medium for draining water from a washing appliance. Background Art

[0002] A dishwasher is a household appliance that mainly uses high-pressure cleaning water to clean dirt on dishes or cooking utensils; a dishwasher usually includes a base, a water guide plate that is arranged on the base and is recessed downward, an inner tank arranged on the water guide plate, a storage rack and a water spraying mechanism arranged in the inner tank, a water cup arranged at the bottom of the water guide plate, a washing pump for guiding the water in the water cup to the water spraying mechanism, and a drainage pump for guiding the water in the water cup to the external environment; when the dishwasher executes the drainage mode, the drainage pump is started, and the sewage in the water cup is pumped out by the suction or pressure generated by the drainage pump, and then the sewage is guided to the drainage pipe of the dishwasher and finally discharged into the household drainage system.

[0003] Currently, dishwashers on the market generally lack a mechanism to detect drainage efficiency. If the drainage system fails or the drainage efficiency is unsatisfactory, it may cause a series of problems: first, residual sewage may lead to the growth of bacteria and mold, affecting the hygiene of tableware and producing odor; second, the accumulation of dirt may clog the drainage pipes or water pumps, affecting the normal operation of the equipment and even requiring professional repairs; in addition, poor drainage may also reduce the cleaning efficiency of the dishwasher, making it difficult to completely remove stains and residues on the tableware.

[0004] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide a method for draining a washing appliance. By using a residual water pump in conjunction with the first real-time flow information fed back by a first flow sensor, the thoroughness of drainage can be ensured, thereby effectively preventing the occurrence of problems such as corrosion, pipe blockage and odor.

[0006] A first aspect of the present invention provides a method for draining a washing appliance, comprising: when a drainage instruction is received, controlling a drainage pump to start draining; when a preset drainage stop condition is met, controlling the drainage pump to stop working, and controlling a residual water pump to start working; obtaining first real-time flow information fed back by a first flow sensor, and judging whether a preset zero residual water condition is met based on the first real-time flow information; if so, controlling the residual water pump to stop working.

[0007] Optionally, in a first implementation method of the first aspect of the present invention, when a drainage instruction is received, the drainage pump is controlled to start drainage work, including: when a drainage instruction is received, obtaining current liquid level information fed back by a liquid level sensor; confirming the initial drainage speed of the drainage pump based on the current liquid level information, and controlling the drainage pump to start drainage work based on the confirmed initial drainage speed.

[0008] Optionally, in a second implementation method of the first aspect of the present invention, the drainage pump is controlled based on the initial drainage speed to start drainage work, and then also includes: obtaining a preset normal flow value, a preset flow abnormality duration and a preset reversal duration, and obtaining second real-time flow information fed back by a second flow sensor; if the second real-time flow information fed back by the second flow sensor is lower than the preset normal flow value, and the duration is greater than the preset flow abnormality duration, the working mode of the drainage pump is adjusted to the reverse mode; when the duration of the reverse mode is greater than the preset reversal duration, the working mode of the drainage pump is adjusted to the forward mode.

[0009] Optionally, in a third implementation method of the first aspect of the present invention, the initial drainage speed of the drainage pump is confirmed based on the current liquid level information, including: confirming the load information based on the current liquid level information, and obtaining the cleaning mode information; obtaining the historical drainage information based on the load information and the cleaning mode information, integrating the current liquid level information, the load information and the historical drainage information to obtain input data; inputting the input data into a pre-trained ARIMA model and a pre-trained LSTM model respectively to obtain a first prediction result and a second prediction result; based on preset weights, the first prediction result and the second prediction result are fused by weighted averaging to obtain a drainage time prediction result; obtaining the performance curve of the drainage pump, and confirming the initial drainage speed of the drainage pump based on the drainage time prediction result and the performance curve of the drainage pump.

[0010] Optionally, in a fourth implementation method of the first aspect of the present invention, when a preset drainage stop condition is met, the drainage pump is controlled to stop working, and the residual water pump is controlled to start working, including: obtaining a preset minimum water level threshold, and when the real-time liquid level information fed back by the liquid level sensor is lower than the preset minimum water level threshold, controlling the drainage pump to stop working; confirming the initial operating frequency of the residual water pump according to the real-time liquid level information, and controlling the residual water pump to start working based on the confirmed initial operating frequency.

[0011] Optionally, in a fifth implementation of the first aspect of the present invention, the first real-time flow information fed back by the first flow sensor is obtained, and whether the preset zero residual water condition is met according to the first real-time flow information is determined, including: obtaining the first real-time flow information fed back by the first flow sensor, and using Kalman filtering to denoise the first real-time flow information to obtain denoised flow information; obtaining a preset detection time and a preset minimum flow threshold, and if the denoised flow information is continuously lower than the preset minimum flow threshold within the preset detection time, it indicates that the preset zero residual water condition is met.

[0012] Optionally, in a sixth implementation of the first aspect of the present invention, if the above conditions are met, the residual water pump is controlled to stop working, and then the following includes: obtaining real-time liquid level information fed back by the liquid level sensor; if the real-time liquid level information is lower than a preset minimum water level threshold, and the lowest point of the air outlet of the plasma deodorization device is higher than the water level surface expressed by the liquid level sensor, the plasma deodorization device is controlled to start working; if the real-time liquid level information is greater than or equal to the preset safety water level threshold, an abnormal alarm instruction is generated.

[0013] The second aspect of the present invention provides a drainage device for a washing appliance, comprising: a first control module, used to control a drainage pump to start drainage when a drainage instruction is received; a second control module, used to control the drainage pump to stop working and control the residual water pump to start working when a preset drainage stop condition is met; a judgment module, used to obtain first real-time flow information fed back by a first flow sensor, and judge whether a preset zero residual water condition is met based on the first real-time flow information; and a third control module, used to control the residual water pump to stop working if the condition is met.

[0014] A third aspect of the present invention provides a washing appliance drainage device, which comprises: a memory and at least one processor, wherein the memory stores instructions; at least one of the processors calls the instructions in the memory to enable the washing appliance drainage device to perform each step of the washing appliance drainage method described in any one of the above items.

[0015] A fourth aspect of the present invention provides a computer-readable storage medium having instructions stored thereon, and when the instructions are executed by a processor, the various steps of any of the above-mentioned methods for draining water from a washing appliance are implemented.

[0016] In the technical solution of the present invention, after the drainage pump completes the drainage operation, the residual water pump is used to thoroughly remove water from the water-prone areas of the water cup; by analyzing the first real-time flow information, it is determined whether the condition of zero residual water is met. This process not only ensures the thoroughness of drainage, that is, ensures that there is no residual water in the water cup, but also effectively prevents the occurrence of problems such as corrosion, pipe blockage and odor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A first flow chart of a method for draining water from a washing appliance provided by an embodiment of the present invention; Figure 2 A second flow chart of the method for draining water from a washing appliance provided by an embodiment of the present invention; Figure 3 A third flow chart of the method for draining water from a washing appliance provided by an embodiment of the present invention; Figure 4 A fourth flow chart of the method for draining water from a washing appliance provided by an embodiment of the present invention; Figure 5 A fifth flow chart of the method for draining water from a washing appliance provided by an embodiment of the present invention; Figure 6 A sixth flow chart of the method for draining water from a washing appliance provided by an embodiment of the present invention; Figure 7 A seventh flow chart of the method for draining water from a washing appliance provided by an embodiment of the present invention; Figure 8 A schematic diagram of the structure of a drainage device for a washing appliance provided by an embodiment of the present invention; Fig. 9 A schematic diagram of the structure of a washing appliance drainage device provided by an embodiment of the present invention; Fig.10 A connection structure diagram of an embodiment of a water cup, a drainage pump, and a residual water pump provided by the present invention; Fig.11 This is a connection structure diagram of another embodiment of the water cup, drainage pump, and residual water pump provided by the present invention.

[0018] Explanation of main component symbols: 1-water cup, 2-drainage pump, 3-residual water pump, 4-first flow sensor, 5-second flow sensor, 6-drainage pipe, 7-check valve. DETAILED DESCRIPTION

[0019] The present invention provides a method, device, equipment and storage medium for draining water from a washing appliance. In the present invention, the terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" or "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0020] See also Fig.10 In one embodiment, the washing appliance includes a control device and a water cup 1, and a drain pump 2, a residual water pump 3 and a first flow sensor 4 electrically connected to the control device respectively. The drain end of the water cup 1 is connected to the drain pump 2 and the residual water pump 3 respectively through a drain pipe 6. The drain pump 2 and the residual water pump 3 are in parallel, that is, the drainage of the water pump can be achieved through the drain pump 2 or the drainage of the water cup 1 can be achieved through the residual water pump 3; the first flow sensor 4 is arranged in the drain pipe 6 and is located between the drain pump 2 and the residual water pump 3.

[0021] See also Fig.11 In another embodiment, the washing appliance includes a control device and a water cup 1, and a drain pump 2, a residual water pump 3 and a first flow sensor 4 electrically connected to the control device respectively, the water cup 1 includes a first drain end and a second drain end, the drain pump 2 is connected to the first drain end through a drain pipe 6, and the residual water pump 3 is connected to the second drain end through the drain pipe 6, and the water can be drained by the drain pump 2 or by the residual water pump 3. The output end of the drain pump 2 is provided with a one-way valve, which can effectively prevent the liquid from flowing in reverse, thereby avoiding possible backflow; the first flow sensor 4 is arranged in the drain pipe 6 and is located between the second drain end and the residual water pump 3.

[0022] For ease of understanding, the specific process of the embodiment of the present invention is described below. Figure 1 , an embodiment of the method for draining water from a washing appliance in an embodiment of the present invention includes: 101. When receiving a drainage instruction, control the drainage pump 2 to start drainage work; In this embodiment, when the system receives a drainage instruction, it can respond quickly and start the drainage pump 2 to perform drainage work, which not only significantly improves the efficiency of drainage, but also ensures that the accumulated water can be removed in time in an emergency; the drainage instruction can be a digital signal. When the washing device completes cleaning according to the cleaning mode selected by the user, the system detects the conditions for stopping cleaning and starting drainage, and sends a digital signal to start the drainage pump 2; in addition, the drainage instruction may be a text command. After the user selects "drainage" on the control panel of the washing device, the system starts the drainage pump 2.

[0023] 102. When the preset drainage stop condition is met, the drainage pump 2 is controlled to stop working, and the residual water pump 3 is controlled to start working; In this embodiment, the drainage pump 2 can be a centrifugal drainage pump 2, which can automatically adjust the rotation speed according to the comparison result between the first real-time flow detected during the drainage process and the drainage time prediction result, and has forward and reverse functions.

[0024] 103. Obtain first real-time flow information fed back by the first flow sensor 4, and determine whether a preset zero residual water condition is met according to the first real-time flow information; In this embodiment, after the drainage process is completely completed, that is, after the drainage pump 2 stops working, the system will automatically start the residual water pump 3 to further remove the parts of the water cup 1 where residual water is easily accumulated, ensuring that the water in these areas is completely removed, effectively avoiding corrosion problems, blockage problems and possible odor problems caused by residual water, thereby keeping the washing equipment and the water cup 1 clean and hygienic.

[0025] 104. If the conditions are met, the residual water pump 3 is controlled to stop working; In this embodiment, when the preset zero residual water condition is met, the residual water pump 3 is automatically stopped to avoid damage to the residual water pump 3 caused by excessive drainage, while improving the automation level of the washing equipment when performing drainage tasks.

[0026] Furthermore, in the present embodiment, when the working time of the residual water pump 3 is greater than the preset residual drainage time, the residual water pump 3 is controlled to stop working to prevent the residual water pump 3 from overheating or damage due to long-term operation; specifically, when the running time of the residual water pump 3 exceeds the set residual drainage time threshold, and the second real-time flow data provided by the second flow sensor 5 is not zero, it can be inferred that the residual water pump 3 may have a fault, which will result in reduced drainage efficiency or failure to completely stop drainage; at the same time, this may also indicate that there is a blockage problem in the drainage pipe 6, making it impossible for the residual water to be discharged smoothly; at this time, the control device will generate an abnormal instruction of the failure of the residual water pump 3 or the blockage of the residual drainage pipe, so as to prompt the staff to perform necessary maintenance work in time.

[0027] The present application discloses a method for draining water from a washing appliance. After the drain pump 2 completes the drainage operation, the residual water pump 3 is used to thoroughly remove water from the water-prone area of ​​the water cup 1. By analyzing the first real-time flow information, it is determined whether the condition of zero residual water is met. This process not only ensures the thoroughness of the drainage, that is, ensures that there is no residual water in the water cup 1, but also effectively prevents the occurrence of problems such as corrosion, pipe blockage and odor.

[0028] See also Figure 2 In an embodiment of the present invention, the washing appliance further comprises a liquid level sensor electrically connected to the control device, wherein the liquid level sensor is arranged in the water cup 1, and when receiving a drainage instruction, the drainage pump 2 is controlled to start drainage work, including: 201. When receiving a drainage instruction, obtaining current liquid level information fed back by a liquid level sensor; In this embodiment, the liquid level sensor can be an ultrasonic liquid level sensor. The ultrasonic liquid level sensor is not affected by factors such as water conductivity and impurities. The detection accuracy can reach ±0.5mm, and it can measure the water level in the water cup 1 more accurately. At the same time, the sensor has a wider detection range and can monitor the drainage conditions at different water levels in real time.

[0029] In other embodiments, the liquid level information can be obtained in real time through the liquid level sensor to ensure the efficiency and accuracy of the drainage process; when the drainage pump 2 starts working, the liquid level monitoring mechanism is started, and the working state of the drainage pump 2 is dynamically adjusted according to the real-time liquid level information to ensure the smooth drainage process and prevent the impact of liquid level fluctuations on the system, so that the drainage process always remains in an efficient and stable state; in addition, the system can also adjust the speed of the drainage pump 2 according to the actual situation of the remaining drainage volume, so as to effectively reduce the noise level generated during operation; specifically, if the liquid level change rate is lower than the preset liquid level negative threshold, it means that the liquid level is dropping quickly or has When approaching the target liquid level, that is, approaching the preset minimum water level threshold, the control device will calculate the speed adjustment amount based on the preset speed adjustment coefficient and the liquid level change rate to reduce the operating speed of the drainage pump 2, thereby reducing the noise generated by high-speed operation and effectively improving the comfort of the environment. In addition, it can also reduce the loss of the drainage pump 2 and extend the service life of the drainage pump 2; the preset speed adjustment coefficient can be 0.5, and the speed adjustment amount is the product of the liquid level change rate and the speed adjustment coefficient; for example, if the liquid level change rate is -2 meters / minute, the system may calculate that the speed needs to be reduced by 1 meter / minute (-2 meters / minute * 0.5) to cope with the rapid change of the liquid level.

[0030] 202. Confirming an initial drainage speed of the drainage pump 2 based on the current liquid level information, and controlling the drainage pump 2 to start drainage based on the confirmed initial drainage speed; In this embodiment, the accuracy of the initial drainage speed directly affects the starting performance and operating stability of the drainage pump 2, which can ensure that the drainage pump 2 starts in the best state and effectively avoid mechanical wear or reduced drainage effect due to improper speed.

[0031] See also Figure 3 In an embodiment of the present invention, the washing appliance further includes a second flow sensor 5 electrically connected to the control device, and the second flow sensor 5 is arranged in the drainage pipe 6 and located between the drainage pump 2 and the drainage end; the drainage pump 2 is controlled based on the initial drainage speed to start drainage, and then further includes: 301. Obtain a preset normal flow value, a preset flow abnormality duration, and a preset reversal duration, and obtain second real-time flow information fed back by a second flow sensor 5; In this embodiment, the preset normal flow value may be 50% of the maximum flow value, the preset flow abnormality duration may be 10 seconds, and the preset reversal duration may be 10-15 seconds.

[0032] 302. If the second real-time flow information fed back by the second flow sensor 5 is lower than the preset normal flow value and the duration is longer than the preset flow abnormality duration, the working mode of the drainage pump 2 is adjusted to the reverse mode; In this embodiment, during the drainage process of the drainage pump 2, once the control device detects that the drainage flow rate is abnormally reduced and this state lasts for more than 10 seconds, it will quickly determine that there may be a pipe blockage problem; at this time, the control device will automatically start the reverse operation function of the drainage pump 2, reverse at a low speed for 10 to 15 seconds, and try to clear the blockage in the pipe; this operation can effectively avoid problems such as poor drainage or equipment damage caused by long-term pipe blockage; after trying to clear the blockage, the system will restore the forward drainage function of the drainage pump 2 to ensure the continuity and stability of the drainage process.

[0033] 303. When the duration of the reverse rotation mode is longer than the preset reverse rotation duration, the working mode of the drainage pump 2 is adjusted to the forward rotation mode; In this embodiment, after the working mode of the drainage pump 2 is adjusted to the forward mode, if the second real-time flow information fed back by the second flow sensor 5 is lower than the preset normal flow value and the duration is longer than the preset flow abnormality duration, the drainage pump 2 is controlled to stop working and a pipeline blockage abnormality instruction is generated to remind the staff to clean the pipeline in time.

[0034] See also Figure 4 In the embodiment of the present invention, the determining of the initial drainage speed of the drainage pump 2 based on the current liquid level information includes: 401. Confirm load information based on the current liquid level information and obtain cleaning mode information; In this embodiment, the current liquid level sensor data is read to determine the amount of detergent and water, that is, the current liquid level information, and the current number of tableware sets and the weight of the tableware, that is, the load information, are calculated based on the current liquid level information; then, the cleaning mode selected by the user is obtained through the user interface or a preset program, such as quick wash, standard wash, strong wash, etc.

[0035] 402. Acquire historical drainage information based on the load information and the cleaning mode information, and integrate the current liquid level information, the load information, and the historical drainage information to obtain input data; In this embodiment, the historical drainage information includes 3-5 historical drainage times corresponding to the load information and the cleaning mode; by automatically collecting and integrating the current liquid level information, load information and historical drainage information, intelligent prediction and control of the drainage process of the washing equipment are realized; not only the need for manual intervention is greatly reduced, but also the washing efficiency is significantly improved, making the entire washing process smoother and more efficient.

[0036] 403. Input the input data into the pre-trained ARIMA model and the pre-trained LSTM model respectively to obtain a first prediction result and a second prediction result; In this embodiment, the pre-trained ARIMA (p, d, q) model consists of three parts: autoregression (AR), difference (I) and moving average (MA); wherein p is the autoregression order, which reflects the linear relationship between the current value and the past p values; d is the difference order, which is used to stabilize the non-stationary time series; q is the moving average order, which reflects the relationship between the current value and the past q prediction errors; by performing a stationarity test on the historical drainage data, appropriate p, d, q values ​​are determined, so as to establish an ARIMA model that can effectively capture the short-term linear dependency of the drainage data; and the pre-trained LSTM model is a special recurrent neural network, which solves the long-term dependency problem in RNN by introducing input gates, forget gates and output gates; when processing drainage data, the input gate controls the input of new information, the forget gate determines whether to retain or discard old information in the memory unit, and the output gate determines the output value; the LSTM model can automatically learn complex nonlinear patterns in drainage data, such as the complex relationship between drainage water volume, load information and drainage time under different combinations of tableware quantity and washing mode; LSTM The model can remember long-term information and is very effective for analyzing drainage data with long-term dependent characteristics.

[0037] 404. Based on the preset weights, the first prediction result and the second prediction result are fused in a weighted average manner to obtain a drainage time prediction result; In this embodiment, the prediction results of the ARIMA model and the LSTM model are fused in a weighted average manner, that is, the drainage time prediction result = w1 × the first prediction result + w2 × the second prediction result; the weights w1 and w2 are determined through a large number of experiments and verifications; in the training process, different weight combinations are used to predict historical data, and the errors between the prediction results and the actual values ​​are calculated, such as the root mean square error (RMSE), the mean absolute error (MAE), etc.; by comparing the error sizes under different weight combinations, the weight value that minimizes the error is selected as the final fusion weight; for example, w1=0.4, w2=0.6, at this time, the prediction error between the drainage time and the current liquid level information and the load information is minimized.

[0038] Furthermore, in this embodiment, the model is flexibly adjusted according to different current liquid level information, different load information and cleaning mode information to adapt to the drainage needs in different scenarios; whether it is light load or heavy load, whether it is ordinary cleaning or deep cleaning, it can provide accurate drainage time prediction, which greatly improves the versatility and adaptability of the solution and meets the diverse needs of users.

[0039] Furthermore, in this embodiment, when the drainage time prediction result exceeds the physical limit, that is, exceeds the maximum continuous working time of the drainage pump 2, the control device will not output the drainage work start instruction, and will issue an alarm to prevent the drainage pump 2 from being damaged due to excessive work.

[0040] 405. Obtain a performance curve of the drainage pump 2, and confirm an initial drainage speed of the drainage pump 2 based on the drainage time prediction result and the performance curve of the drainage pump 2; In this embodiment, the predicted drainage time is matched with the performance curve of the drainage pump 2 to determine the speed range that meets the predicted drainage time requirement; then, a suitable initial drainage speed is selected within this speed range, and the speed should ensure that the drainage pump 2 can operate efficiently while meeting the drainage requirements; through the aforementioned scheme, precise control of the energy consumption of the drainage pump 2 is achieved, which not only extends the service life of the drainage pump 2, but also significantly reduces energy consumption, thereby achieving the purpose of energy saving and consumption reduction.

[0041] Furthermore, in the present embodiment, during the operation of the drainage pump 2, the first flow sensor 4 collects first real-time flow information in real time, and the control device compares the first real-time flow information with the drainage time prediction result; if the comparison result shows that the drainage time predicted according to the current speed is close to or may even exceed the expected drainage time, the power of the drainage pump 2 is appropriately increased to ensure drainage efficiency and avoid delays; on the contrary, if the comparison result shows that the drainage time predicted according to the current speed is less than the expected drainage time, the control device will reduce the power of the drainage pump 2 accordingly; by flexibly adjusting the drainage speed of the drainage pump 2, not only can the smooth completion of the drainage task be guaranteed, but also the energy consumption can be effectively reduced to achieve the goal of energy conservation and emission reduction.

[0042] See also Figure 5 In the embodiment of the present invention, when the preset drainage stop condition is met, the drainage pump 2 is controlled to stop working, and the residual water pump 3 is controlled to start working, including: 501. Obtain a preset minimum water level threshold value. When the real-time liquid level information fed back by the liquid level sensor is lower than the preset minimum water level threshold value, control the drainage pump 2 to stop working; In this embodiment, the minimum water level threshold is pre-set by the staff according to the operating environment and operating parameters of the washing equipment.

[0043] 502. Confirm the initial operating frequency of the residual water pump 3 according to the real-time liquid level information, and control the residual water pump 3 to start working based on the confirmed initial operating frequency.

[0044] In this embodiment, the residual water pump 3 is an electromagnetic diaphragm pump, which has higher suction accuracy and stability, and its diaphragm movement frequency can be accurately adjusted between 5-15 times per second; in the residual water drainage stage, that is, the working stage of the residual water pump 3, the operating frequency of the diaphragm is adjusted according to the detected residual water volume, that is, the detected real-time liquid level information; specifically, for a small amount of residual water, it is operated at a lower frequency (such as 5 times per second) to avoid energy waste caused by excessive drainage; when the residual water volume is slightly more, the frequency is increased to 10-15 times per second to ensure that the residual water is quickly drained; the amount of residual water is pre-set by the designer in the control device.

[0045] See also Figure 6 In the embodiment of the present invention, the step of obtaining the first real-time flow information fed back by the first flow sensor 4 and determining whether the preset zero residual water condition is met according to the first real-time flow information includes: 601. Acquire first real-time flow information fed back by the first flow sensor 4, and perform denoising processing on the first real-time flow information by using Kalman filtering to obtain denoised flow information; 602. Obtain a preset detection time and a preset minimum flow threshold. If the denoised flow information is continuously lower than the preset minimum flow threshold within the preset detection time, it indicates that the preset zero residual water condition is met.

[0046] In this embodiment, the preset detection time may be 2 seconds, and the preset minimum flow threshold may be zero, that is, no water flows through the drainage pipe 6 .

[0047] In this embodiment, by obtaining the first real-time flow information fed back by the first flow sensor 4 and performing denoising processing using Kalman filtering technology, more accurate and reliable denoised flow information can be obtained, which effectively reduces the interference of noise on flow monitoring and improves the accuracy of flow data; further, through the judgment mechanism of step 602, the zero residual water state in the pipeline or equipment can be discovered in time, which provides a timely and accurate basis for subsequent maintenance and processing, and helps to avoid the occurrence of potential safety hazards.

[0048] See also Figure 7 In an embodiment of the present invention, the washing appliance further comprises a plasma deodorizing device, and the plasma deodorizing device is used to remove the odor in the water cup 1. If the above conditions are met, the residual water pump 3 is controlled to stop working, and then the following conditions are further comprised: 701. Obtaining real-time liquid level information fed back by a liquid level sensor; 702. If the real-time liquid level information is lower than the preset minimum water level threshold, and the lowest point of the air outlet of the plasma deodorization device is higher than the water level surface expressed by the liquid level sensor, the plasma deodorization device is controlled to start working; 703. If the real-time liquid level information is greater than or equal to the preset safety water level threshold, an abnormal alarm instruction is generated.

[0049] In this embodiment, during the drainage process, although there is a liquid level sensor to detect the water level, abnormal situations may still occur; the reasons may include liquid level sensor failure or error, such as long-term use, environmental factors or physical damage resulting in reduced accuracy or failure, and improper installation position or inaccurate calibration resulting in reading errors; in addition, software or hardware failures of the control device may result in the inability to properly receive, process or respond to sensor data, such as program errors, insufficient memory or communication failures; further, drainage system failures, such as pipe blockages, leaks or design defects, may also result in ineffective drainage; therefore, before starting the plasma deodorization device, it is necessary to re-perform a water level detection to ensure that all safety measures are in place to avoid any unexpected situations during operation.

[0050] In this embodiment, when the real-time liquid level information is lower than the preset minimum water level threshold, the control device controls the plasma deodorization device to start working immediately. This mechanism not only effectively prevents the odor problem that may be caused by too low water level, but also greatly improves the efficiency and effect of environmental control, ensuring the freshness and comfort of the working environment; when the real-time monitored liquid level information reaches or exceeds the preset safety water level threshold, the control device controls the plasma deodorization device to be in a non-working state to prevent water from flowing back into the plasma deodorization device, thereby avoiding possible damage or failure, and ensuring the stable and safe operation of the plasma deodorization device; further, the control device quickly generates an abnormal alarm instruction to remind the staff to take timely countermeasures.

[0051] The above describes the drainage method of the washing appliance in the embodiment of the present invention. The following describes the drainage device of the washing appliance in the embodiment of the present invention. Figure 8 , an embodiment of the washing appliance drainage device in the embodiment of the present invention includes: The first control module 801 is used to control the drainage pump 2 to start drainage when receiving a drainage instruction; The second control module 802 is used to control the drainage pump 2 to stop working and control the residual water pump 3 to start working when a preset drainage stop condition is met; The judgment module 803 is used to obtain the first real-time flow information fed back by the first flow sensor 4, and judge whether the preset zero residual water condition is met according to the first real-time flow information; The third control module 804 is used to control the residual water pump 3 to stop working if the condition is met.

[0052] Based on the same idea as the method in the above embodiment, the device provided by the present application can implement the method in the above embodiment.

[0053] above Figure 8 The washing appliance drainage device in the embodiment of the present invention is described in detail from the perspective of modular functional entities. The washing appliance drainage device in the embodiment of the present invention is described in detail from the perspective of hardware processing.

[0054] Fig. 91 is a schematic diagram of the structure of a washing appliance drainage device provided by an embodiment of the present invention. The washing appliance drainage device 900 may have relatively large differences due to different configurations or performances, and may include one or more processors (central processing units, CPU) 910 (for example, one or more processors) and a memory 920, and one or more storage media 930 (for example, one or more mass storage devices) storing application programs 933 or data 932. Among them, the memory 920 and the storage medium 930 can be short-term storage or permanent storage. The program stored in the storage medium 930 may include one or more modules (not shown in the figure), and each module may include a series of instruction operations in the washing appliance drainage device 900. Furthermore, the processor 910 may be configured to communicate with the storage medium 930, and execute a series of instruction operations in the storage medium 930 on the washing appliance drainage device 900 to implement the steps of the washing appliance drainage method provided by the above-mentioned method embodiments.

[0055] The washing appliance drainage device 900 may also include one or more power supplies 940, one or more wired or wireless network interfaces 950, one or more input and output interfaces 960, and / or one or more operating systems 931, such as Windows Server, Mac OS X, Unix, Linux, FreeBSD, etc. It will be appreciated by those skilled in the art that Fig. 9 The structure of the washing appliance drainage device shown does not constitute a limitation on the washing appliance drainage device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0056] The present invention also provides a computer-readable storage medium, which may be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium. Instructions are stored in the computer-readable storage medium. When the instructions are executed on a computer, the computer executes the steps of the method for draining water from a washing appliance.

[0057] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device or unit described above can refer to the corresponding process in the aforementioned method embodiment and will not be repeated here.

[0058] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or the whole or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program code.

[0059] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for draining water from a washing appliance, characterized in that: The washing appliance comprises a control device and a water cup, and a drainage pump, a residual water pump and a first flow sensor electrically connected to the control device respectively, the drainage end of the water cup is connected to the drainage pump and the residual water pump respectively through a drainage pipe, and the first flow sensor is arranged in the drainage pipe and located between the drainage pump and the residual water pump; the drainage method comprises: When receiving the drainage instruction, the drainage pump is controlled to start the drainage work; When the preset drainage stop condition is met, the drainage pump is controlled to stop working, and the residual water pump is controlled to start working; Acquire first real-time flow information fed back by the first flow sensor, and determine whether a preset zero residual water condition is met according to the first real-time flow information; If satisfied, the residual water pump is controlled to stop working.

2. The method for draining water from a washing appliance according to claim 1, characterized in that: The washing appliance further includes a liquid level sensor electrically connected to the control device, wherein the liquid level sensor is disposed in the water cup, and when receiving a drainage instruction, the drainage pump is controlled to start drainage work, including: When receiving a drainage instruction, obtain the current liquid level information fed back by the liquid level sensor; The initial drainage speed of the drainage pump is confirmed based on the current liquid level information, and the drainage pump is controlled to start drainage work based on the confirmed initial drainage speed.

3. The method for draining water from a washing appliance according to claim 2, characterized in that: The washing appliance further includes a second flow sensor electrically connected to the control device, the second flow sensor being arranged in the drainage pipe and between the drainage pump and the drainage end; the drainage pump is controlled based on the initial drainage speed to start drainage, and then further includes: Obtaining a preset normal flow value, a preset flow abnormality duration, and a preset reversal duration, and obtaining second real-time flow information fed back by a second flow sensor; If the second real-time flow information fed back by the second flow sensor is lower than the preset normal flow value and the duration is longer than the preset flow abnormality duration, the working mode of the drainage pump is adjusted to the reverse mode; When the duration of the reverse mode is longer than the preset reverse duration, the working mode of the drainage pump is adjusted to the forward mode.

4. The method for draining water from a washing appliance according to claim 3, characterized in that: The determining the initial drainage speed of the drainage pump based on the current liquid level information includes: confirming load information based on the current liquid level information and acquiring cleaning mode information; Acquire historical drainage information based on the load information and the cleaning mode information, and integrate the current liquid level information, the load information, and the historical drainage information to obtain input data; Inputting the input data into a pre-trained ARIMA model and a pre-trained LSTM model respectively to obtain a first prediction result and a second prediction result; Based on the preset weights, the first prediction result and the second prediction result are fused in a weighted average manner to obtain a drainage time prediction result; A performance curve of the drainage pump is obtained, and an initial drainage rotation speed of the drainage pump is confirmed based on the drainage time prediction result and the performance curve of the drainage pump.

5. The method for draining water from a washing appliance according to claim 2, characterized in that: When the preset drainage stop condition is met, the drainage pump is controlled to stop working, and the residual water pump is controlled to start working, including: Obtain a preset minimum water level threshold value, and when the real-time liquid level information fed back by the liquid level sensor is lower than the preset minimum water level threshold value, control the drainage pump to stop working; The initial operating frequency of the residual water pump is confirmed according to the real-time liquid level information, and the residual water pump is controlled to start working based on the confirmed initial operating frequency.

6. The method for draining water from a washing appliance according to claim 1, characterized in that: The step of obtaining first real-time flow information fed back by the first flow sensor and determining whether a preset zero residual water condition is met according to the first real-time flow information includes: Acquire first real-time flow information fed back by a first flow sensor, and perform denoising processing on the first real-time flow information by using a Kalman filter to obtain denoised flow information; The preset detection time and the preset minimum flow threshold are obtained. If the denoised flow information is continuously lower than the preset minimum flow threshold within the preset detection time, it indicates that the preset zero residual water condition is met.

7. The method for draining water from a washing appliance according to claim 5, characterized in that: The washing appliance further includes a plasma deodorizing device, which is used to remove the odor in the water cup. If the above conditions are met, the residual water pump is controlled to stop working, and then the following is further included: Obtain real-time liquid level information fed back by the liquid level sensor; If the real-time liquid level information is lower than the preset minimum water level threshold, and the lowest point of the air outlet of the plasma deodorization device is higher than the water level surface expressed by the liquid level sensor, the plasma deodorization device is controlled to start working; If the real-time liquid level information is greater than or equal to the preset safe water level threshold, an abnormal alarm instruction is generated.

8. A drainage device for a washing appliance, characterized in that: include: The first control module is used to control the drainage pump to start drainage when receiving a drainage instruction; The second control module is used to control the drainage pump to stop working and control the residual water pump to start working when the preset drainage stop condition is met; A judgment module, used for obtaining first real-time flow information fed back by the first flow sensor, and judging whether a preset zero residual water condition is met according to the first real-time flow information; The third control module is used to control the residual water pump to stop working if the conditions are met.

9. A washing appliance drainage device, characterized in that: The washing appliance drainage device comprises: a memory and at least one processor, wherein instructions are stored in the memory; At least one of the processors calls the instructions in the memory to enable the washing appliance drainage device to execute each step of the washing appliance drainage method according to any one of claims 1 to 7.

10. A computer-readable storage medium having instructions stored thereon, characterized in that: When the instructions are executed by the processor, the various steps of the method for draining water from a washing appliance as described in any one of claims 1 to 7 are implemented.

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