Drainage control methods, devices and storage media

Abstract

This invention discloses a drainage control method, device, and storage medium. The method includes: detecting drainage obstruction during the drainage process of a laundry processing device based on changes in the water level in the washing tub; determining that drainage obstruction has been detected, controlling the opening and closing of the drain pump and / or drain valve to adjust the air pressure state of the connecting pipe between the drain pump and the drain valve. During the drainage process, drainage obstruction is detected in real time. When obstruction is detected, it indicates that air or air bubbles remain in the connecting pipe between the drain pump and the drain valve, preventing the drain pump from pumping water. Therefore, by controlling the opening and closing of the drain pump and / or drain valve, the air pressure state of the connecting pipe between the drain pump and the drain valve is changed, thereby changing the pressure difference between the drain valve and the drain pump to expel the air or air bubbles in the connecting pipe, ensuring normal water pumping, reducing drainage time, avoiding drainage abnormality alarms, and thus improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of home appliance control technology, specifically to a drainage control method, device, and storage medium. Background Technology

[0002] This section provides only background information related to the present invention and is not necessarily prior art.

[0003] Clothing handling equipment is one of the most commonly used household appliances in daily life. It typically includes washing machines, drying machines, and washer-dryer combos. Washing machines generally include top-loading washing machines and front-loading washing machines. Front-loading washing machines mostly use a top-drainage system, which is not limited by the location of the user's indoor drain, allowing them to be placed anywhere.

[0004] Most top-drainage systems require the assistance of a drainage pump, such as Figure 1 The schematic diagram of the top-drain model shows that the drain valve located below the washing tub is connected to the drain pump via a connecting pipe. The drain pump continuously pumps water from the connecting pipe into the arched drain pipe and then discharges it.

[0005] However, during the drainage process, air may enter the connecting pipe, causing the drain pump to fail to pump out water. This results in the water in the washing tub not being able to drain or draining very slowly, which in turn triggers a drainage abnormality alarm and leads to a poor user experience. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the prior art by providing a drainage control method, apparatus, and storage medium, which is achieved through the following technical solutions.

[0007] A first aspect of the present invention provides a drainage control method, the method comprising:

[0008] The drainage problem in the laundry processing equipment is detected by measuring the water level change in the washing tub.

[0009] If poor drainage is detected, control the opening and closing of the drain pump and / or drain valve to regulate the air pressure in the connecting pipe between the drain pump and the drain valve.

[0010] In some embodiments of this application, controlling the opening and closing of the drainage pump and / or drainage valve includes: controlling the opening and closing of the drainage pump and / or drainage valve based on the cumulative number of times the drainage is currently obstructed.

[0011] In some embodiments of this application, detecting drainage problems during the drainage process of the laundry treatment equipment based on changes in the water level in the washing tub includes:

[0012] Detect the water level change in the washing tub; use the water level change value to detect drainage problems.

[0013] In some embodiments of this application, detecting drainage problems based on the water level change value includes:

[0014] If the cumulative number of times the drainage is obstructed is less than or equal to a preset threshold number, the water level change value is compared with a first threshold, and if the water level change value is less than the first threshold, it is determined that there is drainage obstruction; if the cumulative number of times the drainage is obstructed is greater than the preset threshold number, the water level change value is compared with a second threshold, and if the water level change value is less than the second threshold, it is determined that there is drainage obstruction; wherein, the first threshold is greater than the second threshold.

[0015] In some embodiments of this application, the method further includes:

[0016] When the cumulative number of times reaches the preset upper limit, a drainage abnormality alarm is output.

[0017] In some embodiments of this application, controlling the opening and closing of the drainage pump and / or drainage valve based on the cumulative number of times the drainage is currently obstructed includes:

[0018] Based on the cumulative number of times falling within the first number range, the number of intermittent first cycles of the drainage pump is controlled.

[0019] In some embodiments of this application, controlling the opening and closing of the drainage pump and / or drainage valve based on the cumulative number of times the drainage is currently obstructed includes:

[0020] Based on the cumulative number of times falling within the second interval, first shut down the drain pump, then shut down the drain valve. After a delay, first open the drain valve, then open the drain pump, and control the drain pump to run intermittently for the second cycle.

[0021] In some embodiments of this application, controlling the opening and closing of the drainage pump and / or drainage valve based on the cumulative number of times the drainage is currently obstructed includes:

[0022] If the cumulative number of times falls within the third interval, first turn off the drain pump, control the washing tub to rotate for a preset time, and then turn the drain pump back on.

[0023] In some embodiments of this application, controlling the opening and closing of the drainage pump and / or drainage valve based on the cumulative number of times the drainage is currently obstructed includes:

[0024] Based on the cumulative number of times being within the fourth number range, after controlling the drainage pump to run intermittently for the third cycle, first shut down the drainage pump and then close the drainage valve. After a delay, open the drainage valve and control the drainage pump to run intermittently for the fourth cycle.

[0025] In some embodiments of this application, the method further includes:

[0026] Once the drainage start signal is detected, first open the drain valve, then start the drain pump.

[0027] In some embodiments of this application, the method further includes:

[0028] Once a drainage completion signal is detected, first shut down the drainage pump, then close the drainage valve.

[0029] In some embodiments of this application, the method further includes:

[0030] During the drainage process, the cumulative drainage time is recorded; if the cumulative drainage time exceeds the drainage limit and no drainage end signal is detected, a drainage abnormality alarm is output.

[0031] A second aspect of the present invention provides a drainage control device, the device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor, when executing the computer program, implements the steps of the method described in the first aspect above.

[0032] A third aspect of the present invention provides a garment processing device, including a drainage control device as described in the second aspect above; a drain valve disposed at the bottom of the garment processing device; a drain pump disposed at the bottom of the garment processing device, wherein the drain valve is connected to the pumping end of the drain pump via a connecting pipe, and the outlet end of the drain pump is connected to a drain pipe.

[0033] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the steps of the method described in the first aspect above.

[0034] Based on the drainage control method, apparatus, and storage medium described in the first to fourth aspects above, the technical solution of the present invention has the following beneficial effects or advantages:

[0035] During the drainage process, the garment processing equipment detects drainage problems in real time. When drainage problems are detected, it indicates that air or air bubbles remain in the connecting pipe between the drain pump and the drain valve, preventing the drain pump from pumping out water. Therefore, by controlling the opening and closing of the drain pump and / or the drain valve, the air pressure in the connecting pipe between the drain pump and the drain valve is changed, thereby altering the pressure difference between the drain valve and the drain pump. This allows the air or air bubbles in the connecting pipe to be expelled, ensuring the drain pump pumps water normally, reducing drainage time, avoiding abnormal drainage alarms, and thus improving the user experience. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram illustrating the structure of a top-drainage machine according to an exemplary embodiment of the present invention;

[0038] Figure 2 This is a schematic flowchart illustrating an embodiment of a drainage control method according to an exemplary embodiment of the present invention;

[0039] Figure 3 This is a schematic diagram illustrating a specific implementation process of controlling the opening and closing of a drainage pump and / or drainage valve based on the cumulative number of times the drainage is obstructed, according to an exemplary embodiment of the present invention.

[0040] Figure 4 This is a schematic diagram illustrating a specific process of a drainage control method according to an exemplary embodiment of the present invention;

[0041] Figure 5 This is a schematic diagram of the hardware structure of a drainage control device according to an exemplary embodiment of the present invention;

[0042] Figure 6 This is a schematic diagram illustrating the structure of a storage medium according to an exemplary embodiment of the present invention.

[0043] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0045] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0046] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0049] See Figure 1 The garment processing equipment shown in the top-drainage model includes a drain valve and a drain pump located at the bottom of the garment processing equipment. The drain valve is connected to the pumping end of the drain pump via a connecting pipe, and the outlet end of the drain pump is connected to a drain pipe.

[0050] During drainage, both the drain valve and the drain pump are opened. Since the washing tub is connected to the connecting pipe, the water in the washing tub continuously flows into the connecting pipe under the action of gravity or pressure, and the drain pump pumps the water in the connecting pipe into the drain pipe for discharge.

[0051] However, due to equipment assembly issues or differences in components, air or air bubbles may enter the connecting pipe with the water during the drainage process. If a large amount of air remains in the connecting pipe, the drain pump will run dry and will be unable to pump the water out of the connecting pipe. This will cause the water in the washing tub to be unable to drain or to drain very slowly, which will trigger a drainage abnormality alarm and bring a bad user experience.

[0052] To address the issue of poor drainage in top-drainage pumps, this application proposes a drainage control method. This method involves real-time detection of drainage obstruction during the drainage process. When obstruction is detected, it indicates the presence of air or air bubbles in the connecting pipe between the drainage pump and the drainage valve, preventing the pump from drawing water. By controlling the opening and closing of the drainage pump and / or the drainage valve, the air pressure in the connecting pipe is adjusted, changing the pressure difference between the pump and the valve. This forces the air or air bubbles out of the connecting pipe, ensuring the pump can draw water normally, reducing drainage time, preventing drainage abnormality alarms, and ultimately improving the user experience.

[0053] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0054] Example 1:

[0055] Figure 2 This is a schematic flowchart illustrating an embodiment of a drainage control method according to an exemplary embodiment of the present invention. The garment processing equipment to which the drainage control method is applicable is a top-drainage type device, which can specifically be a washing machine, or a washer-dryer combo; this application does not specifically limit it in this regard. The following is in conjunction with the above... Figure 1 The structure of the top-drainage machine shown illustrates the drainage control method proposed in this application.

[0056] like Figure 2 As shown, the drainage control method includes the following steps:

[0057] Step 201: Detect drainage problems during the drainage process of the laundry processing equipment based on the water level change value in the washing tub.

[0058] Poor drainage refers to water failing to drain from the washing tub or draining very slowly. It's important to note that during the drainage process, the garment processing equipment needs to continuously monitor for drainage problems and intervene promptly to improve drainage efficiency and reduce drainage time.

[0059] In one specific implementation, when detecting changes in water level, the current water level in the washing tub can be recorded first. After a certain period of time, such as waiting 20 seconds, the water level in the washing tub can be recorded again. The difference between the two recorded water levels can then be used as the water level change value.

[0060] It should be noted that the number of times drainage problems occur during the entire drainage process can also be counted. That is, each time a drainage problem is detected, the cumulative number of drainage problems is incremented by 1, so that drainage can be adjusted based on the current cumulative number of drainage problems.

[0061] The cumulative number of drainage problems reflects the severity of the drainage problem during the drainage process. The higher the cumulative number, the more serious the air or air bubbles are left in the connecting pipe, and the slower the drainage.

[0062] Furthermore, when detecting drainage problems based on water level changes, it is also necessary to combine the cumulative number of drainage problems for detection in order to accurately detect the drainage problem.

[0063] In one specific implementation, the cumulative number of drainage problems is compared with a preset threshold number. If the cumulative number is less than or equal to the preset threshold number, the water level change value is compared with a first threshold. If the water level change value is less than the first threshold, drainage problems are determined to exist. If the cumulative number is greater than the preset threshold number, the water level change value is compared with a second threshold. If the water level change value is less than the second threshold, drainage problems are determined to exist.

[0064] The first threshold is greater than the second threshold, and the preset cutoff number refers to the cutoff value for changing the drainage sluggishness detection conditions. When the cumulative number of drainage sluggishness events is less than or equal to the preset cutoff number, it indicates that drainage problems occurred in the early stages, which is determined by comparing a relatively large first threshold with the water level change value. When the cumulative number of drainage sluggishness events is greater than the preset cutoff number, it indicates that air or air bubbles remain in the connecting pipe, and the drainage problem has not been well resolved. Therefore, a relatively small second threshold is used to compare with the water level change value to further strengthen the drainage sluggishness detection conditions.

[0065] Step 202: If drainage is found to be obstructed, control the opening and closing of the drain pump and / or drain valve to adjust the air pressure in the connecting pipe between the drain pump and the drain valve.

[0066] If a problem with poor drainage is detected, it indicates that residual air or air bubbles in the connecting pipe are preventing the drain pump from drawing water or causing the water in the washing tub to drain very slowly or not at all. By controlling the opening and closing of the drain pump and / or drain valve, the air pressure in the connecting pipe between the drain pump and the drain valve can be adjusted to change the pressure difference between the drain valve and the drain pump, thereby expelling the air or air bubbles in the connecting pipe and ensuring that the drain pump can draw water normally.

[0067] In one possible implementation, the opening and closing of the drain pump and / or drain valve can be controlled based on the cumulative number of times the drainage is obstructed, so as to regulate the air pressure status of the connecting pipe between the drain pump and the drain valve.

[0068] Since the drain pump and drain valve are the main components for drainage, the opening and closing of these drain pumps and drain valves will cause changes in the airflow in the connecting pipe. Therefore, this embodiment achieves the purpose of regulating the air pressure state of the connecting pipe by controlling the opening and closing of the drain pump and drain valve.

[0069] Since the cumulative number of drainage failures reflects the severity of the drainage problem, the opening and closing of the drainage pump and / or drainage valve can be controlled based on the current cumulative number of failures, which can better adjust the air pressure status of the connecting pipe.

[0070] Furthermore, the cumulative number of times the drainage is obstructed can be compared with the preset upper limit. If the cumulative number has not yet reached the preset upper limit, the opening and closing of the drainage pump and / or drainage valve can be controlled based on the cumulative number to adjust the drainage. If the cumulative number has reached the preset upper limit, it means that the air or air bubbles remaining in the connecting pipe are already very serious. Even if the drainage has been adjusted in the previous few times, the drainage problem has not been relieved. In this case, a drainage abnormality alarm will be output to prompt the user to intervene.

[0071] The preset upper limit refers to the maximum number of times drainage is obstructed. In other words, before the cumulative number of obstructions reaches the preset upper limit, the drainage components are controlled to adjust the air pressure in the connecting pipe, expelling air or bubbles and alleviating the drainage problem. However, when the cumulative number of obstructions reaches the preset upper limit, it indicates that even after the previous drainage adjustments, the problem remains unresolved, and a drainage anomaly alarm should be issued to alert the user.

[0072] It should be noted that for the specific implementation of controlling the opening and closing of the drainage pump and / or drainage valve based on the cumulative number of times the drainage is not smooth, please refer to the relevant description in the following embodiments, which will not be described in detail in the embodiments of this application.

[0073] In another alternative embodiment, to ensure that no air remains in the drain start and drain end connection pipes, the drain valve can be opened first, and then the drain pump can be turned on when the drain start signal is detected.

[0074] In this process, the drain valve is opened first, at which point the drain pump is turned off, and the water in the washing tub fills the connecting pipe, leaving no air residue in the connecting pipe. Then, the drain pump is turned on, which can pump the water out of the connecting pipe, while water from the washing tub also continuously enters the connecting pipe through the drain valve.

[0075] For example, the drain start signal can be triggered by the end signal of the washing or rinsing phase.

[0076] Furthermore, upon detecting a signal indicating the end of drainage, the drainage pump can be shut off first, followed by the drainage valve.

[0077] First, turn off the drain pump. At this time, the drain valve is still open. The water remaining in the drain pipe will not fall back into the connecting pipe, but the water in the washing tub will fill the connecting pipe under pressure or gravity. In this way, there is no obvious air in the connecting pipe. Then, close the drain valve to ensure that the connecting pipe is full of water and there is no residual air, thus preparing for the next drainage.

[0078] For example, the drainage end signal can be triggered by the water level in the washing tub dropping to an empty level.

[0079] Regarding the process of steps 201 to 202 above, in an optional embodiment, starting from the detection of the start drainage signal, the total drainage time of the entire drainage process is monitored by statistically calculating the cumulative drainage time. If the cumulative drainage time exceeds the drainage limit time and no drainage end signal is detected, it indicates that the drainage time has exceeded the maximum limit time and has not been completed. A drainage abnormality alarm is output to prompt the user to check the cause.

[0080] This completes the above. Figure 2 The drainage control process shown detects drainage obstruction in real time. When obstruction is detected, it indicates that air or air bubbles remain in the connecting pipe between the drainage pump and the drainage valve, preventing the drainage pump from pumping water. By controlling the opening and closing of the drainage pump and / or the drainage valve, the air pressure in the connecting pipe between the drainage pump and the drainage valve is adjusted, thereby changing the pressure difference between the drainage valve and the drainage pump. This forces the air or air bubbles out of the connecting pipe, ensuring the drainage pump can pump water normally, reducing drainage time, avoiding drainage abnormality alarms, and thus improving the user experience.

[0081] It should be noted that, based on the above Figure 2 Based on the illustrated embodiment, regarding the specific process of controlling the opening and closing of the drainage pump and / or drainage valve based on the cumulative number of times drainage is obstructed, the maximum limit number of times drainage is obstructed can be divided into multiple intervals. When the cumulative number of times drainage is obstructed falls within different intervals, different drainage correction strategies are used to control the drainage components to adjust the air pressure state of the connecting pipe. The following example illustrates the specific implementation of controlling the drainage components based on the cumulative number of times, using four different intervals, each corresponding to a different drainage correction strategy. The four intervals are arranged in descending order as follows: first interval, second interval, third interval, and fourth interval. Assuming the maximum limit number of times drainage is obstructed is 9 times, for example, the first interval is 1-2, the second interval is 3-4, the third interval is 5-6, and the fourth interval is 7-8.

[0082] Figure 3This is a schematic diagram illustrating a specific implementation process of the present invention, according to an exemplary embodiment, of controlling the opening and closing of a drain pump and / or drain valve based on the cumulative number of times drainage is obstructed. The drainage assembly includes a drain valve, a drain pump, and a washing tub. Figure 3 As shown, the specific implementation process of controlling the opening and closing of the drainage pump and / or drainage valve based on the cumulative number of times includes the following steps:

[0083] Step 301: Based on the cumulative number of times falling within the first number range, control the number of times the drainage pump intermittently runs for the first cycle.

[0084] When the cumulative number of occurrences falls within the range of the first occurrence, it indicates that drainage problems have occurred initially. In this case, the air pressure in the connecting pipe can be adjusted by controlling the on / off sequence of the drainage pump. This involves intermittently running the drainage pump to change its pumping action, thereby altering the air pressure in the connecting pipe and forcing the air out.

[0085] Intermittent operation of the drainage pump refers to the drainage pump being turned off for m seconds and then turned on for n seconds, repeating this cycle for the first number of cycles.

[0086] It is understandable that the shut-off time m and the opening time n of the drainage pump in each cycle can be the same or different.

[0087] Step 302: Based on the cumulative number of times being in the second interval, first turn off the drain pump, then turn off the drain valve. After a delay, first open the drain valve, then turn on the drain pump, and control the drain pump to run intermittently for the second cycle.

[0088] When the cumulative number of times falls within the second interval, it indicates that drainage problems occurred in the early stage. Even after adjusting the drainage using the correction strategy in step 301, the drainage problems still exist, and the residual air in the connecting pipe still affects the normal pumping of the drainage pump. Therefore, the opening and closing timing control of the drainage valve is further added. That is, by controlling the drainage pump and drainage valve to adjust the air pressure state of the connecting pipe with different opening and closing timings, the air is squeezed out.

[0089] First, turn off the drain pump. The water in the drain pipe will not fall back into the connecting pipe. Under the action of gravity or pressure, the water in the washing tub will rush into the connecting pipe as much as possible. After a delay, close the drain valve to cut off the washing tub from the connecting pipe, ensuring that the connecting pipe is full of water and squeezing out the air. After a delay, turn on the drain pump to pump water and control the drain pump to run intermittently. Because the connecting pipe is shaking and the air pressure changes during the drain pump operation, the air in the connecting pipe is squeezed out by intermittently switching the drain pump on and off.

[0090] Step 303: Based on the cumulative number of times being in the third interval, first turn off the drain pump, control the washing tub to rotate for a preset time, and then turn the drain pump back on.

[0091] When the cumulative number of occurrences falls within the third interval, it indicates that drainage problems occurred in the middle stage. After adjusting the drainage using the correction strategies in steps 301 and 302, the drainage problems still persisted, and there was significant residual air or air bubbles in the connecting pipe. Therefore, the operation control of the washing tub was further added to the drainage process. This involved turning off the drain pump to prevent residual water in the drain pipe from falling back into the connecting pipe, and then controlling the washing tub to rotate slowly for a certain period of time before stopping. This was done to change the air pressure in the washing tub and the connecting pipe through the airflow changes generated by the rotation of the washing tub, thereby expelling the air.

[0092] Under normal circumstances, the washing tub does not rotate during the drainage process. The purpose of controlling the rotation of the washing tub in this step is to generate airflow changes and alter the air pressure state inside the tub and the connecting pipe.

[0093] Furthermore, in step 303, the rotation speed of the washing tub can be controlled to be lower than the tub rotation speed during the washing or rinsing stages.

[0094] Step 304: Based on the cumulative number of times being in the fourth interval, after controlling the drainage pump to run intermittently for the third cycle, first turn off the drainage pump and then close the drainage valve. After a delay, open the drainage valve and control the drainage pump to run intermittently for the fourth cycle.

[0095] When the cumulative number of times is in the fourth interval, it indicates that drainage problems occurred later. After adjusting the drainage using the correction strategies in steps 301, 302, and 303, the drainage problems still exist, and the air or air bubbles remaining in the connecting pipe are more serious. Therefore, it is necessary to further strengthen the control of the different switching timing of the drain valve and drain pump to squeeze out the air.

[0096] First, control the drain pump to run intermittently for the third cycle to change the pumping action, squeezing out some air. Then, turn off the drain pump and then the drain valve to prevent water in the drain pipe from falling back into the connecting pipe and to ensure that the airflow in the connecting pipe stabilizes. After a delay, open the drain valve to allow water in the washing tub to rush into the connecting pipe as much as possible under gravity or pressure. Then, control the drain pump to run intermittently for the fourth cycle. Through the switching sequence of the drain pump, further squeeze out as much air as possible from the connecting pipe.

[0097] It should be noted that there is no restriction on the order of execution of steps 301 to 304 above. The execution condition of any step is whether the cumulative number of times the drainage is not smooth is within the number range specified in that step.

[0098] It is understood that the opening and closing times of each intermittent operation of the drainage pump in steps 301, 302, and 304 above can be the same or different.

[0099] Furthermore, the drainage correction strategy designs for each frequency interval given above represent the optimal implementations. Of course, the drainage correction strategies for each frequency interval can also be interchanged.

[0100] This completes the above. Figure 3 The control process shown divides the maximum number of drainage failures into four intervals. When the cumulative number of drainage failures falls within different intervals, different drainage correction strategies are used to control the drainage components and adjust the air pressure in the connecting pipe. Furthermore, as the cumulative number of drainage failures increases, the corresponding drainage correction intensity becomes stronger to expel as much air as possible from the connecting pipe, thereby achieving smooth drainage.

[0101] Example 2:

[0102] Figure 4 This is a schematic flowchart illustrating a drainage control method according to an exemplary embodiment of the present invention. Based on the above... Figures 2 to 3 Based on the illustrated embodiment, the drainage control process is further illustrated using four different frequency intervals, each corresponding to a drainage correction strategy. The four frequency intervals are arranged in descending order as follows: first frequency interval, second frequency interval, third frequency interval, and fourth frequency interval. Assuming the maximum limit for drainage obstruction is 5 times, for example, the first frequency interval is 1, the second frequency interval is 2, the third frequency interval is 3, and the fourth frequency interval is 4. The drainage correction strategy for step 301 corresponding to the first frequency interval is defined as correction scheme 1, the drainage correction strategy for step 302 corresponding to the second frequency interval is defined as correction scheme 2, the drainage correction strategy for step 303 corresponding to the third frequency interval is defined as correction scheme 3, and the drainage correction strategy for step 304 corresponding to the fourth frequency interval is defined as correction scheme 4.

[0103] like Figure 4 As shown, the specific process of the drainage control method includes the following steps:

[0104] Step 401: When starting drainage, first open the drain valve and then turn on the drain pump.

[0105] Step 402: Detect the water level change value P1 in the washing tub.

[0106] Step 403: Determine whether P1 is less than the first threshold. If yes, proceed to step 404; otherwise, proceed to step 417.

[0107] Step 404: Invoke and execute the modified solution 1.

[0108] Step 405: Detect the water level change value P2 in the washing tub.

[0109] Step 406: Determine whether P2 is less than the first threshold. If yes, proceed to step 407; otherwise, proceed to step 417.

[0110] Step 407: Invoke and execute the revised solution 2.

[0111] Step 408: Detect the water level change value P3 in the washing tub.

[0112] Step 409: Determine whether P3 is less than the second threshold. If yes, proceed to step 410; otherwise, proceed to step 417.

[0113] Step 410: Invoke and execute the revised solution 3.

[0114] Step 411: Detect the water level change value P4 in the washing tub.

[0115] Step 412: Determine whether P4 is less than the second threshold. If yes, proceed to step 413; otherwise, proceed to step 417.

[0116] Step 413: Invoke and execute the revised solution 4.

[0117] Step 414: Detect the water level change value P5 in the washing tub.

[0118] Step 415: Determine whether P5 is less than the second threshold. If yes, proceed to step 416; otherwise, proceed to step 417.

[0119] Step 416: Output an abnormal drainage alarm.

[0120] Step 417: Continue normal drainage.

[0121] Step 418: When emptying the washing tub, turn off the drain pump first, and then close the drain valve.

[0122] For the specific implementation process of steps 401 to 418 above, please refer to the relevant description in the above embodiments. The embodiments of this application will not be repeated here.

[0123] This completes the above. Figure 4 The specific process for drainage control is shown below.

[0124] The present invention also provides a drainage control device corresponding to the drainage control method provided in the foregoing embodiments, for executing the drainage control method described above.

[0125] Figure 5This is a hardware structure diagram of a drainage control device according to an exemplary embodiment of the present invention. The drainage control device includes: a communication interface 701, a processor 702, a memory 703, and a bus 704; wherein the communication interface 701, the processor 702, and the memory 703 communicate with each other through the bus 704. The processor 702 can execute the drainage control method described above by reading and executing machine-executable instructions corresponding to the control logic of the drainage control method in the memory 703. The specific content of the method is described in the above embodiment and will not be repeated here.

[0126] The memory 703 mentioned in this invention can be any electronic, magnetic, optical, or other physical storage device, and can contain stored information such as executable instructions, data, etc. Specifically, the memory 703 can be RAM (Random Access Memory), flash memory, storage drive (such as hard disk drive), any type of storage disk (such as optical disc, DVD, etc.), or similar storage media, or combinations thereof. Communication between this system network element and at least one other network element is achieved through at least one communication interface 701 (which can be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc., can be used.

[0127] Bus 704 can be an ISA bus, PCI bus, or EISA bus, etc. The bus can be divided into address bus, data bus, control bus, etc. Memory 703 is used to store programs, and processor 702 executes the programs after receiving execution instructions.

[0128] The processor 702 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method can be completed by the integrated logic circuitry in the hardware of the processor 702 or by instructions in software form. The processor 702 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly manifested as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.

[0129] The drainage control device and the drainage control method provided in this application are based on the same inventive concept and have the same beneficial effects as the methods they employ, operate, or implement.

[0130] This application also provides a computer-readable storage medium corresponding to the drainage control method provided in the foregoing embodiments. Please refer to... Figure 6 As shown, the computer-readable storage medium shown is an optical disc 30, on which a computer program (i.e., a program product) is stored. When the computer program is run by a processor, it executes the drainage control method provided in any of the foregoing embodiments.

[0131] It should be noted that examples of the computer-readable storage medium may also include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other optical and magnetic storage media, which will not be elaborated here.

[0132] The computer-readable storage medium provided in the above embodiments of this application and the drainage control method provided in the embodiments of this application are based on the same inventive concept and have the same beneficial effects as the methods adopted, run or implemented by the application stored therein.

[0133] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0134] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A drainage control method, characterized in that, The method includes: The drainage problem in the laundry processing equipment is detected by measuring the water level change in the washing tub. If drainage obstruction is detected, control the opening and closing of the drain pump and / or drain valve to regulate the air pressure in the connecting pipe between the drain pump and the drain valve. The system detects drainage problems in the laundry processing equipment by analyzing water level changes in the washing tub, including: If the cumulative number of times the drainage is obstructed is less than or equal to a preset threshold number, and the water level change value is less than a first threshold, then drainage is obstructed; if the cumulative number of times the drainage is obstructed is greater than a preset threshold number, and the water level change value is less than a second threshold, then drainage is obstructed; wherein, the first threshold is greater than the second threshold.

2. The method as described in claim 1, characterized in that, The control of the opening and closing of the drain pump and / or drain valve includes: Control the opening and closing of the drainage pump and / or drainage valve based on the cumulative number of times the drainage is obstructed.

3. The method as described in claim 2, characterized in that, Controlling the opening and closing of the drain pump and / or drain valve based on the cumulative number of times the drainage is obstructed includes: Based on the cumulative number of times falling within the first number range, the number of intermittent first cycles of the drainage pump is controlled.

4. The method as described in claim 2, characterized in that, Controlling the opening and closing of the drain pump and / or drain valve based on the cumulative number of times the drainage is obstructed includes: Based on the cumulative number of times falling within the second interval, first shut down the drain pump, then shut down the drain valve. After a delay, first open the drain valve, then open the drain pump, and control the drain pump to run intermittently for the second cycle.

5. The method as described in claim 2, characterized in that, Controlling the opening and closing of the drain pump and / or drain valve based on the cumulative number of times the drainage is obstructed includes: If the cumulative number of times falls within the third interval, first turn off the drain pump, control the washing tub to rotate for a preset time, and then turn the drain pump back on.

6. The method as described in claim 2, characterized in that, Controlling the opening and closing of the drain pump and / or drain valve based on the cumulative number of times the drainage is obstructed includes: Based on the cumulative number of times being within the fourth number range, after controlling the drainage pump to run intermittently for the third cycle, first shut down the drainage pump and then close the drainage valve. After a delay, open the drainage valve and control the drainage pump to run intermittently for the fourth cycle.

7. The method according to any one of claims 1-6, characterized in that, The method further includes: If the cumulative number of times reaches the preset upper limit, an alarm for abnormal drainage will be output.

8. The method as described in claim 1, characterized in that, The method further includes: Once the drainage start signal is detected, first open the drain valve, then start the drain pump.

9. The method as described in claim 1, characterized in that, The method further includes: Once a drainage completion signal is detected, first shut down the drainage pump, then close the drainage valve.

10. The method according to any one of claims 1 to 6 or 8-9, characterized in that, The method further includes: During the drainage process, the cumulative drainage time is recorded; If the cumulative drainage time exceeds the drainage limit and no drainage end signal is detected, a drainage abnormality alarm will be output.

11. A drainage control device, the device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method as described in any one of claims 1-10.

12. A garment processing device, characterized in that, include: The drainage control device as described in claim 11 above; A drain valve is located at the bottom of the garment processing equipment; A drain pump is located at the bottom of the clothing processing equipment, and the drain valve is connected to the pump's suction end via a connecting pipe, while the pump's outlet end is connected to a drain pipe.

13. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by a processor, it implements the steps of the method as described in any one of claims 1-10.

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