Control method of washing apparatus, storage medium, control device, and washing apparatus

Abstract

This invention relates to the field of household appliance control technology, and more particularly to a control method, control device, storage medium, and washing equipment. The washing equipment includes a washing chamber, a filter, and a washing pump. The washing pump controls the circulation of washing water within the washing chamber, and the filter filters the washing water within the washing chamber. The control method includes: acquiring the current information of the washing pump; inputting the current information into a pressure assessment model to determine the pressure value of the filter; backwashing the filter based on the pressure value; acquiring the backwashing efficiency of the filter; and updating the model parameters in the pressure assessment model based on the backwashing efficiency.

Description

Technical Field

[0001] This invention relates to the field of household appliance control technology, and in particular to a control method for a washing machine, a computer-readable storage medium, a control device for a washing machine, and a washing machine. Background Technology

[0002] With the continuous improvement of living standards, dishwashers have become an essential home appliance for many families. Dishwashers are equipped with filters to remove food residue, and the proper functioning of these filters directly affects the washing performance of the dishwasher.

[0003] In related technologies, pressure sensors are generally used to determine whether the filter is clogged. This method increases the complexity and cost of the dishwasher, and the results are not accurate because the sensors cannot be used in certain environments. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the first objective of this invention is to provide a control method for a washing device that can accurately determine the clogging status of the filter and dynamically adjust the backwashing strategy based on the clogging status, thereby simplifying the system structure, reducing costs and failure rates, and effectively improving washing efficiency.

[0005] A second objective of this invention is to provide a computer-readable storage medium.

[0006] The third objective of this invention is to provide a control device for a washing machine.

[0007] The fourth objective of this invention is to provide a washing device.

[0008] According to an embodiment of the present invention, a control method for a washing device includes a washing chamber, a filter screen, and a washing pump. The washing pump is used to control the circulation of washing water in the washing chamber, and the filter screen is used to filter the washing water in the washing chamber. The control method includes: acquiring current information of the washing pump; inputting the current information into a pressure evaluation model to determine the pressure value of the filter screen; performing backwashing treatment on the filter screen according to the pressure value; acquiring the backwashing efficiency of the filter screen; and updating the model parameters in the pressure evaluation model according to the backwashing efficiency.

[0009] According to the control method of the washing equipment according to an embodiment of the present invention, the current information includes a reference current and a current, wherein the reference current is the operating current of the washing pump when the filter is in a clean state.

[0010] According to the control method of the washing equipment of the present invention, the pressure value of the filter screen is determined by the following model: Where P represents the pressure value, I represents the current, I0 represents the reference current, and α, β, and γ all represent the model parameters of the pressure assessment model.

[0011] According to the control method of the washing equipment of the present invention, updating the model parameters in the pressure assessment model according to the backwashing efficiency includes: when the backwashing efficiency is less than the backwashing preset efficiency, updating at least one model parameter in the pressure assessment model according to a preset function.

[0012] The control method of the washing equipment according to an embodiment of the present invention further includes: when the current current of the washing pump is greater than a preset current, performing a backwashing treatment on the filter screen with a preset intensity for a first preset duration; after the backwashing treatment is completed, re-acquiring the current current of the washing pump; when the re-acquiring current is still greater than the preset current, performing a backwashing treatment on the filter screen with a preset intensity for a second preset duration, until the current current of the washing pump is less than or equal to the preset current.

[0013] According to the control method of the washing equipment according to the embodiment of the present invention, the preset current is determined based on the reference current, and the preset current is greater than the reference current.

[0014] According to the control method of the washing equipment of the present invention, the filter screen is backwashed according to the pressure value, including: determining the degree of clogging of the filter screen according to the pressure value; when the degree of clogging is greater than a preset degree of clogging, determining the backwashing time and backwashing intensity according to the degree of clogging; and backwashing the filter screen according to the backwashing intensity and the continuous backwashing time.

[0015] According to the control method of the washing equipment of the present invention, without the need to set up additional sensors, the filter pressure is indirectly detected by the change of the washing pump current. At the same time, the conversion relationship between the washing pump current and the filter pressure can be dynamically adjusted according to the washing efficiency to accurately determine the filter clogging status. Furthermore, the backwashing strategy can be dynamically adjusted according to the filter clogging status. While simplifying the system structure, reducing costs and failure rate, the washing efficiency is effectively improved.

[0016] According to an embodiment of the present invention, a computer-readable storage medium stores a control program for a washing device, which, when executed by a processor, can implement the control method for the washing device described above.

[0017] According to an embodiment of the present invention, a control device for a washing apparatus includes a washing chamber, a filter screen, and a washing pump. The washing pump controls the circulation of washing water within the washing chamber, and the filter screen filters the washing water within the washing chamber. The control device includes: an acquisition module for acquiring current information of the washing pump; a determination module for inputting the current information into a pressure evaluation model to determine the pressure value of the filter screen; a control module for backwashing the filter screen based on the pressure value; the acquisition module is further used to acquire the backwashing efficiency of the filter screen; and an update module for updating the model parameters in the pressure evaluation model based on the backwashing efficiency.

[0018] According to an embodiment of the present invention, the washing equipment includes a control device for controlling the washing equipment to perform cleaning.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] Figure 1 A flowchart of a control method for a washing device provided in an embodiment of the present invention;

[0021] Figure 2 This is a flowchart of the model update process in the control method for a washing device provided in an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the control device for a washing device provided in an embodiment of the present invention.

[0023] Reference numerals: 310 - Acquisition module; 320 - Determination module; 330 - Control module; 340 - Update module. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] The control method of the washing equipment according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0026] The washing device provided in this embodiment of the invention includes a washing chamber, a filter screen, and a washing pump. The washing pump is used to control the circulation of washing water in the washing chamber, and the filter screen is used to filter the washing water in the washing chamber.

[0027] refer to Figure 1 This is a flowchart of the control method for a washing device provided in an embodiment of the present invention.

[0028] Step S101: Obtain the current information of the washing pump.

[0029] As an optional embodiment, the current information includes a reference current and a current, wherein the reference current is the operating current of the washing pump when the filter is in a clean state.

[0030] Specifically, a high-precision current sensor is installed on the washing pump. It works on the principle of current sampling and can convert the current to be measured into a measurable voltage or current signal through a specific circuit structure. The components inside the sensor will capture the current changes in the washing pump circuit in real time and convert them into corresponding digital signals for processing.

[0031] In this embodiment of the invention, the sampling range of the current sensor is preferably 0-3A, and the sampling accuracy is ±0.1A. When cleaning the filter, the current sensor preferably samples at a frequency of 20ms, that is, it measures the working current 50 times per second to ensure that the current sensor can accurately capture the current changes of the washing pump during operation and respond to the changes in the working current in a timely manner. At the same time, the sampling data is smoothed by a digital filtering algorithm, thereby effectively eliminating noise interference and improving the accuracy and stability of the measurement results.

[0032] It should be noted that the washing pump provided in this embodiment of the invention is preferably a high-efficiency variable frequency washing pump with a rated power of 100W and a maximum flow rate of 20L / min. It can clean tableware efficiently and energy-savingly. At the same time, the washing pump is made of corrosion-resistant materials, which has high reliability and long service life.

[0033] Step S102: Input the current information into the pressure assessment model to determine the pressure value of the filter.

[0034] As an optional embodiment, the pressure value of the filter is determined using the following model: Where P represents the pressure value, I represents the current, I0 represents the reference current, and α, β, and γ all represent the model parameters of the pressure assessment model.

[0035] Specifically, the operating current is input into a preset model, which calculates the operating current data and outputs an estimated pressure value for the filter. According to the preset model, the filter pressure value increases with the increase of the operating current: when the operating current is low, the filter pressure value is low; when the operating current is high, the filter pressure value is high.

[0036] As an optional embodiment, the preset current is determined based on the reference current, and the preset current is greater than the reference current.

[0037] Specifically, the preset current I thIt can be determined based on a reference current. The formula for calculating the preset current and the reference current is: I th = k*I0, where I th I0 is the preset current, k is the trigger threshold, which can be changed according to actual needs, and I0 is the reference current.

[0038] Step S103: Backwash the filter screen according to the pressure value.

[0039] As an optional embodiment, backwashing the filter screen according to the pressure value includes: determining the degree of clogging of the filter screen according to the pressure value; when the degree of clogging is greater than a preset degree of clogging, determining the backwashing time and backwashing intensity according to the degree of clogging; and backwashing the filter screen according to the backwashing intensity and the continuous backwashing time.

[0040] As an optional embodiment, the control method of the washing equipment further includes: when the current current of the washing pump is greater than the preset current, performing a backwashing treatment on the filter screen with a preset intensity for a first preset duration; after the backwashing treatment is completed, re-acquiring the current current of the washing pump; when the re-acquiring current is still greater than the preset current, performing a backwashing treatment on the filter screen with a preset intensity for a second preset duration, until the current current of the washing pump is less than or equal to the preset current.

[0041] Specifically, when the current operating current of the washing pump is greater than the preset current, the filter screen is backwashed at a preset intensity for a preset duration. The first preset duration is a fixed value, which can be 30 seconds. The preset intensity can be a preset speed of the washing pump. Further, when the backwashing time reaches the first preset duration, it is determined that the backwashing is over. The current operating current of the washing pump is then re-acquired. If the second operating current is still greater than the preset current, after an interval of the second preset duration, the filter screen is backwashed at a preset intensity for a further preset duration. The second preset duration is the standby time.

[0042] It should be noted that the standby time may refer to the time after backwashing is completed, during which the system may continue to perform some auxiliary tasks, such as drying, to prevent mold growth and scale formation.

[0043] Specifically, the method for determining the current degree of filter clogging based on the pressure value can be as follows: when the pressure value is greater than the preset pressure value, that is, the degree of clogging is greater than the preset degree of clogging, the washing equipment is controlled to open the backwash valve to backwash the filter; when the pressure value is not greater than the preset pressure value, that is, the degree of clogging is not greater than the preset degree of clogging, the operating current of the washing pump is measured and the pressure value corresponding to the operating current is calculated.

[0044] It should be noted that the relationship between the degree of blockage and the pressure value can be as follows: Where C represents the degree of blockage, P represents the pressure value, and P0 represents the reference pressure value corresponding to the working current being the reference current I0. max This is the maximum pressure value that the filter screen can withstand.

[0045] When the congestion level is greater than the preset congestion level C th When this is the case, the backwashing time T is set as: T = T min +(T max -T min )*C(P), where T min T is the preset minimum backwash time. max The preset maximum backwash time; the backwash intensity is set to: S = S min +(S max -S min )*C(P), where S is the backwash intensity (speed of the washing pump), S min S is the minimum speed of the washing pump. max This is the maximum speed of the washing pump.

[0046] During the cleaning process of the filter screen, the pressure on the filter screen will change with the rinsing, that is, the degree of clogging will change with the rinsing, and therefore the rate of pressure change will also change. The backwashing time and intensity can be controlled by different rates of pressure change, and the filter screen can be backwashed according to the backwashing intensity and the corresponding backwashing time. In particular, the opening time of the corresponding backwashing valve can be controlled to adjust the backwashing time, and the opening degree of the corresponding backwashing valve and the speed of the washing pump can be controlled to adjust the backwashing intensity of the washing equipment.

[0047] Step S104: Obtain the backwashing efficiency of the filter screen.

[0048] Specifically, after the washing equipment completes one round of backwashing, the efficiency of this backwashing operation is calculated. The formula for calculating the backwashing efficiency is as follows: Where E is the backwashing efficiency, P before P is the estimated pressure value before backflushing begins. after This is the estimated pressure of the filter screen after backwashing.

[0049] Step S105: Update the model parameters in the pressure assessment model based on the backwashing efficiency.

[0050] The washing equipment has a preset efficiency, which can be denoted as E. th The preset efficiency serves as a standard for the cleaning efficiency of the washing equipment's filter. After the washing equipment completes one round of backwashing, the backwashing efficiency E is compared with the preset efficiency E. thThe comparisons were made, and the model parameters of the stress assessment model were updated based on the comparison results.

[0051] As an optional embodiment, updating the model parameters in the pressure assessment model according to the backwashing efficiency includes: when the backwashing efficiency is less than the backwashing preset efficiency, updating at least one model parameter in the pressure assessment model according to a preset function.

[0052] Specifically, let's assume the preset efficiency is E. th , when E <E th At the same time, at least one model parameter in the stress assessment model should be updated, including updating the value of model parameter β in the stress assessment model to improve the sensitivity of the stress assessment model; and updating the values ​​of model parameters α and γ in the stress assessment model to improve the accuracy of the stress assessment model.

[0053] The update formulas for α, β, and γ are as follows: Where, α new β new and γ new These are the model parameters for the updated stress assessment model.

[0054] refer to Figure 2 This is a flowchart of the model update process in the control method of the washing equipment provided in the embodiment of the present invention.

[0055] When the filter is in a clean state, the reference current of the washing pump is acquired, and the reference pressure value of the filter in the clean state is determined based on the reference current. A preset pressure value is then set based on the reference pressure value. When the washing equipment is running, the current sensor acquires the operating current of the washing pump in real time. Furthermore, the operating current is analyzed and calculated to obtain the pressure value of the filter. When the pressure value of the filter is greater than the preset pressure value, the filter is backwashed according to the backwashing time and backwashing intensity. When the estimated pressure value of the filter is not greater than the preset pressure value, the operating current of the washing pump continues to be monitored. After rinsing is completed, the backwashing effect of the filter is evaluated, and the model parameters of the pressure evaluation model are updated based on the evaluation results. After waiting for a second preset time, the relationship between the pressure value of the filter and the preset pressure value is further determined.

[0056] According to the control method of the washing equipment of the present invention, without the need to set up additional sensors, the filter pressure is indirectly detected by the change of the washing pump current. At the same time, the conversion relationship between the washing pump current and the filter pressure can be dynamically adjusted according to the washing efficiency to accurately determine the filter clogging status. Furthermore, the backwashing strategy can be dynamically adjusted according to the filter clogging status. While simplifying the system structure, reducing costs and failure rate, the washing efficiency is effectively improved.

[0057] Based on the same inventive concept, corresponding to the control method of the washing equipment in any of the above embodiments, this application also provides a computer-readable storage medium storing computer instructions for causing a computer to execute the control method of the washing equipment in any of the above embodiments.

[0058] The aforementioned non-transitory computer-readable storage media can be any available medium or data storage device that a computer can access, including but not limited to magnetic storage (e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MOs), etc.), optical storage (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND flash), solid-state drives (SSDs)).

[0059] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Furthermore, computer-readable media can even be paper or other suitable media on which programs can be printed, because programs can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpreting, or otherwise processing as necessary, and then stored in computer memory.

[0060] The computer instructions stored in the computer-readable storage medium of the above embodiments are used to cause a computer to perform a control method of a washing device as described in any of the above exemplary method sections, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0061] refer to Figure 3 This is a schematic diagram of the control device for a washing device provided in an embodiment of the present invention.

[0062] Based on the same inventive concept, corresponding to any of the above embodiments, the present invention also provides a control device for a washing equipment. The washing equipment includes a washing chamber, a filter screen, and a washing pump. The washing pump is used to control the circulation of washing water in the washing chamber, and the filter screen is used to filter the washing water in the washing chamber.

[0063] The control device includes: an acquisition module 310, a determination module 320, a control module 330, and an update module 340.

[0064] The acquisition module 310 is used to acquire the current information of the washing pump; the determination module 320 is used to input the current information into the pressure evaluation model to determine the pressure value of the filter screen; the control module 330 is used to perform backwashing treatment on the filter screen according to the pressure value; the acquisition module 310 is also used to acquire the backwashing efficiency of the filter screen; and the update module 340 is used to update the model parameters in the pressure evaluation model according to the backwashing efficiency.

[0065] In some embodiments of the present invention, the current information includes a reference current and a current, wherein the reference current is the operating current of the washing pump when the filter is in a clean state.

[0066] In some embodiments of the present invention, the determining module 320 determines the pressure value of the filter using the following model: Where P represents the pressure value, I represents the current, I0 represents the reference current, and α, β, and γ all represent the model parameters of the pressure assessment model.

[0067] In some embodiments of the present invention, the update module 340 is specifically used to: update at least one model parameter in the pressure assessment model according to a preset function when the backwashing efficiency is less than the backwashing preset efficiency.

[0068] In some embodiments of the present invention, the control module 330 is further configured to: perform a backwashing process of preset intensity on the filter screen for a first preset duration when the current current of the washing pump is greater than the preset current; the acquisition module 310 is further configured to: reacquire the current current of the washing pump after the backwashing process is completed; the control module 330 is further configured to: perform a backwashing process of preset intensity on the filter screen for a second preset duration after a second preset duration when the reacquired current current is still greater than the preset current, until the current current of the washing pump is less than or equal to the preset current.

[0069] In some embodiments of the present invention, the preset current is determined based on the reference current, and the preset current is greater than the reference current.

[0070] In some embodiments of the present invention, the control module 330 is specifically used to: determine the degree of clogging of the filter screen based on the pressure value; when the degree of clogging is greater than a preset degree of clogging, determine the backwashing time and backwashing intensity based on the degree of clogging; and perform backwashing treatment on the filter screen based on the backwashing intensity and the continuous backwashing time.

[0071] It should be noted that the specific implementation of the control device of the washing equipment in the embodiments of the present invention can be referred to the specific implementation of the control method of the washing equipment in the above embodiments. To avoid redundancy, it will not be described again here.

[0072] In summary, the control device of the washing equipment in this embodiment of the invention can accurately determine the clogging status of the filter screen and further dynamically adjust the backwashing strategy according to the clogging status of the filter screen. While simplifying the system structure, reducing costs and failure rates, it effectively improves washing efficiency.

[0073] Based on the same inventive concept, corresponding to the methods of any of the above embodiments, this application also proposes a washing device, which includes the control device of the washing device in the above embodiments. The control device of the washing device is used to control the washing device and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0074] Furthermore, other components and functions of the washing equipment in the embodiments of the present invention are known to those skilled in the art, and will not be described in detail here to reduce redundancy.

[0075] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0076] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0077] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0078] Furthermore, the terms "first," "second," etc., used in the embodiments of this invention are for descriptive purposes only and should not be construed as indicating or implying relative importance, or implicitly specifying the number of technical features indicated in this embodiment. Therefore, features defined with terms such as "first" and "second" in the embodiments of this invention can explicitly or implicitly indicate that the embodiment includes at least one of those features. In the description of this invention, the word "multiple" means at least two or more, such as two, three, four, etc., unless otherwise explicitly specified in the embodiments.

[0079] In this invention, unless otherwise explicitly specified or limited in the embodiments, the terms "installation," "connection," "joining," and "fixing" appearing in the embodiments should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can also be a mechanical connection, an electrical connection, etc. Of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components, or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific implementation.

[0080] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0081] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A control method for a washing machine, characterized in that, The washing equipment includes a washing chamber, a filter screen, and a washing pump. The washing pump is used to control the circulation of washing water in the washing chamber, and the filter screen is used to filter the washing water in the washing chamber. The control method includes: Obtain the current information of the washing pump; The current information is input into a pressure assessment model to determine the pressure value of the filter. The filter screen is backwashed according to the pressure value; Obtain the backwashing efficiency of the filter screen; The model parameters in the pressure assessment model are updated based on the backwashing efficiency.

2. The control method for the washing equipment according to claim 1, characterized in that, The current information includes a reference current and a current, wherein the reference current is the operating current of the washing pump when the filter is in a clean state.

3. The control method for the washing equipment according to claim 2, characterized in that, The pressure value of the filter screen is determined using the following model: Wherein, P represents the pressure value, I represents the current, I0 represents the reference current, and α, β, and γ all represent the model parameters of the pressure assessment model.

4. The control method for the washing equipment according to claim 3, characterized in that, The model parameters in the pressure assessment model are updated based on the backwashing efficiency, including: When the backwashing efficiency is less than the preset backwashing efficiency, at least one model parameter in the pressure assessment model is updated according to the preset function.

5. The control method for the washing equipment according to claim 2, characterized in that, The method further includes: When the current of the washing pump is greater than the preset current, the filter screen is backwashed for a preset intensity for a first preset duration. After the backwashing process is completed, the current of the washing pump is reacquired. If the current current that is reacquired is still greater than the preset current, the filter screen is backwashed at a preset intensity for a second preset time interval and then for a first preset time interval until the current current of the washing pump is less than or equal to the preset current.

6. The control method for the washing equipment according to claim 5, characterized in that, The preset current is determined based on the reference current, and the preset current is greater than the reference current.

7. The control method for the washing equipment according to claim 1, characterized in that, The filter screen is backwashed according to the pressure value, including: The degree of clogging of the filter is determined based on the pressure value; When the degree of blockage is greater than a preset degree of blockage, the backwashing time and backwashing intensity are determined based on the degree of blockage. The filter screen is backwashed according to the backwashing intensity and for the specified backwashing time.

8. A computer-readable storage medium, characterized in that, It stores a control program for a washing device, which, when executed by a processor, implements the control method for the washing device according to any one of claims 1-7.

9. A control device for a washing machine, characterized in that, The washing equipment includes a washing chamber, a filter screen, and a washing pump. The washing pump controls the circulation of washing water within the washing chamber, and the filter screen filters the washing water within the washing chamber. The control device includes: The acquisition module is used to acquire the current information of the washing pump; The determination module is used to input the current information into the pressure assessment model to determine the pressure value of the filter screen; The control module is used to backwash the filter screen according to the pressure value; The acquisition module is also used to acquire the backwashing efficiency of the filter screen; An update module is used to update the model parameters in the pressure assessment model based on the backwashing efficiency.

10. A washing device, characterized in that, Includes the control device of the washing equipment as described in claim 9.

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