Control methods, devices, and water purification equipment

Abstract

This application relates to a control method, apparatus, water purification equipment, computer-readable storage medium, and computer program product for a water purification device. The method includes: acquiring an initial flushing flow rate and a target flushing flow rate of the reverse osmosis membrane filter element in the water purification device; determining a flushing start value for the pre-filter element in the water purification device based on the initial flushing flow rate; and activating the flushing function of the pre-filter element when the target flushing flow rate is less than or equal to the flushing start value. This method can improve the accuracy of filter element flushing determination.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and in particular to a control method, apparatus, water purification equipment, computer-readable storage medium, and computer program product for a water purification device. Background Technology

[0002] Existing water purification equipment has a filter cartridge cleaning function, and the existing filter cartridge cleaning methods include manual disassembly and cleaning and automatic flushing. When the filter cartridge is automatically flushed, the water purification equipment determines whether to start the flushing process by detecting the reduced flow rate value.

[0003] However, when at least two filter cartridges are installed in a water purification system, whether the filter cartridge to be flushed activates its flushing function is greatly affected by the clogging of other filter cartridges and the pipeline, leading to inaccurate judgment of the flushing of the filter cartridge to be flushed. Summary of the Invention

[0004] Therefore, it is necessary to provide a control method, device, water purification equipment, computer-readable storage medium, and computer program product for water purification equipment that can accurately determine the rinsing of filter elements, in order to address the above-mentioned technical problems.

[0005] Firstly, this application provides a control method for a water purification device. The method includes:

[0006] Obtain the initial flushing flow rate and target flushing flow rate of the reverse osmosis membrane filter element in the water purification equipment;

[0007] Based on the initial flushing flow rate value, determine the flushing start value of the pre-filter cartridge in the water purification equipment;

[0008] When the target flushing flow rate is less than or equal to the flushing start value, the flushing function of the pre-filter is activated.

[0009] In one embodiment, determining the flushing start value of the pre-filter cartridge in the water purification device based on the initial flushing flow rate value includes:

[0010] Obtain the material parameters of the reverse osmosis membrane filter element;

[0011] The flushing start value is determined based on the material parameters and the initial flushing flow rate.

[0012] In one embodiment, the material parameters of the reverse osmosis membrane filter element include the membrane area of ​​the reverse osmosis membrane filter element;

[0013] Determining the flushing start value based on the material parameters and the initial flushing flow rate includes:

[0014] Based on the mapping relationship between membrane area and flushing threshold, a target flushing threshold matching the membrane area is obtained;

[0015] The flushing start value is obtained based on the target flushing threshold and the initial flushing flow rate.

[0016] In one embodiment, the target flushing threshold includes a first flushing threshold and a second flushing threshold, wherein the first flushing threshold is greater than the second flushing threshold;

[0017] The step of obtaining the flushing start value based on the target flushing threshold and the initial flushing flow rate value includes:

[0018] When the initial flushing flow rate is greater than or equal to the second flushing threshold and less than the first flushing threshold, the flushing start value is determined based on the initial flushing flow rate.

[0019] In one embodiment, the target flushing threshold includes a first flushing threshold and a second flushing threshold, wherein the first flushing threshold is greater than the second flushing threshold; the method further includes at least one of the following:

[0020] The first type:

[0021] When the initial flushing flow rate is greater than or equal to the first flushing threshold, the preset flushing value is determined as the flushing start value;

[0022] The second type:

[0023] When the initial flushing flow rate is less than the second flushing threshold, the flushing start value is determined based on the initial flushing flow rate and the set value corresponding to the initial flushing flow rate.

[0024] In one embodiment, the target flushing flow rate value includes flushing flow rate values ​​detected in at least two consecutive flushing states; the step of activating the flushing function of the pre-filter when the target flushing flow rate value is less than or equal to the flushing activation value includes:

[0025] When the flushing flow rate value in at least two consecutive flushing states is less than or equal to the flushing start value, the flushing function of the pre-filter is activated.

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

[0027] When the target flushing flow rate is greater than the flushing start value, the water production flow rate and the purified water flow rate of the pre-filter are obtained.

[0028] The cumulative water flow of the pre-filter is obtained based on the target flushing flow rate, the water production flow rate, and the purified water flow rate.

[0029] When the cumulative water flow reaches the water flow threshold, the flushing function of the pre-filter is activated.

[0030] Secondly, this application also provides a control device for a water purification device. The device includes:

[0031] The acquisition module is used to acquire the initial flushing flow rate and the target flushing flow rate of the reverse osmosis membrane filter element in the water purification equipment;

[0032] The determining module is used to determine the flushing start value of the pre-filter in the water purification equipment based on the initial flushing flow rate value.

[0033] The start-up module is used to activate the flushing function of the pre-filter when the target flushing flow rate value is less than or equal to the flushing start-up value.

[0034] Thirdly, this application also provides a water purification device. The water purification device includes: a pre-filter, a reverse osmosis membrane filter, a flushing flow detection device disposed between the pre-filter and the reverse osmosis membrane filter, and a processor communicatively connected to the flushing flow detection device;

[0035] The flushing flow detection device is used to record the initial flushing flow rate and the target flushing flow rate of the reverse osmosis membrane filter element in the water purification equipment.

[0036] The processor is used to determine the flushing start value of the pre-filter in the water purification device based on the initial flushing flow value; when the target flushing flow value is less than or equal to the flushing start value, the flushing function of the pre-filter is activated.

[0037] In one embodiment, the water purification device further includes a water flow detection device;

[0038] The flushing flow detection device is also used to record the water flow rate of the pre-filter cartridge when the water purification device is in water production mode.

[0039] The water flow detection device is used to record the amount of purified water flowing through the pre-filter cartridge of the water purification device in the purified water state.

[0040] The processor is further configured to, when the target flushing flow rate is greater than the flushing start value, obtain the cumulative water flow of the pre-filter based on the target flushing flow rate, the water production flow rate, and the purified water flow rate; and to activate the flushing function of the pre-filter when the cumulative water flow reaches the water flow threshold.

[0041] Fourthly, this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, which, when executed by a processor, performs the following steps:

[0042] Obtain the initial flushing flow rate and target flushing flow rate of the reverse osmosis membrane filter element in the water purification equipment;

[0043] Based on the initial flushing flow rate value, determine the flushing start value of the pre-filter cartridge in the water purification equipment;

[0044] When the target flushing flow rate is less than or equal to the flushing start value, the flushing function of the pre-filter is activated.

[0045] Fifthly, this application also provides a computer program product. The computer program product includes a computer program that, when executed by a processor, performs the following steps:

[0046] Obtain the initial flushing flow rate and target flushing flow rate of the reverse osmosis membrane filter element in the water purification equipment;

[0047] Based on the initial flushing flow rate value, determine the flushing start value of the pre-filter cartridge in the water purification equipment;

[0048] When the target flushing flow rate is less than or equal to the flushing start value, the flushing function of the pre-filter is activated.

[0049] The aforementioned control method, apparatus, water purification equipment, computer-readable storage medium, and computer program product for water purification equipment, by acquiring the initial flushing flow rate and target flushing flow rate of the reverse osmosis membrane filter element in the water purification equipment, can determine the flushing start value of the pre-filter element based on the initial flushing flow rate. Furthermore, when the target flushing flow rate is less than or equal to the flushing start value, the flushing function of the pre-filter element is activated. Therefore, when at least two filter elements are installed in the water purification equipment, the activation of the pre-filter element's flushing function can be determined based on the relevant parameters of the post-filter element. This reduces the impact of post-filter element clogging and pipeline issues on the pre-filter element's flushing judgment, improving the accuracy of the pre-filter element flushing judgment. Attached Figure Description

[0050] Figure 1 This is a structural block diagram of a water purification device in one embodiment;

[0051] Figure 2 This is a structural block diagram of the water purification device in another embodiment;

[0052] Figure 3 This is a schematic diagram of a water purification device in another embodiment;

[0053] Figure 4This is a flowchart illustrating the control method of a water purification device in one embodiment;

[0054] Figure 5 This is a schematic diagram of a process for determining the flushing start value of the pre-filter cartridge in a water purification device based on the initial flushing flow rate in one embodiment.

[0055] Figure 6 This is a flowchart illustrating the process of determining the flushing start value of the pre-filter cartridge in a water purification device based on material parameters and initial flushing flow rate in one embodiment.

[0056] Figure 7 This is a flowchart illustrating the control method of a water purification device in one embodiment;

[0057] Figure 8 This is a flowchart illustrating the control method of a water purification device in another embodiment;

[0058] Figure 9 This is a structural block diagram of the control device of a water purification equipment in one embodiment. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0060] The control method for the water purification equipment provided in this application embodiment can be applied to, for example... Figure 1 The application environment shown is as follows. The water purification device 100 includes a pre-filter 102, a reverse osmosis membrane filter 104, a flushing flow detection device 106 disposed between the pre-filter 102 and the reverse osmosis membrane filter 104, and a processor 108 communicatively connected to the flushing flow detection device 106. Specifically, the flushing flow detection device 106 records the initial flushing flow value and the target flushing flow value of the reverse osmosis membrane filter 104. The processor 108 determines the flushing start value of the pre-filter 102 in the water purification device based on the initial flushing flow value; when the target flushing flow value is less than or equal to the flushing start value, the flushing function of the pre-filter 102 is activated.

[0061] Combination Figure 1 In some embodiments, such as Figure 2The diagram shows a structural block diagram of a water purification device. The water purification device 100 also includes a water flow detection device 202. Specifically, the flushing flow detection device is used to record the water flow rate of the pre-filter cartridge in the water purification state; the water flow detection device 202 is used to record the purified water flow rate of the pre-filter cartridge in the water purification state; the processor 108 is also used to obtain the cumulative water flow rate of the pre-filter cartridge based on the target flushing flow rate value, the water production flow rate, and the purified water flow rate when the target flushing flow rate value is greater than the flushing start value; when the cumulative water flow rate reaches the water flow rate threshold, the flushing function of the pre-filter cartridge 102 is activated. Therefore, it is possible to determine whether to forcibly activate the flushing function of the pre-filter cartridge 102 based on the cumulative water flow rate of the pre-filter cartridge 102.

[0062] The water purification device 100 can be implemented through various possible structures, as long as it can determine whether to activate the flushing function of the pre-filter 102 based on the pre-filter 102, the reverse osmosis membrane filter 104, and the flushing flow detection device 106 in the water purification device.

[0063] In one embodiment, such as Figure 3 The diagram shows a water purification device. The water purification device 100 includes a pre-filter 102, a reverse osmosis membrane filter 104, a flushing flow detection device 106, a water flow detection device 202, a raw water inlet 300, a composite filter 302, an inlet solenoid valve 304, a pressure stabilizing pump 306, a check valve 308, a high-pressure switch 310, a wastewater valve 312, and a wastewater outlet 314.

[0064] based on Figure 3 As shown in the diagram, the water purification equipment 100 can perform a pure water production process, a purified water production process, and a rinsing process. Specifically, in the pure water production process, tap water first comes out from the raw water inlet 300, then passes through the pre-filter 102 for filtration, and then enters the composite filter 302 for filtration. The filtered tap water then flows to the inlet solenoid valve 304, the pressure stabilizing pump 306, the reverse osmosis membrane filter 104, the check valve 308, and the composite filter 302, finally exiting as pure water via the high-pressure switch 310. In the pure water production process, tap water first comes out from the raw water inlet 300, passes through the pre-filter 102, and then passes through the water flow detection device 202 to exit as purified water. During the rinsing process, after the tap water comes out from the raw water inlet 300, it first passes through the pre-filter 102 for filtration, then enters the composite filter 302 for filtration, then goes to the inlet solenoid valve 304, to the pressure stabilizing pump 306, to the reverse osmosis membrane filter 104, to the wastewater valve 312, and finally to the wastewater outlet 314 to discharge wastewater.

[0065] In conjunction with the above, in one embodiment, such as Figure 4 As shown, a control method for a water purification device is provided, which is applied to... Figure 1Taking processor 108 as an example, the explanation includes the following steps:

[0066] S402, obtain the initial flushing flow rate and target flushing flow rate of the reverse osmosis membrane filter element in the water purification equipment.

[0067] In this embodiment, combined with Figure 1 The initial flushing flow rate and target flushing flow rate of the reverse osmosis membrane filter element can be obtained through the flushing flow rate detection device 106. The initial flushing flow rate of the reverse osmosis membrane filter element refers to the flushing flow rate detected when the water purification equipment first starts the flushing function. The target flushing flow rate of the reverse osmosis membrane filter element refers to the flushing flow rate detected after the water purification equipment has started the flushing function at least twice. The flushing flow rate detection device can be a flow meter or other type of device used to detect the flushing flow rate of the reverse osmosis membrane filter element during the flushing process. It can be understood that the water purification equipment has started the flushing function, meaning that the water purification equipment has performed the working process in the flushing state.

[0068] S404, determine the flushing start value of the pre-filter in the water purification equipment based on the initial flushing flow rate value.

[0069] In this embodiment, various possible methods can be used to determine the flushing start value of the pre-filter cartridge in the water purification device based on the initial flushing flow rate value. In some embodiments, the flushing start value of the pre-filter cartridge can be obtained from the mapping relationship between the initial flushing flow rate value and the flushing start value.

[0070] S406: When the target flushing flow rate is less than or equal to the flushing start value, the flushing function of the pre-filter is activated.

[0071] In this embodiment, combined with Figure 3 The processor controls the tap water to come out from the raw water inlet 300, so that the tap water passes through the pre-filter 102 for filtration, then enters the composite filter 302 for filtration, then to the inlet solenoid valve 304, to the pressure stabilizing pump 306, to the reverse osmosis membrane filter 104, to the wastewater valve 312, and finally to the wastewater outlet 314 to discharge wastewater, thereby realizing the flushing process of the pre-filter.

[0072] In summary, based on Figure 4The method described above obtains the initial flushing flow rate and target flushing flow rate of the reverse osmosis membrane filter element in the water purification equipment. Based on the initial flushing flow rate, the flushing start value of the pre-filter element in the water purification equipment can be determined. Then, when the target flushing flow rate is less than or equal to the flushing start value, the flushing function of the pre-filter element is activated. Therefore, when at least two filter elements are installed in the water purification equipment, the relevant parameters of the post-filter element can be used to determine whether to activate the flushing function of the pre-filter element. This reduces the impact of post-filter clogging and pipeline issues on the flushing judgment of the pre-filter element, improves the accuracy of the flushing judgment, and allows for more precise and intelligent activation of the flushing function, improving the flushing effect, reducing water waste, and extending the service life of the filter elements.

[0073] The processor can be implemented in various ways to determine the flushing start value of the pre-filter in the water purification equipment based on the initial flushing flow rate. As long as the determined flushing start value can accurately determine whether to start the flushing function of the pre-filter, it is sufficient.

[0074] In one embodiment, such as Figure 5 The diagram illustrates a process for determining the flushing start value of a pre-filter cartridge in a water purification system based on an initial flushing flow rate. This method is then applied to… Figure 1 Taking the processor 108 as an example, the steps include:

[0075] S502, obtain the material parameters of the reverse osmosis membrane filter element.

[0076] In this embodiment, the material parameters of the reverse osmosis membrane filter element are used to characterize its performance. For example, these parameters include the membrane area and flux of the reverse osmosis membrane. The filtration area of ​​the reverse osmosis membrane can be determined by its membrane area, which is typically measured in square meters. Different models and manufacturers of reverse osmosis membranes have different filtration areas; generally, the larger the filtration area, the stronger its processing capacity. The flux of the reverse osmosis membrane (i.e., membrane flux) refers to the permeate flow rate, that is, the amount of water filtered through the reverse osmosis membrane within a certain time period. Membrane flux is usually measured in hours, with units of L / (m²). 2 LMH (Liters per Hour per Square Meter) refers to the number of liters of liquid passing through a square meter per hour.

[0077] In some embodiments, the material parameters of the reverse osmosis membrane filter element in the water purification equipment can be stored in a preset database. When it is necessary to determine whether to activate the flushing function of the pre-filter element, the material parameters of the reverse osmosis membrane filter element can be obtained from the preset database.

[0078] S504, determine the flushing start value based on material parameters and initial flushing flow rate.

[0079] In this embodiment, the processor can be implemented in various ways to determine the flushing start value of the pre-filter in the water purification equipment based on the material parameters of the reverse osmosis membrane filter element and the initial flushing flow rate.

[0080] In some embodiments, when the material parameters of the reverse osmosis membrane filter element include the flux of the reverse osmosis membrane, a preset flux range in which the reverse osmosis membrane flux falls is determined. A corresponding flow threshold is then determined based on the preset flux range. Furthermore, the difference between the initial flushing flow rate and the flow threshold is determined as the flushing start value. Different preset flux ranges correspond to different flow thresholds, and the mapping relationship between the preset flux range and the flow threshold can be obtained through experimental testing.

[0081] In summary, based on Figure 5 The method shown can combine the material parameters of the reverse osmosis membrane filter cartridge and the initial flushing flow rate to adaptively determine the flushing start value. From a programming perspective, one flushing control method can be adapted to multiple specifications of water purification equipment (without one-to-one design). Thus, by combining the relevant parameters of the water purification equipment itself, different flushing start values ​​can be adaptively matched, improving the flexibility of program design.

[0082] In one embodiment, the material parameters of the reverse osmosis membrane filter element include the membrane area of ​​the reverse osmosis membrane filter element, such as... Figure 6 The diagram illustrates a process for determining the flushing start value of a pre-filter cartridge in a water purification system based on material parameters and an initial flushing flow rate. The process includes the following steps:

[0083] S602, based on the mapping relationship between membrane area and flushing threshold, obtain the target flushing threshold that matches the membrane area.

[0084] In this embodiment, different membrane areas correspond to different flushing thresholds in the mapping relationship between membrane area and flushing threshold. Specifically, by querying the mapping relationship for a membrane area that matches the membrane area of ​​the reverse osmosis membrane filter cartridge, the flushing threshold corresponding to that matching membrane area is determined as the target flushing threshold.

[0085] S604, obtain the flushing start value based on the target flushing threshold and the initial flushing flow rate.

[0086] In this embodiment, the flushing start value can be obtained based on the relationship between the target flushing threshold and the initial flushing flow rate. For example, when the target flushing threshold is greater than or equal to the initial flushing flow rate, the average of the target flushing threshold and the initial flushing flow rate is determined as the flushing start value. For example, when the target flushing threshold is less than the initial flushing flow rate, the difference between the initial flushing flow rate and a preset flow rate is determined as the flushing start value.

[0087] In summary, based on Figure 6 The method shown improves the efficiency of obtaining the flushing start value by pre-setting the mapping relationship between the membrane area and the flushing threshold, thereby improving the efficiency of judging whether the pre-filter cartridge has started the flushing function.

[0088] The processor can use various possible methods to obtain the flushing start value based on the target flushing threshold and the initial flushing flow rate. As long as the determined flushing start value can accurately determine whether to start the flushing function of the pre-filter, it is sufficient.

[0089] In one embodiment, the target flushing threshold includes a first flushing threshold and a second flushing threshold, wherein the first flushing threshold is greater than the second flushing threshold. Obtaining a flushing start value based on the target flushing threshold and the initial flushing flow rate value includes: determining the flushing start value based on the initial flushing flow rate value when the initial flushing flow rate value is greater than or equal to the second flushing threshold and less than the first flushing threshold.

[0090] Specifically, when the initial flushing flow rate is greater than or equal to the second flushing threshold and less than the first flushing threshold, a preset flushing flow rate is obtained, and the difference between the initial flushing flow rate and the preset flushing flow rate is determined as the flushing start value. In this embodiment, experimental testing showed that the water purification equipment operates stably when the preset flushing flow rate is 0.2 L / min. L / min is a unit of flow rate, which refers to the amount of fluid flowing through the effective cross-section of a closed pipe or open channel per unit time. In this embodiment, when the membrane area of ​​the reverse osmosis membrane filter element is 6 square meters, the first flushing threshold is 3.7 L / min, and the second flushing threshold is 3.4 L / min.

[0091] Furthermore, in one embodiment, when the initial flushing flow rate is greater than or equal to a first flushing threshold, a preset flushing value is determined as the flushing start value. In this embodiment, the first flushing threshold is 3.7 L / min, the second flushing threshold is 3.4 L / min, and the preset flushing value can be 3.6 L / min.

[0092] In one embodiment, when the initial flushing flow rate is less than the second flushing threshold, the difference between the initial flushing flow rate and the preset flushing flow rate is determined as the flushing start value.

[0093] In one embodiment, when the initial flushing flow rate is less than the second flushing threshold, a flushing start value is determined based on the initial flushing flow rate and the set value corresponding to the initial flushing flow rate. Specifically, the mapping relationship between the flushing flow rate and the set value is obtained, and the set value corresponding to the initial flushing flow rate is determined based on the mapping relationship; the difference between the initial flushing flow rate and the set value corresponding to the initial flushing flow rate is determined as the flushing start value.

[0094] In one embodiment, when the initial flushing flow rate is less than a second flushing threshold, a flushing start value is determined based on the difference between the initial flushing flow rate and the second flushing threshold. Specifically, a mapping relationship between the difference and a preset start value is obtained. Based on the mapping relationship, a difference that matches the difference between the initial flushing flow rate and the second flushing threshold is obtained, and the preset start value corresponding to this matching difference is determined as the flushing start value. This matching difference can be the same as the difference between the initial flushing flow rate and the second flushing threshold, or it can be any difference within a preset range.

[0095] To avoid erroneous judgments regarding the pre-filter flushing process based solely on the relationship between the flushing start value and the target flushing flow rate, in one embodiment, the target flushing flow rate includes flushing flow rates detected in at least two consecutive flushing states. Specifically, the pre-filter flushing function is activated when the target flushing flow rate is less than or equal to the flushing start value, including activating the pre-filter flushing function when the flushing flow rates in at least two consecutive flushing states are both less than or equal to the flushing start value. Thus, by comparing at least two flushing flow rates detected in consecutive flushing states with the flushing start value, the influence of external factors on the pre-filter flushing judgment process can be avoided, improving the accuracy of the pre-filter flushing judgment.

[0096] In one embodiment, such as Figure 7 The diagram shows a flow chart of a control method for a water purification device, which is applied to... Figure 1 Taking the processor 108 as an example, the steps include:

[0097] S702: When the target flushing flow rate is greater than the flushing start value, the water production flow rate and the purified water flow rate of the pre-filter are obtained.

[0098] In this embodiment, combined with Figure 3 The purified water flow rate of the pre-filter cartridge in the water purification state can be recorded by the water flow detection device 202. Specifically, the flow rate of tap water passing through the water flow detection device 202 in the water purification branch is the purified water flow rate. The water production flow rate of the pre-filter cartridge in the water production state can be recorded by the flushing flow detection device 106. Specifically, the flow rate of tap water passing through the flushing flow detection device 106 in the water production state is the water production flow rate.

[0099] S704 calculates the cumulative flow of the pre-filter based on the target flushing flow rate, water production flow rate, and purified water flow rate.

[0100] Specifically, the sum of the target flushing flow rate, the water production flow rate, and the purified water flow rate can be determined as the cumulative flow rate of the pre-filter cartridge.

[0101] S706: When the cumulative water flow reaches the water flow threshold, the pre-filter flushing function is activated.

[0102] In this embodiment, the water flow threshold can be 5000L or 8000L. The specific value of the water flow threshold can be set according to the actual application scenario, and this embodiment does not impose any specific limitations.

[0103] In conclusion, Figure 7 The method shown is to determine whether to activate the pre-filter flushing function by using the cumulative water flow of the pre-filter when the target flushing flow rate is less than or equal to the flushing start value and it is determined not to activate the pre-filter flushing function. This avoids the situation where the flushing start value is incorrectly determined based on the relationship between the flushing start value and the target flushing flow rate of the reverse osmosis membrane filter due to external factors, thus improving the accuracy of the pre-filter flushing determination.

[0104] In conjunction with the above, in one embodiment, such as Figure 8 As shown, a control method for a water purification device is provided, including the following steps:

[0105] S802, obtain the initial flushing flow rate and target flushing flow rate of the reverse osmosis membrane filter element in the water purification equipment.

[0106] S804, based on the mapping relationship between membrane area and flushing threshold, obtain a target flushing threshold that matches the membrane area; the target flushing threshold includes a first flushing threshold and a second flushing threshold, wherein the first flushing threshold is greater than the second flushing threshold.

[0107] Furthermore, based on the relationship between the initial flushing flow rate and the first and second flushing thresholds, the flushing start value can be determined via S8061, S8062, or S8063. Specifically:

[0108] S8061, when the initial flushing flow rate is greater than or equal to the first flushing threshold, the preset flushing value is determined as the flushing start value.

[0109] S8062, when the initial flushing flow rate is less than the second flushing threshold, the flushing start value is determined according to the initial flushing flow rate and the set value corresponding to the initial flushing flow rate.

[0110] S8063, when the initial flushing flow rate is greater than or equal to the second flushing threshold and less than the first flushing threshold, the flushing start value is determined based on the initial flushing flow rate.

[0111] After determining the flushing start value, based on the relationship between the target flushing flow rate and the flushing start value, it can be determined via S8081 or S8082 whether to activate the pre-filter flushing function. Specifically:

[0112] S8081: When the target flushing flow rate is less than or equal to the flushing start value, the flushing function of the pre-filter is activated.

[0113] S8082: When the target flushing flow rate is greater than the flushing start value, the water production flow rate and the purified water flow rate of the pre-filter are obtained; based on the target flushing flow rate, the water production flow rate, and the purified water flow rate, the cumulative flow rate of the pre-filter is obtained; when the cumulative flow rate reaches the flow rate threshold, the flushing function of the pre-filter is activated.

[0114] The specific content of S802-S8082 can be found in the aforementioned description and will not be repeated here.

[0115] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0116] Based on the same inventive concept, this application also provides a control device for a water purification device to implement the control method for the water purification device described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more embodiments of the control device for a water purification device provided below can be found in the limitations of the control method for the water purification device described above, and will not be repeated here.

[0117] In one embodiment, such as Figure 9 As shown, a control device for a water purification equipment is provided, comprising: an acquisition module 902, a determination module 904, and a start module 906, wherein:

[0118] The acquisition module 902 is used to acquire the initial flushing flow rate and the target flushing flow rate of the reverse osmosis membrane filter element in the water purification equipment.

[0119] The determination module 904 is used to determine the flushing start value of the pre-filter in the water purification equipment based on the initial flushing flow rate value.

[0120] The start-up module 906 is used to activate the flushing function of the pre-filter when the target flushing flow rate is less than or equal to the flushing start-up value.

[0121] In one embodiment, the determining module 904 is further configured to: obtain the material parameters of the reverse osmosis membrane filter element; and determine the flushing start value based on the material parameters and the initial flushing flow rate value.

[0122] In one embodiment, the material parameters of the reverse osmosis membrane filter element include the membrane area of ​​the reverse osmosis membrane filter element; the determining module 904 is further configured to: obtain a target flushing threshold matching the membrane area based on the mapping relationship between the membrane area and the flushing threshold; and obtain a flushing start value based on the target flushing threshold and the initial flushing flow rate value.

[0123] In one embodiment, the target flushing threshold includes a first flushing threshold and a second flushing threshold, wherein the first flushing threshold is greater than the second flushing threshold; the determining module 904 is further configured to determine a flushing start value based on the initial flushing flow rate when the initial flushing flow rate is greater than or equal to the second flushing threshold and less than the first flushing threshold.

[0124] In one embodiment, the target flushing threshold includes a first flushing threshold and a second flushing threshold, wherein the first flushing threshold is greater than the second flushing threshold; the determining module 904 is further configured to perform at least one of the following: firstly, when the initial flushing flow rate is greater than or equal to the first flushing threshold, a preset flushing value is determined as the flushing start value; secondly, when the initial flushing flow rate is less than the second flushing threshold, the flushing start value is determined according to the initial flushing flow rate and the set value corresponding to the initial flushing flow rate.

[0125] In one embodiment, the target flushing flow rate value includes the flushing flow rate value detected in at least two consecutive flushing states; the start module 906 is further configured to start the flushing function of the pre-filter when the flushing flow rate value in at least two consecutive flushing states is less than or equal to the flushing start value.

[0126] In one embodiment, the start module 906 is further configured to: obtain the water production flow rate and the purified water flow rate of the pre-filter when the target flushing flow rate is greater than the flushing start value; obtain the cumulative flow rate of the pre-filter based on the target flushing flow rate, the water production flow rate and the purified water flow rate; and start the flushing function of the pre-filter when the cumulative flow rate reaches the flow rate threshold.

[0127] Each module in the control device of the aforementioned water purification equipment can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of the water purification equipment in hardware form or independent of it, or stored in the memory of the water purification equipment in software form, so that the processor can call and execute the operations corresponding to each module.

[0128] In one embodiment, a water purification device is provided, comprising: a pre-filter, a reverse osmosis membrane filter, a flushing flow detection device disposed between the pre-filter and the reverse osmosis membrane filter, and a processor communicatively connected to the flushing flow detection device.

[0129] The flushing flow detection device is used to record the initial flushing flow rate and target flushing flow rate of the reverse osmosis membrane filter element in the water purification equipment; the processor is used to determine the flushing start value of the pre-filter element in the water purification equipment based on the initial flushing flow rate; when the target flushing flow rate is less than or equal to the flushing start value, the flushing function of the pre-filter element is activated.

[0130] In one embodiment, the water purification device further includes a water flow detection device; a flushing flow detection device, which is also used to record the water production flow of the pre-filter cartridge in the water production state of the water purification device; a water flow detection device, which is used to record the purified water flow of the pre-filter cartridge in the water purification state of the water purification device; and a processor, which is also used to obtain the cumulative water flow of the pre-filter cartridge based on the target flushing flow value, the water production flow, and the purified water flow when the target flushing flow value is greater than the flushing start value; and to start the flushing function of the pre-filter cartridge when the cumulative water flow reaches the water flow threshold.

[0131] In one embodiment, a water purification device is provided, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0132] Obtain the initial flushing flow rate and target flushing flow rate of the reverse osmosis membrane filter element in the water purification equipment; determine the flushing start value of the pre-filter element in the water purification equipment based on the initial flushing flow rate; activate the flushing function of the pre-filter element when the target flushing flow rate is less than or equal to the flushing start value.

[0133] In one embodiment, when the processor executes the computer program, it also performs the following steps: obtaining the material parameters of the reverse osmosis membrane filter element; and determining the flushing start value based on the material parameters and the initial flushing flow rate value.

[0134] In one embodiment, the material parameters of the reverse osmosis membrane filter element include the membrane area of ​​the reverse osmosis membrane filter element; when the processor executes the computer program, it also performs the following steps: obtaining a target flushing threshold that matches the membrane area based on the mapping relationship between the membrane area and the flushing threshold; and obtaining a flushing start value based on the target flushing threshold and the initial flushing flow rate value.

[0135] In one embodiment, the target flushing threshold includes a first flushing threshold and a second flushing threshold, wherein the first flushing threshold is greater than the second flushing threshold; when the processor executes the computer program, it further implements the following steps: when the initial flushing flow rate value is greater than or equal to the second flushing threshold and less than the first flushing threshold, a flushing start value is determined based on the initial flushing flow rate value.

[0136] In one embodiment, the target flushing threshold includes a first flushing threshold and a second flushing threshold, wherein the first flushing threshold is greater than the second flushing threshold; when the processor executes the computer program, it also implements at least one of the following: firstly, when the initial flushing flow rate is greater than or equal to the first flushing threshold, a preset flushing value is determined as the flushing start value; secondly, when the initial flushing flow rate is less than the second flushing threshold, the flushing start value is determined according to the initial flushing flow rate and the set value corresponding to the initial flushing flow rate.

[0137] In one embodiment, the target flushing flow rate value includes flushing flow rate values ​​detected in at least two consecutive flushing states; when the processor executes the computer program, it also implements the following steps: when the flushing flow rate values ​​in at least two consecutive flushing states are both less than or equal to the flushing start value, the flushing function of the pre-filter is activated.

[0138] In one embodiment, when the processor executes the computer program, it further implements the following steps: when the target flushing flow rate is greater than the flushing start value, it obtains the water production flow rate and the purified water flow rate of the pre-filter cartridge; based on the target flushing flow rate, the water production flow rate, and the purified water flow rate, it obtains the cumulative flow rate of the pre-filter cartridge; when the cumulative flow rate reaches the flow rate threshold, it starts the flushing function of the pre-filter cartridge.

[0139] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0140] Obtain the initial flushing flow rate and target flushing flow rate of the reverse osmosis membrane filter element in the water purification equipment; determine the flushing start value of the pre-filter element in the water purification equipment based on the initial flushing flow rate; activate the flushing function of the pre-filter element when the target flushing flow rate is less than or equal to the flushing start value.

[0141] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: obtaining the material parameters of the reverse osmosis membrane filter element; and determining the flushing start value based on the material parameters and the initial flushing flow rate value.

[0142] In one embodiment, the material parameters of the reverse osmosis membrane filter element include the membrane area of ​​the reverse osmosis membrane filter element; when the computer program is executed by the processor, it also performs the following steps: obtaining a target flushing threshold that matches the membrane area based on the mapping relationship between the membrane area and the flushing threshold; and obtaining a flushing start value based on the target flushing threshold and the initial flushing flow rate value.

[0143] In one embodiment, the target flushing threshold includes a first flushing threshold and a second flushing threshold, wherein the first flushing threshold is greater than the second flushing threshold; when the computer program is executed by the processor, it further implements the following steps: when the initial flushing flow rate value is greater than or equal to the second flushing threshold and less than the first flushing threshold, a flushing start value is determined based on the initial flushing flow rate value.

[0144] In one embodiment, the target flushing threshold includes a first flushing threshold and a second flushing threshold, wherein the first flushing threshold is greater than the second flushing threshold; when the computer program is executed by the processor, it further implements at least one of the following steps: First, when the initial flushing flow rate is greater than or equal to the first flushing threshold, a preset flushing value is determined as the flushing start value; Second, when the initial flushing flow rate is less than the second flushing threshold, the flushing start value is determined according to the initial flushing flow rate and the set value corresponding to the initial flushing flow rate.

[0145] In one embodiment, the target flushing flow rate value includes flushing flow rate values ​​detected in at least two consecutive flushing states; when the computer program is executed by the processor, it also implements the following steps: when the flushing flow rate values ​​in at least two consecutive flushing states are both less than or equal to the flushing start value, the flushing function of the pre-filter is activated.

[0146] In one embodiment, when the computer program is executed by the processor, it further implements the following steps: when the target flushing flow rate is greater than the flushing start value, the water production flow rate and the purified water flow rate of the pre-filter are obtained; based on the target flushing flow rate, the water production flow rate and the purified water flow rate, the cumulative flow rate of the pre-filter is obtained; when the cumulative flow rate reaches the flow rate threshold, the flushing function of the pre-filter is activated.

[0147] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0148] Obtain the initial flushing flow rate and target flushing flow rate of the reverse osmosis membrane filter element in the water purification equipment; determine the flushing start value of the pre-filter element in the water purification equipment based on the initial flushing flow rate; activate the flushing function of the pre-filter element when the target flushing flow rate is less than or equal to the flushing start value.

[0149] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: obtaining the material parameters of the reverse osmosis membrane filter element; and determining the flushing start value based on the material parameters and the initial flushing flow rate value.

[0150] In one embodiment, the material parameters of the reverse osmosis membrane filter element include the membrane area of ​​the reverse osmosis membrane filter element; when the computer program is executed by the processor, it also performs the following steps: obtaining a target flushing threshold that matches the membrane area based on the mapping relationship between the membrane area and the flushing threshold; and obtaining a flushing start value based on the target flushing threshold and the initial flushing flow rate value.

[0151] In one embodiment, the target flushing threshold includes a first flushing threshold and a second flushing threshold, wherein the first flushing threshold is greater than the second flushing threshold; when the computer program is executed by the processor, it further implements the following steps: when the initial flushing flow rate value is greater than or equal to the second flushing threshold and less than the first flushing threshold, a flushing start value is determined based on the initial flushing flow rate value.

[0152] In one embodiment, the target flushing threshold includes a first flushing threshold and a second flushing threshold, wherein the first flushing threshold is greater than the second flushing threshold; when the computer program is executed by the processor, it further implements at least one of the following steps: First, when the initial flushing flow rate is greater than or equal to the first flushing threshold, a preset flushing value is determined as the flushing start value; Second, when the initial flushing flow rate is less than the second flushing threshold, the flushing start value is determined according to the initial flushing flow rate and the set value corresponding to the initial flushing flow rate.

[0153] In one embodiment, the target flushing flow rate value includes flushing flow rate values ​​detected in at least two consecutive flushing states; when the computer program is executed by the processor, it also implements the following steps: when the flushing flow rate values ​​in at least two consecutive flushing states are both less than or equal to the flushing start value, the flushing function of the pre-filter is activated.

[0154] In one embodiment, when the computer program is executed by the processor, it further implements the following steps: when the target flushing flow rate is greater than the flushing start value, the water production flow rate and the purified water flow rate of the pre-filter are obtained; based on the target flushing flow rate, the water production flow rate and the purified water flow rate, the cumulative flow rate of the pre-filter is obtained; when the cumulative flow rate reaches the flow rate threshold, the flushing function of the pre-filter is activated.

[0155] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0156] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0157] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A control method for a water purification device, characterized in that, The method includes: The initial flushing flow rate and target flushing flow rate of the reverse osmosis membrane filter element in the water purification equipment are obtained; wherein, the initial flushing flow rate refers to the flushing flow rate of the reverse osmosis membrane filter element detected when the water purification equipment starts the flushing function for the first time; the target flushing flow rate refers to the flushing flow rate of the reverse osmosis membrane filter element detected after the water purification equipment starts the flushing function at least twice. Based on the initial flushing flow rate value, determine the flushing start value of the pre-filter cartridge in the water purification equipment; When the target flushing flow rate is less than or equal to the flushing start value, the flushing function of the pre-filter is activated. The step of determining the flushing start value of the pre-filter cartridge in the water purification equipment based on the initial flushing flow rate includes: obtaining the material parameters of the reverse osmosis membrane cartridge, wherein the material parameters of the reverse osmosis membrane cartridge include the membrane area of ​​the reverse osmosis membrane cartridge; obtaining a target flushing threshold matching the membrane area based on the mapping relationship between the membrane area and the flushing threshold; and obtaining the flushing start value of the pre-filter cartridge in the water purification equipment based on the target flushing threshold and the initial flushing flow rate. The step of obtaining the flushing start value of the pre-filter in the water purification device based on the target flushing threshold and the initial flushing flow rate includes: when the target flushing threshold is greater than or equal to the initial flushing flow rate, determining the average of the target flushing threshold and the initial flushing flow rate as the flushing start value; when the target flushing threshold is less than the initial flushing flow rate, determining the difference between the initial flushing flow rate and a preset flow rate as the flushing start value. The target flushing flow rate value includes flushing flow rate values ​​detected in at least two continuous flushing states. The step of activating the flushing function of the pre-filter when the target flushing flow rate value is less than or equal to the flushing activation value includes: activating the flushing function of the pre-filter when the flushing flow rate values ​​in the at least two continuous flushing states are all less than or equal to the flushing activation value.

2. The method according to claim 1, characterized in that, The target flushing threshold includes a first flushing threshold and a second flushing threshold, wherein the first flushing threshold is greater than the second flushing threshold; the method further includes: When the initial flushing flow rate is greater than or equal to the second flushing threshold and less than the first flushing threshold, the flushing start value is determined based on the initial flushing flow rate.

3. The method according to claim 2, characterized in that, When the initial flushing flow rate is greater than or equal to the second flushing threshold and less than the first flushing threshold, determining the flushing start value based on the initial flushing flow rate includes: When the initial flushing flow rate is greater than or equal to the second flushing threshold and less than the first flushing threshold, a preset flushing flow rate is obtained; The difference between the initial flushing flow rate and the preset flushing flow rate is determined as the flushing start value.

4. The method according to claim 1, characterized in that, The target flushing threshold includes a first flushing threshold and a second flushing threshold, wherein the first flushing threshold is greater than the second flushing threshold; the method further includes at least one of the following: The first type: When the initial flushing flow rate is greater than or equal to the first flushing threshold, the preset flushing value is determined as the flushing start value; The second type: When the initial flushing flow rate is less than the second flushing threshold, the flushing start value is determined based on the initial flushing flow rate and the set value corresponding to the initial flushing flow rate.

5. The method according to claim 4, characterized in that, The method further includes: Obtain the mapping relationship between the flushing flow rate value and the set value; The set value corresponding to the initial flushing flow rate is determined based on the mapping relationship; The step of determining the flushing start value based on the initial flushing flow rate value and the set value corresponding to the initial flushing flow rate value includes: The difference between the initial flushing flow rate value and the set value corresponding to the initial flushing flow rate value is determined as the flushing start value.

6. The method according to claim 4, characterized in that, The method further includes: When the initial flushing flow rate is less than the second flushing threshold, the mapping relationship between the difference and the preset start value is obtained; The preset start value corresponding to the difference between the initial flushing flow rate value and the second flushing threshold in the mapping relationship is determined as the flushing start value.

7. The method according to claim 1, characterized in that, The method further includes: When the target flushing flow rate is greater than the flushing start value, the water production flow rate and the purified water flow rate of the pre-filter are obtained. The sum of the target flushing flow rate, the water production flow rate, and the purified water flow rate is determined as the cumulative flow rate of the pre-filter cartridge. When the cumulative water flow reaches the water flow threshold, the flushing function of the pre-filter is activated.

8. A control device for a water purification equipment, characterized in that, The apparatus, used in any one of claims 1 to 7, comprises: The acquisition module is used to acquire the initial flushing flow rate and the target flushing flow rate of the reverse osmosis membrane filter element in the water purification equipment; wherein, the initial flushing flow rate refers to the flushing flow rate of the reverse osmosis membrane filter element detected when the water purification equipment starts the flushing function for the first time; the target flushing flow rate refers to the flushing flow rate of the reverse osmosis membrane filter element detected after the water purification equipment starts the flushing function at least twice. The determining module is used to determine the flushing start value of the pre-filter in the water purification equipment based on the initial flushing flow rate value; The start-up module is used to activate the flushing function of the pre-filter when the target flushing flow rate value is less than or equal to the flushing start-up value. The determining module is further configured to obtain the material parameters of the reverse osmosis membrane filter element, including the membrane area of ​​the reverse osmosis membrane filter element; obtain a target flushing threshold matching the membrane area based on the mapping relationship between the membrane area and the flushing threshold; and obtain the flushing start value of the pre-filter element in the water purification equipment based on the target flushing threshold and the initial flushing flow rate value. Specifically, the determining module is used to determine the average of the target flushing threshold and the initial flushing flow rate as the flushing start value when the target flushing threshold is greater than or equal to the initial flushing flow rate value; and to determine the difference between the initial flushing flow rate value and the preset flow rate value as the flushing start value when the target flushing threshold is less than the initial flushing flow rate value. The target flushing flow rate value includes flushing flow rate values ​​detected in at least two continuous flushing states. The start-up module is also used to start the flushing function of the pre-filter when the flushing flow rate values ​​in the at least two continuous flushing states are both less than or equal to the flushing start-up value.

9. A water purification device, characterized in that, The water purification device, applicable to any one of claims 1 to 7, comprises: a pre-filter, a reverse osmosis membrane filter, a flushing flow detection device disposed between the pre-filter and the reverse osmosis membrane filter, and a processor communicatively connected to the flushing flow detection device; The flushing flow detection device is used to record the initial flushing flow rate and the target flushing flow rate of the reverse osmosis membrane filter element in the water purification equipment; wherein, the initial flushing flow rate refers to the flushing flow rate of the reverse osmosis membrane filter element detected when the water purification equipment first starts the flushing function; the target flushing flow rate refers to the flushing flow rate of the reverse osmosis membrane filter element detected after the water purification equipment has started the flushing function at least twice. The processor is configured to determine the flushing start value of the pre-filter cartridge in the water purification device based on the initial flushing flow rate value; and to activate the flushing function of the pre-filter cartridge when the target flushing flow rate value is less than or equal to the flushing start value. The processor is further configured to acquire the material parameters of the reverse osmosis membrane filter element, including the membrane area of ​​the reverse osmosis membrane filter element; obtain a target flushing threshold matching the membrane area based on the mapping relationship between the membrane area and the flushing threshold; and obtain the flushing start value of the pre-filter element in the water purification device based on the target flushing threshold and the initial flushing flow rate value. The processor is specifically configured to, when the target flushing threshold is greater than or equal to the initial flushing flow rate, determine the average of the target flushing threshold and the initial flushing flow rate as the flushing start value; and when the target flushing threshold is less than the initial flushing flow rate, determine the difference between the initial flushing flow rate and a preset flow rate as the flushing start value. The target flushing flow rate value includes flushing flow rate values ​​detected in at least two consecutive flushing states; the processor is further configured to activate the flushing function of the pre-filter when the flushing flow rate values ​​in the at least two consecutive flushing states are both less than or equal to the flushing start value.

10. The water purification equipment according to claim 9, characterized in that, The water purification equipment also includes a water flow detection device; The flushing flow detection device is also used to record the water flow rate of the pre-filter cartridge when the water purification device is in water production mode. The water flow detection device is used to record the amount of purified water flowing through the pre-filter cartridge of the water purification device in the purified water state. The processor is further configured to determine the sum of the target flushing flow rate, the water production flow rate, and the purified water flow rate as the cumulative flow rate of the pre-filter when the target flushing flow rate is greater than the flushing start value. When the cumulative water flow reaches the water flow threshold, the flushing function of the pre-filter is activated.

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