Water purification equipment control method, device, computer equipment and water purification equipment

Abstract

The present application relates to a water purification equipment control method, device, computer equipment, storage medium, computer program product and water purification equipment. The method includes: obtaining the measured pure water flow rate of pure water produced by the water purification equipment during the water production process, and the reference standby time before reflux and the reference reflux time of the water purification equipment under the reference pure water flow rate; determining the reflux control coefficient according to the flow difference between the measured pure water flow rate and the reference pure water flow rate; determining the target standby time before reflux based on the reference standby time before reflux and the reflux control coefficient, and determining the initial reflux time based on the reference reflux time and the reflux control coefficient; correcting the initial reflux time according to the target standby time before reflux to obtain the target reflux time. The present method can be used to intelligently determine the operating parameters of the pure water reflux mode according to the measured pure water flow rate under actual working conditions, thereby effectively improving the operating effect of the pure water reflux mode.

Description

Technical Field

[0001] The present application relates to the technical field of water purification equipment control, and in particular to a water purification equipment control method, device, computer equipment, storage medium, computer program product, and water purification equipment. Background Art

[0002] With the advancement of water purification technology, reverse osmosis membranes designed based on reverse osmosis technology are often used as filter elements in water purification equipment. During the standby period after water production, water purification equipment equipped with reverse osmosis membrane elements remains immersed in water. Because the salt ion concentration on the pure water side of the reverse osmosis membrane element is lower than that on the raw water / concentrated water side, under the influence of osmotic pressure, salt ions from the raw water / concentrated water side tend to permeate into the pure water side. The longer the standby period, the more salt ions permeate through. If water is produced again after a period of stagnation, the salt ion concentration of the first cup of water will be higher and the desalination rate will be lower.

[0003] In traditional technology, to improve the quality of the first glass of water, the water purification equipment is usually controlled to operate in pure water recirculation mode after it has finished producing water and has been on standby for a period of time. This allows the pure water produced by the water purification equipment to flow back to the raw water side and mix with the raw water. This reduces the difference in water-salt ion concentration between the pure water side and the raw water side / concentrated water side during quiescence, thereby reducing the diffusion rate of water-salt ions on both sides of the reverse osmosis membrane during quiescence, and improving the first glass of water produced after a period of quiescence. However, in traditional technology, the water purification equipment is usually controlled to operate in pure water recirculation mode according to pre-set fixed parameters. This makes it impossible to intelligently determine the operating parameters of the pure water recirculation mode, resulting in an inability to effectively improve the operating performance of the pure water recirculation mode. Summary of the Invention

[0004] Based on this, it is necessary to provide a water purification equipment control method, device, computer equipment, computer-readable storage medium, computer program product and water purification equipment to address the technical problem that traditional technology controls the water purification equipment to operate the pure water reflux mode according to pre-set fixed parameters, and cannot intelligently determine the operating parameters of the pure water reflux mode, resulting in the inability to effectively improve the operating effect of the pure water reflux mode.

[0005] In a first aspect, the present application provides a water purification equipment control method, comprising:

[0006] Obtaining the measured pure water flow rate of pure water produced by the water purification equipment during the water production process, as well as the benchmark standby time before reflux and the benchmark reflux time of the water purification equipment at the benchmark pure water flow rate;

[0007] Determine the reflux control coefficient based on the flow difference between the measured pure water flow and the reference pure water flow;

[0008] Based on the pre-reflux benchmark standby time and the reflux control coefficient, a pre-reflux target standby time is determined, and based on the benchmark reflux time and the reflux control coefficient, an initial reflux time is determined; the pre-reflux target standby time is used to instruct the water purification equipment to operate in pure water reflux mode after water production is completed;

[0009] The initial reflux time is corrected according to the target standby time before reflux to obtain the target reflux time; the target reflux time is used to instruct the water purification equipment to stop running the pure water reflux mode when the water purification equipment runs the pure water reflux mode.

[0010] In one embodiment, determining a target standby time before reflow based on a baseline standby time before reflow and a reflow control coefficient includes:

[0011] Obtaining a first mapping relationship between a pure water flow interval and a first correction coefficient; the first correction coefficient is used to determine the standby time before running the pure water reflow mode after the water production is completed;

[0012] Determine a target flow interval to which the measured pure water flow rate belongs, and determine a first correction coefficient mapped to the target flow interval based on a first mapping relationship;

[0013] determining a pre-reflow standby control coefficient based on the mapped first correction coefficient and the reflow control coefficient;

[0014] The target standby time before reflow is determined according to the benchmark standby time before reflow and the standby control coefficient before reflow.

[0015] In one embodiment, determining the initial reflow duration based on the baseline reflow duration and the reflow control coefficient includes:

[0016] Obtaining a second mapping relationship between the pure water flow interval and the second correction coefficient; the second correction coefficient is used to determine the reflux time when the pure water reflux mode is run once;

[0017] Based on the second mapping relationship, determining a second correction coefficient mapped to the target flow interval to which the measured pure water flow belongs;

[0018] determining a reflow process control coefficient based on the mapped second correction coefficient and the reflow control coefficient;

[0019] Determine the initial reflow time based on the benchmark reflow time and the reflow process control coefficient.

[0020] In one embodiment, the initial reflow duration is corrected according to the target standby duration before reflow to obtain the target reflow duration, including:

[0021] The ratio of the target standby time before reflow to the baseline standby time before reflow is used as the reflow time correction coefficient;

[0022] The initial reflux time is corrected according to the reflux time correction coefficient to obtain the target reflux time.

[0023] In one embodiment, the water purification equipment control method further includes:

[0024] Obtain the benchmark standby time after reflux of the water purification equipment at the benchmark pure water flow rate;

[0025] The target standby time after reflow is determined based on the baseline standby time after reflow and the reflow control coefficient.

[0026] In one embodiment, determining a target standby time after reflow based on a baseline standby time after reflow and a reflow control coefficient includes:

[0027] Obtaining a third mapping relationship between the pure water flow interval and the third correction coefficient; the third correction coefficient is used to determine the standby time for restarting the pure water reflux mode after stopping the pure water reflux mode;

[0028] Based on the third mapping relationship, determining a third correction coefficient mapped to the target flow interval to which the measured pure water flow belongs;

[0029] determining a post-reflow standby control coefficient based on the mapped third correction coefficient and the reflow control coefficient;

[0030] The target standby time after reflow is determined according to the benchmark standby time after reflow and the standby control coefficient after reflow.

[0031] In one embodiment, the water purification equipment control method further includes:

[0032] When the water purification equipment finishes water production, determining the target standby time before reflux, the target reflux time, and the target standby time after reflux of the water purification equipment;

[0033] If the standby time of the water purification equipment after the water production is completed reaches the determined target standby time before reflux, the water purification equipment is controlled to operate in the pure water reflux mode until the time of operating the pure water reflux mode reaches the determined target reflux time, and the water purification equipment is controlled to stop operating in the pure water reflux mode;

[0034] If the standby time after the water purification equipment stops running in the pure water reflux mode reaches the determined target standby time after reflux, the water purification equipment is controlled to run in the pure water reflux mode.

[0035] In a second aspect, the present application also provides a water purification equipment control device. The device includes:

[0036] A data acquisition module is used to obtain the measured pure water flow rate of pure water produced by the water purification equipment during the water production process, as well as the reference standby time before reflux and the reference reflux time of the water purification equipment at the reference pure water flow rate;

[0037] A reflux control coefficient determination module, configured to determine a reflux control coefficient based on a flow rate difference between a measured pure water flow rate and a reference pure water flow rate;

[0038] A control time determination module is used to determine a target standby time before reflux based on a baseline standby time before reflux and a reflux control coefficient, and to determine an initial reflux time based on the baseline reflux time and the reflux control coefficient; the target standby time before reflux is used to instruct the water purification equipment to operate in a pure water reflux mode after water production is completed;

[0039] The control time correction module is used to correct the initial reflux time according to the target standby time before reflux to obtain the target reflux time; the target reflux time is used to instruct the water purification equipment to stop running the pure water reflux mode when the water purification equipment is running the pure water reflux mode.

[0040] In a third aspect, the present application further provides a computer device. The computer device includes a memory and a processor. The memory stores a computer program. When the processor executes the computer program, the following steps are performed:

[0041] Obtaining the measured pure water flow rate of pure water produced by the water purification equipment during the water production process, as well as the benchmark standby time before reflux and the benchmark reflux time of the water purification equipment at the benchmark pure water flow rate;

[0042] Determine the reflux control coefficient based on the flow difference between the measured pure water flow and the reference pure water flow;

[0043] Based on the pre-reflux benchmark standby time and the reflux control coefficient, a pre-reflux target standby time is determined, and based on the benchmark reflux time and the reflux control coefficient, an initial reflux time is determined; the pre-reflux target standby time is used to instruct the water purification equipment to operate in pure water reflux mode after water production is completed;

[0044] The initial reflux time is corrected according to the target standby time before reflux to obtain the target reflux time; the target reflux time is used to instruct the water purification equipment to stop running the pure water reflux mode when the water purification equipment runs the pure water reflux mode.

[0045] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the following steps:

[0046] Obtaining the measured pure water flow rate of pure water produced by the water purification equipment during the water production process, as well as the benchmark standby time before reflux and the benchmark reflux time of the water purification equipment at the benchmark pure water flow rate;

[0047] Determine the reflux control coefficient based on the flow difference between the measured pure water flow and the reference pure water flow;

[0048] Based on the pre-reflux benchmark standby time and the reflux control coefficient, a pre-reflux target standby time is determined, and based on the benchmark reflux time and the reflux control coefficient, an initial reflux time is determined; the pre-reflux target standby time is used to instruct the water purification equipment to operate in pure water reflux mode after water production is completed;

[0049] The initial reflux time is corrected according to the target standby time before reflux to obtain the target reflux time; the target reflux time is used to instruct the water purification equipment to stop running the pure water reflux mode when the water purification equipment runs the pure water reflux mode.

[0050] In a fifth aspect, the present application further provides a computer program product. The computer program product includes a computer program that, when executed by a processor, implements the following steps:

[0051] Obtaining the measured pure water flow rate of pure water produced by the water purification equipment during the water production process, as well as the benchmark standby time before reflux and the benchmark reflux time of the water purification equipment at the benchmark pure water flow rate;

[0052] Determine the reflux control coefficient based on the flow difference between the measured pure water flow and the reference pure water flow;

[0053] Based on the pre-reflux benchmark standby time and the reflux control coefficient, a pre-reflux target standby time is determined, and based on the benchmark reflux time and the reflux control coefficient, an initial reflux time is determined; the pre-reflux target standby time is used to instruct the water purification equipment to operate in pure water reflux mode after water production is completed;

[0054] The initial reflux time is corrected according to the target standby time before reflux to obtain the target reflux time; the target reflux time is used to instruct the water purification equipment to stop running the pure water reflux mode when the water purification equipment runs the pure water reflux mode.

[0055] The above-mentioned water purification equipment control method, device, computer equipment, storage medium and computer program product first obtain the measured pure water flow rate of the pure water produced by the water purification equipment during the water production process, so as to intelligently determine the operating parameters of the pure water reflux mode based on the measured pure water flow rate. Since the measured pure water flow rate can reflect the state of the reverse osmosis membrane filter element in the water purification equipment, the better the state, the higher the measured pure water flow rate. Therefore, the subsequent operation is also equivalent to intelligently determining the operating parameters of the pure water reflux mode based on the state of the reverse osmosis membrane filter element under actual working conditions. Further, the pre-reflux reference standby time and the reference reflux time of the water purification equipment under the reference pure water flow rate are obtained, and the reflux control coefficient is determined based on the flow difference between the measured pure water flow rate and the reference pure water flow rate, thereby determining the pre-reflux target standby time based on the pre-reflux reference standby time and the reflux control coefficient, and determining the initial reflux time based on the reference reflux time and the reflux control coefficient, wherein the pre-reflux target standby time is used to indicate that the water purification equipment operates in the pure water reflux mode after the water production is completed. Furthermore, the initial reflux time is corrected based on the target standby time before reflux to obtain a target reflux time, wherein the target reflux time is used to indicate that the pure water reflux mode must be stopped when the water purification equipment is operating in the pure water reflux mode. Throughout the entire process, the target standby time before reflux and the target reflux time for controlling the operation of the pure water reflux mode are determined based on the measured pure water flow rate, rather than controlling the water purification equipment to operate in the pure water reflux mode according to fixed parameters. That is, the operating parameters of the pure water reflux mode can be intelligently determined based on the state of the reverse osmosis membrane filter element in the water purification equipment under actual working conditions, thereby effectively improving the operating effect of the pure water reflux mode.

[0056] In a sixth aspect, the present application further provides a water purification device, comprising:

[0057] Reverse osmosis membrane filter element, the reverse osmosis membrane filter element is provided with a raw water inlet, a pure water outlet and a pure water return port;

[0058] A pure water branch is connected to the pure water outlet and is provided with a flow detection device for detecting the flow of pure water produced by the reverse osmosis membrane filter element during the water production process;

[0059] A pure water reflux branch, one end of which is connected to the pure water reflux port, and the other end is connected to the raw water inlet;

[0060] The controller controls the water purification equipment to operate in pure water reflux mode by executing the above-mentioned water purification equipment control method; when the water purification equipment operates in pure water reflux mode, the pure water reflux branch is connected, and the pure water produced by the reverse osmosis membrane filter element flows through the pure water reflux port through the pure water reflux branch, and then flows into the raw water inlet.

[0061] The above-mentioned water purification equipment can execute the above-mentioned water purification equipment control method, obtain the measured pure water flow rate of the pure water produced by the water purification equipment during the water production process through the flow detection device set on the pure water branch, and then determine the target pre-reflux standby time and target reflux time for controlling the pure water reflux mode based on the measured pure water flow rate under actual operating conditions, thereby controlling the water purification equipment to operate in the pure water reflux mode, rather than controlling the water purification equipment to operate in the pure water reflux mode according to pre-set fixed parameters. That is, the above-mentioned water purification equipment can intelligently determine the operating parameters of the pure water reflux mode based on the state of the reverse osmosis membrane filter element in the water purification equipment under actual operating conditions, thereby effectively improving the operating effect of the pure water reflux mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 This is an application environment diagram of a water purification equipment control method in one embodiment;

[0063] Figure 2 Schematic diagram of a flow chart of a water purification equipment control method in one embodiment;

[0064] Figure 3 1. A flow chart illustrating a process for determining a target standby time before reflux and a target reflux time according to a measured pure water flow rate under actual working conditions in one embodiment;

[0065] Figure 4 1. A flow chart of determining a target standby time before reflow based on a reference standby time before reflow and a reflow control coefficient in one embodiment;

[0066] Figure 5 FIG1 is a flow chart of determining an initial reflux duration based on a reference reflux duration and a reflux control coefficient in one embodiment;

[0067] Figure 6 A schematic diagram of a process for correcting an initial reflow duration according to a target standby duration before reflow to obtain a target reflow duration in one embodiment;

[0068] Figure 7 A schematic flow chart of a water purification equipment control method according to another embodiment;

[0069] Figure 8 1. A flow chart of determining a target standby time after reflow based on a reference standby time after reflow and a reflow control coefficient in one embodiment;

[0070] Figure 9 1 is a flow chart illustrating intelligently determining operating parameters of a pure water reflux mode based on a measured pure water flow rate under actual working conditions in one embodiment;

[0071] Figure 10 A schematic diagram of a flow chart for controlling a water purification device to operate in a pure water reflux mode according to an embodiment;

[0072] Figure 11 This is a schematic structural diagram of a water purification device in one embodiment;

[0073] Figure 12 A schematic structural diagram of a water purification device in another embodiment;

[0074] Figure 13 This is a structural block diagram of a water purification equipment control device in one embodiment;

[0075] Figure 14 FIG. 1 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0076] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0077] The water purification equipment control method provided in the embodiment of the present application can be applied to Figure 1 Specifically, the controller 102 in the water purification device 100 can communicate with the terminal 200 via a network and, in response to a water production mode start instruction triggered by a user using the terminal 200, control the water purification device 100 to operate in the water production mode. The water purification device 100 is also provided with a flow detection device 104 to detect the flow rate of pure water produced by the water purification device 100. The flow detection device 104 is connected to the controller 102 and can provide real-time feedback of the detection results to the controller 102. Based on this, the controller 102 can obtain the measured pure water flow rate of the pure water produced by the water purification equipment 100 during the water production process through the flow detection device 104, and obtain the reference standby time before reflux and the reference reflux time of the water purification equipment 100 under the reference pure water flow rate from the stored data, thereby determining the reflux control coefficient based on the flow difference between the measured pure water flow rate and the reference pure water flow rate, and then determining the target standby time before reflux based on the reference standby time before reflux and the reflux control coefficient, and determining the initial reflux time based on the reference reflux time and the reflux control coefficient, wherein the target standby time before reflux is used to instruct the water purification equipment 100 to run the pure water reflux mode after the water production is completed. Furthermore, the controller 102 can correct the initial reflux time according to the target standby time before reflux to obtain the target reflux time, wherein the target reflux time is used to instruct the water purification equipment 100 to stop running the pure water reflux mode when the water purification equipment 100 runs the pure water reflux mode.

[0078] The water purification device 100 is a device used to remove impurities and harmful substances from water, improving water quality to meet specific uses (such as drinking). The controller 102 is the core component of the water purification device 100 and can control the water purification device 100 to operate in different modes. Its operating principle is as follows: it receives input signals, such as the water production mode activation command, and after internal logic processing, issues control commands, thereby achieving automatic control of the device or system. It should be noted that the water production mode activation command can also be triggered by the user directly clicking the touch screen / button on the water purification device 100. The water purification device 100 can be equipped with a reverse osmosis membrane filter element, which filters the raw water through the reverse osmosis membrane filter element to produce pure water, and then discharges the filtered and concentrated concentrated water. The reverse osmosis membrane in the reverse osmosis membrane filter element is an artificial semipermeable membrane made by simulating the biological semipermeable membrane, allowing the reverse osmosis membrane filter element to effectively filter dissolved salts, colloids, microorganisms, etc. in the water. Flow detection device 104 can be installed at the pure water outlet of the reverse osmosis membrane filter of water purification equipment 100 to detect the flow rate of pure water produced by water purification equipment 100 during the water production process. Flow detection device 104 can specifically be a flow meter. Terminal device 200 can be, but is not limited to, various personal computers, laptops, smartphones, tablet computers, Internet of Things devices, etc.

[0079] In one embodiment, Figure 2 As shown, a water purification equipment control method is provided, which is applied to Figure 1 The controller in the example is used to illustrate the following steps:

[0080] Step 202 , obtaining the measured pure water flow rate of the pure water produced by the water purification equipment during the water production process, as well as the pre-reflux reference standby time and reference reflux time of the water purification equipment at the reference pure water flow rate.

[0081] Among them, the benchmark standby time before reflux and the benchmark reflux time are data determined in advance through multiple rounds of testing, and are related to the model of the reverse osmosis membrane filter element installed in the water purification equipment. The benchmark pure water flow rate is the flow rate of pure water produced by the reverse osmosis membrane filter element in the water purification equipment when it is in good condition. The good condition of the reverse osmosis membrane filter element means that the reverse osmosis membrane in the reverse osmosis membrane filter element is low in contamination and is not blocked. When the flow rate of pure water produced by the water purification equipment during water production reaches the benchmark pure water flow rate, if the standby time of the water purification equipment in the pure water reflux mode after the water production is completed is controlled to be the benchmark standby time before reflux, and the operating time of the water purification equipment in the pure water reflux mode is controlled to be the benchmark reflux time, the first cup of water produced by the water purification equipment after the reflux is completed can meet the standard requirements (desalination rate > 80%). That is, the benchmark standby time before reflux is the standby time before reflux obtained by testing the water purification equipment under the benchmark pure water flow rate, which allows the first cup of water to meet the standard requirements. The benchmark reflux time is the operating time of the pure water reflux mode obtained by testing the water purification equipment under the benchmark pure water flow rate, which allows the first cup of water to meet the standard requirements.

[0082] Optionally, the controller can obtain pure water flow detection data from the water purification equipment throughout the entire water production process through a flow detection device, and calculate an average pure water flow rate, which is then used as the actual measured pure water flow rate of the pure water produced by the water purification equipment during the water production process. Furthermore, the controller can obtain the pre-reflux benchmark standby time and benchmark reflux time of the water purification equipment at a benchmark pure water flow rate from pre-stored data, so as to calculate the standby time of the water purification equipment in the pure water reflux mode after the water production is completed.

[0083] Step 204 : determining a reflux control coefficient according to the flow difference between the measured pure water flow and the reference pure water flow.

[0084] Optionally, the controller may first determine the flow difference between the measured pure water flow and the reference pure water flow, and then use the ratio of the flow difference to the reference pure water flow as the reflux control coefficient.

[0085] For example, taking the benchmark pure water flow of the water purification equipment as V0 and the actual measured pure water flow of the water purification equipment after a certain water production is completed as V1, the reflux control coefficient = (actual measured pure water flow after the water production is completed - benchmark pure water flow) / benchmark pure water flow = (V1-V0) / V0.

[0086] Step 206, based on the baseline standby time before reflux and the reflux control coefficient, determine the target standby time before reflux, and based on the baseline reflux time and the reflux control coefficient, determine the initial reflux time; the target standby time before reflux is used to instruct the water purification equipment to run the pure water reflux mode after the water production is completed.

[0087] Optionally, after determining the reflux control coefficient after the end of this water production, the controller can determine the target standby time before reflux according to the preset standby time determination rule before reflux, based on the benchmark standby time before reflux and the reflux control coefficient, and determine the initial reflux time according to the preset reflux time determination rule, based on the benchmark reflux time and the reflux control coefficient.

[0088] For example, how to control the water purification equipment to operate in pure water reflux mode according to the target standby time before reflux is as follows: if the actual pure water flow rate is determined during a certain water production process, and the target standby time before reflux is determined based on the actual pure water flow rate at the end of the water production, then after the water production is completed, if the standby time of the water purification equipment reaches the determined target standby time before reflux, the controller can control the water purification equipment to operate in pure water reflux mode.

[0089] Step 208, correcting the initial reflux time according to the target standby time before reflux to obtain the target reflux time; the target reflux time is used to indicate stopping the pure water reflux mode when the water purification equipment is running the pure water reflux mode.

[0090] It should be noted that during the standby process, the reverse osmosis membrane filter element in the water purification equipment is in a state of being soaked in water. There is raw water on the raw water side of the reverse osmosis membrane filter element, concentrated water on the concentrated water side, and pure water on the pure water side. Under the action of osmotic pressure, the longer the standby time before running the pure water reflux mode, the more water salt ions (salt) of the raw water / concentrated water will penetrate into the pure water through the reverse osmosis membrane, resulting in a higher salt content in the pure water (increased within a certain limit, the salt content of the pure water is not higher than that of the raw water), affecting the subsequent operation of the pure water reflux mode, resulting in the need to consume more pure water to dilute the raw water, but the pure water output is limited. In order to ensure the operation effect of the pure water reflux mode, it is necessary to increase the operation time of the pure water reflux mode.

[0091] Based on this, considering that the standby time before running the pure water reflux mode after the water production is completed has an impact on the pure water reflux, the controller can correct the initial reflux time according to the preset standby time correction rule before reflux and the target standby time before reflux to obtain the target reflux time.

[0092] For example, how to control the water purification equipment to run the pure water reflux mode according to the target reflux time is as follows: if the actual pure water flow rate is determined during a certain water production process, and the water purification equipment is controlled to run the pure water reflux mode after the target standby time before waiting for reflux after the water production is completed, the water purification equipment can be controlled to stop running the pure water reflux mode when the running time of the pure water reflux mode reaches the target reflux time.

[0093] Based on steps 202 to 208, if Figure 3 As shown, a flow chart of determining the target standby time before reflux and the target reflux time according to the measured pure water flow under actual working conditions is provided, which mainly includes the following processes:

[0094] Step 302, in response to the water production mode start instruction, controlling the water purification equipment to operate in the water production mode;

[0095] Step 304: Obtain the measured pure water flow rate of pure water produced by the water purification equipment during the water production process, as well as the pre-reflux reference standby time and reference reflux time of the water purification equipment at the reference pure water flow rate;

[0096] If the water purification equipment has not finished producing water, execute step 306 to monitor the actual pure water flow rate;

[0097] If the water purification device has finished producing water, step 308 is executed to determine the reflux control coefficient based on the flow difference between the measured pure water flow rate and the reference pure water flow rate;

[0098] Step 310, determining a target standby time before reflow based on the baseline standby time before reflow and the reflow control coefficient;

[0099] Step 312, determining an initial reflow duration based on the baseline reflow duration and the reflow control coefficient;

[0100] Step 314 , correcting the initial reflow duration according to the target standby duration before reflow to obtain a target reflow duration.

[0101] The above-mentioned water purification equipment control method first obtains the measured pure water flow rate of the pure water produced by the water purification equipment during the water production process, so as to intelligently determine the operating parameters of the pure water reflux mode based on the measured pure water flow rate. Since the measured pure water flow rate can reflect the state of the reverse osmosis membrane filter element in the water purification equipment, the better the state, the higher the measured pure water flow rate. Therefore, the subsequent operation is equivalent to intelligently determining the operating parameters of the pure water reflux mode based on the state of the reverse osmosis membrane filter element under actual working conditions. Further, the pre-reflux reference standby time and the reference reflux time of the water purification equipment under the reference pure water flow rate are obtained, and the reflux control coefficient is determined based on the flow difference between the measured pure water flow rate and the reference pure water flow rate, thereby determining the pre-reflux target standby time based on the pre-reflux reference standby time and the reflux control coefficient, and determining the initial reflux time based on the reference reflux time and the reflux control coefficient, wherein the pre-reflux target standby time is used to indicate that the water purification equipment runs the pure water reflux mode after the water production is completed. Furthermore, the initial reflux time is corrected based on the target standby time before reflux to obtain a target reflux time, wherein the target reflux time is used to indicate that the pure water reflux mode must be stopped when the water purification equipment is operating in the pure water reflux mode. Throughout the entire process, the target standby time before reflux and the target reflux time for controlling the operation of the pure water reflux mode are determined based on the measured pure water flow rate, rather than controlling the water purification equipment to operate in the pure water reflux mode according to fixed parameters. That is, the operating parameters of the pure water reflux mode can be intelligently determined based on the state of the reverse osmosis membrane filter element in the water purification equipment under actual working conditions, thereby effectively improving the operating effect of the pure water reflux mode.

[0102] Regarding how to determine the target standby time before reflow based on the baseline standby time before reflow and the reflow control coefficient, in a possible implementation, Figure 3 On the basis of Figure 4 As shown, step 310 also includes steps 402 to 408, wherein:

[0103] Step 402: Acquire a first mapping relationship between a pure water flow interval and a first correction coefficient; the first correction coefficient is used to determine a standby time before running the pure water reflow mode after the water production is completed.

[0104] It should be noted that different pure water flow intervals characterize different states of the reverse osmosis membrane filter element. For each model of water purification equipment, the tester can pre-select the corresponding first pure water flow value and the second pure water flow value. Furthermore, taking [first pure water flow, +∞) as the first pure water flow interval, when the flow rate of pure water produced by the reverse osmosis membrane filter element is within the first pure water flow interval, it characterizes that the state of the reverse osmosis membrane filter element is better. Taking [second pure water flow, first pure water flow) as the second pure water flow interval, when the flow rate of pure water produced by the reverse osmosis membrane filter element is within the second pure water flow interval, it characterizes that the state of the reverse osmosis membrane filter element is generally. After the reverse osmosis membrane filter element has been used for a period of time, due to the contamination of the reverse osmosis membrane filter element, the flow rate of pure water produced by it will usually drop to the second pure water flow interval. Take (0, the second pure water flow rate) as the third pure water flow rate interval. When the flow rate of pure water produced by the reverse osmosis membrane filter element is within the third pure water flow rate interval, it indicates that the condition of the reverse osmosis membrane filter element is not good. After the reverse osmosis membrane filter element has been used for a long period of time, the degree of contamination of the reverse osmosis membrane filter element deepens and the membrane is blocked. The flow rate of pure water produced by the reverse osmosis membrane filter element will usually drop to the third pure water flow rate interval.

[0105] Furthermore, for each model of water purification equipment, after dividing the pure water flow range, the tester can pre-run multiple rounds of testing on the reverse osmosis membrane filter element of the model in different states to determine the first mapping relationship between the pure water flow range of the water purification equipment and the first correction coefficient, and store the first mapping relationship in the controller of the water purification equipment. Based on this, the controller can obtain the first mapping relationship between the pure water flow range of the water purification equipment and the first correction coefficient from the stored data. Specifically, the multiple rounds of testing can be: when the flow rate of pure water produced by the water purification equipment is within a certain pure water flow range, what values ​​of the first correction coefficient, the second correction coefficient, and the third correction coefficient can ensure that the first cup of water meets the standard requirements after running the pure water reflux mode according to the calculated pre-reflux standby time, reflux time (single operation time of the reflux mode), and post-reflux standby time. The multiple rounds of testing process can be used not only to determine the first mapping relationship, but also to determine the second and third mapping relationships.

[0106] Step 404 : Determine the target flow interval to which the measured pure water flow belongs, and determine a first correction coefficient mapped to the target flow interval based on the first mapping relationship.

[0107] Optionally, the controller may first determine the target flow interval to which the measured pure water flow belongs, and then determine the first correction coefficient mapped to the target flow interval by querying the first mapping relationship. For example, when the target flow interval to which the measured pure water flow after water production is completed belongs is the first pure water flow interval, the first correction coefficient mapped to the first pure water flow interval in the first mapping relationship is used as the first correction coefficient mapped to the target flow interval; when the target flow interval to which the measured pure water flow after water production is completed belongs is the second pure water flow interval, the first correction coefficient mapped to the second pure water flow interval in the first mapping relationship is used as the first correction coefficient mapped to the target flow interval, and so on.

[0108] Step 406 : Determine a pre-reflow standby control coefficient based on the mapped first correction coefficient and the reflow control coefficient.

[0109] Alternatively, the controller may determine the pre-reflow standby control coefficient based on a product of the mapped first correction coefficient and the reflow control coefficient.

[0110] For example, the measured pure water reflux volume of the water purification equipment during the water production process is V1, the benchmark pure water flow rate of the water purification equipment is V0, and the first correction coefficient mapped by the target flow interval is k. The reflux control coefficient can be specifically (V1-V0) / V0, then the standby control coefficient before reflux = 1-k·(V1-V0) / V0.

[0111] Step 408 : determining a target standby time before reflow according to the reference standby time before reflow and the standby control coefficient before reflow.

[0112] Optionally, the controller may use the product of the pre-reflow reference standby time and the pre-reflow standby control coefficient as the pre-reflow target standby time.

[0113] For example, assuming the pre-reflux standby control coefficient is 1-k·(V1-V0) / V0 and the pre-reflux baseline standby time is A0, the pre-reflux target standby time T1 = A0·[1-k·(V1-V0) / V0]. The larger the measured pure water flow rate V1, the better the reverse osmosis membrane filter element condition (the better the filtration effect), and the greater the concentration difference between the raw water side and the pure water side. Under a larger concentration difference, the water salt ion permeation rate will be faster, and the pure water reflux mode needs to be operated as soon as possible during static operation. Therefore, the pre-reflux target standby time T1 is inversely proportional to the measured pure water flow rate V1. The larger the measured pure water flow rate V1, the shorter the pre-reflux target standby time T1.

[0114] In this embodiment, the target standby time before reflux after the water production is completed can be calculated based on the actual measured pure water flow rate at the end of water production, so that when the standby time after the water purification equipment completes water production reaches the target standby time before reflux, the water purification equipment can be timely controlled to operate in the pure water reflux mode. That is, the target standby time before reflux can be intelligently determined based on the state of the reverse osmosis membrane filter element in the water purification equipment under actual working conditions, which is conducive to intelligent control of the operation of the pure water reflux mode and improves the operation effect of the pure water reflux mode.

[0115] Regarding how to determine the initial reflow duration based on the benchmark reflow duration and the reflow control coefficient, in one embodiment, Figure 3 On the basis of Figure 5 As shown, step 312 also includes steps 502 to 508, wherein:

[0116] Step 502 : obtaining a second mapping relationship between the pure water flow interval and the second correction coefficient; the second correction coefficient is used to determine the reflux time length during a single operation of the pure water reflux mode.

[0117] For example, for each model of water purification equipment, the tester can pre-construct a first pure water flow interval [first pure water flow, +∞), a second pure water flow interval [second pure water flow, first pure water flow), and a third pure water flow interval (0, second pure water flow). After dividing the pure water flow intervals, the tester can pre-run multiple rounds of tests on the reverse osmosis membrane filter element in different states under the model to determine the second mapping relationship between the pure water flow interval of the water purification equipment of this model and the second correction coefficient, and store the second mapping relationship in the controller of the water purification equipment of this model. Based on this, the controller can obtain the second mapping relationship between the pure water flow interval and the second correction coefficient from the stored data.

[0118] Step 504 : Based on the second mapping relationship, determine a second correction coefficient mapped to the target flow interval to which the measured pure water flow belongs.

[0119] Optionally, the controller may first determine the target flow interval to which the measured pure water flow rate belongs, and then determine the second correction coefficient mapped to the target flow interval by querying the second mapping relationship. For example, when the target flow interval to which the measured pure water flow rate after water production is completed belongs is the first pure water flow interval, the second correction coefficient mapped to the first pure water flow interval in the second mapping relationship is used as the second correction coefficient mapped to the target flow interval, and so on.

[0120] Step 506 : Determine a reflow process control coefficient based on the mapped second correction coefficient and the reflow control coefficient.

[0121] Alternatively, the controller may determine the backflow process control coefficient based on a product of the mapped second correction coefficient and the backflow control coefficient.

[0122] For example, the measured pure water reflux volume of the water purification equipment during the water production process is V1, the benchmark pure water flow rate of the water purification equipment is V0, and the second correction coefficient mapped by the target flow interval is g. The reflux control coefficient can be specifically (V1-V0) / V0, then the reflux process control coefficient = 1+g·(V1-V0) / V0.

[0123] Step 508: Determine the initial reflow duration according to the reference reflow duration and the reflow process control coefficient.

[0124] Optionally, the controller may use the product of the reference reflow time and the reflow process control coefficient as the initial reflow time.

[0125] For example, taking the reflux process control coefficient as 1+g·(V1-V0) / V0 and the benchmark reflux time as B0 as an example, the initial reflux time T2'=B0·[1+g·(V1-V0) / V0]. Among them, the larger the measured pure water flow rate V1, the better the state of the reverse osmosis membrane filter element, and the greater the concentration difference between the raw water side and the pure water side. Under a larger concentration difference, the water salt ion penetration rate will be faster, and the water salt ion concentration of the pure water will be higher after standing. In order to effectively improve the pure water reflux effect, it is necessary to increase the single pure water reflux time. Therefore, the initial reflux time T2' is directly proportional to the measured pure water flow rate V1. The larger the measured pure water flow rate V1, the longer the initial reflux time T2'.

[0126] In this embodiment, the initial reflux duration can be intelligently determined based on the actual measured pure water flow rate at the end of water production, that is, combined with the state of the reverse osmosis membrane filter element in the water purification equipment under actual working conditions, which is conducive to intelligent control of the operation of the pure water reflux mode and improves the operation effect of the pure water reflux mode.

[0127] Regarding how to correct the initial reflow duration according to the target standby duration before reflow, to obtain the target reflow duration, in one embodiment, Figure 3 On the basis of Figure 6 As shown, step 314 also includes steps 602 to 604, which include:

[0128] Step 602: The ratio of the target standby time before reflow to the reference standby time before reflow is used as a reflow time correction coefficient.

[0129] Optionally, the controller may use the ratio of the target standby time before reflow to the reference standby time before reflow as the reflow time correction coefficient. For example, if the target standby time before reflow is T1 and the reference standby time before reflow is A0, the reflow time correction coefficient = T1 / A0.

[0130] Step 604: Correct the initial reflow duration according to the reflow duration correction coefficient to obtain a target reflow duration.

[0131] Optionally, the controller may multiply the reflow time correction coefficient by the initial reflow time according to a preset reflow time determination rule to correct the initial reflow time and obtain the target reflow time.

[0132] For example, taking the initial reflux time as T2'=B0[1+g(V1-V0) / V0] and the reflux time correction coefficient as T1 / A0, the target reflux time is T2=T2'(T1 / A0)={B0[1+g(V1-V0) / V0]}(T1 / A0). During the standby period, the reverse osmosis membrane element in the water purification equipment is immersed in water. Under the action of osmotic pressure, the longer the standby time before running the pure water reflux mode, the more salt ions (salt) in the raw water / concentrated water penetrate into the pure water through the reverse osmosis membrane, and the longer the pure water reflux mode needs to be run. Therefore, the target reflux time T2 is directly proportional to the target standby time T1 before reflux.

[0133] In this embodiment, considering that the standby time before running the pure water reflux mode after the water production is completed has an impact on the pure water reflux, the initial reflux time is corrected according to the target standby time before reflux, so that the operation of the pure water reflux mode can be controlled based on the corrected target reflux time to improve the operation effect of the pure water reflux mode.

[0134] In actual application, in order to control the water purification equipment to run the pure water reflux mode, in addition to obtaining the target standby time before reflux and the target reflux time, it is also necessary to obtain the target standby time after reflux, so that when the standby time after the reflux of the water purification equipment reaches the target standby time after reflux, the water purification equipment can be controlled to run the pure water reflux mode again. Based on this, in one embodiment, Figure 2 On the basis of Figure 7 As shown, the water purification equipment control method also includes:

[0135] Step 702: Obtain a reference standby time after reflux of the water purification equipment at a reference pure water flow rate.

[0136] Among them, the benchmark standby time after reflux is data determined in advance through multiple rounds of testing and is related to the model of the reverse osmosis membrane filter element installed in the water purification equipment. When the flow rate of pure water produced by the water purification equipment during water production reaches the benchmark pure water flow rate, if the standby time of the water purification equipment in the pure water reflux mode after water production is completed is controlled to be the benchmark standby time before reflux, the operating time when running the pure water reflux mode is the benchmark reflux time, and the standby time when running the pure water reflux mode again after running the pure water reflux mode is the benchmark standby time after reflux, the first cup of water produced by the water purification equipment after the reflux is completed can meet the standard requirements (salinity removal rate > 80%). In other words, the benchmark standby time after reflux is the standby time after reflux obtained by testing the water purification equipment at the benchmark pure water flow rate, which enables the first cup of water to meet the standard requirements.

[0137] Optionally, the controller may obtain a reference standby time after reflux of the water purification equipment at a reference pure water flow rate from pre-stored data.

[0138] Step 704 : Determine a target standby time after reflow based on the baseline standby time after reflow and the reflow control coefficient.

[0139] Optionally, the controller may determine the target standby time after reflow according to a preset rule for determining the standby time after reflow, based on the reference standby time after reflow and the reflow control coefficient.

[0140] For example, how to control the water purification equipment to operate the pure water reflux mode according to the target standby time after reflux is as follows: if the actual pure water flow rate is determined during a certain water production process, and the target standby time after reflux is determined based on the actual pure water flow rate at the end of the water production, then after the pure water reflux mode operation after that time ends, if the standby time of the water purification equipment reaches the determined target standby time after reflux, the controller can control the water purification equipment to operate the pure water reflux mode again.

[0141] In this embodiment, the target standby time after reflux can be intelligently determined based on the actual measured pure water flow rate at the end of water production (the state of the reverse osmosis membrane filter element in the water purification equipment under actual working conditions), which is conducive to intelligent control of the operation of the pure water reflux mode and improves the operation effect of the pure water reflux mode.

[0142] Regarding how to determine the target standby time after reflow based on the benchmark standby time after reflow and the reflow control coefficient, in one exemplary embodiment, Figure 7 On the basis of Figure 8 As shown, step 704 also includes steps 802 to 808, which include:

[0143] Step 802 , obtaining a third mapping relationship between the pure water flow interval and the third correction coefficient; the third correction coefficient is used to determine the standby time for restarting the pure water reflux mode after stopping the pure water reflux mode.

[0144] For example, for each model of water purification equipment, the tester can pre-construct a first pure water flow interval [first pure water flow, +∞), a second pure water flow interval [second pure water flow, first pure water flow), and a third pure water flow interval (0, second pure water flow). After dividing the pure water flow intervals, the tester can pre-run multiple rounds of tests on the reverse osmosis membrane filter element in different states under the model to determine the third mapping relationship between the pure water flow interval of the water purification equipment of this model and the third correction coefficient, and store the third mapping relationship in the controller of the water purification equipment of this model. Based on this, the controller can obtain the third mapping relationship between the pure water flow interval and the third correction coefficient from the stored data.

[0145] Step 804 : Based on the third mapping relationship, determine a third correction coefficient mapped to the target flow interval to which the measured pure water flow belongs.

[0146] Optionally, the controller may first determine the target flow interval to which the measured pure water flow rate belongs, and then determine the third correction coefficient mapped to the target flow interval by querying the third mapping relationship. For example, if the target flow interval to which the measured pure water flow rate after water production is completed belongs is the first pure water flow interval, the third correction coefficient mapped to the first pure water flow interval in the third mapping relationship is used as the third correction coefficient mapped to the target flow interval, and so on.

[0147] Step 806 : Determine a post-reflow standby control coefficient based on the mapped third correction coefficient and the reflow control coefficient.

[0148] Alternatively, the controller may determine the post-reflow standby control coefficient based on a product of the mapped third correction coefficient and the reflow control coefficient.

[0149] For example, the measured pure water reflux volume of the water purification equipment during the water production process is V1, the benchmark pure water flow rate of the water purification equipment is V0, and the third correction coefficient mapped by the target flow interval is h. The reflux control coefficient can be specifically (V1-V0) / V0, then the standby control coefficient after reflux = 1-h·(V1-V0) / V0.

[0150] Step 808 : determining a target standby time after reflow according to the reference standby time after reflow and the standby control coefficient after reflow.

[0151] Optionally, the controller may use the product of the post-reflow reference standby time and the post-reflow standby control coefficient as the post-reflow target standby time.

[0152] For example, taking the post-reflux standby control coefficient as 1-h·(V1-V0) / V0 and the post-reflux benchmark standby time as C0, the post-reflux target standby time T3 = C0·[1-h·(V1-V0) / V0]. The larger the measured pure water flow rate V1, the better the state of the reverse osmosis membrane filter element, and the greater the concentration difference between the raw water side and the pure water side. Under a large concentration difference, the water and salt ion permeation rate will be faster, and the pure water reflux mode needs to be run as soon as possible during static operation. Therefore, the post-reflux target standby time T3 is inversely proportional to the measured pure water flow rate V1. The larger the measured pure water flow rate V1, the shorter the post-reflux target standby time T3.

[0153] In this embodiment, the target standby time after reflux can be calculated based on the actual measured pure water flow rate at the end of water production, so that when the standby time after the reflux of the water purification equipment reaches the target standby time after reflux, the water purification equipment can be controlled in time to operate the pure water reflux mode. That is, the target standby time after reflux can be intelligently determined based on the state of the reverse osmosis membrane filter element in the water purification equipment under actual working conditions, which is conducive to intelligent control of the operation of the pure water reflux mode and improves the operation effect of the pure water reflux mode.

[0154] Based on the above embodiments, Figure 9 As shown, a flow chart of intelligently determining the operating parameters of the pure water reflux mode based on the measured pure water flow under actual working conditions is provided, which mainly includes the following steps:

[0155] Step 902, in response to the water production mode start instruction, controlling the water purification equipment to operate in the water production mode;

[0156] Step 904: Obtain the measured pure water flow rate of pure water produced by the water purification equipment during the water production process, as well as the pre-reflux reference standby time, reference reflux time, and post-reflux reference standby time of the water purification equipment at the reference pure water flow rate;

[0157] If the water purification equipment has not finished producing water, execute step 906 to monitor the actual pure water flow rate;

[0158] If the water purification device has finished producing water, step 908 is executed to determine the reflux control coefficient based on the flow difference between the measured pure water flow rate and the reference pure water flow rate;

[0159] Step 910, determining a target standby time before reflow based on the baseline standby time before reflow and the reflow control coefficient;

[0160] Step 912, determining an initial reflow duration based on the baseline reflow duration and the reflow control coefficient;

[0161] Step 914, determining a target standby time after reflow based on the baseline standby time after reflow and the reflow control coefficient;

[0162] Step 916 , using the ratio of the target standby time before reflow to the reference standby time before reflow as a reflow time correction coefficient;

[0163] Step 918: Correct the initial reflux time according to the reflux time correction coefficient to obtain a target reflux time.

[0164] Step 920 : Based on the target standby time before reflux, the target reflux time, and the target standby time after reflux, the water purification equipment is controlled to operate in a pure water reflux mode.

[0165] In one embodiment, Figure 10 As shown, a flow chart of controlling the operation of the pure water reflux mode of the water purification equipment is provided, which mainly includes the following steps:

[0166] Step 1002, in response to the water production mode start instruction, controlling the water purification equipment to operate in the water production mode;

[0167] Step 1004, monitoring the measured purified water flow rate of the purified water produced by the water purification equipment;

[0168] When the water purification device finishes producing water, step 1006 is executed to determine the target standby time before reflux, the target reflux time, and the target standby time after reflux of the water purification device based on the measured purified water flow rate; otherwise, the process returns to step 1004;

[0169] If the standby time after the water purification device finishes water production reaches the determined target standby time before reflux, execute step 1008 to control the water purification device to operate in pure water reflux mode; otherwise, execute step 1010 to continue monitoring the standby time;

[0170] If the duration of the pure water reflux mode of the water purification device reaches the target reflux time, execute step 1012 to control the water purification device to stop running the pure water reflux mode; otherwise, return to step 1008;

[0171] If the standby time after the water purification equipment stops running in the pure water reflux mode reaches the determined target standby time after reflux, execute step 1014 to control the water purification equipment to run in the pure water reflux mode; otherwise, execute step 1016 to continue monitoring the standby time.

[0172] In this embodiment, the target standby time before reflux, the target reflux time and the target standby time after reflux for controlling the operation of the pure water reflux mode can be determined based on the measured pure water flow rate, instead of controlling the water purification equipment to operate the pure water reflux mode according to fixed parameters. That is, the operating parameters of the pure water reflux mode can be intelligently determined according to the state of the reverse osmosis membrane filter element in the water purification equipment under actual working conditions, thereby effectively improving the operating effect of the pure water reflux mode.

[0173] It should be understood that, although the steps in the flowcharts of the above embodiments are shown in sequence as indicated by the arrows, these steps are not necessarily performed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be performed in other orders. Moreover, at least a portion of the steps in the flowcharts of the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily performed at the same time, but can be performed at different times. The execution order of these steps or stages is not necessarily to be performed in sequence, but can be performed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0174] The embodiment of the present application also provides a water purification device 1100 for implementing the above-mentioned water purification device control method. Figure 11 As shown, a schematic structural diagram of a water purification device 1100 is provided, wherein the water purification device 1100 includes:

[0175] The reverse osmosis membrane filter element 1101 is provided with a raw water inlet, a pure water outlet and a pure water return port;

[0176] Pure water branch 1102, pure water branch 1102 is connected to the pure water outlet, and a flow detection device 1103 is provided on the pure water branch 1102, and the flow detection device 1103 is used to detect the flow of pure water produced by the reverse osmosis membrane filter element 1101 during the water production process;

[0177] Pure water reflux branch 1104, one end of the pure water reflux branch 1104 is connected to the pure water reflux port, and the other end is connected to the raw water inlet.

[0178] Among them, the water purification equipment 1100 also includes a controller (not shown in the figure), which controls the water purification equipment 1100 to operate in pure water reflux mode by executing the above-mentioned water purification equipment control method; when the water purification equipment 1100 operates in pure water reflux mode, the pure water reflux branch 1104 is turned on, and the pure water produced by the reverse osmosis membrane filter element 1101 flows through the pure water reflux port, through the pure water reflux branch 1104, and then flows into the raw water inlet.

[0179] The above-mentioned water purification equipment can execute the above-mentioned water purification equipment control method, obtain the measured pure water flow rate of the pure water produced by the water purification equipment during the water production process through the flow detection device set on the pure water branch, and then determine the target pre-reflux standby time and target reflux time for controlling the pure water reflux mode based on the measured pure water flow rate under actual operating conditions, thereby controlling the water purification equipment to operate in the pure water reflux mode, rather than controlling the water purification equipment to operate in the pure water reflux mode according to pre-set fixed parameters. That is, the above-mentioned water purification equipment can intelligently determine the operating parameters of the pure water reflux mode based on the state of the reverse osmosis membrane filter element in the water purification equipment under actual operating conditions, thereby effectively improving the operating effect of the pure water reflux mode.

[0180] For example, Figure 12 As shown, another structural schematic diagram of the water purification device 1100 is provided, wherein the water purification device 1100 may also be provided with a raw water branch 1105 to connect the raw water to the raw water inlet of the reverse osmosis membrane filter element 1101, and a pressure-stabilizing pump 1106 may be provided on the raw water branch 1105 to stabilize the water pressure of the water flowing into the raw water inlet of the reverse osmosis membrane filter element 1101. In addition, a first water inlet solenoid valve 1107 and a check valve 1108 may be provided in the pure water return branch 1104 of the water purification device 1100. When the water purification device 1100 is operating in the pure water return mode, the controller may control the first water inlet solenoid valve 1107 to be turned on, so that the pure water return branch 1104 is turned on, and the pure water produced by the reverse osmosis membrane filter element 1101 can flow through the pure water return port, through the pure water return branch 1104, and then into the raw water inlet. Check valve 1108 ensures unidirectional conduction of pure water return branch 1104. When operating in pure water return mode, pure water produced by reverse osmosis membrane filter element 1101 can flow from the pure water return port into pure water return branch 1104, pass through first water inlet solenoid valve 1107, check valve 1108, and pressure-stabilizing pump 1106, and then mix with raw water before flowing into the raw water inlet of reverse osmosis membrane filter element 1101. Furthermore, water purification equipment 1100 can be provided with a concentrated water branch 1109 to discharge concentrated raw water. A second water inlet solenoid valve 1110 can be provided on concentrated water branch 1109 to control the conduction of concentrated water branch 1109.

[0181] Based on the same inventive concept, the present application also provides a water purification equipment control device for implementing the aforementioned water purification equipment control method. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more water purification equipment control device embodiments provided below can be found in the above-mentioned limitations of the water purification equipment control method and will not be repeated here.

[0182] In one embodiment, Figure 13As shown, a water purification equipment control device is provided, including: a data acquisition module 1302, a backflow control coefficient determination module 1304, a control time determination module 1306 and a control time correction module 1308, wherein:

[0183] A data acquisition module is used to obtain the measured pure water flow rate of pure water produced by the water purification equipment during the water production process, as well as the reference standby time before reflux and the reference reflux time of the water purification equipment at the reference pure water flow rate;

[0184] A reflux control coefficient determination module, configured to determine a reflux control coefficient based on a flow rate difference between a measured pure water flow rate and a reference pure water flow rate;

[0185] A control time determination module is used to determine a target standby time before reflux based on a baseline standby time before reflux and a reflux control coefficient, and to determine an initial reflux time based on the baseline reflux time and the reflux control coefficient; the target standby time before reflux is used to instruct the water purification equipment to operate in a pure water reflux mode after water production is completed;

[0186] The control time correction module is used to correct the initial reflux time according to the target standby time before reflux to obtain the target reflux time; the target reflux time is used to instruct the water purification equipment to stop running the pure water reflux mode when the water purification equipment is running the pure water reflux mode.

[0187] The above-mentioned water purification equipment control device first obtains the measured pure water flow rate of the pure water produced by the water purification equipment during the water production process, so as to intelligently determine the operating parameters of the pure water reflux mode based on the measured pure water flow rate. Since the measured pure water flow rate can reflect the state of the reverse osmosis membrane filter element in the water purification equipment, the better the state, the higher the measured pure water flow rate. Therefore, the subsequent operation parameters of the pure water reflux mode are also equivalent to intelligently determining the state of the reverse osmosis membrane filter element under actual working conditions. Further, the pre-reflux reference standby time and the reference reflux time of the water purification equipment under the reference pure water flow rate are obtained, and the reflux control coefficient is determined based on the flow difference between the measured pure water flow rate and the reference pure water flow rate, thereby determining the pre-reflux target standby time based on the pre-reflux reference standby time and the reflux control coefficient, and determining the initial reflux time based on the reference reflux time and the reflux control coefficient, wherein the pre-reflux target standby time is used to indicate that the water purification equipment runs the pure water reflux mode after the water production is completed. Furthermore, the initial reflux time is corrected based on the target standby time before reflux to obtain a target reflux time, wherein the target reflux time is used to indicate that the pure water reflux mode must be stopped when the water purification equipment is operating in the pure water reflux mode. Throughout the entire process, the target standby time before reflux and the target reflux time for controlling the operation of the pure water reflux mode are determined based on the measured pure water flow rate, rather than controlling the water purification equipment to operate in the pure water reflux mode according to fixed parameters. That is, the operating parameters of the pure water reflux mode can be intelligently determined based on the state of the reverse osmosis membrane filter element in the water purification equipment under actual working conditions, thereby effectively improving the operating effect of the pure water reflux mode.

[0188] In one embodiment, the control time determination module is also used to: obtain a first mapping relationship between the pure water flow interval and the first correction coefficient; the first correction coefficient is used to determine the standby time before running the pure water reflux mode after the water production is completed; determine the target flow interval to which the measured pure water flow belongs, and based on the first mapping relationship, determine the first correction coefficient mapped to the target flow interval; based on the mapped first correction coefficient and the reflux control coefficient, determine the pre-reflux standby control coefficient; determine the pre-reflux target standby time according to the pre-reflux benchmark standby time and the pre-reflux standby control coefficient.

[0189] In one embodiment, the control time determination module is also used to: obtain a second mapping relationship between the pure water flow interval and the second correction coefficient; the second correction coefficient is used to determine the reflux time during a single operation of the pure water reflux mode; based on the second mapping relationship, determine the second correction coefficient mapped to the target flow interval to which the measured pure water flow belongs; based on the mapped second correction coefficient and the reflux control coefficient, determine the reflux process control coefficient; determine the initial reflux time based on the benchmark reflux time and the reflux process control coefficient.

[0190] In one embodiment, the control time correction module is further used to: use the ratio of the target standby time before reflow to the reference standby time before reflow as a reflow time correction coefficient; and correct the initial reflow time according to the reflow time correction coefficient to obtain the target reflow time.

[0191] In one embodiment, the control time determination module is also used to: obtain the benchmark standby time after reflux of the water purification equipment under the benchmark pure water flow rate; determine the target standby time after reflux based on the benchmark standby time after reflux and the reflux control coefficient.

[0192] In one embodiment, the control time determination module is also used to: obtain a third mapping relationship between the pure water flow interval and the third correction coefficient; the third correction coefficient is used to determine the standby time for running the pure water reflux mode again after stopping the pure water reflux mode; based on the third mapping relationship, determine the third correction coefficient mapped to the target flow interval to which the measured pure water flow belongs; based on the mapped third correction coefficient and the reflux control coefficient, determine the post-reflux standby control coefficient; determine the post-reflux target standby time according to the post-reflux benchmark standby time and the post-reflux standby control coefficient.

[0193] In one embodiment, the water purification equipment control device also includes a reflux control module, which is used to: when the water purification equipment finishes water production, determine the target standby time before reflux, the target reflux time and the target standby time after reflux of the water purification equipment; if the standby time after the water purification equipment finishes water production reaches the determined target standby time before reflux, control the water purification equipment to run the pure water reflux mode until the time for running the pure water reflux mode reaches the determined target reflux time, and control the water purification equipment to stop running the pure water reflux mode; if the standby time after the water purification equipment stops running the pure water reflux mode reaches the determined target standby time after reflux, control the water purification equipment to run the pure water reflux mode.

[0194] Each module in the above-mentioned water purification equipment control device can be implemented in whole or in part through software, hardware, or a combination thereof. Each of the above-mentioned modules can be embedded in or independent of the processor of the computer device in hardware form, or can be stored in the memory of the computer device in software form, so that the processor can call and execute the corresponding operations of each of the above modules.

[0195] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Figure 14As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, abbreviated as I / O) and a communication interface. The processor, memory and input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The database of the computer device is used to store water purification equipment control data. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a water purification equipment control method is implemented.

[0196] Those skilled in the art will understand that Figure 14 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0197] In one embodiment, a computer device is provided, including a memory and a processor. The memory stores a computer program, and the processor implements the steps in the above method embodiments when executing the computer program.

[0198] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0199] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0200] It should be noted that the information (including but not limited to device information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of relevant countries and regions.

[0201] Those skilled in the art will appreciate that all or part of the processes in the above-described method embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the above-described method embodiments. Any reference to a memory, database, or other medium used in the embodiments provided herein may include at least one of non-volatile and volatile memory. Non-volatile memory may 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 may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processors involved in the various embodiments provided herein may be, but are not limited to, general-purpose processors, central processing units (CPUs), graphics processors (GPUs), digital signal processors (DSPs), programmable logic devices (PLDs), data processing logic devices based on quantum computing, and the like.

[0202] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, 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.

[0203] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A water purification equipment control method, characterized in that: The method comprises: Obtaining the measured pure water flow rate of pure water produced by the water purification equipment during the water production process, as well as the pre-reflux reference standby time and reference reflux time of the water purification equipment at the reference pure water flow rate; determining a reflux control coefficient according to a flow rate difference between the measured pure water flow rate and the reference pure water flow rate; Based on the pre-reflux benchmark standby time and the reflux control coefficient, a pre-reflux target standby time is determined, and based on the benchmark reflux time and the reflux control coefficient, an initial reflux time is determined; the pre-reflux target standby time is used to instruct the water purification equipment to operate in a pure water reflux mode after water production is completed; The initial reflux time is corrected according to the target standby time before reflux to obtain a target reflux time; the target reflux time is used to instruct the water purification equipment to stop running the pure water reflux mode when the water purification equipment runs the pure water reflux mode.

2. The method according to claim 1, characterized in that The determining of the target standby time before reflow based on the reference standby time before reflow and the reflow control coefficient includes: Obtaining a first mapping relationship between a pure water flow interval and a first correction coefficient; the first correction coefficient is used to determine a standby time before running the pure water reflux mode after water production is completed; Determine a target flow interval to which the measured pure water flow rate belongs, and determine a first correction coefficient mapped to the target flow interval based on the first mapping relationship; determining a pre-reflow standby control coefficient based on the mapped first correction coefficient and the reflow control coefficient; A target standby time before reflow is determined according to the reference standby time before reflow and the standby control coefficient before reflow.

3. The method according to claim 1, characterized in that The determining of the initial reflow duration based on the benchmark reflow duration and the reflow control coefficient includes: Obtaining a second mapping relationship between the pure water flow interval and the second correction coefficient; the second correction coefficient is used to determine the reflux time when the pure water reflux mode is run once; Based on the second mapping relationship, determining a second correction coefficient mapped to the target flow interval to which the measured pure water flow belongs; determining a reflow process control coefficient based on the mapped second correction coefficient and the reflow control coefficient; An initial reflow duration is determined according to the benchmark reflow duration and the reflow process control coefficient.

4. The method according to claim 1, wherein The correcting the initial reflow duration according to the pre-reflow target standby duration to obtain a target reflow duration includes: The ratio of the target standby time before reflow to the reference standby time before reflow is used as a reflow time correction coefficient; The initial reflux time is corrected according to the reflux time correction coefficient to obtain a target reflux time.

5. The method according to claim 1, wherein The method further comprises: Obtaining a post-reflux benchmark standby time of the water purification equipment at the benchmark pure water flow rate; A target standby time after reflow is determined based on the reference standby time after reflow and the reflow control coefficient.

6. The method according to claim 5, characterized in that The determining of the target standby time after reflow based on the benchmark standby time after reflow and the reflow control coefficient includes: Obtaining a third mapping relationship between the pure water flow interval and the third correction coefficient; the third correction coefficient is used to determine the standby time for restarting the pure water reflux mode after stopping the pure water reflux mode; Based on the third mapping relationship, determining a third correction coefficient mapped to the target flow interval to which the measured pure water flow belongs; determining a post-reflow standby control coefficient based on the mapped third correction coefficient and the reflow control coefficient; A target standby time after reflow is determined according to the reference standby time after reflow and the standby control coefficient after reflow.

7. The method according to claim 1, characterized in that The method further comprises: When the water purification device finishes water production, determining a target standby time before reflux, a target reflux time, and a target standby time after reflux of the water purification device; If the standby time after the water purification equipment finishes water production reaches the determined target standby time before reflux, control the water purification equipment to operate in pure water reflux mode until the time for operating the pure water reflux mode reaches the determined target reflux time, and then control the water purification equipment to stop operating in the pure water reflux mode; If the standby time after the water purification device stops running the pure water reflux mode reaches the determined target standby time after reflux, the water purification device is controlled to run the pure water reflux mode.

8. A water purification device, characterized in that: The water purification equipment includes: A reverse osmosis membrane filter element, wherein the reverse osmosis membrane filter element is provided with a raw water inlet, a pure water outlet and a pure water return port; A pure water branch, the pure water branch being connected to the pure water outlet, and the pure water branch being provided with a flow detection device for detecting the flow of pure water produced by the reverse osmosis membrane filter element during the water production process; A pure water reflux branch, one end of which is connected to the pure water reflux port, and the other end of which is connected to the raw water inlet; A controller, wherein the controller controls the water purification equipment to operate in a pure water reflux mode by executing the water purification equipment control method described in any one of claims 1 to 7; during the process of the water purification equipment operating in the pure water reflux mode, the pure water reflux branch is connected, and the pure water produced by the reverse osmosis membrane filter element flows through the pure water reflux port, through the pure water reflux branch, and then flows into the raw water inlet.

9. A water purification equipment control device, characterized in that: The device comprises: A data acquisition module is used to obtain the measured pure water flow rate of pure water produced by the water purification equipment during the water production process, as well as the pre-reflux reference standby time and reference reflux time of the water purification equipment at a reference pure water flow rate; a reflux control coefficient determination module, configured to determine a reflux control coefficient according to a flow rate difference between the measured pure water flow rate and the reference pure water flow rate; a control duration determination module, configured to determine a target pre-reflux standby duration based on the pre-reflux benchmark standby duration and the reflux control coefficient, and to determine an initial reflux duration based on the benchmark reflux duration and the reflux control coefficient; the target pre-reflux standby duration is used to instruct the water purification equipment to operate in a pure water reflux mode after water production is completed; A control time correction module is used to correct the initial reflux time according to the target standby time before reflux to obtain a target reflux time; the target reflux time is used to instruct the water purification equipment to stop running the pure water reflux mode when the water purification equipment runs the pure water reflux mode.

10. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

12. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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