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

Abstract

The invention relates to a water purification equipment control method and device, computer equipment, a storage medium, a computer program product and water purification equipment. The method comprises the following steps: acquiring actually measured pure water flow of pure water produced by the water purification equipment in a water production process, and reference standby duration and reference backflow duration before backflow of the water purification equipment under reference pure water flow; determining a backflow control coefficient according to a flow difference value between the actually measured pure water flow and the reference pure water flow; determining a target standby time length before backflow based on the reference standby time length before backflow and the backflow control coefficient, and determining an initial backflow time length based on the reference backflow time length and the backflow control coefficient; and correcting the initial backflow duration according to the target standby duration before backflow to obtain the target backflow duration. By adopting the method, the operation parameters of the pure water backflow mode can be intelligently determined according to the actually measured pure water flow under the actual working condition, so that the operation effect of the pure water backflow mode is effectively improved.

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 development of water purification technology, reverse osmosis membranes designed based on reverse osmosis technology are usually used as filter elements for water purification equipment. During the static standby process after the water production of water purification equipment equipped with reverse osmosis membrane filter elements, the reverse osmosis membrane filter elements are in a state of being soaked in water. Since the water salt ion concentration on the pure water side of the reverse osmosis membrane filter element is lower than that on the raw water side / concentrated water side, under the action of osmotic pressure, the water salt ions on the raw water side / concentrated water side tend to penetrate to the pure water side. The longer the static time, the more water salt ions will penetrate. If water is produced again after a period of static standing, the water salt ion concentration of the first cup of water will be high and the desalination rate will be low.

[0003] In traditional technology, in order to improve the first cup of water, the water purification equipment is usually controlled to operate the pure water reflux mode after the water purification equipment has finished water production and has been on standby for a period of time, so that the pure water produced by the water purification equipment is refluxed to the raw water side and mixed with the raw water, reducing the water-salt ion concentration difference between the pure water side and the raw water side / concentrated water side when standing still, thereby reducing the diffusion rate of water-salt ions on both sides of the reverse osmosis membrane when standing still, and improving the first cup of water produced after standing still for a period of time. However, in traditional technology, the water purification equipment is usually controlled to operate the pure water reflux mode according to pre-set fixed parameters, and the operating parameters of the pure water reflux mode cannot be determined intelligently, resulting in the inability to effectively improve the operating effect of the pure water reflux 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 is unable to 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 reference standby time before reflux and the reference reflux time of the water purification equipment at the reference pure water flow rate;

[0007] Determine the reflux control coefficient according to 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, the pre-reflux target standby time is determined, and based on the benchmark reflux time and the reflux control coefficient, the initial reflux time is determined; 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;

[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 reference 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 reflux 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 benchmark 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, determine 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] The initial reflow time is determined 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 reference 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] Based on the post-reflow benchmark standby time and the reflow control coefficient, the post-reflow target standby time is determined.

[0026] In one embodiment, determining a target standby time after reflow based on a reference 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 running the pure water reflux mode again after stopping the pure water reflux mode;

[0028] 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;

[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 device 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 device;

[0033] If the standby time after the water purification equipment finishes water production reaches the determined target standby time before reflux, the water purification equipment is controlled to run the pure water reflux mode until the time for running the pure water reflux mode reaches the determined target reflux time, and the water purification equipment is controlled to stop running the pure water reflux mode;

[0034] If the standby time after the water purification device stops running in the pure water reflux mode reaches the determined target standby time after reflux, the water purification device 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 pre-reflux reference standby time and reference reflux time of the water purification equipment at the reference pure water flow rate;

[0037] A reflux control coefficient determination module, used to determine the reflux control coefficient according to the flow difference between the measured pure water flow and the reference pure water flow;

[0038] A control time determination module is used to determine the target standby time before reflux based on the reference standby time before reflux and the reflux control coefficient, and to determine the initial reflux time based on the reference reflux time and the reflux control coefficient; 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;

[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 runs 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, and the processor implements the following steps when executing the computer program:

[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 reference standby time before reflux and the reference reflux time of the water purification equipment at the reference pure water flow rate;

[0042] Determine the reflux control coefficient according to 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, the pre-reflux target standby time is determined, and based on the benchmark reflux time and the reflux control coefficient, the initial reflux time is determined; 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;

[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. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[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 reference standby time before reflux and the reference reflux time of the water purification equipment at the reference pure water flow rate;

[0047] Determine the reflux control coefficient according to 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, the pre-reflux target standby time is determined, and based on the benchmark reflux time and the reflux control coefficient, the initial reflux time is determined; 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;

[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, and when the computer program is executed by a processor, the following steps are implemented:

[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 reference standby time before reflux and the reference reflux time of the water purification equipment at the reference pure water flow rate;

[0052] Determine the reflux control coefficient according to 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, the pre-reflux target standby time is determined, and based on the benchmark reflux time and the reflux control coefficient, the initial reflux time is determined; 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;

[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 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 according to 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 according to 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 according to the flow difference between the measured pure water flow rate and the reference pure water flow rate, so as to determine the pre-reflux target standby time based on the pre-reflux reference standby time and the reflux control coefficient, and determine 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 according to the target standby time before reflux to obtain the target reflux time, wherein the target reflux time is used to indicate to stop the operation of the pure water reflux mode when the water purification equipment is operating in the pure water reflux mode. During the whole process, the target standby time before reflux and the target reflux time for controlling the operation of the pure water reflux mode are determined according to the measured pure water flow rate, rather than 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.

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

[0057] 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, the pure water branch is connected to the pure water outlet, and a flow detection device is provided on the pure water branch, and the flow detection device is used to detect 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 in the water production process through the flow detection device set on the pure water branch, and then determine the target standby time before reflux and the target reflux time for controlling the pure water reflux mode according to the measured pure water flow rate under actual working conditions, so as to control the water purification equipment to operate the pure water reflux mode, rather than controlling the water purification equipment to operate 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 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] FIG1 is an application environment diagram of a water purification equipment control method according to an embodiment;

[0063] FIG2 is a schematic flow chart of a method for controlling a water purification device in one embodiment;

[0064] 3 is a schematic diagram of 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] 4 is a schematic diagram of a process for determining a target standby time before reflow based on a reference standby time before reflow and a reflow control coefficient in one embodiment;

[0066] FIG5 is a schematic diagram of a process for determining an initial reflow duration based on a reference reflow duration and a reflow control coefficient in one embodiment;

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

[0068] FIG7 is a schematic flow chart of a method for controlling a water purification device in another embodiment;

[0069] 8 is a schematic diagram of a process for determining a target standby time after reflow based on a reference standby time after reflow and a reflow control coefficient in one embodiment;

[0070] FIG9 is a schematic diagram of a process for 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] FIG10 is a schematic diagram of a process for controlling a water purification device to operate in a pure water reflux mode in one embodiment;

[0072] FIG11 is a schematic diagram of the structure of a water purification device in one embodiment;

[0073] FIG12 is a schematic structural diagram of a water purification device in another embodiment;

[0074] FIG13 is a block diagram of a water purification equipment control device in one embodiment;

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

[0076] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0077] The water purification device control method provided in the embodiment of the present application can be applied in the application environment shown in FIG1. ​​Specifically, the controller 102 in the water purification device 100 can communicate with the terminal 200 through the network, and in response to the water production mode start instruction triggered by the user using the terminal 200, control the water purification device 100 to run the water production mode. The water purification device 100 is also provided with a flow detection device 104 to detect the flow of pure water produced by the water purification device 100. The flow detection device 104 is connected to the controller 102, and the detection result can be fed back to the controller 102 in real time. 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, so as to determine the reflux control coefficient according to the flow difference between the measured pure water flow rate and the reference pure water flow rate, and then determine the target standby time before reflux based on the reference standby time before reflux and the reflux control coefficient, and determine 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 indicate that the water purification equipment 100 runs 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 indicate that the water purification equipment 100 stops running the pure water reflux mode when the water purification equipment 100 runs the pure water reflux mode.

[0078] Among them, the water purification device 100 is a device for removing impurities and harmful substances in water and improving water quality to meet specific purposes (such as drinking). The controller 102 is the core component of the water purification device 100, which can control the water purification device 100 to run different modes. Its working principle is: receiving input signals, such as water production mode start instructions, and issuing control instructions after internal logic processing, so as to realize automatic control of the device or system. It should be noted that the water production mode start instruction can also be triggered by the user directly clicking the touch screen / button on the water purification device 100. A reverse osmosis membrane filter element can be provided in the water purification device 100, and the raw water is filtered through the reverse osmosis membrane filter element to produce pure water, and then the concentrated water after filtration and concentration is discharged. The reverse osmosis membrane in the reverse osmosis membrane filter element is an artificial semipermeable membrane made by simulating a biological semipermeable membrane, so that the reverse osmosis membrane filter element can effectively filter dissolved salts, colloids, microorganisms, etc. in the water. The flow detection device 104 can be disposed at the pure water outlet of the reverse osmosis membrane filter element of the water purification device 100 to detect the flow of pure water produced by the water purification device 100 during the water production process. The flow detection device 104 can be a flow meter. The terminal device 200 can be, but is not limited to, various personal computers, laptops, smart phones, tablet computers, Internet of Things devices, etc.

[0079] In one embodiment, as shown in FIG. 2 , a water purification equipment control method is provided, which is described by taking the method applied to the controller in FIG. 1 as an example, and includes the following steps:

[0080] Step 202, 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.

[0081] Among them, the benchmark standby time before reflux and the benchmark reflux time are data determined in advance through multiple rounds of tests, 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 a good state. The good state of the reverse osmosis membrane filter element means that the reverse osmosis membrane in the reverse osmosis membrane filter element is low in pollution and 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 makes the first cup of water 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 makes the first cup of water meet the standard requirements.

[0082] Optionally, the controller can obtain the pure water flow detection data of the water purification equipment during the entire water production process through the flow detection device, and obtain the average pure water flow, and then use the average pure water flow as the measured pure water flow of the pure water produced by the water purification equipment during the water production process. Furthermore, the controller can obtain the pre-reflux reference standby time and reference reflux time of the water purification equipment at the reference pure water flow from the 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 the 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 measured pure water flow of the water purification equipment after a certain water production is completed as V1, the reflux control coefficient = (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 benchmark standby time before reflux and the reflux control coefficient, determine the target standby time before reflux, and based on the benchmark 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] Exemplarily, how to control the water purification equipment to operate the pure water reflux mode according to the target standby time before reflux is as follows: if the measured pure water flow rate is determined during a water production process, and the target standby time before reflux is determined based on the measured 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 the 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 to stop the pure water reflux mode when the water purification equipment is running in 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] Exemplarily, 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 in 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 the reflux is waited for 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 step 202 to step 208, as shown in FIG3, 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 process:

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

[0095] Step 304, 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;

[0096] If the water purification device 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 according to the flow difference between the measured pure water flow and the reference pure water flow;

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

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

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

[0101] The above-mentioned water purification equipment control method first obtains the measured pure water flow rate of 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 according to 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 according to 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 according to 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 according to the target standby time before reflux to obtain the target reflux time, wherein the target reflux time is used to indicate to stop the operation of the pure water reflux mode when the water purification equipment is operating in the pure water reflux mode. During the whole process, the target standby time before reflux and the target reflux time for controlling the operation of the pure water reflux mode are determined according to the measured pure water flow rate, rather than 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.

[0102] Regarding how to determine the target standby time before reflow based on the pre-reflow reference standby time and the reflow control coefficient, in a possible implementation, based on FIG. 3 , as shown in FIG. 4 , step 310 further includes steps 402 to 408, wherein:

[0103] Step 402, 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.

[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, [first pure water flow, +∞) is used 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, the state of the reverse osmosis membrane filter element is better. [Second pure water flow, first pure water flow) is used 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, the state of the reverse osmosis membrane filter element is generally characterized. After the reverse osmosis membrane filter element has been used for a period of time, the reverse osmosis membrane filter element is contaminated, and the flow rate of pure water produced by it will usually drop to the second pure water flow interval. Let (0, the second pure water flow rate) be 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 state 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 has deepened 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 type of water purification equipment, after dividing the pure water flow interval, the tester can pre-carry out multiple rounds of tests on the reverse osmosis membrane filter element of the model in different states to determine the first mapping relationship between the pure water flow interval of the water purification equipment of this model and the first correction coefficient, and store the first mapping relationship in the controller of the water purification equipment of this model. Based on this, the controller can obtain the first mapping relationship between the pure water flow interval of the water purification equipment and the first correction coefficient from the stored data. Among them, the multiple rounds of testing can be specifically: when the flow rate of pure water produced by the water purification equipment is within a certain pure water flow interval, what values ​​the first correction coefficient, the second correction coefficient, and the third correction coefficient take, so that the first cup of water meets the standard requirements after the pure water reflux mode is operated according to the calculated standby time before reflux, reflux time (single operation time of reflux mode), and standby time after reflux. The process of multiple rounds of testing can be used not only to determine the first mapping relationship, but also to determine the second mapping relationship and the third mapping relationship.

[0106] Step 404, determining the target flow interval to which the measured pure water flow belongs, and determining the 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 : determining 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, taking the pre-reflux standby control coefficient as 1-k·(V1-V0) / V0 and the pre-reflux reference standby time as 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 state of the reverse osmosis membrane filter element (the better the filtration effect), the greater the concentration difference between the raw water side and the pure water side, and the faster the water salt ion penetration rate under a larger concentration difference. The pure water reflux mode needs to be run as soon as possible when standing still. 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 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 reference reflow duration and the reflow control coefficient, in one embodiment, based on FIG. 3 , as shown in FIG. 5 , step 312 further 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 when the pure water reflux mode is run once.

[0117] Exemplarily, for each model of water purification equipment, the tester can pre-construct the first pure water flow interval [first pure water flow, +∞), the second pure water flow interval [second pure water flow, first pure water flow) and the third pure water flow interval (0, second pure water flow). After dividing the pure water flow intervals, the tester can pre-carry out multiple rounds of tests on the reverse osmosis membrane filter element in different states under this model to determine the second mapping relationship between the pure water flow interval and the second correction coefficient of this model of water purification equipment, and store the second mapping relationship in the controller of this model of water purification equipment. 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 the 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 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 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, determining a reflow process control coefficient based on the mapped second correction coefficient and the reflow control coefficient.

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

[0122] For example, the measured pure water reflux volume of the water purification equipment in 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] Exemplarily, taking the reflux process control coefficient as 1+g·(V1-V0) / V0 and the reference 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, the greater the concentration difference between the raw water side and the pure water side, and 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 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, based on FIG. 3 , as shown in FIG. 6 , step 314 further 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 pre-reflow target standby time to the pre-reflow reference standby time as the reflow time correction coefficient. For example, taking the pre-reflow target standby time as T1 and the pre-reflow reference standby time as 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 a target reflow time.

[0132] Exemplarily, 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 T2=T2'·(T1 / A0)={B0·[1+g·(V1-V0) / V0]}·(T1 / A0). In the process of standby, the reverse osmosis membrane filter element in the water purification equipment is in a state of being soaked in water. 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 raw water / concentrated water penetrate into pure water through the reverse osmosis membrane, and the longer the time required to run the pure water reflux mode. Therefore, the target reflux time T2 is 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 practical applications, 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 is controlled to run the pure water reflux mode again. Based on this, in one embodiment, based on FIG2, as shown in FIG7, the water purification equipment control method also includes:

[0135] Step 702, obtaining 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 tests, 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 pure water reflux mode of the water purification equipment after water production is controlled to be the benchmark standby time before reflux, the running time when running the pure water reflux mode is the benchmark reflux time, and the standby time of 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 (desalination rate> 80%). That is, 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 so that the first cup of water meets the standard requirements.

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

[0138] Step 704 : determining a target standby time after reflow based on the reference 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] Exemplarily, how to control the water purification equipment to run the pure water reflux mode according to the target standby time after reflux is as follows: if the measured pure water flow rate is determined during a certain water production process, and the target standby time after reflux is determined based on the measured 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 run the pure water reflux mode again.

[0141] In this embodiment, the target standby time after reflux can be intelligently determined based on the 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, based on FIG. 7 , as shown in FIG. 8 , step 704 further 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] Exemplarily, for each model of water purification equipment, the tester can pre-construct the first pure water flow interval [first pure water flow, +∞), the second pure water flow interval [second pure water flow, first pure water flow) and the third pure water flow interval (0, second pure water flow). After dividing the pure water flow intervals, the tester can pre-carry out multiple rounds of tests on the reverse osmosis membrane filter element in different states under this model to determine the third mapping relationship between the pure water flow interval of this model of water purification equipment and the third correction coefficient, and store the third mapping relationship in the controller of this model of water purification equipment. 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 the 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 belongs, and then determine the third correction coefficient mapped to the target flow interval by querying the third 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 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 , determining 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, and 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] Exemplarily, taking the standby control coefficient after reflux as 1-h·(V1-V0) / V0 and the benchmark standby time after reflux as C0 as an example, the target standby time after reflux T3=C0·[1-h·(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, the larger the concentration difference between the raw water side and the pure water side, and under a larger concentration difference, the water salt ion penetration rate will be faster. The pure water reflux mode needs to be run as soon as possible when standing still. Therefore, the target standby time after reflux T3 is inversely proportional to the measured pure water flow rate V1. The larger the measured pure water flow rate V1, the shorter the target standby time after reflux T3.

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

[0154] Based on the above embodiments, as shown in FIG9 , 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, 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, 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 device 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 according to the flow difference between the measured pure water flow and the reference pure water flow;

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

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

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

[0162] Step 916, taking the ratio of the target standby time before reflow and the reference standby time before reflow as the reflow time correction coefficient;

[0163] Step 918, correcting the initial reflow duration according to the reflow duration correction coefficient to obtain a target reflow duration;

[0164] Step 920, based on the target standby time before reflux, the target reflux time and the target standby time after reflux, control the water purification equipment to operate in the pure water reflux mode.

[0165] In one embodiment, as shown in FIG10 , a flow chart of controlling a water purification device to operate in a pure water reflux mode 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 water production, execute step 1006 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, return 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 the 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 duration, 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 according to 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 involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0174] The embodiment of the present application further provides a water purification device 1100 for implementing the water purification device control method involved above. As shown in FIG11 , a schematic diagram of the structure of the 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] A pure water branch 1102, the 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 run the pure water reflux mode by executing the above-mentioned water purification equipment control method; when the water purification equipment 1100 runs the 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 in the water production process through the flow detection device set on the pure water branch, and then determine the target standby time before reflux and the target reflux time for controlling the pure water reflux mode according to the measured pure water flow rate under actual working conditions, so as to control the water purification equipment to operate the pure water reflux mode, rather than controlling the water purification equipment to operate 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 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.

[0180] Exemplarily, as shown in FIG. 12, another structural schematic diagram of the water purification device 1100 is provided, wherein a raw water branch 1105 may be provided in the water purification device 1100 to access 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 reflux branch 1104 of the water purification device 1100. During the process of the water purification device 1100 running the pure water reflux mode, the controller may control the first water inlet solenoid valve 1107 to be turned on, so that the pure water reflux branch 1104 is turned on, and the pure water produced by the reverse osmosis membrane filter element 1101 may flow through the pure water reflux port through the pure water reflux branch 1104, and then flow into the raw water inlet. The check valve 1108 can ensure the unidirectional conduction of the pure water return branch 1104, so that when the pure water return mode is running, the pure water produced by the reverse osmosis membrane filter element 1101 can flow from the pure water return port into the pure water return branch 1104, pass through the first water inlet solenoid valve 1107, the check valve 1108, the pressure regulating pump 1106, and flow into the raw water inlet of the reverse osmosis membrane filter element 1101 after mixing with the raw water. Furthermore, a concentrated water branch 1109 can be provided in the water purification device 1100 to discharge the concentrated raw water, and a second water inlet solenoid valve 1110 can be provided on the concentrated water branch 1109 to control the conduction of the concentrated water branch 1109.

[0181] Based on the same inventive concept, the embodiment of the present application also provides a water purification equipment control device for implementing the water purification equipment control method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more water purification equipment control device embodiments provided below can refer to the limitations of the water purification equipment control method above, and will not be repeated here.

[0182] In one embodiment, as shown in FIG. 13 , a water purification equipment control device is provided, including: a data acquisition module 1302, a reflux control coefficient determination module 1304, a control duration determination module 1306 and a control duration 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 pre-reflux reference standby time and reference reflux time of the water purification equipment at the reference pure water flow rate;

[0184] A reflux control coefficient determination module, used to determine the reflux control coefficient according to the flow difference between the measured pure water flow and the reference pure water flow;

[0185] A control time determination module is used to determine the target standby time before reflux based on the reference standby time before reflux and the reflux control coefficient, and to determine the initial reflux time based on the reference reflux time and the reflux control coefficient; 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;

[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 runs the pure water reflux mode.

[0187] The above-mentioned water purification equipment control device first obtains the measured pure water flow rate of 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 according to 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 according to the state of the reverse osmosis membrane filter element under actual working conditions. Further, the reference standby time before reflux 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 according to the flow difference between the measured pure water flow rate and the reference pure water flow rate, so as to determine the target standby time before reflux based on the reference standby time before reflux and the reflux control coefficient, and determine 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 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 according to the target standby time before reflux to obtain the target reflux time, wherein the target reflux time is used to indicate to stop the operation of the pure water reflux mode when the water purification equipment is operating in the pure water reflux mode. During the whole process, the target standby time before reflux and the target reflux time for controlling the operation of the pure water reflux mode are determined according to the measured pure water flow rate, rather than 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.

[0188] In one of the embodiments, 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 based on the pre-reflux benchmark standby time and the pre-reflux standby control coefficient.

[0189] In one of the embodiments, 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 actual 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 of the embodiments, the control time correction module is also 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 of the embodiments, the control time determination module is also used to: obtain a reference standby time after reflux of the water purification equipment at a reference pure water flow rate; and determine a target standby time after reflux based on the reference standby time after reflux and the reflux control coefficient.

[0192] In one of the embodiments, 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 of the embodiments, 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 a 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 by software, hardware and a combination thereof. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0195] In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be shown in FIG14. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, 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 the 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 the 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 the structure shown in FIG. 14 is merely a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme 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 arrangement of components.

[0197] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above-mentioned 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 relevant laws, regulations and standards of relevant countries and regions.

[0201] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0202] The technical features of the above embodiments may 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 only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached 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 reference standby time and the reflux control coefficient, a pre-reflux target standby time is determined, and based on the reference 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 run 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: Acquire 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 reflux mode after the 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; The 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 reference reflow duration and the reflow control coefficient includes: Acquire 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 reference reflow duration and the reflow process control coefficient.

4. The method according to claim 1, characterized in that: 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 reflow duration is corrected according to the reflow duration correction coefficient to obtain a target reflow duration.

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

6. The method according to claim 5, characterized in that The determining of the target standby time after reflow based on the reference standby time after reflow and the reflow control coefficient includes: Acquire 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, 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 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 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 reflux outlet; A pure water branch, the pure water branch is connected to the pure water outlet, a flow detection device is provided on the pure water branch, and the flow detection device is used to detect 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 turned on, 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, used to acquire 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; A reflux control coefficient determination module, used to determine the reflux control coefficient according to the flow difference between the measured pure water flow and the reference pure water flow; A control duration determination module, used to determine a target standby time before reflux based on the reference standby time before reflux and the reflux control coefficient, and to determine an initial reflux time based on the reference reflux time and the reflux control coefficient; the target standby time before reflux is used to instruct the water purification equipment to run 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, characterized in that: 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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