A control method of a water purification system with cleaning and disinfecting functions

Abstract

The embodiment of the present application discloses a control method of a water purification system with cleaning and disinfecting functions, which determines the working procedure of the water purification system; the working procedure includes pure water preparation and cleaning and disinfecting; when the pure water is prepared, the waterway pipeline of the water supply module and the water preparation module is connected, and the wastewater discharge pipeline of the sewage module and the water preparation module is connected; the water preparation module is controlled to prepare pure water; when the cleaning and disinfecting is performed, the cleaning and disinfecting module is controlled to prepare an oxidizing solution; the waterway pipeline of the cleaning and disinfecting module and the water preparation module is connected, and the wastewater discharge pipeline of the sewage module and the water preparation module is connected; the oxidizing solution is controlled to clean the waterway pipeline of the water preparation module and the wastewater discharge unit discharges the used oxidizing solution. The water purification system can improve the problem of odor caused by bacteria breeding during use and storage, remove the pollutants such as scale and biological membrane formed on the surface of the RO membrane filter element, and thus prolong the service life of the water purification system.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of drinking water, in particular to a control method of a water purification system with cleaning and disinfecting functions. BACKGROUND

[0002] At present, the water purification system is usually installed at the end of the raw water purification process, used for intercepting the pollutants in the water on the surface of the filter core to purify the raw water, but bacteria and scale will breed on the membrane surface after a long time of filtration to a certain accumulation, the former will produce odor and form a biological membrane on the membrane surface to hinder the filtration of water, and the latter will block the membrane holes, if the pollution of the membrane is left without any cleaning, the filtered water flow will become small or no water will be discharged, and the discharged water will have odor and other phenomena. SUMMARY

[0003] Therefore, the control method of the water purification system with cleaning and disinfecting functions can improve the problem of odor of the discharged water caused by breeding of bacteria during use and storage of the water purification system, and can remove the pollutants such as scale and biological membrane formed on the surface of the RO membrane filter core, thereby prolonging the service life of the water purification system.

[0004] The embodiment of the present application provides a control method of a water purification system with cleaning and disinfecting functions, the water purification system comprising a temperature control module and a heating module; the water purification system comprising a control module, a water supply module, a water production module and a cleaning and disinfecting module; the water purification system comprising a control module, a water production module and a cleaning and disinfecting module; the control module is electrically connected with the water production module and the cleaning and disinfecting module respectively, and the control method comprises the following steps:

[0005] obtaining a cleaning and disinfecting instruction of the water purification system;

[0006] detecting a disinfecting water amount of the cleaning and disinfecting module according to the cleaning and disinfecting instruction;

[0007] when the disinfecting water amount meets a cleaning and disinfecting condition, starting the cleaning and disinfecting module to clean and disinfect a water path of the water production module.

[0008] Optionally, the water purification system further comprises a water supply module and a sewage discharge module, the control module is further electrically connected with the water supply module and the sewage discharge module; before starting the cleaning and disinfecting module to clean and disinfect the water path of the water production module, the control method further comprises the following steps:

[0009] controlling the cleaning and disinfecting module to prepare an oxidizing solution;

[0010] controlling the water path pipeline of the cleaning and disinfecting module and the water production module to be communicated, and the waste water discharge pipeline of the sewage discharge module and the water production module to be communicated;

[0011] controlling the cleaning and disinfecting module to clean and disinfect water channels of the water making module, including:

[0012] controlling the oxidizing solution to clean water channel pipes of the water making module and to discharge the oxidizing solution after use by the waste water discharge unit.

[0013] Optionally, the cleaning and disinfecting module includes a water storage tank, an oxidizing reagent adding device and an electrolysis generating device; before controlling the cleaning and disinfecting module to prepare the oxidizing solution, the control method further includes:

[0014] judging whether the solution in the water storage tank is an electrolytic solution for preparing the oxidizing solution:

[0015] if yes, controlling the cleaning and disinfecting module to prepare the oxidizing solution, including:

[0016] controlling the electrolysis generating device to electrolyze the electrolytic solution in the water storage tank to prepare the oxidizing solution;

[0017] if no, controlling the water supply module to supply water to the water storage tank and controlling the oxidizing reagent adding device to add oxidizing reagents to the water storage tank to prepare the electrolytic solution for the oxidizing solution.

[0018] Optionally, during the process of controlling the cleaning and disinfecting module to prepare the oxidizing solution, the control method further includes:

[0019] acquiring a gas concentration value of a preset gas in the water storage tank;

[0020] judging whether the gas concentration value of the preset gas reaches a calibrated gas concentration value, if yes, controlling the cleaning and disinfecting module to stop electrolysis to obtain the oxidizing solution.

[0021] Optionally, the oxidizing reagent adding device includes oxidizing reagents and stabilizers, and the stabilizers and the oxidizing reagents are made of the same material;

[0022] after the oxidizing solution is prepared, the control method further includes:

[0023] controlling the oxidizing reagent adding device to add stabilizers to the water storage tank.

[0024] Optionally, before controlling the oxidizing solution to clean water channel pipes of the water making module and to discharge the oxidizing solution after use by the waste water discharge unit, the control method further includes:

[0025] acquiring a water level value of the water storage tank and a gas concentration value of the preset gas at the current time;

[0026] determining whether the current water level value reaches a first calibration water level and determining whether the current gas concentration value of the preset gas is greater than the calibration gas concentration value;

[0027] If both are yes, control the oxidizing solution to clean the water channel pipeline of the water production module and discharge the used oxidizing solution of the sewage module;

[0028] If both are no, continue to prepare the oxidizing solution.

[0029] Optionally, the water storage tank comprises a first calibration water level and a second calibration water level; wherein the first calibration water level is higher than the first calibration water level.

[0030] In the process of controlling the oxidizing solution to clean the water channel pipeline of the water production module and discharge the used oxidizing solution of the sewage module, the control method further comprises:

[0031] Real-time acquisition of the water level value of the water storage tank;

[0032] Determine whether the current water level value is lower than the second calibration water level;

[0033] If yes, control the cleaning and disinfecting module to be disconnected with the water channel pipeline of the water production module;

[0034] If no, continue to control the cleaning and disinfecting module to be connected with the water channel pipeline of the water production module.

[0035] Optionally, the cleaning and disinfecting module further comprises an air exhaust unit; the air exhaust port of the air unit extends into the water tank;

[0036] When the electrolysis of the cleaning and disinfecting module is turned on, control the air exhaust unit to be opened for discharging the gas in the water storage tank; when the electrolysis of the cleaning and disinfecting module is turned off, control the air exhaust unit to be closed.

[0037] Optionally, the water production module comprises a water outlet unit, and the water outlet unit comprises a water production key; the working procedure of the water purification system is determined, comprising:

[0038] Acquire the pure water preparation instruction of the water production key;

[0039] According to the pure water preparation instruction, the working procedure of the water purification system is started as pure water preparation.

[0040] Optionally, the water outlet unit further comprises a cleaning and disinfecting key, and the working procedure of the water purification system is determined, comprising:

[0041] Acquire the cleaning and disinfecting instruction of the cleaning and disinfecting key;

[0042] According to the cleaning and disinfecting instruction, the working procedure of the water purification system is started as cleaning and disinfecting.

[0043] Optionally, the water production module further comprises a pure water filtering unit; the pure water filtering unit is arranged in the water channel pipeline of the water production module;

[0044] In the pure water production process, the control method further comprises:

[0045] obtaining the pure water flow rate flowing through the pure water outlet of the pure water filtering unit;

[0046] calculating the reduction amount of the current pure water flow rate relative to the nominal flow rate;

[0047] when the reduction amount is greater than or equal to a preset reduction amount, controlling the working procedure of the water purification system to be switched from pure water production to cleaning and disinfection.

[0048] In summary, the control method of the water purification system provided by the embodiment of the present application, the pure water production water channel pipeline and the cleaning and disinfection water channel pipeline of the water purification system are independent of each other and do not interfere with each other. When the water purification system is controlled to be cleaned and disinfected, the high-oxidizing solution prepared by the machine itself can be used to clean and disinfect the water channel pipeline and the surface of the filter element in the corresponding pipeline of the water purification system, thereby improving the problem of odor caused by bacteria breeding during the use and storage of the water purification system. At the same time, the pollutants such as scale and biofilm formed on the surface of the filter element can be removed, thereby prolonging the service life of the water purification system and improving the quality of pure water purification. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 a schematic diagram of a water purification system with cleaning and disinfection function provided by the present application;

[0050] Figure 2 a control method of a water purification system with cleaning and disinfection function provided by the present application; Figure 1

[0051] a water channel pipeline connection diagram of a water purification system in pure water production provided by the present application; Figure 3 Figure 1 a water channel pipeline connection diagram of a water purification system in cleaning and disinfection provided by the present application;

[0052] Figure 4 a control method of another water purification system with cleaning and disinfection function provided by the present application; Figure 1

[0053] a schematic diagram of the electrical control of another water purification system with cleaning and disinfection function provided by the present application; Figure 5 Figure 1 a control method of another water purification system with cleaning and disinfection function provided by the present application;

[0054] Figure 6 a schematic diagram of the electrical control of another water purification system with cleaning and disinfection function provided by the present application; Figure 1

[0055] ​​​Figure 7 for Figure 1 A schematic diagram of a control method for another water purification system with cleaning and disinfection functions;

[0056] Figure 8 for Figure 1 A schematic diagram of a control method for another water purification system with cleaning and disinfection functions;

[0057] Figure 9 for Figure 1 Schematic diagram of another control method for a water purification system with cleaning and disinfection functions. DETAILED DESCRIPTION

[0058] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0059] Example

[0060] Figure 1 This is a schematic diagram of a water purification system with cleaning and disinfection functions provided by the present invention. Figure 1 As shown, an embodiment of the present application provides a water purification system with cleaning and disinfection functions, which includes a control module 10, a water supply module 20, a water production module 30, a cleaning and disinfection module 40 and a sewage discharge module 50; the control module 10 is electrically connected to the water supply module 20, the water production module 30, the cleaning and disinfection module 40 and the sewage discharge module 50 respectively.

[0061] Specifically, the control module 10 is a control device for the water purification system. The control device may be composed of software and / or hardware, and the control device may be integrated into the main controller of the water purification system. The water supply module 20 may be connected to a tap water source to provide a purified water source; the water pipeline of the water production module 30 includes at least a filter element for filtering the water source to produce pure water; the cleaning and disinfection module 40 is used to prepare the water source into an oxidizing solution for cleaning and disinfection and to store the oxidizing solution. Exemplarily, the oxidizing solution may be a sodium hypochlorite solution, which is used to clean and disinfect the water pipeline of the water production module 30; the sewage discharge module 50 then discharges the wastewater prepared from the pure water and the oxidizing solution after cleaning and disinfection from the water purification system. The sewage discharge module provided in the embodiment of the present application can meet the requirements of pure water preparation in the water purification system and cleaning and disinfection of the pure water preparation water pipeline.

[0062] Based on the same inventive concept, the embodiment of the present application also provides a control method for a water purification system with a cleaning and disinfection function, for controlling Figure 1The water purification system with the cleaning and disinfecting function is shown to realize pure water preparation and cleaning and disinfection of water preparation pipelines. Figure 2 is a control method of the water purification device with the cleaning and disinfecting function provided in the embodiment of the application, referring to Figure 1 and Figure 2 The control method of the water purification device with the cleaning and disinfecting function provided in the embodiment of the application includes:

[0063] S001, obtaining a cleaning and disinfecting instruction of a cleaning and disinfecting key.

[0064] S002, detecting a disinfecting water amount of the cleaning and disinfecting module according to the cleaning and disinfecting instruction.

[0065] Specifically, the control module 10 obtains the cleaning and disinfecting instruction transmitted by the user or the system, calls the cleaning and disinfecting program stored in the control module 10, starts the cleaning and disinfecting program, and first detects the disinfecting water amount stored in the cleaning and disinfecting module 40 to determine whether the disinfecting water amount reaches the water amount for completely flushing the water pipeline of the water preparation module 30. If the cleaning water amount is reached, the cleaning and disinfecting is started, and if the cleaning water amount is not reached, the cleaning and disinfecting cannot be started.

[0066] S003, when the disinfecting water amount meets the cleaning and disinfecting condition, starting the cleaning and disinfecting module to clean and disinfect the water pipeline of the water preparation module.

[0067] Specifically, when the disinfecting water amount stored in the system cleaning and disinfecting module 40 reaches the cleaning water amount, the disinfecting solution stored in the cleaning and disinfecting module 40 is used to flush the water pipeline of the water preparation module to achieve the purpose of cleaning and disinfecting.

[0068] The disinfecting and cleaning module is introduced on the water purification machine in the application, and the disinfecting solution prepared by the machine itself can be used to disinfect and clean the pipeline and filter core surface of the water preparation module in the corresponding pipeline of the water purification machine through the electric control, so that the use cycle of the water purification machine can be improved.

[0069] The following examples are described to illustrate how to control the water purification system to prepare pure water and clean and disinfect. Figure 3 For Figure 1 the water pipeline connection schematic diagram of the water purification system in the preparation of pure water; Figure 4 For Figure 1 the water pipeline connection schematic diagram of the water purification system in the cleaning and disinfecting; Figure 5 For Figure 1 the control method schematic diagram of another water purification system with the cleaning and disinfecting function in the embodiment of the application.

[0070] Combined with Figures 1-4As shown, after the water purification system is started, the main control module 10 first determines the working procedure of the water purification system at the current time. The working procedure of the water purification system provided in the embodiment of the application at least includes a pure water preparation procedure and a cleaning and disinfecting procedure. The pure water preparation procedure refers to discharging pure water from the pure water outlet of the water purification system after filtering the tap water source provided by the water supply module 20 to generate pure water. The cleaning and disinfecting procedure refers to preparing an oxidizing solution by using the tap water source provided by the water supply module 20, and cleaning and disinfecting the waterway pipeline of the water preparation module 30 by using the oxidizing solution.

[0071] Reference Figure 5 As shown, the control method of another water purification device with a cleaning and disinfecting function provided in the embodiment of the application includes:

[0072] S101, obtaining a pure water preparation instruction of the water purification system.

[0073] S102, according to the pure water preparation instruction, controlling the waterway pipeline of the water supply module and the waterway pipeline of the water preparation module to be communicated, and controlling the waste water discharge pipeline of the water preparation module and the waste water discharge pipeline of the water preparation module to be communicated.

[0074] S103, controlling the water preparation module to prepare pure water.

[0075] When the pure water preparation instruction of the water purification system is obtained, the water purification system starts the pure water preparation procedure.

[0076] Specifically, referring to Figure 3 As shown, when the water purification system is connected to power and started, the main control module 10 determines that the working procedure of the water purification system at the current time is pure water preparation, the main control module 10 controls the waterway pipeline of the water supply module 10 and the waterway pipeline of the water preparation module 30 to be communicated to form a water inlet passage, the main control module 10 controls the first water outlet of the water preparation module 30 and the waterway pipeline of the waste water discharge module 50 to be communicated to form a waste water discharge passage, the main control module 10 controls the water supply module 10 to provide the tap water source W1 to the water preparation module 30, the filter cartridge in the water preparation module 30 filters the tap water source, and the filtered pure water W2 is discharged from the second water outlet for users to drink, and the waste water W3 concentrated after passing through the filter cartridge is discharged through the waste water discharge module 50.

[0077] S104, obtaining a cleaning and disinfecting instruction of the cleaning and disinfecting key.

[0078] S105, according to the cleaning and disinfecting instruction, detecting the disinfecting water amount of the cleaning and disinfecting module.

[0079] Further, referring to Figure 4As shown, when the water purification system is connected to electricity and starts to work, the main control module 10 obtains the cleaning and disinfecting instruction of the water purification system, starts the cleaning and disinfecting program of the water purification system, detects the disinfecting water amount stored in the cleaning and disinfecting module 40, judges whether the disinfecting water amount reaches the water amount for completely flushing the water channel pipeline of the water preparation module 30, and if so, starts the cleaning and disinfecting.

[0080] S106, control the cleaning and disinfecting module to prepare the oxidizing solution.

[0081] Specifically, the main control module 10 controls the water outlet of the water supply module 20 and the water inlet of the cleaning and disinfecting module 40 to be communicated, forming a water inlet passage; the main control module 10 controls the water supply module 20 to provide the tap water source W1 to the cleaning and disinfecting module 40, and when the water inlet is completed, the main control module 10 controls the cleaning and disinfecting module 40 to prepare the tap water source W1 into the oxidizing solution for cleaning and disinfecting, and stores the oxidizing solution W4 at the same time.

[0082] S107, control the water channel pipeline of the cleaning and disinfecting module and the water preparation module to be communicated, and control the waste water discharge pipeline of the cleaning and disinfecting module and the water preparation module to be communicated.

[0083] Specifically, when the oxidizing solution is prepared, the water outlet of the cleaning and disinfecting module 40 is communicated with the water inlet of the water preparation module 30, and the water inlet of the waste discharge module 50 is communicated with the water outlet of the water preparation module 30, forming the cleaning and disinfecting water channel pipeline.

[0084] S108, control the oxidizing solution to clean the water channel pipeline of the water preparation module and discharge the used oxidizing solution of the waste discharge module.

[0085] Specifically, referring to Figure 4 As shown, when the cleaning and disinfecting program is started, the main control module 10 controls the oxidizing solution W4 to flow through the water channel pipeline of the water preparation module 30, uses the high oxidizing solution W4 to sterilize and disinfect the bacteria in the water channel pipeline, removes the peculiar smell of the pipeline, and removes the pollutants such as the scale and the formed biofilm on the surface of the filter element of the water preparation module 30, and then controls the waste discharge module 50 to discharge the used oxidizing solution W4' of the cleaning to the water channel pipeline of the water preparation module 30, so as to finally improve the use cycle of the water purification system and the purification quality of the pure water.

[0086] In summary, the control method of the water purification system provided by the embodiment of the present application is characterized in that the water channel pipeline for preparing the pure water and the water channel pipeline for cleaning and disinfecting of the water purification system are independent and do not interfere with each other, when cleaning and disinfecting, the high oxidizing solution prepared by the machine itself can be used to clean and disinfect the water channel pipeline and the surface of the filter element in the corresponding pipeline of the water purification system through the electric control, the problem of peculiar smell of the outlet water caused by the bacteria breeding during the use and storage of the water purification system is improved, and the pollutants such as the scale and the formed biofilm on the surface of the filter element can be removed, so as to improve the use cycle of the water purification system and the purification quality of the pure water.

[0087] Figure 6 for Figure 1 Another electrical control schematic diagram of a water purification system with cleaning and disinfection functions; Figure 7 for Figure 1 Schematic diagram of another control method of a water purification system with cleaning and disinfection functions. Figure 6 As shown, the water production module 30 includes a water outlet unit 31, and the water outlet unit 31 includes a water production key 311. Exemplarily, the water outlet unit 31 is a manually or electrically controlled faucet switch, on which the water production key 311 is set. When pure water is needed, the water production key 311 is activated by pressing, touching, moving, etc., and the water outlet unit 31 sends a pure water production instruction to the control module 10. Figures 1-7 As shown, another control method of a water purification device with cleaning and disinfection functions provided in the embodiment of the present application includes:

[0088] S201. Obtain the pure water preparation instruction of the water preparation key.

[0089] S202. According to the pure water preparation instruction, the water pipelines of the water supply module and the water production module are controlled to be connected, and the wastewater discharge pipelines of the sewage discharge module and the water production module are controlled to be connected.

[0090] Specifically, the control module 10 obtains the pure water preparation instruction transmitted by the water outlet unit 31, retrieves the pure water preparation program stored in the control module 10, and starts the program.

[0091] S203, controlling the water production module to prepare pure water.

[0092] Continue to refer to the above embodiment Figure 3 As shown, pure water preparation is achieved.

[0093] On the basis of the above embodiment, continue to refer to Figure 6 The water production module 30 further includes a pure water filter unit 32 and a flow detection unit 33 ; the pure water filter unit 32 is disposed in the water pipe of the water production module 30 , and the flow detection unit 33 is electrically connected to the control module 10 .

[0094] Specifically, the pure water filtration unit 32 may use an RO reverse osmosis membrane filter element for removing pollutants such as viruses, bacteria, organic matter, heavy metals, etc. in water, or other filter elements, such as a nanofiltration filter element.

[0095] In some embodiments, the flow detection unit 33 is also provided in the water pipe of the water production module 30, such as Figure 6As shown, the flow detection unit 33 is a liquid flow meter commonly used in water pipes, the water inlet of the flow detection unit 33 is communicated with the water outlet of the pure water filtering unit 32, and the flow detection unit 33 is used to detect the pure water flow in the water pipe; the flow detection unit 33 is electrically connected with the control module 10, and the flow detection unit 33 transmits the detected pure water flow signal S0 to the control module 10.

[0096] In some embodiments, the flow detection unit 33 can be an ultrasonic flow meter, which does not need to be connected to the water pipe, and measures the pure water flow in the water pipe based on the principle that the propagation speed of ultrasonic waves in the flowing medium is equal to the vector sum of the average flow velocity of the measured medium and the speed of the sound wave in the static medium. It should be noted that the present application only exemplarily illustrates the liquid flow meter commonly connected to the water pipe. Figure 6

[0097] Continuing to refer to Figure 6 and Figure 7 As shown, in the process of preparing pure water, the following steps are included:

[0098] S204, obtaining the pure water flow of the pure water outlet of the pure water filtering unit.

[0099] Specifically, the flow detection unit 33 detects the pure water flow in the water pipe of the pure water outlet of the pure water filtering unit at all times, and transmits the detected pure water flow signal S0 in the water pipe to the control module 10, and the control module 10 receives the pure water flow signal S0.

[0100] S205, calculating the reduction of the current pure water flow relative to the nominal flow.

[0101] S206, when the reduction is greater than or equal to the preset reduction, the working procedure of the water purification system is controlled to be switched from pure water preparation to cleaning and disinfection.

[0102] Exemplarily, the nominal flow stored in the control module 10 is M0, the preset reduction is ΔM, and exemplarily, ΔM is set to 3%. The current pure water flow in the water pipe obtained by the control module 10 is M, and the reduction of the current pure water flow relative to the nominal flow is calculated as |M0-M| / M0. When |M0-M| / M0≥3%, it indicates that the pure water preparation condition is not met at this time, the water purification system cannot prepare pure water, and the water purification system needs to start the cleaning and disinfection procedure, combined with Figure 4 As shown, the control module 10 controls the water pipes of the water supply module 10 and the water preparation module 30 to be disconnected, controls the water preparation module 30 to stop preparing pure water, and controls the cleaning and disinfection module 40 to be started to clean and disinfect the water pipes of the water preparation module 30.

[0103] Figure 8 For Figure 1 ​Schematic diagram of another control method of a water purification system with cleaning and disinfection functions. Figure 6 The water outlet unit 31 also includes a cleaning and disinfection key 312. For example, the water outlet unit 31 is also provided with a cleaning and disinfection key 312. When the pure water channel needs to be cleaned and disinfected, the cleaning and disinfection key 312 can be activated by pressing, touching, moving, etc., and the water outlet unit 31 sends a cleaning and disinfection instruction to the control module 10. Figure 6 and Figure 8 As shown, another control method of a water purification device with cleaning and disinfection functions provided in the embodiment of the present application includes:

[0104] S301. Obtain the cleaning and disinfection instruction of the cleaning and disinfection key.

[0105] S302: Detect the amount of disinfectant water in the cleaning and disinfection module according to the cleaning and disinfection instruction.

[0106] Specifically, the control module 10 obtains the cleaning and disinfection instruction emitted by the water outlet unit 31, calls the cleaning and disinfection program stored in the control module 10, starts the cleaning and disinfection module 40, detects the amount of disinfection water in the cleaning and disinfection module, and determines whether the amount of disinfection water in the water channel of the cleaning and disinfection module meets the cleaning conditions. If so, the cleaning and disinfection is started; if not, the preparation of the cleaning and disinfection solution is started.

[0107] S303, controlling the cleaning and disinfection module to prepare an oxidizing solution.

[0108] Continue to refer to the above embodiment Figure 4 shown.

[0109] S304, controlling the water pipelines of the cleaning and disinfection module to be connected with the water production module, and controlling the wastewater discharge pipelines of the sewage discharge module to be connected with the wastewater discharge pipeline of the water production module.

[0110] Continue to refer to the above embodiment Figure 4 shown.

[0111] S305, controlling the oxidizing solution to clean the water pipeline of the water production module and the sewage discharge module to discharge the used oxidizing solution.

[0112] Continue to refer to the above embodiment Figure 1 and Figure 4 As shown, the water pipeline of the water production module 30 is cleaned and disinfected.

[0113] Figure 9 for Figure 1 Schematic diagram of another control method of a water purification system with cleaning and disinfection functions. Figure 6The cleaning and disinfecting module 40 comprises a water storage tank 41, an oxidizing reagent adding device 42 and an electrolysis generating device 43. The water storage tank 41 comprises a first calibrated water level H1. With continued reference to Figure 6 and Figure 9 The application further provides another control method of a water purifying device with a cleaning and disinfecting function, which comprises the following steps:

[0114] S401: determining a working procedure of the water purifying system.

[0115] Specifically, when the system obtains a cleaning and disinfecting instruction, it is determined that the water purifying system starts a cleaning and disinfecting procedure; when the system obtains a pure water preparation instruction, it is determined that the water purifying system starts a pure water preparation procedure.

[0116] When it is determined that the water purifying system starts the pure water preparation procedure:

[0117] S402: judging whether the solution in the water storage tank is an electrolytic solution for preparing an oxidizing solution.

[0118] If yes, step S404 is performed; if no, step S405 is performed.

[0119] Specifically, in some embodiments, a sodium hypochlorite aqueous solution can be selected as the oxidizing solution, and the electrolysis generating device 43 is a sodium hypochlorite generator; in some embodiments, other oxidizing solutions with high oxidizing properties can also be selected, such as a chlorine dioxide solution, an ozone mixed solution, etc. The application is exemplarily described by taking the preparation of a sodium hypochlorite aqueous solution from an electrolytic sodium chloride solution as an example. The electrolytic solution for preparing the sodium hypochlorite aqueous solution in the application satisfies the following conditions:

[0120] 1. The water level in the water storage tank reaches a cleaning and disinfecting water level;

[0121] 2. The concentration value of the oxidizing reagent in the solution in the water storage tank reaches a concentration calibration value;

[0122] 3. The turbidity value of the solution in the water storage tank is lower than a turbidity calibration value.

[0123] S403: controlling the electrolysis generating device to electrolyze the electrolytic solution in the water storage tank to prepare an oxidizing solution.

[0124] Specifically, with continued reference to Figure 6 When the solution in the water storage tank 41 satisfies the preparation condition of the oxidizing solution, i.e., the electrolytic solution for preparing the sodium hypochlorite aqueous solution, the control module 10 controls the electrolysis generating device 43 to electrolyze the solution in the water storage tank 41. Taking the electrolysis of a sodium chloride solution by a sodium hypochlorite generator as an example, the electrolysis principle of the sodium hypochlorite generator for generating a sodium hypochlorite (NaClO) solution from the sodium chloride solution is as follows:

[0125] 2NaCl + 2H2— Cl2+ H2+ 2NaOH, (1.1);

[0126] Cl2+ 2NaOH— NaCl + H2O + NaClO, (1.2);

[0127] In the chemical formula (1.1), the hydroxyl OH - and hypochlorite ClO-both have strong oxidizing properties of sterilization and disinfection, and can also take away the electrons of residual pesticides and stain dirt molecules, thereby destroying their molecular chain structure, achieving the purpose of killing bacteria and removing dirt. In the cleaning and disinfection of the present application, the electrolysis obtains hydroxyl OH - and hypochlorite ClO-can sterilize and disinfect and remove dirt from the waterway pipeline of the water preparation module 30 and the filter element, etc., and improve the quality of the later pure water preparation.

[0128] S404, controlling the water supply module to supply water to the water storage tank and controlling the oxidizing agent adding device to add oxidizing agent to the water storage tank, to prepare an electrolytic solution of oxidizing solution.

[0129] Specifically, with reference to the above-mentioned Figure 6 When the solution in the water storage tank 41 does not meet the preparation conditions of the oxidizing solution, the control module 10 controls the water supply module 10 to communicate with the waterway pipeline of the cleaning and disinfection module 40, controls the water supply module 10 to supply water to the water storage tank 41, and controls the oxidizing agent adding device 42 to add oxidizing agent to the water storage tank, to prepare an electrolytic solution of oxidizing solution.

[0130] Among them, the oxidizing agent in the electrolytic solution can be sodium chloride solution or salt block.

[0131] With reference to the above-mentioned Figure 4 When the solution in the water storage tank is an electrolytic solution of oxidizing solution, the control module 10 controls the electrolysis device 43 to electrolyze the solution in the water storage tank 41, and continues to refer to the above-mentioned chemical formula (1.1) and (1.2), to obtain an oxidizing solution.

[0132] On the basis of the above-mentioned embodiment, with reference to the above-mentioned Figure 6 The cleaning and disinfection module 40 further comprises an exhaust unit 48 and a gas detection unit 49. When the cleaning and disinfection module 40 is electrolyzed and opened, the exhaust unit 48 is opened to discharge the gas in the water storage tank 41; when the cleaning and disinfection module 40 is electrolyzed and closed, the exhaust unit 48 is closed.

[0133] The exhaust unit 48 may be an exhaust valve, the air inlet of which is connected to the water storage tank 41, and the exhaust valve and the gas detection unit 49 are electrically connected to the control module 10. The gas detection unit 49 may be a hydrogen detector, a chlorine detector, etc. Taking the gas detection unit 49 as a residual chlorine detector as an example, in steps 404 and 406, when controlling the cleaning and disinfection module to prepare the oxidizing solution, the control method further includes:

[0134] The gas detection unit is used to obtain the gas concentration value of the preset gas in the water tank and transmit the gas concentration value to the control module.

[0135] The control module compares the detected gas concentration value with the calibrated gas concentration value, and determines whether the gas concentration value of the preset gas reaches the calibrated gas concentration value. If so, the control module stops electrolysis to obtain an oxidizing solution.

[0136] Exemplary, reference Figure 6 As shown, when the sodium chloride solution in the water tank 41 is electrolyzed, a small amount of hydrogen H2 and chlorine Cl2 will be produced according to the chemical formula (1.1). At this time, the control module 10 controls the exhaust unit 48 to open and discharge the small amount of hydrogen H2 produced by electrolysis. When the residual chlorine detector detects that the residual chlorine concentration P3 is ≥ 200ppm, the electrolysis is stopped and the exhaust valve 22 is controlled to be closed.

[0137] S405 , controlling the water pipelines of the cleaning and disinfection module to be connected with the water production module, and controlling the wastewater discharge pipelines of the sewage discharge module to be connected with the wastewater discharge pipeline of the water production module.

[0138] Specifically, after the oxidizing solution is prepared, the control module 10 controls the water outlet of the cleaning and disinfection module 40 and the water inlet of the water production module 30 to be connected, and the first water outlet of the water production module 30 is connected to the water inlet of the sewage discharge module 50 to form a waste gas oxidizing solution discharge waterway.

[0139] Among them, continue to combine Figure 6 As shown, the sewage discharge module 50 includes a wastewater valve, which is connected to the control module 10. When wastewater needs to be discharged, the control module 10 controls the wastewater valve to open.

[0140] S406, controlling the water pipeline of the water production module to be cleaned with the oxidizing solution and the wastewater discharge unit to discharge the used oxidizing solution.

[0141] Specifically, continue to combine Figure 6 As shown, the water production module 30 also includes a boosting unit 34, which is arranged at the water inlet end of the water production module 30 and is connected to the control module 10; the cleaning and disinfection module 40 also includes a water outlet valve 47, which is connected to the control module 10.

[0142] When the cleaning and disinfecting program is started, the control module 10 controls the water outlet valve 47 to open, the booster unit 34 starts, the booster unit 34 draws the oxidizing solution in the water storage tank 311 into the water channel pipeline of the water production module 30, and after the oxidizing solution flushes the water channel pipeline, it is discharged to the sewage module 50 through the second water outlet of the water production module 30. Among them, the sewage module 50 can be provided with a wastewater storage tank or directly discharged into the public pipeline; the water outlet valve 47 is also the water inlet valve of the water supply module 10 for supplying water to the water storage tank 41. Optionally, the water production module 30 further comprises a pure water outlet valve 34, which is connected with the control module 10, the water inlet of which is communicated with the water outlet of the flow detection unit 33, and the water outlet is communicated with the water inlet of the water outlet unit 31. The pure water outlet valve 34 is used to control the pure water to pass through.

[0143] When the working program of the water purification system is pure water preparation, the control method comprises:

[0144] S407, control the water channel pipeline of the water supply module and the water production module to be communicated.

[0145] Continuing to refer to the above-mentioned embodiments Figures 1-3 as shown.

[0146] S408, control the water production module to prepare pure water.

[0147] Continuing to refer to the above-mentioned embodiments Figures 1-3 as shown.

[0148] Continuing to refer to Figure 6 as shown, the cleaning and disinfecting module 40 further comprises a water level detector 44, a turbidity detector 45 and a TSD detector 46, which are respectively electrically connected with the control module 10. Among them, the detection end of the water level detector 44 is located in the water storage tank 41, which is used to detect the water level value in the water storage tank 41; the detection end of the turbidity detector 45 is located in the water storage tank 41, which is used to detect the concentration value of the oxidizing agent in the solution in the water storage tank 41; the detection end of the TSD detector 46 is located in the water storage tank 41, which is used to detect the turbidity value of the solution in the water storage tank 41. It should be noted that the cleaning and disinfecting module 40 can also include other water quality detection instruments for detecting water quality parameters such as temperature in the solution in the water tank.

[0149] This application takes sodium hypochlorite aqueous solution as the oxidizing solution, and the electrolysis generating device 43 is a sodium hypochlorite generator as an example. Before the solution in the electrolytic water storage tank 311, the control method of step 403 for judging whether the solution in the water storage tank meets the preparation condition of the oxidizing solution comprises:

[0150] Step S1, obtaining the water level value of the solution in the water storage tank 41 detected by the water level detector 44, and determining whether the water level of the solution in the water storage tank 41 reaches the first calibration water level according to the detected water level value. If not, step S2 is performed; if yes, step S3 is performed.

[0151] The water amount at the first calibration water level meets the cleaning and disinfecting water amount of the water supply module 30 water channel pipeline.

[0152] Specifically, the control module 10 obtains the water level value of the solution in the water storage tank 41 detected by the water level detector 44, and determines whether the water level value of the water storage tank 41 at the current time reaches the first calibration water level. If not, step S2 is performed; if yes, step S3 is performed.

[0153] To avoid the influence of the repeated water supply and the repeated preparation of sodium hypochlorite solution on the flushing efficiency, the volume of the water storage tank 311 provided in the embodiment is designed to be large enough, and the capacity of the sodium hypochlorite solution prepared by the water storage tank 311 at one time meets the following fresh and disinfecting whole flushing operation process, and there is no interruption of the flushing process due to the water supplement of the water storage tank 311 in the flushing process.

[0154] S2, the control module 10 controls the water supply module 20 to supply water to the water storage tank 41.

[0155] Specifically, when the water level value in the water storage tank 41 is lower than the first calibration water level, it indicates that the water storage tank 41 is short of water, and the control module 10 controls the water supply end of the water supply module 20 to communicate with the water inlet end of the cleaning and disinfecting module 40, and controls the water supply module 20 to supply water to the water storage tank 41.

[0156] In some embodiments, the water channel of the water supply module 20 includes the original water inlet 21, the impurity filtering unit 22 and the water inlet valve 23. Figure 6 The water outlet of the water inlet valve 23 and the water inlet of the water outlet valve 47 are communicated, and the water inlet valve 23 and the water outlet valve 47 are respectively electrically connected with the control module 20, and when it is needed to supply water to the water storage tank 41, the water inlet valve 23 and the water outlet valve 47 are opened at the same time. The impurity filtering unit can be a PP+CTO filter element, which is a superposition of a PP (polypropylene spray solution) filter element and a CTO (compressed activated carbon) filter element. The superposition of the PP (polypropylene spray solution) filter element and the CTO (compressed activated carbon) filter element is used to remove solid substances such as silt, rust and algae in water by using the PP filter element, and to further remove residual chlorine, odor and solid impurities in water by using the CTO filter element.

[0157] The water level detector 44 monitors the water level value of the solution in the water storage tank 41 in real time, and transmits the obtained water level value signal to the control module 10. The control module 10 continuously judges whether the water level value reaches the first calibrated water level. When the water level value is equal to or higher than the first calibrated water level, it means that the water storage tank is full at this time. When the control module 10 controls the water supply end of the water supply module 20 to be disconnected from the water inlet end of the cleaning and disinfecting module 40, refer to Figure 6 As shown in the figure, the control module 10 controls the water inlet valve 23 and the water outlet valve 47 to be closed, and controls the water supply module 20 to stop supplying water to the water storage tank 41.

[0158] S3, judge whether the mixed solution in the water storage tank 41 is an electrolytic solution of the oxidizing solution. If yes, execute step S4; if no, execute step S5.

[0159] Among them, the electrolytic solution of the oxidizing solution satisfies the preparation condition of preparing the sodium hypochlorite aqueous solution provided in the above embodiment.

[0160] Specifically, continue to combine Figure 6 As shown in the figure, the turbidity detector 45 is used to detect the concentration value of the oxidizing agent in the solution in the water storage tank 41, and the TSD detector 46 is used to detect the turbidity value of the solution in the water storage tank 41. As an example, the oxidizing agent is sodium chloride (salt block), the turbidity calibration value is set to 200ppm, and the turbidity calibration value is 0.5NTU.

[0161] When the concentration value P1 of the oxidizing agent in the mixed solution in the water storage tank is greater than or equal to 200ppm, and the turbidity value P2 of the mixed solution is less than 0.5NTU, it is judged that the solution in the water storage tank 41 satisfies the preparation condition of preparing the oxidizing solution; when the concentration value P1 of the oxidizing agent in the mixed solution in the water storage tank is less than 200ppm and / or the turbidity value P2 of the mixed solution is greater than or equal to 0.5NTU, it is judged that the solution in the water storage tank 41 does not satisfy the preparation condition of preparing the oxidizing solution.

[0162] On the basis of the above embodiment, continue to refer to Figure 6 As shown in the figure, the oxidizing agent adding device 42 further comprises a stabilizer, the material of the stabilizer is the same as that of the oxidizing agent; the volume of the oxidizing agent is greater than that of the stabilizer.

[0163] Specifically, continue to refer to the example of the electrolytic sodium chloride solution provided in the above embodiment, the oxidizing agent in the oxidizing agent adding device 42 is sodium chloride (NaCl, salt block) or high-concentration sodium chloride (NaCl) solution. In combination with the above embodiment, after the oxidizing solution is prepared, before the solution in the water storage tank is electrolyzed in steps 404 and 406, the control method further comprises:

[0164] Controlling the oxidizing agent adding device 42 to put the stabilizer 31 into the water storage tank 41.

[0165] Specifically, the chemical reaction principle of using sodium chloride (NaCl) as a stabilizer for sodium hypochlorite solution is as follows:

[0166]

[0167] In combination with chemical formula (1.3), when the content of NaCl in the electrolytic solution is maintained at a slight excess, the reaction in chemical formula (1.3) will move to the left, and the concentration of NaClO will maintain a stable state, so as to ensure that the oxidizing solution after electrolysis has high oxidizing and sterilizing effects.

[0168] On the basis of the above embodiment, with reference to Figure 6 , in combination with Figure 9 , before step 408, the control method further comprises:

[0169] S409, obtaining a water level value of the water storage tank at the current moment and a gas concentration value of the preset gas.

[0170] Specifically, in combination with Figure 6 , a water level detector 44 is used to detect the solution water level value in the water storage tank 41, a gas detection unit is used to detect the concentration P3 of residual chlorine in the water storage tank 41, and the detected solution water level value and residual chlorine concentration P3 value are transmitted to the control module 10.

[0171] S410, determining whether the current water level value reaches the first calibration water level and whether the gas concentration value of the preset gas is greater than the calibration gas concentration value.

[0172] If both are yes, step S406 is executed; if not, steps 402-405 are continued to prepare the oxidizing solution.

[0173] On the basis of the above embodiment, the water storage tank 41 further comprises a second calibration water level H2; wherein the first calibration water level is higher than the first calibration water level.

[0174] S411, obtaining the water level value of the water storage tank in real time.

[0175] Specifically, a water level detector 44 is used to detect the solution water level value in the water storage tank 41, and the detected solution water level value is transmitted to the control module 10.

[0176] S412, determining whether the current water level value is lower than the second calibration water level H2. If yes, step S413 is executed, and if not, step S405 is executed.

[0177] S413, controlling the waterway pipeline of the cleaning and disinfecting module and the water making module to be disconnected.

[0178] The first calibration water level is the lowest water level of the water storage tank 41 meeting the cleaning and disinfection. If the current position of the water storage tank 41 is lower than the water level, it indicates that the water storage tank 41 is short of water, and the cleaning and disinfection module is controlled to stop cleaning and disinfection.

[0179] In summary, the control method of the water purification system with the cleaning and disinfection function provided by the embodiments of the present application can improve the problem of odor of the outlet water caused by bacteria breeding during use and storage of the water purification system, and can remove the pollutants such as scale and biofilm formed on the surface of the RO membrane filter element, thereby prolonging the service life of the water purification system.

[0180] Note that the above are only the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments, mutual combinations and substitutions without departing from the protection scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A control method for a water purification system with cleaning and disinfection functions, the water purification system comprising a control module, a water production module, a cleaning and disinfection module, a water supply module, and a sewage discharge module; the control module being electrically connected to the water production module and the cleaning and disinfection module, respectively, and the control module being also electrically connected to the water supply module and the sewage discharge module; the cleaning and disinfection module comprising a water storage tank, an oxidizing agent addition device, and an electrolysis generator; the oxidizing agent addition device comprising an oxidizing agent and a stabilizer, the stabilizer and the oxidizing agent being made of the same material; the stabilizer and the oxidizing agent comprising sodium chloride solution; It is characterized in that The control method includes: Obtain cleaning and disinfection instructions for the water purification system; detecting the amount of disinfectant water in the cleaning and disinfection module according to the cleaning and disinfection instruction; Determine whether the solution in the water tank is an electrolytic solution for preparing an oxidizing solution: If yes, controlling the cleaning and disinfection module to prepare an oxidizing solution includes: Controlling the electrolysis generating device to electrolyze the electrolytic solution in the water storage tank to prepare an oxidizing solution; The process of preparing the oxidizing solution also includes: obtaining a gas concentration value of a preset gas in the water storage tank; Determining whether the gas concentration value of the preset gas reaches the calibrated gas concentration value, and if so, controlling the cleaning and disinfection module to stop electrolysis to obtain an oxidizing solution; determining whether the solution in the water tank is an electrolytic solution for preparing an oxidizing solution, and if not, controlling the water supply module to supply water to the water tank and controlling the oxidizing agent adding device to add an oxidizing agent to the water tank to prepare an electrolytic solution for preparing an oxidizing solution; Controlling the water pipelines of the cleaning and disinfection module to be connected with the water production module, and controlling the sewage discharge module to be connected with the wastewater discharge pipeline of the water production module; After the oxidizing solution is prepared, controlling the oxidizing agent adding device to add a stabilizer to the water storage tank; When the amount of disinfecting water meets the cleaning and disinfection conditions, the cleaning and disinfection module is started to clean and disinfect the water channel of the water production module.

2. The control method according to claim 1, characterized in that: Starting the cleaning and disinfection module to clean and disinfect the water channel of the water production module includes: The oxidizing solution is controlled to clean the water pipeline of the water production module and the wastewater discharge unit is controlled to discharge the used oxidizing solution.

3. The control method according to claim 1, wherein: Before controlling the oxidizing solution to clean the water pipe of the water production module and the sewage discharge module to discharge the used oxidizing solution, the control method further includes: Obtaining the water level value of the water storage tank and the gas concentration value of the preset gas at the current moment; Determining whether the current water level value reaches the first calibration water level and determining whether the current gas concentration value of the preset gas is greater than the calibration gas concentration value; If both are yes, controlling the oxidizing solution to clean the water pipe of the water production module and the sewage discharge module to discharge the used oxidizing solution; If all the answers are no, continue to prepare the oxidizing solution.

4. The control method according to claim 1, wherein: The water storage tank includes a first calibrated water level and a second calibrated water level; wherein the first calibrated water level is higher than the second calibrated water level; In the process of controlling the oxidizing solution to clean the water pipe of the water production module and the sewage discharge module to discharge the used oxidizing solution, the control method further includes: Obtaining the water level value of the water storage tank in real time; Determining whether the current water level value is lower than a second calibrated water level; If yes, disconnect the water pipeline between the cleaning and disinfection module and the water production module; If not, continue to control the water pipeline of the cleaning and disinfection module to be connected with the water production module.

5. The control method according to claim 1, characterized in that: The cleaning and disinfection module further comprises an exhaust unit; the exhaust port of the exhaust unit extends into the water tank; When the electrolysis of the cleaning and disinfection module is turned on, the exhaust unit is controlled to open; When the electrolysis of the cleaning and disinfection module is turned off, the exhaust unit is controlled to be closed.

6. The control method according to claim 2, characterized in that: It also includes a water supply module and a sewage discharge module, and the control module is also electrically connected to the water supply module and the sewage discharge module. The control method includes: Obtain pure water preparation instructions from the water purification system; According to the pure water preparation instruction, the water supply module and the water pipe of the water production module are controlled to be connected, and the sewage discharge module and the wastewater discharge pipe of the water production module are controlled to be connected; Control the water production module to prepare pure water.

7. The control method according to claim 6, characterized in that: The water production module further includes a pure water filtration unit and a flow detection unit; the pure water filtration unit is arranged in the water pipe of the water production module; During the pure water preparation process, the control method further comprises: Obtaining the pure water flow rate flowing through the pure water outlet of the pure water filtration unit; Calculate the reduction of the current pure water flow rate relative to the nominal flow rate; When the reduction amount is greater than or equal to the preset reduction amount, the working procedure of the water purification system is controlled to switch from pure water preparation to cleaning and disinfection.

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