Water purification device flushing control method and apparatus, water purification device, and electronic device

Abstract

The application relates to a water purifying equipment flushing control method. When the water purifying equipment is in a flushing mode, a booster pump is controlled to operate and a backwater on-off valve is controlled to be turned off based on an initial flushing control program, so that a first-stage flushing is performed on a pure water filter element of the water purifying equipment. Then, when the backwater on-off valve is turned on and the second-stage flushing is entered, the initial flushing control program is modified according to the upstream water pressure variation range of the pure water filter element before and after the backwater on-off valve is turned on, a target flushing control program is obtained, and the booster pump and the backwater on-off valve are controlled to operate, so that the flushing of the pure water filter element is completed. When the second-stage flushing of the backwater branch is turned on, the flushing control program is modified according to the upstream water pressure variation range of the pure water filter element before and after the backwater on-off valve is turned on, the repeated large fluctuation of the upstream water pressure of the pure water filter element is effectively weakened, the large attenuation of the water purifying flow under the action of water hammer of the filter element is avoided, and the service life of the water purifying equipment is ensured from being shortened.

Description

Technical Field

[0001] This application relates to the field of water purification equipment technology, and in particular to a water purification equipment flushing control method, device, water purification equipment, electronic equipment, storage medium and computer program product. Background Technology

[0002] As people's living standards continue to improve, filtration technology has emerged and is widely used in water purification equipment. However, because the filter cartridges of water purification equipment contain components such as protective fluid, especially pure water filter cartridges such as reverse osmosis membrane cartridges which contain a large amount of protective fluid, they need to be cleaned after the initial installation to ensure that the water quality output from the water purification equipment meets the standards.

[0003] In traditional technology, the return water branch is usually opened or closed during the initial flushing process to thoroughly flush the filter cartridges of the water purifier. However, in practical applications, it has been found that the opening or closing of the return water branch causes repeated and significant fluctuations in the pressure in front of the reverse osmosis membrane filter cartridge, and the filter cartridge also experiences a significant decrease in purified water flow under the action of water hammer, indirectly shortening the service life of the water purifier. Summary of the Invention

[0004] Therefore, it is necessary to provide a water purification equipment flushing control method, device, water purification equipment, electronic equipment, storage medium, and computer program product to address the technical problem of the significant decrease in purified water flow during the installation and flushing process, which indirectly shortens the service life of the water purification equipment.

[0005] In a first aspect, this application provides a flushing control method for a water purification device, the method comprising:

[0006] Determine the operating mode of the water purification equipment;

[0007] When the water purification equipment is in flushing mode, the booster pump of the water purification equipment is controlled to run based on the initial flushing control program, and the return water valve of the water purification equipment is controlled to close, so as to perform the first stage flushing of the pure water filter element of the water purification equipment.

[0008] When the return water valve is turned on and the second stage of flushing is entered, the initial flushing control program is modified according to the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on, so as to obtain the target flushing control program.

[0009] The target flushing control program controls the operation of the booster pump and the return water valve to complete the flushing of the pure water filter element.

[0010] In one embodiment, the step of modifying the initial flushing control program based on the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on includes:

[0011] If the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on is greater than the preset change in water pressure, the initial flushing control program is modified based on the first correction strategy so that the upstream water pressure of the pure water filter element is reduced after the return water valve is turned on.

[0012] If the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on is less than the preset change in water pressure, the initial flushing control program is modified based on the second correction strategy so that the upstream water pressure of the pure water filter element increases after the return water valve is turned on.

[0013] In one embodiment, the flushing control program includes a first-stage flushing parameter control, a second-stage flushing parameter control, and a third-stage flushing parameter control, wherein the second-stage flushing parameter control includes booster pump operating parameter control.

[0014] The modification of the initial flushing control program based on the first modification strategy to reduce the upstream water pressure of the pure water filter element after the return water valve is opened includes:

[0015] The booster pump operating parameters in the second stage flushing parameter control of the initial flushing control program are reduced so that the upstream water pressure of the pure water filter element is reduced after the return water conduction valve is opened.

[0016] The modification of the initial flushing control program based on the second modification strategy to increase the upstream water pressure of the pure water filter element after the return water valve is opened includes:

[0017] The booster pump operating parameters in the second stage flushing parameter control of the initial flushing control program are increased so that the upstream water pressure of the pure water filter element increases after the return water conduction valve is opened.

[0018] In one embodiment, the booster pump operating parameters include the booster pump power supply voltage and / or the booster pump speed.

[0019] In one embodiment, the flushing control procedure further includes the number of flushing cycles;

[0020] The modification of the initial flushing control program based on the first modification strategy, so as to reduce the upstream water pressure of the pure water filter element after the return water valve is turned on, further includes:

[0021] Increase the number of flushing cycles in the initial flushing control program;

[0022] The modification of the initial flushing control program based on the second modification strategy to increase the upstream water pressure of the pure water filter element after the return water valve is opened includes:

[0023] Reduce the number of flushing cycles in the initial flushing control procedure.

[0024] In one embodiment, the method for obtaining the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on includes:

[0025] Obtain the first outlet pressure of the booster pump before the return water valve is turned on, and the second outlet pressure of the booster pump after the return water valve is turned on;

[0026] Based on the first outlet water pressure and the second outlet water pressure, the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on is obtained.

[0027] In one embodiment, the method for obtaining the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on includes:

[0028] The first operating current of the booster pump before the return water valve is turned on, and the second operating current of the booster pump after the return water valve is turned on are obtained.

[0029] Based on the first operating current and the second operating current, the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on is obtained.

[0030] In one embodiment, the method further includes:

[0031] Obtain the configuration and operation information of the water purification equipment;

[0032] If the configuration operation information includes flushing operation information, the water purification device is determined to be in flushing mode.

[0033] Secondly, this application also provides a flushing control device for a water purification equipment, the device comprising:

[0034] The determination module is used to determine the operating mode of the water purification equipment;

[0035] The control module is used to control the booster pump of the water purifier to run based on the initial flushing control program when the water purifier is in the flushing mode, and to control the return water valve of the water purifier to shut off, so as to perform the first stage flushing of the pure water filter element of the water purifier.

[0036] The correction module is used to correct the initial flushing control program based on the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on, when the return water valve is turned on and the second stage of flushing is entered, so as to obtain the target flushing control program.

[0037] The control module is also used to control the operation of the booster pump and the return water valve based on the target flushing control program, so as to complete the flushing of the pure water filter element.

[0038] Thirdly, this application also provides a water purification device, including a pure water filter element, a booster pump, a return water valve, and a controller; the booster pump is located upstream of the pure water filter element, the return water valve is located in the return water branch of the pure water filter element, one end of the return water branch is located upstream of the raw water inlet of the pure water filter element, and the other end is located downstream of the pure water outlet of the pure water filter element; the controller connects the booster pump and the return water valve.

[0039] The controller is used to control the operation of the booster pump and the return water valve according to the above-mentioned water purification equipment flushing control method, so as to achieve flushing of the pure water filter element.

[0040] Fourthly, this application also provides an electronic device. The electronic device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the steps of the method described above.

[0041] Fifthly, this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, which, when executed by a processor, implements the steps of the above-described method.

[0042] Sixthly, this application also provides a computer program product. The computer program product includes a computer program that, when executed by a processor, implements the steps of the above-described method.

[0043] The aforementioned water purification equipment flushing control method, apparatus, equipment, electronic device, storage medium, and computer program product determine the operating mode of the water purification equipment. When the equipment is in flushing mode, an initial flushing control program controls the operation of the booster pump and the closure of the return water valve to perform a first-stage flushing of the pure water filter element. Then, when the return water valve is opened and the second-stage flushing begins, the initial flushing control program is modified based on the upstream water pressure change of the pure water filter element before and after the return water valve is opened, resulting in a target flushing control program. Based on this target program, the booster pump and return water valve are controlled to complete the flushing of the pure water filter element. Because this application modifies the flushing control program based on the upstream water pressure change of the pure water filter element before and after the return water valve is opened during the second-stage flushing of the return water branch, it effectively reduces repeated large fluctuations in the upstream water pressure of the pure water filter element, avoiding a significant decrease in the purified water flow rate under water hammer, and ensuring that the service life of the water purification equipment is not shortened. Attached Figure Description

[0044] Figure 1 This is an application environment diagram of the flushing control method for a water purification device in one embodiment;

[0045] Figure 2 This is a flowchart illustrating a water purification equipment flushing control method in one embodiment;

[0046] Figure 3 This is a schematic diagram of the structure of a water purification device in one embodiment;

[0047] Figure 4 This is a flowchart illustrating the steps for modifying the initial flushing control procedure in one embodiment;

[0048] Figure 5 This is a flowchart illustrating the step of obtaining the change in upstream water pressure of a pure water filter element in one embodiment.

[0049] Figure 6 This is a flowchart illustrating the step of obtaining the change in upstream water pressure of the pure water filter element in another embodiment;

[0050] Figure 7 This is a schematic diagram of the structure of a water purification device in a specific embodiment;

[0051] Figure 8 This is a structural block diagram of the flushing control device for a water purification equipment in one embodiment;

[0052] Figure 9 This is a diagram of the internal structure of an electronic device in one embodiment;

[0053] Figure 10 This is a diagram of the internal structure of an electronic device in another embodiment. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0055] In one embodiment, the water purification equipment flushing control method provided in this application can be applied to, for example... Figure 1 In the illustrated application environment, the application environment involves a water purification device 102 and a controller 104, with the controller 104 located externally to the water purification device 102. In some embodiments, the water purification device 102 may further include the controller 104. The water purification device 102 can communicate with the controller 104 via a network or other means. A data storage system can store the data that the controller 104 needs to process. The data storage system can be integrated onto the controller 104 or placed in the cloud or on another network server.

[0056] The water purification device 102 includes a pure water filter element, a booster pump, and a return water valve. The booster pump is located upstream of the pure water filter element, and the return water valve is located in the return water branch of the pure water filter element. One end of the return water branch is located upstream of the raw water inlet of the pure water filter element, and the other end is located downstream of the pure water outlet of the pure water filter element. The controller 104 connects the booster pump and the return water valve to realize the flushing control of the pure water filter element. Specifically, the controller 104 can determine the mode of the water purification device 102; when the water purification device 102 is in the flushing mode, it controls the booster pump of the water purification device 102 to run based on the initial flushing control program, and controls the return water valve of the water purification device 102 to close, so as to perform the first stage flushing of the pure water filter element of the water purification device 102; when the return water valve is opened and the second stage flushing is entered, the initial flushing control program is corrected according to the change in upstream water pressure of the pure water filter element before and after the return water valve is opened, so as to obtain the target flushing control program; based on the target flushing control program, the booster pump and the return water valve are controlled to run to complete the flushing of the pure water filter element.

[0057] The water purification device 102 can be various types of household or commercial water purification equipment, such as point-of-use drinking water machines, central water softeners, and central water purifiers. The controller 104 can be an electronic device, such as a control chip, control circuit board, terminal, or server. The terminal can be, but is not limited to, various personal computers, smartphones, tablets, IoT devices, and portable wearable devices. IoT devices can be smart speakers, smart in-vehicle devices, etc. Portable wearable devices can be smartwatches, smart bracelets, etc. The server can be implemented using a standalone server or a server cluster composed of multiple servers.

[0058] In one embodiment, such as Figure 2 As shown, a flushing control method for a water purification device is provided, which is applied to... Figure 1 Taking the controller 104 in the water purification device 102 as an example, and taking the controller 104 as being installed inside the water purification device 102, the following steps S200 to S800 are included:

[0059] S200: Determine the operating mode of the water purification equipment.

[0060] Water purification equipment refers to devices that can filter colloids, organic matter, sediment, impurities, etc. from water, and most of them use reverse osmosis technology. Reverse osmosis technology refers to the separation of solutes and solvents in a solution by using a reverse osmosis membrane, which allows only water to pass through and not other substances, under pressure higher than the osmotic pressure of the solution. Utilizing the separation characteristics of the reverse osmosis membrane, dissolved salts, colloids, organic matter, bacteria, microorganisms, and other impurities in water can be effectively removed. Unfiltered water is also called raw water, and filtered water is called pure water. Water purification equipment can include at least one filter element, and the types of filter elements include, but are not limited to, activated carbon filter elements, reverse osmosis membranes, ultrafiltration membranes, softening resins, mineral filter elements, etc. The filter element in a water purification equipment is called a pure water filter element. In a specific example, a pure water filter element can refer to a reverse osmosis membrane filter element.

[0061] The mode in which a water purification device is operating indicates the current working process it is about to perform. Modes can include water usage mode and flushing mode. For example, when the water purification device is in water usage mode, it indicates that the user is using purified water after filtration. During filter cartridge manufacturing, a protective liquid is coated on the surface and deep inside of the pure water filter cartridge to ensure safety and purification effectiveness. Furthermore, as the water purification device is used over time, the pure water filter cartridge may become clogged. Therefore, when the water purification device is in flushing mode, it indicates that the pure water filter cartridge needs to be flushed.

[0062] Specifically, there is no single way to determine the working mode of a water purifier. It can be determined as a water usage mode based on the user's water usage operation command, or as a flushing mode based on the user's flushing operation command, or as a flushing mode based on the user's power-on operation of the water purifier.

[0063] In one embodiment, determining that the water purification device is in a flushing mode may include: obtaining power-on operation information of the water purification device based on its power-on operation; and determining that the water purification device is in flushing mode when it is determined to be operating for the first time based on the power-on operation information.

[0064] It's understandable that when a user initially installs a water purifier, flushing is necessary to ensure water quality and remove the protective liquid coated on the pure water filter. Generally, the user will power on the water purifier upon initial installation. During this process, the controller detects the power-on and performs a data self-check each time. The controller can obtain the water purifier's power-on operation information, including historical water production and the number of times it has been powered on. If the controller detects any non-zero value for any of these power-on operation data, it determines that the water purifier is not being powered on for the first time. If all the above data are zero, it determines that the water purifier is being powered on for the first time and is in flushing mode.

[0065] In one embodiment, the above-mentioned water purification equipment flushing control method further includes: obtaining configuration operation information of the water purification equipment; and determining that the water purification equipment is in flushing mode if the configuration operation information carries flushing operation information.

[0066] It is understandable that the configuration operation information can be generated by the user's configuration operations on the water purifier. These configuration operations can be related to the operation information of specific buttons on the water purifier. A special button can be set on the water purifier to control it to enter flushing mode. When the user replaces the pure water filter cartridge or the filter cartridge becomes clogged, this special button needs to be pressed to reset it. Only then can the water purifier start and enter flushing mode. Specifically, the controller can obtain the configuration operation information for the water purifier; when the configuration operation information includes flushing operation information, it determines that the water purifier is in flushing mode.

[0067] S400: When the water purifier is in flushing mode, the booster pump of the water purifier is controlled to run based on the initial flushing control program, and the return water valve of the water purifier is controlled to shut off, so as to perform the first stage flushing of the pure water filter element of the water purifier.

[0068] Please see Figure 3 Using the filter membrane of the pure water filter cartridge as a dividing line, one side of the membrane is the raw water, and the other side is the filtered pure water. The side where the raw water (400) flows into the pure water filter cartridge is called the raw water side, and the side where the pure water (500) flows out is called the product water side. The inlet 30 where the raw water flows in is called the raw water inlet 30 of the pure water filter cartridge, and the outlet 40 where the pure water flows out is called the pure water outlet 40 of the pure water filter cartridge. When the water purification equipment is in flushing mode, the pure water filter cartridge is flushed, that is, both the raw water side and the product water side of the pure water filter cartridge are flushed.

[0069] Continue reading Figure 3The outlet 35 is the outlet for wastewater filtered by the pure water filter element; that is, the pure water filter element also has a wastewater outlet 35. The water purification equipment also includes a return water branch 300. One end of the return water branch 300 is located upstream of the raw water inlet 30 of the pure water filter element, and the other end is located downstream of the pure water outlet 40 of the pure water filter element. Therefore, when the water purification equipment is equipped with a pure water filter element, one end of the return water branch 300 can be connected to the raw water inlet 30 of the pure water filter element, and the other end can be connected to the pure water outlet 40 of the pure water filter element. In this way, pure water entering the return water branch 300 from the product water side of the pure water filter element can flow back to the raw water side, forming a water circulation system.

[0070] It is understandable that when the return water branch is closed (i.e., the return water branch is not open), raw water enters the raw water side of the pure water filter element from the raw water inlet. Then, the flushed water can flow out from the wastewater outlet to flush the raw water side of the pure water filter element. When the return water branch is open (i.e., the return water branch forms a water circulation), raw water flows into the raw water side of the pure water filter element from the raw water inlet. Then, after being filtered by the filter membrane of the pure water filter element, pure water is produced on the product water side, which flushes the product water side of the pure water filter element. The pure water flows back to the raw water side through the return branch, which strengthens the flushing of the raw water side of the pure water filter element. That is, when the return water branch is open, both the raw water side and the product water side of the pure water filter element can be flushed simultaneously.

[0071] Correspondingly, an inlet solenoid valve and a booster pump (pressure stabilizing pump) can be installed on the raw water side of the pure water filter element to control the inlet water and the raw water pressure, respectively. A wastewater valve can also be installed on the wastewater outlet side to control the flow rate and speed of the wastewater. Multiple return water valves can also be installed on the return water branch to control the opening or closing of the return water branch and to control the direction of water flow, thereby achieving flushing of different sides of the pure water filter element. The type and material of the return water valve can be selected according to actual technical needs. In a specific example, the return water valve can include a return solenoid valve and a check valve. The check valve allows water to flow in one direction and prevents water from flowing in the opposite direction. The return solenoid valve can control the direction, flow rate, and speed of water flow. When the return water branch is in the open state, both the return solenoid valve and the check valve are open; when the return water branch is in the closed state, both the return solenoid valve and the check valve are closed.

[0072] Specifically, the initial flushing control program is a pre-stored flushing control program in the controller used to control the water purification equipment to perform flushing. This flushing control program may include control over the operating parameters of the inlet solenoid valve and the booster pump to control the raw water inlet and water pressure of the pure water filter element. The flushing control program may also include control over the operating parameters of the return solenoid valve and the check valve to control the opening or closing of the return water branch. Furthermore, the flushing control program may include on / off control of the aforementioned solenoid valves to control the water flow direction, flow rate, or water pressure.

[0073] Furthermore, the flushing control program can include multi-stage flushing control. For example, the first stage of flushing can be controlling the shut-off of the return water branch and controlling the operating parameters of the booster pump to flush only the raw water side of the pure water filter element; this can be called the forward flushing and concentration removal stage. The second stage of flushing can be controlling the opening of the return water branch and simultaneously controlling the operating parameters of the booster pump to achieve synchronous flushing of both the raw water and product water sides of the pure water filter element; this can be called the pure water recirculation flushing stage. The third stage can also be controlling the shut-off of the return water branch, controlling the shut-off of the inlet solenoid valve and the wastewater valve, and simultaneously controlling the operating parameters of the booster pump to achieve static soaking of both the raw water and product water sides of the pure water filter element; this can be called the static soaking stage. Furthermore, the flushing control program can also include parameters such as the flushing operation sequence of the above multi-stage flushing, the stage duration of each flushing process, and the number of flushing cycles for the entire stage.

[0074] Furthermore, once the water purification equipment is started and confirmed to be in flushing mode, the pre-stored initial flushing control program is first retrieved, and the first-stage flushing is initiated based on the flushing sequence in the initial flushing control program. In the first-stage flushing parameter control, the controller can control the operation of the booster pump in the water purification equipment based on the booster pump operating parameters corresponding to the first-stage flushing in the initial flushing control program, and simultaneously control the return water valve of the water purification equipment to close, thereby performing the first-stage flushing of the pure water filter element, i.e., flushing only the raw water side of the pure water filter element.

[0075] S600: When the return water valve is turned on and the second stage of flushing begins, the initial flushing control program is modified according to the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on, so as to obtain the target flushing control program.

[0076] When the controller reaches the duration corresponding to the first stage of flushing in the initial flushing control program, it can determine that the first stage of flushing has ended and proceed to the second stage. In the second stage of flushing parameter control, the controller can first control the return water valve to open based on the initial flushing control program, thus creating a water circulation loop and flushing the product water side of the pure water filter element. However, after the return water valve is opened, the upstream water pressure of the pure water filter element, i.e., the raw water pressure on the pure water filter element, will fluctuate significantly due to the opening of the return water branch and the sudden change in water flow velocity; this is commonly referred to as water hammer. Furthermore, since the reverse osmosis membrane used in the pure water filter element is a dense polymer membrane material with a certain microstructure, it will experience compaction under water hammer, resulting in a significant decrease in the purified water flow rate of the reverse osmosis membrane filter element, indirectly shortening its service life.

[0077] Correspondingly, when the return water valve is turned on and the second stage of flushing is entered, the upstream water pressure change of the pure water filter element before and after the return water valve is turned on can be obtained first. Then, the initial flushing control program can be modified according to this change to obtain the target flushing control program. Then, the flushing control of the pure water filter element can be realized based on the target flushing control program, which can reduce the water pressure fluctuation in the two flushing stages before and after the return water valve is turned on, thereby reducing the decrease in the filter element's clean water flow rate caused by water hammer.

[0078] Specifically, the target flushing control program is a modified flushing control program, which aims to reduce water pressure fluctuations during the two flushing stages before and after the return water valve is activated. Modifying the initial flushing control program based on the upstream water pressure change of the pure water filter cartridge before and after the return water valve is activated to reduce water pressure fluctuations is not a unique method. It could involve reducing the booster pump's operating parameters to lower the raw water pressure of the pure water filter cartridge when the water pressure change is too high, or increasing the raw water pressure of the pure water filter cartridge when the water pressure change is too low.

[0079] Furthermore, while controlling the booster pump operating parameters to reduce the raw water pressure of the pure water filter element, the number of flushing cycles throughout the entire operation can also be increased to ensure the flushing efficiency of the pure water filter element; while controlling the booster pump operating parameters to increase the raw water pressure of the pure water filter element, the number of flushing cycles throughout the entire operation can also be decreased to ensure the flushing efficiency of the pure water filter element while reducing the overall running time of the flushing control program.

[0080] The number of flushing cycles throughout the entire process can be set according to actual technical needs. For example, it can be determined based on the concentration change of the protective solution in the discharged water and soaking water, or based on the effluent water quality parameters of the water purification equipment. The concentration change of the protective solution and the effluent water quality parameters can be calculated after detection by sensors. The effluent water quality parameters can specifically include the total amount and concentration of solids.

[0081] S800: Based on the target flushing control program, the booster pump and return water valve of the water purification equipment are operated to complete the flushing of the pure water filter element.

[0082] Specifically, after modifying the initial flushing control program based on the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on, and obtaining the target flushing control program, the booster pump and return water valve of the water purification equipment can be controlled to operate in sequence according to the flushing control program of each stage contained in the target flushing control program, so as to complete the flushing of the pure water filter element.

[0083] During the operation of the target flushing control program, the upstream water pressure change of the pure water filter element before and after the return water valve is turned on can be detected again at any stage when the return water valve is switched on, in order to determine whether the target flushing control program needs to be modified again to reduce the water pressure fluctuation in the two flushing stages before and after the return water valve is turned on.

[0084] The aforementioned water purification equipment flushing control method determines the operating mode of the water purification equipment. When the equipment is in flushing mode, it controls the booster pump and shuts off the return water valve based on an initial flushing control program to perform a first-stage flushing of the pure water filter element. Then, when the return water valve is opened and the second-stage flushing begins, the initial flushing control program is modified based on the upstream water pressure change of the pure water filter element before and after the return water valve is opened, resulting in a target flushing control program. Based on this target flushing control program, the booster pump and return water valve are controlled to complete the flushing of the pure water filter element. Because this application modifies the flushing control program based on the upstream water pressure change of the pure water filter element before and after the return water valve is opened during the second-stage flushing of the return water branch, it effectively reduces repeated large fluctuations in the upstream water pressure of the pure water filter element, avoiding a significant decrease in the purified water flow rate under water hammer, and ensuring that the service life of the water purification equipment is not shortened.

[0085] In one embodiment, such as Figure 4 As shown, S600 modifies the initial flushing control program based on the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on, including the following S620 to S640, wherein:

[0086] S620: If the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on is greater than the preset change in water pressure, the initial flushing control program is modified based on the first correction strategy so that the upstream water pressure of the pure water filter element is reduced after the return water valve is turned on.

[0087] The preset water pressure amplitude is a target value for the upstream water pressure difference of the pure water filter element before and after the return water valve is turned on. Under this target water pressure difference limit, it effectively avoids a significant decrease in the purified water flow rate of the pure water filter element under water hammer, and also ensures a certain water flow force when rinsing the pure water filter element, guaranteeing rinsing efficiency. It can be understood that the preset water pressure amplitude is a water pressure value greater than 0, and the specific value can be set according to actual technical needs. In this embodiment, the preset water pressure amplitude can be set to 30–60 psi (Pounds Per Square Inch), specifically 40 psi.

[0088] Specifically, if the upstream water pressure change of the pure water filter element before and after the return water valve is turned on is greater than the preset water pressure change range, it indicates that the water pressure change is too large, which may lead to a significant decrease in the purified water flow rate of the pure water filter element under the action of water hammer. Correspondingly, when the upstream water pressure change of the pure water filter element before and after the return water valve is turned on is greater than the preset water pressure change range, the initial flushing control program needs to be modified based on the first correction strategy to reduce the upstream water pressure of the pure water filter element after the return water valve is turned on, until the upstream water pressure change of the pure water filter element before and after the return water valve is turned on meets the preset water pressure change range.

[0089] In one embodiment, taking the rinsing control program as an example, which includes first-stage rinsing parameter control, second-stage rinsing parameter control, and third-stage rinsing parameter control, the rinsing control program performs rinsing control in three stages in sequence: forward flushing and concentration removal, pure water reflux rinsing, and static soaking. The first-stage rinsing, namely forward flushing and concentration removal, is used to discharge the protective liquid on the raw water side of the pure water filter element. The second-stage rinsing, namely pure water reflux rinsing, requires the continuous generation of pure water during the pure water reflux rinsing process. Therefore, the second-stage rinsing may further include forward flushing and concentration removal to discharge the protective liquid on the product water side of the pure water filter element and to enhance the discharge of the protective liquid on the raw water side. The third-stage rinsing, namely static soaking, is used to further soak and discharge the protective liquid from the pure water filter element.

[0090] It is understood that the flushing parameter control for each stage mentioned above can include the control of the booster pump operating parameters, the control of the return water conduction valve operating parameters, and the number of flushing cycles for the entire stage. The first stage flushing, the second stage flushing, and the third stage flushing are performed sequentially as one flushing cycle, and the flushing is repeated until the number of flushing cycles is reached. The protective liquid soaked in from the raw water side and the product water side is discharged through the cyclic flushing.

[0091] In one embodiment, modifying the initial flushing control program based on the first modification strategy in S620 to reduce the upstream water pressure of the pure water filter element after the return water valve is turned on includes: reducing the booster pump operating parameters in the second stage flushing parameter control of the initial flushing control program to reduce the upstream water pressure of the pure water filter element after the return water valve is turned on.

[0092] Specifically, the booster pump operating parameters include at least one of the booster pump supply voltage and the booster pump speed. Reducing the booster pump operating parameters in the second-stage flushing parameter control of the initial flushing control program can be achieved by reducing the booster pump supply voltage, reducing the booster pump speed, or simultaneously reducing both the booster pump supply voltage and the booster pump speed. In one embodiment, the booster pump operating parameters include the booster pump supply voltage and / or the booster pump speed.

[0093] Correspondingly, the booster pump operating parameters in the second-stage flushing parameter control of the initial flushing control program are reduced to lower the upstream water pressure of the pure water filter element after the return water valve is activated. This can be achieved by controlling the booster pump operating parameters to decrease gradually in preset steps until the change in upstream water pressure of the pure water filter element before and after the return water valve is activated meets the preset water pressure change range. Alternatively, the required reduction range of the booster pump operating parameters can be directly determined based on the actual difference in upstream water pressure of the pure water filter element before and after the return water valve is activated, and the correspondence between the upstream water pressure difference and the reduction range of the booster pump operating parameters. Then, based on this determined required reduction range, the booster pump operating parameters in the second-stage flushing parameter control of the initial flushing control program are controlled to decrease until the change in upstream water pressure of the pure water filter element before and after the return water valve is activated meets the preset water pressure change range.

[0094] In one embodiment, where the flushing control program also includes the number of flushing cycles, S620 further includes modifying the initial flushing control program based on a first modification strategy to reduce the upstream water pressure of the pure water filter cartridge after the return water valve is turned on, and also includes increasing the number of flushing cycles in the initial flushing control program.

[0095] Specifically, while controlling the reduction of the booster pump operating parameters to lower the raw water pressure of the pure water filter element, the water flow rate during the second stage of rinsing is reduced due to the decrease in the raw water pressure of the pure water filter element. Therefore, the number of rinsing cycles in the full-stage operation of the initial rinsing control program can be increased to ensure the rinsing efficiency of the pure water filter element.

[0096] S640: If the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on is less than the preset change in water pressure, the initial flushing control program is modified based on the second correction strategy so that the upstream water pressure of the pure water filter element increases after the return water valve is turned on.

[0097] Specifically, if the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on is less than the preset water pressure change range, it indicates that the water pressure change is relatively small. Although this will not cause a significant decrease in the purified water flow rate of the pure water filter element under water hammer, it may result in low flushing efficiency of the pure water filter element. Correspondingly, when the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on is less than the preset water pressure change range, the initial flushing control program needs to be modified based on the second correction strategy to increase the upstream water pressure of the pure water filter element after the return water valve is turned on, until the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on meets the preset water pressure change range.

[0098] In one embodiment, modifying the initial flushing control program based on the second modification strategy in S640 to increase the upstream water pressure of the pure water filter element after the return water valve is turned on includes: increasing the booster pump operating parameters in the second stage flushing parameter control of the initial flushing control program to increase the upstream water pressure of the pure water filter element after the return water valve is turned on.

[0099] Specifically, increasing the booster pump operating parameters in the second-stage flushing parameter control of the initial flushing control program to raise the upstream water pressure of the pure water filter element after the return water valve is opened can be achieved by controlling the booster pump operating parameters to increase gradually in preset steps until the change in upstream water pressure of the pure water filter element before and after the return water valve is opened meets the preset water pressure change range. Alternatively, the required increase in the booster pump operating parameters can be directly determined based on the actual difference in upstream water pressure of the pure water filter element before and after the return water valve is opened, and the correspondence between the upstream water pressure difference and the increase in booster pump operating parameters. Then, based on this determined required increase in booster pump operating parameters, the booster pump operating parameters in the second-stage flushing parameter control of the initial flushing control program are controlled to increase until the change in upstream water pressure of the pure water filter element before and after the return water valve is opened meets the preset water pressure change range.

[0100] In one embodiment, where the flushing control program also includes the number of flushing cycles, the initial flushing control program is modified in S640 based on a second modification strategy to increase the upstream water pressure of the pure water filter cartridge after the return water valve is turned on, including: reducing the number of flushing cycles in the initial flushing control program.

[0101] Specifically, while controlling the increase of the booster pump operating parameters to increase the raw water pressure of the pure water filter cartridge, the water flow rate increases during the second stage of rinsing due to the increased raw water pressure of the pure water filter cartridge. Therefore, the number of rinsing cycles in the initial rinsing control program can be reduced, ensuring the rinsing efficiency of the pure water filter cartridge while reducing the overall running time of the rinsing control program, thus achieving the goal of saving energy and avoiding excessively long rinsing time that could affect the user experience.

[0102] Furthermore, if the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on is equal to the preset change in water pressure, the initial flushing control program can be modified based on the first or second modification strategy, or the initial flushing control program can be left unchanged.

[0103] In one embodiment, before S600, the method further includes: obtaining the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on. Specifically, before modifying the initial flushing control program to obtain the target flushing control program, it is also necessary to obtain the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on. It can be understood that before and after the controller controls the return water valve to turn on, the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on can be obtained by detecting the operating parameters of the booster pump, or by adding a pressure sensor to measure the water pressure in the water path from the booster pump to the pure water filter element.

[0104] In one embodiment, such as Figure 5 As shown, the method for obtaining the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on includes the following steps S520 to S540, wherein:

[0105] S520: Obtain the first outlet pressure of the booster pump before the return water valve is turned on, and the second outlet pressure of the booster pump after the return water valve is turned on.

[0106] Specifically, the outlet pressure of the booster pump is the water pressure in the section from the booster pump to the pure water filter element, which is also the upstream water pressure of the pure water filter element. The outlet pressure of the booster pump can be obtained by adding a pressure sensor at the outlet of the booster pump, and then obtaining the outlet pressure through the controller connected to the added pressure sensor. If the booster pump itself has the ability to detect the outlet pressure, it is not necessary to add an additional pressure sensor, and the controller can obtain the outlet pressure by connecting to the booster pump.

[0107] The first outlet pressure is the pressure of the booster pump when the return water valve is closed during the first flushing stage, and the second outlet pressure is the pressure of the booster pump after the return water valve is opened during the second flushing stage.

[0108] S540: Based on the first and second outlet water pressures, obtain the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on.

[0109] Specifically, the difference or ratio between the first and second outlet pressures can be used to characterize the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on. Since both the outlet pressure of the booster pump and the upstream water pressure of the pure water filter element are essentially water pressure values, the preset water pressure range can be set to 30–60 psi, specifically 40 psi, when using the outlet pressure of the booster pump as the preset water pressure range.

[0110] In one embodiment, such as Figure 6 As shown, the method for obtaining the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on includes the following steps S560 to S580, wherein:

[0111] S560: Obtain the first operating current of the booster pump before the return water valve is turned on, and the second operating current of the booster pump after the return water valve is turned on.

[0112] Based on the characteristics of booster pumps, it is known that in a water purification system, the outlet water pressure of the booster pump is positively correlated with its operating current; that is, the higher the outlet water pressure during pump operation, the greater the operating current. Correspondingly, the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on can be obtained based on the operating current of the booster pump.

[0113] Specifically, the operating current of the booster pump can also be obtained by adding a current sensor to the booster pump equipment, and then connecting the controller to the added current sensor. If the booster pump itself has the capability to detect operating current, it is not necessary to add an additional current sensor, and the controller can obtain the operating current by connecting to the booster pump. Among them, the first operating current is the booster pump operating current corresponding to the first flushing stage when the return water valve is closed, and the second operating current is the booster pump operating current corresponding to the second flushing stage when the return water valve is open.

[0114] S580: Based on the first operating current and the second operating current, obtain the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on.

[0115] Specifically, the difference or ratio between the first operating current and the second operating current can be used to characterize the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on. When setting the preset water pressure amplitude based on the operating current of the booster pump, it can be determined based on the conversion relationship between the booster pump's outlet pressure and its operating current. For example, in this embodiment, the preset operating current amplitude can be set to 0.3-1.0A, specifically 0.5A.

[0116] The present application will be further described in detail below with reference to the accompanying drawings and a specific embodiment. It should be understood that the specific embodiment described herein is merely illustrative and is not intended to limit the scope of the application.

[0117] In one specific embodiment, the water purification device includes a pure water filter element, a booster pump, and a return water valve. The booster pump is located upstream of the pure water filter element, and the return water valve is located in the return water branch of the pure water filter element. One end of the return water branch is located upstream of the raw water inlet of the pure water filter element, and the other end is located downstream of the pure water outlet of the pure water filter element. The controller is connected to the booster pump and the return water valve to realize the flushing control of the pure water filter element.

[0118] This embodiment uses a pure water filter cartridge as an example of a reverse osmosis membrane filter cartridge for illustration. Please refer to [link / reference]. Figure 7 The water purification equipment includes a pre-filter, a reverse osmosis membrane filter, and a post-filter connected in sequence. The pre-filter includes an inlet 10 and an outlet 20; the reverse osmosis membrane filter includes a raw water inlet 30, a wastewater outlet 35, and a pure water outlet 40; and the post-filter includes an inlet 50 and an outlet 60. An inlet solenoid valve and a pressure-regulating pump are sequentially installed between the pre-filter and the reverse osmosis membrane filter to control the water inlet and pressurization, respectively. A check valve is installed between the reverse osmosis membrane filter and the post-filter to control the water flow direction. A wastewater valve is installed at the wastewater outlet 35 to control the wastewater outflow. The raw water inlet 100 allows raw water to flow in, and the pure water outlet 200 allows pure water to flow out, facilitating user access to water.

[0119] One end of the return water branch 300 is connected to the raw water inlet 30 of the reverse osmosis membrane filter element, and the interface at this end is located between the inlet solenoid valve and the pressure stabilizing pump. The other end of the return water branch 300 is connected to the pure water outlet 40 of the reverse osmosis membrane filter element, and the interface at this end is located between the reverse osmosis membrane filter element and the check valve. The return water branch 300 is also equipped with a return solenoid valve and a check valve arranged sequentially according to the water flow direction, which are used to control the opening and closing of the return water branch and to control the water flow direction, respectively. This arrangement primarily achieves the flushing of the reverse osmosis membrane filter element during pure water return flushing.

[0120] Specifically, the controller can obtain configuration operation information for the configuration operation of the water purification equipment; when the configuration operation information carries information to enter the flushing operation, it determines that the water purification equipment is in the flushing mode.

[0121] After the water purification equipment enters the flushing mode, the controller can directly reduce the power supply voltage of the booster pump to a preset multiple of the normal operating voltage. Simultaneously, it controls the opening or closing of the return water branch, reducing the water hammer pressure drop in the pure water filter cartridge's flow rate while achieving automatic flushing of the water purification equipment. It can be understood that during flushing, when the return water branch is closed and the wastewater valve is open to flush the raw water side of the pure water filter cartridge, the upstream pressure of the pure water filter cartridge is P1. When the return water branch is open and the wastewater valve is partially open to flush both the raw water and product water sides of the pure water filter cartridge, the upstream pressure of the pure water filter cartridge is P2. Because the water purification equipment repeatedly switches between the two pre-membrane pressure states of the return water branch being closed and open during flushing, this alternating high and low pre-membrane pressure causes the microstructure of the reverse osmosis membrane surface to be compacted, resulting in a significant decrease in the filter cartridge's flow rate. If the power supply voltage of the pressure stabilizing pump is reduced during the half-open period of the wastewater valve in the return water branch during the flushing process, the membrane pressure P2 during this period can be reduced, thereby reducing the decrease in filter cartridge clean water flow rate caused by water hammer effect.

[0122] The preset reduction factor for the booster pump's power supply voltage can be set according to actual technical needs. The following explanation uses a normal operating power supply voltage of 36V and a preset factor of 60%, where the booster pump's power supply voltage is reduced to 22V during the return water branch conduction phase of the flushing process. In the first stage of flushing control, the booster pump's power supply voltage is controlled at 36V, at which point P1 is approximately 40-50 psi. If, during the second stage of flushing and when the return water branch conduction phase is reached, the booster pump's power supply voltage remains at 36V, then P2 is approximately 135-145 psi. In this case, the clean water flow rate after flushing is reduced by 10% compared to before flushing. However, if, during the second stage of flushing and when the return water branch conduction phase is reached, the booster pump's power supply voltage is reduced to 22V, then P2 is approximately 80-90 psi. In this case, the clean water flow rate after flushing is reduced by 2% compared to before flushing. It is evident that by reducing the power supply voltage of the pressure stabilizing pump during the return water branch conduction phase of the water purifier during installation and flushing, the pressure before the membrane is reduced. This not only enables automatic cleaning of the water purifier during installation but also mitigates the significant decrease in water flow caused by water hammer in the system, thus extending the lifespan of the reverse osmosis membrane filter element.

[0123] After the water purification equipment enters the flushing mode, the controller can also directly control the speed of the booster pump to a preset multiple of the speed set during normal operation, and at the same time control the opening or closing of the return water branch, thereby reducing the water hammer pressure attenuation of the pure water filter cartridge and realizing automatic flushing of the water purification equipment.

[0124] The preset reduction factor for the booster pump speed can also be set according to actual technical needs. The following explanation uses a normal operating speed of 2000 rpm and a preset factor of 60%, where the booster pump speed is reduced to 1200 rpm during the return water branch connection phase of the flushing process. In the first stage of flushing control, the booster pump speed is controlled at 2000 rpm, at which point P1 is approximately 40-50 psi. If, during the second stage of flushing and when the return water branch is connected, the booster pump speed is still maintained at 2000 rpm, then P2 is approximately 130-140 psi. In this case, the clean water flow rate after flushing is reduced by 9% compared to before flushing. However, if, during the second stage of flushing and when the return water branch is connected, the booster pump speed is reduced to 1200 rpm, then P2 is approximately 80-90 psi. In this case, the clean water flow rate after flushing is reduced by 2% compared to before flushing. It is evident that by reducing the speed of the pressure-stabilizing pump during the return water branch conduction phase of the water purifier during installation and flushing, the pressure before the membrane is reduced. This not only enables automatic cleaning of the water purifier during installation but also mitigates the significant decrease in water flow caused by water hammer in the system, thus extending the lifespan of the reverse osmosis membrane filter element.

[0125] Meanwhile, the water purification equipment can also be equipped with system operating condition parameter detection devices such as pressure sensors to detect the change in water pressure upstream of the pure water filter element. The voltage and / or speed of the booster pump and the number of flushing cycles in the preset control conditions of the system can be adjusted to reduce the pressure change in front of the pure water filter element during the installation flushing of the water purification equipment. This reduces the water hammer pressure attenuation of the pure water flow of the pure water filter element while realizing automatic flushing of the water purification equipment.

[0126] The pressure sensor can be installed between the pressure stabilizing pump and the pure water filter in the water purification system. After the water purification equipment enters the installation flushing stage, the pressure sensor detects the upstream pressure values ​​P1 and P2 of the pure water filter when the return water branch is turned on or off, and calculates the difference between P2 and P1 and compares it with the set value P0.

[0127] When P2-P1>P0, the controller adjusts and reduces the booster pump's supply voltage and / or speed. This reduces the difference between P2 and P1, minimizing the decrease in purified water flow rate caused by water hammer. However, because the pre-membrane pressure P2 decreases during reverse osmosis membrane permeate flushing, the corresponding water flow rate decreases. Therefore, it is necessary to simultaneously increase the number of cycles of opening or closing the return water branch to ensure the effectiveness of the flushing process. This achieves both reducing the water hammer pressure drop in the purified water filter cartridge's flow rate and enabling automatic flushing of the water purification equipment.

[0128] When P2-P1=P0, the controller does not adjust the power supply voltage and / or speed of the booster pump;

[0129] When P2 - P1 < P0, according to experimental verification results, appropriately increasing the value of P2 can increase the water flow rate during flushing and improve flushing efficiency. Therefore, the controller can adjust and increase the power supply voltage and / or speed of the booster pump, while reducing the number of cycles of opening or closing the return water branch. This improves flushing efficiency and reduces flushing operation time.

[0130] P0 can be between 30 and 60 psi. In a specific embodiment, P0 = 40 psi.

[0131] Furthermore, based on the characteristics of booster pumps, it is known that in a water purification system, the outlet pressure of the booster pump is positively correlated with the current; that is, the higher the outlet pressure during pump operation, the greater the current. Therefore, the flushing state can be adjusted based on the detected pump current. Specifically, a current detection device can be connected to the booster pump. After the water purification equipment enters the flushing phase, the current detection device detects the pump currents I1 and I2 corresponding to the on / off states of the return water branch, and calculates the difference between I2 and I1, comparing it with the set value I0.

[0132] When I2-I1>I0, the controller adjusts and reduces the power supply voltage and / or speed of the booster pump, while increasing the number of cycles of opening and closing the return water branch. This reduces the pressure fluctuation before the pure water filter element during the installation flushing of the water purification equipment, thereby reducing the water hammer pressure attenuation of the pure water filter element's flow rate and achieving automatic flushing of the water purification equipment.

[0133] When I2-I1=I0, the controller does not adjust the booster pump's power supply voltage and / or speed;

[0134] When I2-I1<I0, the controller adjusts and increases the power supply voltage and / or speed of the booster pump, while reducing the number of cycles of opening or closing the return water branch, in order to improve the efficiency of the flushing system and reduce the running time of the flushing system.

[0135] Wherein, I0 can take a value between 0.3 and 1.0 A, and in a specific embodiment, I0 = 0.5 A.

[0136] In this embodiment, in the installed flushing mode, the fully automatic flushing program of "forward flushing and concentration removal - pure water return flushing - static soaking" is run while controlling the power supply voltage / speed of the pressure stabilizing pump in the water purification system. This achieves automatic cleaning of the water purifier while reducing the significant decrease in the water flow rate of the water purifier caused by water hammer in the system, and improving the life of the reverse osmosis membrane filter element.

[0137] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0138] Based on the same inventive concept, this application also provides a water purification equipment flushing control device for implementing the above-mentioned water purification equipment flushing control method. The solution provided by this device is similar to the solution described in the above-described method. Therefore, the specific limitations of one or more embodiments of the water purification equipment flushing control device provided below can be found in the limitations of the water purification equipment flushing control method above, and will not be repeated here.

[0139] In one embodiment, such as Figure 8 As shown, a flushing control device for a water purification equipment is provided, comprising: a determining module 10, a controlling module 20, and a correcting module 30, wherein:

[0140] Module 10 is used to determine the operating mode of the water purification equipment;

[0141] The control module 20 is used to control the operation of the booster pump of the water purification equipment based on the initial flushing control program when the water purification equipment is in the flushing mode, and to control the shut-off of the return water valve of the water purification equipment, so as to perform the first stage flushing of the pure water filter element of the water purification equipment.

[0142] The correction module 30 is used to correct the initial flushing control program based on the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on, and to obtain the target flushing control program when the return water valve is turned on and the second stage of flushing is entered.

[0143] The control module 20 is also used to control the operation of the booster pump and the return water valve based on the target flushing control program to complete the flushing of the pure water filter element.

[0144] In one embodiment, the correction module 30 is further configured to, when the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on is greater than the preset change in water pressure, correct the initial flushing control program based on the first correction strategy so that the upstream water pressure of the pure water filter element decreases after the return water valve is turned on; and when the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on is less than the preset change in water pressure, correct the initial flushing control program based on the second correction strategy so that the upstream water pressure of the pure water filter element increases after the return water valve is turned on.

[0145] In one embodiment, the flushing control program includes first-stage flushing parameter control, second-stage flushing parameter control, and third-stage flushing parameter control, wherein the second-stage flushing parameter control includes booster pump operating parameter control.

[0146] The correction module 30 is also used to reduce the booster pump operating parameters in the second stage flushing parameter control of the initial flushing control program in the first correction strategy, so as to reduce the upstream water pressure of the pure water filter element after the return water conduction valve is turned on.

[0147] The correction module 30 is also used to increase the booster pump operating parameters in the second stage flushing parameter control of the initial flushing control program in the second correction strategy, so as to increase the upstream water pressure of the pure water filter element after the return water conduction valve is turned on.

[0148] In one embodiment, the booster pump operating parameters used for correction in the correction module 30 include the booster pump power supply voltage and / or the booster pump speed.

[0149] In one embodiment, the flushing control program further includes the number of flushing cycles;

[0150] The correction module 30 is also used to increase the number of flushing cycles of the initial flushing control program in the first correction strategy and decrease the number of flushing cycles of the initial flushing control program in the second correction strategy.

[0151] In one embodiment, the above-mentioned water purification equipment flushing control device further includes:

[0152] The water pressure amplitude acquisition module is used to acquire the first outlet water pressure of the booster pump before the return water valve is turned on, and the second outlet water pressure of the booster pump after the return water valve is turned on; based on the first outlet water pressure and the second outlet water pressure, the change amplitude of the upstream water pressure of the pure water filter element before and after the return water valve is turned on is obtained.

[0153] In one embodiment, the water pressure amplitude acquisition module is further used to acquire the first operating current of the booster pump before the return water valve is turned on, and the second operating current of the booster pump after the return water valve is turned on; based on the first operating current and the second operating current, the change amplitude of the upstream water pressure of the pure water filter element before and after the return water valve is turned on is obtained.

[0154] In one embodiment, the above-mentioned water purification equipment flushing control device further includes:

[0155] The mode determination module is used to obtain the configuration operation information of the water purification equipment; if the configuration operation information includes flushing operation information, it determines that the water purification equipment is in flushing mode.

[0156] Each module in the aforementioned water purification equipment flushing control device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of the electronic device in hardware form or independent of it, or stored in the memory of the electronic device in software form, so that the processor can call and execute the corresponding operations of each module.

[0157] In one embodiment, a water purification device is provided, including a pure water filter element, a booster pump, a return water valve, and a controller. The booster pump is located upstream of the pure water filter element, and the return water valve is located in the return water branch of the pure water filter element. One end of the return water branch is located upstream of the raw water inlet of the pure water filter element, and the other end is located downstream of the pure water outlet of the pure water filter element. The controller connects the booster pump and the return water valve. The controller is used to control the operation of the booster pump and the return water valve according to the water purification device flushing control method described in any of the above embodiments, so as to achieve flushing of the pure water filter element.

[0158] In one embodiment, an electronic device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 9 As shown, this electronic device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system, computer programs, and a database. The internal memory provides the environment for the operation of the operating system and computer programs in the non-volatile storage medium. The database stores data such as the initial flushing control program, the target flushing control program, and water pressure variation. The I / O interfaces are used for information exchange between the processor and external devices. The communication interface is used for communication with external terminals via a network connection. When the computer program is executed by the processor, it implements a flushing control method for a water purification device.

[0159] In one embodiment, an electronic device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 10As shown, the electronic device includes a processor, memory, input / output interface, communication interface, display unit, and input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interface. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The input / output interface is used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it implements a flushing control method for a water purification device. The display unit is used to form a visually visible image and can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be an LCD screen or an e-ink screen. The input device of the electronic device can be a touch layer covering the display screen, or buttons, trackballs, or touchpads set on the casing of the electronic device, or external keyboards, touchpads, or mice, etc.

[0160] Those skilled in the art will understand that Figure 9 and Figure 10 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the electronic device to which the present application is applied. The specific electronic device may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements.

[0161] In one embodiment, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the method described above.

[0162] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described above.

[0163] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps of the method described above.

[0164] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data shall comply with the relevant laws, regulations and standards of the relevant countries and regions.

[0165] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0166] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0167] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A flushing control method for a water purification device, characterized in that, The method includes: Determine the operating mode of the water purification equipment; When the water purification equipment is in flushing mode, the booster pump of the water purification equipment is controlled to run based on the initial flushing control program, and the return water valve of the water purification equipment is controlled to close, so as to perform the first stage flushing of the pure water filter element of the water purification equipment. When the return water valve is opened and the second stage of flushing is initiated, if the upstream water pressure change of the pure water filter element before and after the return water valve is opened is greater than the preset water pressure change range, the booster pump operating parameters in the second stage flushing parameter control of the initial flushing control program are reduced. This is to reduce the upstream water pressure of the pure water filter element after the return water valve is opened to a level where the upstream water pressure change of the pure water filter element meets the preset water pressure change range. The number of flushing cycles in the initial flushing control program is then increased to obtain the target flushing control program. When the return water valve is opened and the second stage of flushing is initiated... In the second stage of flushing, if the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on is less than the preset water pressure change range, the booster pump operating parameters in the second stage flushing parameter control of the initial flushing control program are increased so that the upstream water pressure of the pure water filter element after the return water valve is turned on increases to the point where the change in upstream water pressure of the pure water filter element meets the preset water pressure change range, and the number of flushing cycles in the initial flushing control program is reduced to obtain the target flushing control program; the upstream water pressure of the pure water filter element is the water pressure in the water path from the booster pump to the pure water filter element section; The target flushing control program controls the operation of the booster pump and the return water valve to complete the flushing of the pure water filter element.

2. The method according to claim 1, characterized in that, The booster pump operating parameters include the booster pump power supply voltage and / or booster pump speed.

3. The method according to claim 2, characterized in that, The booster pump operating parameters in the second-stage flushing parameter control of the initial flushing control procedure include: Reduce the power supply voltage of the booster pump; and / or Reduce the speed of the booster pump; The booster pump operating parameters in the second stage flushing parameter control of the initial flushing control program include: Increase the power supply voltage of the booster pump; and / or Increase the speed of the booster pump.

4. The method according to claim 2, characterized in that, The method further includes: After the water purification equipment enters the flushing mode, the power supply voltage of the booster pump is reduced to a preset multiple of the power supply voltage during normal operation.

5. The method according to any one of claims 1 to 4, characterized in that, The methods for obtaining the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on include: Obtain the first outlet pressure of the booster pump before the return water valve is turned on, and the second outlet pressure of the booster pump after the return water valve is turned on; Based on the first outlet water pressure and the second outlet water pressure, the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on is obtained.

6. The method according to any one of claims 1 to 4, characterized in that, The methods for obtaining the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on include: The first operating current of the booster pump before the return water valve is turned on, and the second operating current of the booster pump after the return water valve is turned on are obtained. Based on the first operating current and the second operating current, the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on is obtained.

7. The method according to claim 1, characterized in that, The method further includes: Obtain the configuration and operation information of the water purification equipment; If the configuration operation information includes flushing operation information, the water purification device is determined to be in flushing mode.

8. A flushing control device for a water purification equipment, characterized in that, The device includes: The determination module is used to determine the operating mode of the water purification equipment; The control module is used to control the booster pump of the water purifier to run based on the initial flushing control program when the water purifier is in the flushing mode, and to control the return water valve of the water purifier to shut off, so as to perform the first stage flushing of the pure water filter element of the water purifier. The correction module is used to, when controlling the return water valve to open and entering the second stage of flushing, if the change in upstream water pressure of the pure water filter element before and after the return water valve is opened is greater than a preset water pressure change range, reduce the booster pump operating parameters in the second stage flushing parameter control of the initial flushing control program, so that the upstream water pressure of the pure water filter element is reduced to a level where the change in upstream water pressure of the pure water filter element meets the preset water pressure change range after the return water valve is opened, and increase the number of flushing cycles of the initial flushing control program to obtain the target flushing control program; when controlling the return water valve to open... When the second stage of flushing begins, if the change in upstream water pressure of the pure water filter element before and after the return water valve is turned on is less than the preset water pressure change range, the booster pump operating parameters in the second stage flushing parameter control of the initial flushing control program are increased. This is to raise the upstream water pressure of the pure water filter element after the return water valve is turned on to a level where the change in upstream water pressure of the pure water filter element meets the preset water pressure change range. The number of flushing cycles in the initial flushing control program is then reduced to obtain the target flushing control program. The upstream water pressure of the pure water filter element is the water pressure in the water path from the booster pump to the pure water filter element. The control module is also used to control the operation of the booster pump and the return water valve based on the target flushing control program, so as to complete the flushing of the pure water filter element.

9. A water purification device, characterized in that, The device includes a pure water filter element, a booster pump, a return water valve, and a controller. The booster pump is located upstream of the pure water filter element, and the return water valve is located in the return water branch of the pure water filter element. One end of the return water branch is located upstream of the raw water inlet of the pure water filter element, and the other end is located downstream of the pure water outlet of the pure water filter element. The controller connects the booster pump and the return water valve. The controller is used to control the operation of the booster pump and the return water valve according to any one of claims 1 to 7, so as to achieve the flushing of the pure water filter element.

10. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 7.

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

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

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