Waterway control method, water treatment system, water treatment device, and storage medium

Abstract

The application relates to the technical field of water treatment, and provides a water path control method, a water treatment system, a water treatment device and a storage medium, the method comprising the following steps: a control device detects whether a preset flushing trigger condition is met; if yes, a first-cup water flushing process is executed. The process at least comprises a first flushing sub-process and a second flushing sub-process executed in sequence. The first sub-process realizes backflow flushing and water replacement of a front filter assembly and other regions by controlling a first water inlet valve group, a first backflow valve group, a second backflow valve group and a wastewater valve group to be opened, while other related valve groups are closed and a pressure boosting assembly is started. The second sub-process forms a circulating water path to positively flush an RO filter assembly by controlling a second water inlet valve group, a circulating valve group and a wastewater valve group to be opened, while other related valve groups are closed and the pressure boosting assembly is started. The application realizes targeted and efficient flushing of multiple regions of the water treatment system by stage-by-stage and cooperative control of different valve groups, and effectively improves initial water quality.

Description

Technical Field

[0001] This application relates to the field of water treatment technology, and in particular to a water circuit control method, a water treatment system, a water treatment device, and a storage medium. Background Technology

[0002] In existing water treatment systems employing Reverse Osmosis (RO) technology, a first-cup flushing function is commonly included to ensure users receive fresh, compliant pure water upon first use after a long period of inactivity. Current common flushing solutions typically employ a single, fixed flushing path. However, due to the increasingly complex water circuit structures of modern water treatment systems, containing multiple cavities and channels with different functions and structural characteristics, the existing single flushing path approach is gradually revealing its inherent technical limitations.

[0003] Specifically, the pollution and water quality deterioration within the system are multifaceted and regional. Pre-filters may trap particulate matter and organic matter, which may breed microorganisms or dissolve after prolonged standing. The surface of the RO membrane and the concentrate side channels may accumulate salts and colloids due to osmosis. The purified water stored in the post-filter and its connected pure water pipeline will experience a slow increase in conductivity due to contact with air or material leaching. Therefore, a single, fixed-direction flushing flow is insufficient to effectively address these diverse and distributed contaminants simultaneously, often resulting in incomplete and untargeted flushing. Summary of the Invention

[0004] This application proposes a water circuit control method, a water treatment system, a water treatment device, and a storage medium, which can achieve targeted and efficient flushing of multiple areas of the water treatment system, effectively improving the initial water quality.

[0005] In a first aspect, a water circuit control method is provided, which is applied to a water treatment system, the water treatment system comprising: a first inlet valve group, a second inlet valve group, a wastewater valve group, a pre-filter assembly, a post-filter assembly, a booster assembly, an RO filter assembly, a first reflux valve group, a second reflux valve group, a circulation valve group, a water production valve group, and a control device.

[0006] The inlet of the first inlet valve group and the inlet of the second inlet valve group are connected in parallel to the raw water inlet. The outlet of the first inlet valve group is connected to the inlet of the booster assembly. The outlet of the second inlet valve group is connected to the inlet of the pre-filter assembly, and the outlet of the pre-filter assembly is connected to the inlet of the booster assembly. The outlet of the booster assembly is connected to the inlet of the RO filter assembly, and the wastewater outlet of the RO filter assembly is connected to the inlet of the wastewater valve group. The pure water outlet of the RO filter assembly is connected to the post-filter assembly. The inlet of the filter assembly is connected to the water inlet of the filter assembly, and the outlet of the post-filter assembly is connected to the inlet of the circulation valve assembly, the inlet of the water-making valve assembly, the inlet of the first return valve assembly, and the inlet of the second return valve assembly, respectively; the outlet of the circulation valve assembly is connected to the inlet of the booster assembly, the outlet of the first return valve assembly is connected to the inlet of the pre-filter assembly, and the outlet of the second return valve assembly is connected to the inlet of the first inlet valve assembly; the control device is electrically connected to each of the above valve assemblies and the booster assembly, respectively.

[0007] The waterway control method includes:

[0008] The control device detects whether the preset flushing trigger conditions are met;

[0009] If so, the control device executes the head cup water rinsing process;

[0010] The head cup rinsing process includes at least a first rinsing sub-process and a second rinsing sub-process executed sequentially.

[0011] The first flushing sub-process includes: controlling the pressurization component to start; controlling the first inlet valve group, the first return valve group, the second return valve group, and the wastewater valve group to open; and controlling the second inlet valve group, the water production valve group, and the circulation valve group to close.

[0012] The second flushing sub-process includes: controlling the pressurization component to start; controlling the second inlet valve group, the circulation valve group and the wastewater valve group to open; and controlling the first inlet valve group, the water production valve group, the first return valve group and the second return valve group to close.

[0013] In a second aspect, a water treatment system is provided, comprising: a first inlet valve group, a second inlet valve group, a wastewater valve group, a pre-filter assembly, a post-filter assembly, a booster assembly, an RO filter assembly, a first reflux valve group, a second reflux valve group, a circulation valve group, a water production valve group, and a control device.

[0014] The inlet of the first inlet valve group and the inlet of the second inlet valve group are connected in parallel to the raw water inlet. The outlet of the first inlet valve group is connected to the inlet of the booster assembly. The outlet of the second inlet valve group is connected to the inlet of the pre-filter assembly, and the outlet of the pre-filter assembly is connected to the inlet of the booster assembly. The outlet of the booster assembly is connected to the inlet of the RO filter assembly, and the wastewater outlet of the RO filter assembly is connected to the inlet of the wastewater valve group. The pure water outlet of the RO filter assembly is connected to the post-filter assembly. The inlet of the filter assembly is connected to the water inlet of the filter assembly, and the outlet of the post-filter assembly is connected to the inlet of the circulation valve assembly, the inlet of the water-making valve assembly, the inlet of the first return valve assembly, and the inlet of the second return valve assembly, respectively; the outlet of the circulation valve assembly is connected to the inlet of the booster assembly, the outlet of the first return valve assembly is connected to the inlet of the pre-filter assembly, and the outlet of the second return valve assembly is connected to the inlet of the first inlet valve assembly; the control device is electrically connected to each of the above valve assemblies and the booster assembly, respectively.

[0015] The control device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor being used to perform the steps of the above-described waterway control method.

[0016] Thirdly, a water treatment device is provided, including the aforementioned water treatment system.

[0017] Fourthly, a computer-readable storage medium is provided, the computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the above-described waterway control method.

[0018] The beneficial effects of this application are:

[0019] By breaking down the flushing process into a first flushing sub-process and a second flushing sub-process, and configuring different valve group switching combinations, two water flow paths and flushing modes are constructed. The first flushing sub-process focuses on using pure water to backflow and replace stale water in the pre-filter and its connected pipelines; the second flushing sub-process focuses on constructing a circulation path to flush the RO filter membrane pre-membrane pipeline and membrane surface at a higher flow rate. This phased and zoned targeted cleaning overcomes the limitations of a single flushing path with fixed water flow direction and range of action, enabling more thorough and comprehensive removal of contaminants and water renewal in key parts of complex water systems, thereby effectively improving the purity and freshness of the initial water flowing out of the intake. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the water treatment system provided in the embodiments of this application;

[0022] Figure 2 A schematic flowchart of the waterway control method provided in the embodiments of this application;

[0023] Figure 3 A schematic diagram of the water flow direction for the first flushing sub-process provided in this application embodiment;

[0024] Figure 4 This is a schematic diagram of the water flow direction in the explosive flushing wastewater sub-process provided in the embodiments of this application;

[0025] Figure 5 This is a schematic diagram of the water flow direction in the second flushing sub-process provided in the embodiments of this application;

[0026] Figure 6 This is a structural block diagram of the control device provided in an embodiment of this application. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0029] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0030] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0031] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustration and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0032] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a first embodiment of the water treatment system provided in this application. The water treatment system provided in this embodiment may specifically include: a first inlet valve group 11, a second inlet valve group 12, a wastewater valve group 13, a pre-filter assembly 20, a post-filter assembly 21, a booster assembly 18, an RO filter assembly 19, a first reflux valve group 15, a second reflux valve group 16, a circulation valve group 17, a water production valve group 14, and a control device. Figure 1 (Not shown in the image).

[0033] The connections between the aforementioned components include: the control device is electrically connected to the first inlet valve group 11, the second inlet valve group 12, the wastewater valve group 13, the booster assembly 18, the first reflux valve group 15, the second reflux valve group 16, the circulation valve group 17, and the water production valve group 14. The inlet of the first inlet valve group 11 serves as the raw water input port; the inlet of the first inlet valve group 11 is connected to the inlet of the second inlet valve group 12; the outlet of the first inlet valve group 11 is connected to the inlet of the booster assembly 18; the outlet of the second inlet valve group 12 is connected to the inlet of the pre-filter assembly 20; the outlet of the pre-filter assembly 20 is connected to the inlet of the booster assembly 18; the outlet of the booster assembly 18 is connected to the inlet of the RO filter assembly 19; the wastewater outlet of the RO filter assembly 19 is connected to the inlet of the wastewater valve group 13; and the outlet of the wastewater valve group 13 serves as the outlet for wastewater... The output ports are as follows: the pure water outlet of the RO filter assembly 19 is connected to the inlet of the post-filter assembly 21; the outlet of the post-filter assembly 21 is connected to the inlet of the circulation valve group 17, the inlet of the water production valve group 14, the inlet of the first reflux valve group 15, and the inlet of the second reflux valve group 16; the outlet of the circulation valve group 17 is connected to the inlet of the booster assembly 18; the outlet of the water production valve group 14 is used as the pure water output port; the outlet of the first reflux valve group 15 is connected to the inlet of the pre-filter assembly 20; and the outlet of the second reflux valve group 16 is connected to the inlet of the first inlet valve group 11. It should be noted that the booster assembly 18 has three inputs: the first input comes from the first inlet valve group 11, the second input comes from the pre-filter assembly 20, and the third input comes from the circulation valve group 17.

[0034] The control device, serving as the core of the water treatment system, is configured to execute the water circuit control method of this application. Specifically, the control device receives signals from various sensors (such as water quality detection components, level sensors, pressure switches, etc.), makes judgments based on preset program logic, and issues control commands (such as opening, closing, and adjusting the opening degree) to each valve group and booster component, thereby automatically realizing all workflows such as water production, flushing, and standby. The control device outputs high and low levels through the GPIO (General Purpose Input / Output) interface to control the opening or closing of each valve group (e.g., high level controls valve group opening, low level controls valve group closing), reads voltage / current signals sent by each sensor through an analog-to-digital converter, and controls the power or speed of the booster component 18 through PWM (Pulse Width Modulation) signals. The control device can be an MCU (Microcontroller Unit), a PLC (Programmable Logic Controller), or a dedicated control board integrating a processing unit and drive circuit; this application does not impose any limitations.

[0035] The first inlet valve group 11 and the second inlet valve group 12 jointly control the path of raw water entering the system. The first inlet valve group 11 is used to open or close an inlet bypass that bypasses the pre-filter assembly 20 and leads directly to the booster assembly 18. The second inlet valve group 12 is used to open or close the main inlet passage that passes through the pre-filter assembly 20. Through coordinated control, different water flow patterns can be achieved, such as selecting different water source paths during flushing. The first inlet valve group 11 and the second inlet valve group 12 can be solenoid valves, electric ball valves, or other electrically controlled valves.

[0036] Wastewater valve assembly 13 is connected to the wastewater inlet of RO filter assembly 19 and is used to control the discharge rate and on / off state of concentrated wastewater (i.e., "concentrate") generated during the reverse osmosis process. By adjusting its opening degree, wastewater discharge of different intensities can be achieved. Wastewater valve assembly 13 can be an adjustable proportional valve or an on / off valve, such as an electromagnetic proportional valve or an electric regulating valve.

[0037] The pre-filter assembly 20 is used to pre-treat raw water, mainly removing large particulate impurities, sediment, residual chlorine, odors, etc., to protect the subsequent RO filter assembly 19 and extend its service life. The pre-filter assembly 20 includes, but is not limited to, a housing and a combination of one or more of the following: a PP (Polypropylene) cotton filter and an activated carbon filter installed within the housing. The housing of the pre-filter assembly 20 has a certain volume for storing water.

[0038] The booster assembly 18 is used to provide pressure for the water flow, especially to provide the necessary operating pressure for the normal operation of the RO filter assembly 19 (overcoming osmotic pressure). The booster assembly 18 is typically a booster pump, such as a centrifugal pump or a plunger pump.

[0039] The RO filter module 19 is the core purification unit of the system. It uses a reverse osmosis (RO) membrane to filter pressurized water, effectively removing most dissolved solids, heavy metals, bacteria, viruses, etc., producing pure water (permeate) and wastewater (concentrated water). The RO filter module 19 mainly consists of RO membrane elements, which are usually encapsulated in a membrane housing and have an inlet, a pure water outlet, and a wastewater outlet.

[0040] The post-filtration assembly 21 is used to further treat the pure water produced by the RO filtration assembly 19, improving its taste or performing a final antibacterial treatment. The post-filtration assembly 21 may include a housing and an activated carbon post-filter, an ultraviolet sterilizer, or a mineralization filter installed inside the housing.

[0041] The first reflux valve assembly 15 and the second reflux valve assembly 16 together form a pure water reflux path, used to return a portion of the pure water to the front end of the system during flushing and other modes. The first reflux valve assembly 15 leads pure water to the inlet of the pre-filter component 20 for flushing the pre-filter media. The second reflux valve assembly 16 leads pure water to the raw water inlet at the very front of the system, achieving a more thorough system circulation flushing. The first reflux valve assembly 15 and the second reflux valve assembly 16 can be electrically controlled valves such as solenoid valves.

[0042] The circulation valve assembly 17 is used to control whether pure water flows back to the inlet of the booster assembly 18. When open, it allows pure water to circulate on the high-pressure side of the system (before the RO membrane) for rinsing the RO membrane surface or for water recirculation. The circulation valve assembly 17 can be an electrically controlled valve such as a solenoid valve.

[0043] The water valve assembly 14 is used to control the output of purified water to the water-using terminals (such as faucets or water storage tanks). The water valve assembly 14 can be an electrically controlled valve such as a solenoid valve.

[0044] It should be noted that the "valve assembly" referred to in this application can be a single valve or a combination of multiple valves connected in parallel or in series.

[0045] To achieve the aforementioned head cup rinsing process, the control device performs the following operations sequentially according to a predetermined program logic. Its core lies in coordinating the on / off states of multiple valve groups and the activation / deactivation of the pressurization component 18 to create two different water flow paths and rinsing modes within the system, effectively rinsing different sections accordingly. The specific working process of the water treatment system includes:

[0046] After detecting that the preset flushing trigger conditions are met, the control device first executes the first flushing sub-process.

[0047] See Figure 3 As shown, Figure 3 This is a schematic diagram of the water flow direction in the first flushing sub-process. Figure 3 The bolded portion indicates the pipeline through which the water flows. At this stage, the control device aims to create a loop that reverses the water flow through the pre-filter assembly 20 and ultimately discharges the flushing wastewater. The control device drives the first inlet valve group 11 to the open state, allowing raw water to enter. Simultaneously, the control device drives the first return valve group 15 and the second return valve group 16 to the open state, and also drives the wastewater valve group 13 to the open state to provide a wastewater discharge outlet. To ensure the water flows along a predetermined path, the control device synchronously drives the second inlet valve group 12, the water production valve group 14, and the circulation valve group 17 to the closed state. After completing the valve group configuration, the control device sends a start command to the booster assembly 18 to begin operation. At this time, unfiltered raw water flows in through the first inlet valve group 11, is pressurized by the booster assembly 18, and enters the RO filter assembly 19. The resulting pure water, after passing through the post-filter assembly 21, partially flows back through the open first return valve group 15 and gradually fills the internal space of the pre-filter assembly 20. Another portion flows back to the raw water inlet at the very front of the system through the opened second reflux valve group 16. Wastewater generated by the RO filter assembly 19 and impurities flushed from the pre-filter assembly 20 are discharged from the system through the opened wastewater valve group 13. This sub-process continues for a preset time, or until a stop signal is received, such as when the pre-filter assembly 20 is full. It should be noted that, to avoid short-circuiting the water flow, this application allows for time-sharing control of the opening of the first inlet valve group and the second reflux valve group in the first flushing sub-process.

[0048] After completing the first rinsing sub-process, the control device then executes the second rinsing sub-process. (See also...) Figure 5 As shown, Figure 5 This is a schematic diagram of the water flow direction in the second flushing sub-process. Figure 5 The bolded part indicates the pipe through which the water flows.

[0049] At this stage, the control objective of the control device shifts to establishing a loop that allows water to circulate positively between the booster assembly 18 and the RO filter assembly 19, flushing the pre-RO membrane piping at a high flow rate. The control device drives the first inlet valve group 11, the water purification valve group 14, the first return valve group 15, and the second return valve group 16 to the closed state. Simultaneously, the control device drives the second inlet valve group 12, the circulation valve group 17, and the wastewater valve group 13 to the open state. Subsequently, the control device maintains the operation of the booster assembly 18 or issues a start command again. At this time, raw water enters through the second inlet valve group 12, and the resulting flow thrust pushes out the pure water already stored in the pre-filter assembly 20. This mixed water flow flows sequentially through the pre-filter assembly 20 and is then pressurized by the booster assembly 18. The pressurized water flows into the RO filter assembly 19 to flush the RO membrane, and the resulting wastewater is discharged through the open wastewater valve group 13. The resulting pure water flows through the post-filter assembly 21 and then returns to the inlet of the booster assembly 18 via the opened circulation valve group 17, thus forming a circulating flushing loop on the high-pressure side before the RO filter assembly 19. This loop effectively flushes the surface of the RO membrane and the corresponding pipelines, carrying away any potentially accumulated contaminants and discharging them through the wastewater valve group 13. This sub-process continues for a preset duration or until specific water quality conditions are met.

[0050] In one possible embodiment, the water treatment system further includes: a first check valve assembly 22, a second check valve assembly 23, and a third check valve assembly 24. The inlet of the first check valve assembly 22 is connected to the outlet of the first return valve assembly 15, and the outlet of the first check valve assembly 22 is connected to the inlet of the pre-filter assembly 20. The inlet of the second check valve assembly 23 is connected to the outlet of the second return valve assembly 16, and the outlet of the second check valve assembly 23 is connected to the inlet of the first inlet valve assembly 11. The inlet of the third check valve assembly 24 is connected to the inlet of the circulation valve assembly 17, and the outlet of the third check valve assembly 24 is connected to the inlet of the booster assembly 18.

[0051] The first one-way valve assembly 22 is located on the pipeline between the outlet of the first return valve assembly 15 and the inlet of the pre-filter assembly 20. Its main function is to establish and maintain a one-way water flow channel from the first return valve assembly 15 to the pre-filter assembly 20. Specifically, in operating conditions such as the first flushing sub-process where pure water needs to be reinjected into the pre-filter assembly 20, it allows water to flow smoothly. More importantly, it effectively prevents backflow of water (which may contain high concentrations of contaminants) in the pre-filter assembly 20 and upstream pipelines when the system pressure changes, avoiding its reverse flow into the relatively clean post-filter assembly 21 and the pure water circuit. This ensures that the quality of the returned pure water is not contaminated and guarantees the directionality and effectiveness of the flushing process.

[0052] The second one-way valve assembly 23 is located on the pipeline between the outlet of the second return valve assembly 16 and the inlet of the first inlet valve assembly 11 (i.e., the main raw water inlet of the system). Its core function is to ensure that water can only flow unidirectionally from the second return valve assembly 16 towards the external raw water inlet of the system. This has two key functions: first, it ensures smooth water flow in conditions such as the second flushing sub-process, where the returned pure water needs to be discharged towards the inlet; second, it strictly prevents external raw water or other fluids from the system inlet (in non-returning conditions) from seeping back into the second return valve assembly 16 and subsequent pure water pipelines through this path, thereby isolating the risk of external contamination and maintaining the water quality cleanliness of the internal pure water circuit of the system.

[0053] The third one-way valve assembly 24 is located on the pipeline between the outlet of the circulation valve assembly 17 and the inlet of the booster assembly 18. Its core function is to establish a forced unidirectional flow order in the circulation flushing circuit. When the circulation valve assembly 17 is open, it allows pure water flowing from the post-filter assembly 21 to flow smoothly to the inlet of the booster assembly 18 to participate in the circulation flushing. Crucially, it prevents pressurized water from the inlet side of the booster assembly 18 (where multiple water sources, such as the outlet of the pre-filter assembly 20, may be connected) from flowing back into the circulation valve assembly 17 and the post-pure water circuit when the circulation valve assembly 17 is closed or the system pressure fluctuates. This avoids cross-mixing of different water sources, ensures the purity of the circulating water circuit, and protects the pure water side of the post-filter assembly 21 and the RO filter assembly 19 from potential upstream contamination.

[0054] Each of the aforementioned check valve assemblies can be a single check valve or a combination of multiple check valves connected in series or parallel to adapt to flow rate or provide redundancy. The specific valve type can be a mechanical check valve, such as, but not limited to, spring-loaded check valves, swing check valves, or lift check valves.

[0055] Based on this, see Figure 2 The diagram shown is a flowchart of a waterway control method provided in this application, which specifically includes the following steps:

[0056] S1. The control device detects whether the preset flushing trigger conditions are met.

[0057] In step S1, the control device continuously or periodically monitors and judges the system status or external signals to determine whether a head cup rinsing process needs to be initiated. This judgment is based on one or more preset rinsing trigger conditions, which are pre-set and stored in the non-volatile memory of the control device.

[0058] The internal processing of the control device involves reading data from relevant sensors or modules, accessing internal timers, and parsing received communication commands. Specifically, the control device may read the voltage signal from the water quality sensor through its analog-to-digital converter port and convert it into a total dissolved solids value; capture the switch signal from the liquid level sensor through the digital input port; obtain the system time and timing duration through the real-time clock module; or receive command data sent by the user or host computer through communication interfaces such as infrared receivers, button circuits, and network modules. The control device compares and performs logical operations on the real-time acquired data or status with preset thresholds, periods, or command types. When any preset trigger condition is met, the control device's program logic generates a definite "met" flag, thus proceeding to step S2. If the control device determines that the flushing trigger condition is not met, the detection continues.

[0059] For example, one of the preset flushing trigger conditions is that "the system switches from standby to wake-up mode, and the standby duration exceeds a time threshold." Under this condition, the control device first needs to maintain a system state machine, which includes "standby state" and "wake-up state." When the control device exits standby mode due to user water dispensing, it reads the duration of the current standby from non-volatile memory and compares it with a preset eight-hour threshold. If the standby duration exceeds eight hours, the trigger condition is deemed met.

[0060] Another trigger condition is "the total dissolved solids (TDS) value output from the RO filter assembly's pure water outlet exceeds the water quality threshold." To achieve this determination, a water quality monitoring component installed on the pure water pipeline continuously measures the water's conductivity and converts it into a TDS value signal, which is then sent to the control device. The control device compares the received real-time TDS value with a preset threshold of 20 mg / L. Once the real-time TDS value exceeds this threshold, the trigger condition is deemed met.

[0061] S2. If yes, the control device executes the head cup water rinsing process.

[0062] In step S2, once the control device determines that any flushing trigger condition is met, it automatically calls and sequentially executes the program module for the head cup flushing process. This process is designed to include at least two sub-processes that are either continuous or discontinuous in time and distinct in valve configuration and water path: the first flushing sub-process and the second flushing sub-process. The control device operates the opening or closing of each valve group by outputting high-level or low-level control signals to the drive circuit of each valve group, and controls the start and stop of the pressurization component through the motor drive circuit.

[0063] During the first flushing sub-process, the control signals output by the control device activate the drive circuits of the first inlet valve group, the first return valve group, the second return valve group, and the wastewater valve group, while simultaneously deactivating the drive circuits of the second inlet valve group, the water production valve group, and the circulation valve group. After the valve group state switching is completed or after a predetermined delay, the control device outputs a signal to activate the pressurization component. The water path formed at this time allows the pure water produced by the RO filter component to be injected back into and stored in the pre-filter component, achieving cleaning and replacement of that part.

[0064] After completing the first flushing sub-process, the control device switches to the second flushing sub-process. At this time, the control device changes its output signal combination, switching to activate the drive circuits of the second inlet valve group, circulation valve group, and wastewater valve group, while disconnecting the drive circuits of the first inlet valve group, water production valve group, and the first and second return valve groups. The booster assembly remains running or restarts after a short interval. This configuration creates a water path that pushes the raw water and the pure water stored in the pre-filter assembly into the high-pressure side of the system for forward flushing of the RO filter assembly's pre-membrane piping and membrane surface.

[0065] For example, if the trigger condition is "receiving a flushing command from the user," the control device, upon receiving the command signal via the panel buttons, immediately begins the first cup flushing process. First, it executes the first flushing sub-process: the control device sets its input / output ports connected to the first inlet valve group, first return valve group, second return valve group, and wastewater valve group to output a high level, and sets its ports connected to the second inlet valve group, water-making valve group, and circulation valve group to output a low level. It then sends a start signal to the relay control terminal of the booster assembly. After this state is maintained for 60 seconds, the control device switches to the second flushing sub-process: it sets the ports connected to the first inlet valve group, water-making valve group, first return valve group, and second return valve group to a low level, and sets the ports connected to the second inlet valve group, circulation valve group, and wastewater valve group to a high level, allowing the booster assembly to continue operating. After this state is maintained for another 90 seconds, the entire first cup flushing process ends, the control device closes all valve groups and the booster assembly, and the system enters a ready state.

[0066] In one possible embodiment, S1, the control device detects whether a preset flushing trigger condition is met, including:

[0067] S11. When the water treatment system is detected to have switched from standby to wake-up mode and the standby time exceeds a time threshold, it is determined that the preset flushing trigger condition is met; or

[0068] S12. When the total dissolved solids (TDS) value output from the pure water outlet of the RO filter assembly exceeds the water quality threshold, it is determined that the preset flushing trigger condition is met; a water quality detection component is installed in the pipeline of the pure water outlet of the RO filter assembly, and the water quality detection component is used to detect the TDS value of the water in the pipeline; or

[0069] S13. Upon receiving a flushing command from the user, determine that the preset flushing trigger conditions are met; or

[0070] S14. When the preset flushing cycle is detected, determine that the preset flushing trigger condition is met.

[0071] In step S11, the control device maintains a system status flag to distinguish between "standby state" and "wake-up state." Standby state typically refers to a mode where the main water circuit is closed, and only the control device operates at low power. When the control device switches to the fully functional "wake-up state" via an external interrupt (such as a button signal) or an internal timed wake-up event, its program logic immediately accesses the standby start timestamp stored in non-volatile memory. The control device calls its internal clock function to calculate the difference between the current time and the stored timestamp, thus obtaining the precise standby duration. This duration value is compared with a pre-set duration threshold stored in the control device's memory. If the calculated standby duration exceeds the threshold, the logic judgment unit inside the control device outputs a true value, confirming that the flushing trigger condition is met.

[0072] For example, the system's set time threshold is eight hours. When the user turns off the water tap at 10 PM the previous night, the control device records that time and enters standby mode. At 7 AM the next morning, if the user touches any button on the machine panel again, the control device is immediately awakened and switches to working mode. After waking up, the control device immediately reads the timestamp of 10 PM from the memory and calculates it with the current time, determining that the standby time is nine hours. Since nine hours is greater than the preset threshold of eight hours, the control device determines that the rinsing trigger condition is met and prepares to start the first cup rinsing process.

[0073] It should be noted that this application may determine a reasonable duration threshold based on one or more of the following methods, combined with specific product design goals.

[0074] 1. Determined based on experimental data on the water quality degradation law.

[0075] This is the most direct and objective setup method. Data is obtained through the following experimental steps:

[0076] After the water treatment system is working normally and producing qualified pure water, it is put into standby mode.

[0077] In standby mode, simulate or maintain static conditions in the water circuit within the system. Take samples from the water inlet at fixed intervals (e.g., every hour) and measure the total dissolved solids value of the water samples using precision instruments (such as a laboratory conductivity meter).

[0078] Record the curve of TDS value increasing over time. Set the time corresponding to the TDS value reaching the preset "not for direct consumption" warning value (e.g., from the initial ≤10 mg / L to >20 mg / L) as the reference benchmark for the duration threshold.

[0079] Based on this baseline time, a certain safety margin can be reserved (for example, setting the threshold to 80% of the baseline time) to ensure that the system has automatically completed rinsing before the user takes water, and that the faucet always dispenses fresh and compliant pure water.

[0080] 2. Determined based on statistical analysis of typical user habits.

[0081] This method focuses on adapting to the user's actual lifestyle.

[0082] Market research or analysis of usage data from similar products can help understand the typical intermittent usage cycles of drinking water equipment in homes or offices. For example, data shows that nighttime sleep (approximately 8-10 hours without water usage) is the most common long-term standby scenario.

[0083] Set the duration threshold to cover the most common scenarios, such as 8 or 10 hours. This ensures that users get freshly rinsed water the first time they use the water in the morning or after a long day away from home.

[0084] 3. Determined by combining the internal cavity volume of the system with the flushing efficiency.

[0085] This method starts from the physical characteristics of the system itself.

[0086] Calculate or measure the total static water volume contained in all pipes and internal filtration components (such as post-filters) from the pure water outlet of the RO filter unit to the water tap.

[0087] Based on the design flow rate and time of the first and second flushing sub-processes, the flushing time required to completely replace this portion of static water is estimated.

[0088] The logic behind setting the time threshold to a multiple (e.g., 2-3 times) greater than the replacement time is that if the standby time is shorter than the replacement time, flushing is not very meaningful; if the standby time is much longer than the replacement time, the risk of water quality deterioration increases significantly, and it is necessary to start flushing.

[0089] In step S12, a water quality detection component, typically a conductivity sensor, is installed on the pure water outlet pipe of the RO filter assembly. This sensor converts the physical quantity of water conductivity into a linear analog voltage signal. The analog-to-digital converter port of the control device continuously reads this voltage signal at a certain sampling period and converts it into a total dissolved solids (TDS) value using a preset calibration curve. The control device cyclically compares the real-time calculated TDS value with a preset water quality threshold. This water quality threshold represents the upper limit of the pure water quality suitable for direct drinking. Once the real-time TDS value exceeds this threshold during continuous signal processing, the control device generates a trigger flag, indicating that the flushing conditions based on water quality deterioration have been met.

[0090] For example, the preset water quality threshold is 20 milligrams per liter. During system operation, the RO membrane may experience slight salt permeation due to temporary shutdown, causing a slow increase in the conductivity of the pure water. The water quality detection component continuously monitors this change and transmits the signal to the control device. The control device's internal program calculates the current TDS value every second. When a calculation shows that the TDS value reaches 25 milligrams per liter, since this value exceeds the 20 milligrams threshold, the control device immediately determines that the water quality no longer meets the drinking water requirements, thereby triggering a flushing process to refresh the water in the pipeline.

[0091] It should be noted that this application may determine the water quality threshold based on one or more of the following methods.

[0092] 1. Determined based on national or industry drinking water hygiene standards.

[0093] This is a fundamental method for ensuring water quality safety. The limits or guidelines for "Total Dissolved Solids" (TDS) in the national "Standards for Drinking Water Quality" can be directly cited or referenced. For example, the standard may stipulate a TDS limit of ≤ 1000 mg / L for drinking water, while having stricter practical expectations for purified water. Therefore, a water quality threshold can be set as a safe proportion of the relevant limit in the standard, such as ≤ 50 mg / L or ≤ 20 mg / L, as a warning line for initiating flushing to restore high-purity water quality. This method ensures that the implementation of the technology complies with legal safety standards.

[0094] 2. Determination of sensory thresholds based on user taste experience.

[0095] This method focuses on maintaining a pleasant taste in drinking water. Excessively high TDS values ​​(especially elevated concentrations of specific ions) can lead to a bitter or dull taste. This can be determined through the following sensory tests:

[0096] Prepare a series of pure water samples with different known TDS values ​​(e.g., from 5 mg / L to 100 mg / L, increasing in a gradient).

[0097] Organize a certain number of tasters to conduct blind tests and record the range of TDS values ​​at which they can clearly perceive the beginning of taste deterioration (such as the appearance of obvious off-flavors or a decline in taste).

[0098] Based on statistical analysis, the upper limit of TDS value considered acceptable to most tasters is set as the water quality threshold. For example, experiments may show that most users can perceive a difference in taste when the TDS value exceeds 25 mg / L. Therefore, the water quality threshold can be set at 20 mg / L to trigger rinsing before significant deterioration in taste.

[0099] 3. Determined based on the percentage decay method of the initial system performance.

[0100] This method is directly linked to the factory performance of a specific water treatment system, enabling personalized settings.

[0101] After a new RO membrane is installed or replaced in the water treatment system, once the system is running stably, record the TDS value output from the pure water outlet of the RO filter component under standard test conditions, and record it as the baseline value T0 (for example, T0 = 5 mg / L).

[0102] Set an allowable performance degradation percentage K (e.g., K = 80%). This means that a maintenance flush is triggered when the pure water quality degrades to 80% of its initial performance.

[0103] The water quality threshold T_threshold can be calculated using the formula: T_threshold = T0 / (K / 100). Taking the above value as an example, T_threshold = 5 / (0.8) = 6.25 mg / L, which can be approximately set to 6 mg / L. This method dynamically correlates with the system's own state, making the triggering condition more precise.

[0104] In step S13, the system provides the user with at least one interactive interface for initiating a manual flushing command. This interface can be a physical button, a virtual button on a touchscreen, a remote control, or a mobile application connected to the home network. When the user operates through any of these interfaces, a specific digital signal or data packet is sent to the corresponding input port or communication interface of the control device. The control device's interrupt service routine or communication protocol parsing routine captures this signal and decodes it according to a predefined instruction code. If the decoding result confirms a valid "flushing command," the control device directly sets the corresponding trigger condition fulfillment flag without needing to perform other time or threshold checks.

[0105] For example, the control panel of a water treatment device has a physical button labeled "Flush". This button is directly connected to a general-purpose input / output port with interrupt functionality in the control unit. When the user presses and holds the button for three seconds, a low-level pulse signal triggers an external interrupt in the control unit. In the interrupt service routine, the control unit detects that the signal comes from a preset "Flush Command" port and that the duration meets the requirements. It then immediately confirms that a valid user flush command has been received and prepares to execute the subsequent flushing process.

[0106] In step S14, during the initialization procedure of the control device, a timer for recording the rinsing cycle is set and starts running. This cycle can be a fixed time interval or a specific time point based on the calendar. During its operation, the control device continuously compares the currently accumulated running time or real-time clock information with the preset cycle value. When the preset cycle node is reached, for example, when the accumulated running time reaches 72 hours, or when the clock strikes 3:00 AM daily, the timer generates an overflow interrupt or generates a cycle arrival event in the main loop. The control device responds to this event and determines that the rinsing trigger condition based on the time cycle is met.

[0107] For example, the system is preset to automatically perform a maintenance flush every three days. The control device has an internal real-time clock module, set to a three-day flushing cycle. The control device begins a countdown from the completion of the last flush. When the seventy-two-hour cycle is complete, the real-time clock module sends a flag signal to the control device's main program. Upon detecting this signal, the control device determines that the preset flushing cycle has been reached and, regardless of the current water quality or whether it is in standby mode, will initiate a first-cup flush.

[0108] It should be noted that the method for determining the duration of the rinsing cycle in this application includes one or more of the following.

[0109] 1. Determined based on experimental data on the performance maintenance of key filtering components.

[0110] This method aims to slow down the performance degradation of core components such as the RO filter module through regular flushing. A cycle baseline can be established through the following experiments:

[0111] In the laboratory, typical water quality (such as raw water with TDS of 300 mg / L) and typical operating conditions (such as producing 50 liters of water per day) were simulated, allowing the system to operate continuously without performing periodic flushing.

[0112] Regularly (e.g., every 48 operating hours) test the stable TDS value of the system's produced water under standard conditions and record its change curve over time.

[0113] Determine an acceptable critical point for permeate water quality degradation (e.g., permeate TDS increases from an initial 5 mg / L to 10 mg / L). Observe the cumulative operating time corresponding to reaching this critical point.

[0114] Set the flushing cycle to a fraction (e.g., 1 / 3 or 1 / 4) significantly shorter than this cumulative operating time to effectively intervene through flushing and maintain long-term stability of system performance before significant performance degradation occurs. For example, if experiments show that the TDS in the permeate rises to 10 mg / L after approximately 300 hours of operation, the flushing cycle can be set to 72 hours (approximately 3 days).

[0115] 2. Experimental determination based on the stability of water quality in pipelines and containers.

[0116] This method focuses on ensuring the quality of pure water retained in the pipeline and post-filtration components between the last water intake and the next water intake.

[0117] After the system completes a thorough flush and produces fresh water, it is simulated to enter a static water-retaining state.

[0118] Regularly test the TDS value of the water stored at the water intake and plot its increase over time (e.g., within a few days to a week).

[0119] The time required to reach the TDS threshold is determined based on a preset threshold that "the stored water is not suitable for direct drinking" (e.g., an increase of more than 15 mg / L from the initial value).

[0120] Set the flushing cycle to a shorter time to ensure that the system can automatically replenish the internal water supply even if the user does not use water for an extended period. For example, if testing reveals that the TDS of the stored water exceeds the standard after standing for 96 hours (4 days), the flushing cycle can be set to 48 hours (2 days).

[0121] 3. Determining the reliability of water usage intervals based on statistics of users.

[0122] This method is designed to suit the usage habits of most users, ensuring that the system can automatically perform maintenance during the longest possible waterless interval for the user.

[0123] Market research or data analysis can be used to determine the typical water usage intervals of the target user group. For example, data may show that 95% of users use the device at least once a day, but there may be periods during holidays when the device remains unused for 3-4 consecutive days.

[0124] To cover most usage scenarios and leave a margin for error, the flushing cycle can be set slightly shorter than the statistically derived "common longest waterless interval". For example, for the above scenario, the cycle can be set to 48 hours to ensure that even after two consecutive days without water use, the system can automatically start a maintenance flush to maintain the freshness of the internal water quality.

[0125] In one possible embodiment, the method further includes:

[0126] S3. The control device executes the explosive flushing wastewater sub-process after executing the first flushing sub-process and before executing the second flushing sub-process.

[0127] The wastewater flushing sub-process includes: controlling the wastewater valve group to open and adjusting the opening degree of the wastewater valve group to a preset maximum opening degree; controlling the pressurization component to start; and controlling the first inlet valve group, the second inlet valve group, the water production valve group, the first return valve group, the second return valve group, and the circulation valve group to close.

[0128] In step S3, after the first flushing sub-process is completed, the control device does not immediately start the second flushing sub-process, but instead inserts a dedicated burst flushing wastewater sub-process.

[0129] See Figure 4 As shown, Figure 4 This is a schematic diagram of the water flow direction in the wastewater sub-process of the explosive flushing. Figure 4 The bolded part indicates the pipeline through which the water flows.

[0130] The core control logic of this sub-process is to establish a high-pressure, high-flow-rate unidirectional wastewater discharge state instantly inside the RO filter component by adjusting the wastewater valve group to the maximum opening and starting the booster component, while isolating all inlet and return paths.

[0131] The control device operates according to strict timing logic. First, it drives all the open valve groups (first inlet valve group, first return valve group, second return valve group, and wastewater valve group) in the first flushing sub-process to the closed state, while ensuring that the second inlet valve group, water production valve group, and circulation valve group remain closed. After confirming the closure of all valve groups, the control device performs two key and nearly synchronous operations: first, it sends a specific control signal (e.g., a pulse width modulation signal with a specific duty cycle or a fixed high-level voltage) to the drive circuit of the wastewater valve group, corresponding to the maximum stroke position of its opening adjustment mechanism, thereby instantly adjusting its opening to the preset maximum opening; second, it sends a start signal to the drive circuit of the booster component, causing it to restart or continue high-speed operation. At this time, the water circuit state formed in the system is such that all the pressure generated by the booster component acts almost exclusively on the RO filter component, driving the high-concentration wastewater remaining in the inner cavity and membrane surface of the component to be forcefully flushed out through the fully open wastewater valve group at the highest flow rate and flow rate allowed by the system. The control device maintains this state for a preset or calculated burst duration, then closes the pressurization component and wastewater valve group to complete this sub-process, and then enters the second flushing sub-process.

[0132] For example, the preset flushing duration is 15 seconds, and the maximum opening of the wastewater valve assembly corresponds to a 10V DC voltage for its adjustment signal. When the first flushing sub-process ends, the control device closes all valve assemblies. Subsequently, the control device outputs 10V to the control port of the wastewater valve assembly, causing its valve core to rotate or move to the maximum opening position. Almost simultaneously, the control device sends a closing command to the relay of the booster pump, and the booster pump starts at its rated power. For the next 15 seconds, only a single high-speed water flow exists within the system, from the booster pump to the RO membrane housing and then to the wastewater discharge outlet, violently flushing out the high TDS wastewater and any potentially precipitated slightly soluble salts accumulated on the RO membrane concentrate side in the previous stage. After 15 seconds, the control device stops outputting 10V (the wastewater valve assembly may reset to its default opening) and disconnects the power supply to the booster pump, ending the flushing wastewater sub-process.

[0133] Furthermore, to ensure the intensity and reliability of the flushing, this application can introduce a pressure detection and judgment mechanism. Specifically, a pressure sensor can be installed in the pipeline between the outlet of the booster component and the inlet of the RO filter component, or directly on the housing of the RO filter component. This pressure sensor is used to detect the water pressure on the high-pressure side of the system in real time and feed its signal back to the control device.

[0134] The control device first opens the wastewater valve assembly to its maximum opening and closes all inlet and return valve assemblies. Then, the control device activates the booster assembly and begins real-time reading of the pressure sensor signals. The control device compares the detected real-time pressure value with a preset pressure threshold. This pressure threshold represents the minimum operating pressure required to ensure high-speed flushing of wastewater and effective scouring of the RO membrane surface. The pressure threshold is determined primarily based on the minimum transmembrane pressure difference required for effective operation of the RO filtration assembly in the water treatment system and the kinetic energy required to ensure high-speed flushing of wastewater through the pipeline. This threshold is typically set slightly higher than the minimum operating pressure of the RO membrane under flushing conditions and lower than the system's safe pressure limit. Specific values ​​can be determined experimentally: with the valve assembly configuration of the flushing wastewater sub-process, the output of the booster assembly is gradually adjusted, and the corresponding wastewater flow rate is measured. The minimum stable pressure value that ensures the formation of a high-speed turbulent flushing effect is set as the pressure threshold, for example, a value between 0.35 MPa and 0.6 MPa.

[0135] The system is only considered to have entered a sufficient pressure state when the control device confirms that the real-time pressure value has reached or exceeded the preset pressure threshold, and then begins to calculate the effective execution time of the wastewater flushing sub-process. If the pressure fails to reach the threshold within a preset time after the booster component is started, the control device can determine that it is abnormal (such as pump failure or serious leakage), and interrupt the sub-process, issue a fault alarm, or enter standby mode.

[0136] For example, the preset pressure threshold is 0.4 MPa. In the wastewater flushing sub-process, after the control device opens the wastewater valve group and starts the booster pump, it continuously monitors the pressure value. If the pressure rises and stabilizes at 0.45 MPa within 3 seconds, the control device starts a 30-second flushing timer. If the pressure remains below 0.35 MPa, the control device stops the booster pump, closes the wastewater valve group, and illuminates the fault indicator light after 5 seconds of testing.

[0137] The technical effects of this embodiment are mainly reflected in two aspects: First, it can perform a high-intensity, short-duration "hydraulic cleanup" inside the RO filter component between the two main flushing stages, specifically targeting and efficiently discharging high concentrations of pollutants and scale ions that may be flushed to the membrane surface and concentrate chamber during the first flushing sub-process, preventing them from re-attaching or depositing; Second, by rapidly depressurizing and draining water at maximum opening, it can effectively eliminate the water hammer effect in the system pipeline and create favorable conditions for the subsequent second flushing sub-process with lower initial pressure and easier water flow circulation.

[0138] In one possible embodiment, a liquid level sensor is provided in the pre-filtration assembly of the water treatment system;

[0139] The method further includes:

[0140] If the control device receives a full water signal from the liquid level sensor during the execution of the first rinsing sub-process, it will stop executing the first rinsing sub-process.

[0141] This step relies on the control device's real-time monitoring of the liquid level within the pre-filter assembly and its coordinated control with the rinsing process. A level sensor is installed inside the pre-filter assembly or at a specific height within its connected cavity to detect the water level within the assembly. The level sensor can be a float-type level switch, a capacitive level sensor, a pressure switch, or a photoelectric level sensor. During the first rinsing sub-process, the control device continuously monitors the status of the input port connected to the level sensor. When the level sensor detects that the water level has reached a preset "full" position, it actively or passively changes the state of the electrical signal output to the control device.

[0142] The control device's program continuously reads the status of the input port in the main loop or interrupt service routine. When the read signal changes from a state representing "not full" (e.g., high level) to a specific state representing "full" (e.g., low level), the control device's logic judgment unit immediately recognizes this event. Once this "full" signal is confirmed, the control device immediately calls the process interrupt handling routine. This routine first sends a stop command to the booster component's drive circuit, cutting off the pressurized water supply. Immediately afterwards, the control device, according to a preset safety sequence, drives all valve groups in the first flushing sub-process that are in the open state—namely, the first inlet valve group, the first return valve group, the second return valve group, and the wastewater valve group—to the closed state. After completing the above operations, the control device exits the first flushing sub-process and, according to the preset program logic, decides whether to directly end the entire flushing process, skip subsequent steps and enter standby mode, or immediately proceed to the next stage.

[0143] For example, the pre-filter assembly uses a normally open reed-float level switch. When the water level is not full, the float sinks, the reed switch opens, and a high-level signal is supplied to the control device input port. In the first flushing sub-process, pure water is continuously reinjected, and the water level rises. When the water level reaches the predetermined height, the float rises under buoyancy, triggering the reed switch to close and pulling the control device input port to a low level. Upon detecting the change from high to low level at this port during each cycle scan, the control device immediately executes an interruption action: first, it stops the booster pump, then it closes the first inlet valve group, the first return valve group, the second return valve group, and the wastewater valve group. After completing these operations, the control device records the "first flush terminated due to full water" flag and directly puts the entire system into standby mode, awaiting the user's next operation.

[0144] The embodiments of this application can precisely control the flushing water source, avoiding the need for ineffective pump operation and pure water discharge after the cleaning or replacement purpose has been achieved, thus saving water resources and electricity.

[0145] In one possible embodiment, it also includes:

[0146] When the user is detected to have been inactive for more than a preset period of time, the water treatment system is controlled to enter a standby state; wherein, in the standby state, the first inlet valve group, the second inlet valve group, the wastewater valve group, the booster component, the first reflux valve group, the second reflux valve group, the circulation valve group, and the water production valve group are in a closed state.

[0147] The control device internally maintains one or more timers, whose core function is to accumulate the duration of inactivity by the user. Here, "user action" is defined as a series of specific events that can be recognized by the control device and interrupt the timing, such as receiving a water intake command, a flushing command, or other settings operations performed via the control panel.

[0148] When the system is in non-standby mode, whenever a user operation occurs, the control device immediately resets the inactivity timer, restarting the countdown from zero. Simultaneously, the control device continuously compares the timer's accumulated value with a pre-stored "preset duration" in memory, either in a separate main loop or via a timer interrupt. This preset duration is a fixed time threshold representing the maximum allowable idle time for the system. This application can obtain the common idle time distribution between a user's first water draw and the next operation by surveying or analyzing historical data; for example, most intervals are concentrated between several minutes and one hour. To avoid frequent state switching and allow for a reasonable buffer, the preset duration can be set slightly longer than the statistically derived high-frequency interval time, for example, a fixed value between thirty minutes and two hours. This duration setting ensures that the system does not accidentally enter standby mode when the user is briefly away, and automatically enters energy-saving mode after a reasonable period of idle time.

[0149] When the comparison logic detects that the value of the inactive timer has reached or exceeded the preset duration for the first time, the control device determines that the trigger condition for entering standby mode has been met. Subsequently, the control device initiates an ordered system shutdown sequence. This sequence first sends a stop command to the drive circuit of the booster component, causing it to lose power and stop operating. Next, the control device sends shutdown signals to the drive circuits of the first inlet valve group, the second inlet valve group, the wastewater valve group, the first return valve group, the second return valve group, the circulation valve group, and the water production valve group in a predetermined order or in parallel, ensuring that all water circuit control actuators are switched to the off state, completely cutting off the water flow. After confirming the shutdown of all actuators, the control device updates the system's internal status flag to "standby mode." In this state, the control device itself can switch to a low-power operation mode, retaining only necessary monitoring functions, waiting for the next wake-up event.

[0150] For example, the preset duration is set to thirty minutes. After a user completes one water dispensing cycle, the control device resets the inactivity timer to zero and starts timing again. During the next thirty minutes, if the user does not operate the machine again, the timer will continue to accumulate. When the timer reaches exactly thirty minutes, the control device's comparison logic is triggered. The control device first stops the booster pump, then sequentially or simultaneously closes the first inlet valve group, the second inlet valve group, the wastewater valve group, the first return valve group, the second return valve group, the circulation valve group, and the water production valve group, resetting all solenoid valves to the closed position. After completing the above operations, the system enters standby mode, maintaining only the basic standby current of the control board until a button is pressed or a remote command is received to wake it up.

[0151] The technical advantage of this embodiment lies in achieving automatic energy saving. When the system is not in use for an extended period, it automatically cuts off the power supply to the water pump and all valve groups, eliminating standby power consumption and conforming to the green and environmentally friendly design concept. It also serves to protect the system and extend its lifespan, allowing key moving components such as the booster pump and solenoid valves to rest when not in use. This avoids coil overheating, wear, and water hammer pressure impacts caused by prolonged power supply, effectively extending the service life of core components.

[0152] In one possible embodiment, it also includes:

[0153] S4. During the execution of the second flushing sub-process, if the TDS value measured by the first water quality detection component is greater than the first threshold; and / or if the TDS value measured by the second water quality detection component is less than the second threshold, the execution of the second flushing sub-process is stopped, and the water treatment system is controlled to enter the standby state; the first water quality detection component is installed in the pipe at the outlet of the pre-filter component, and the second water quality detection component is installed in the pipe at the wastewater outlet of the RO filter component.

[0154] The water quality detection component refers to a sensor or sensing device capable of detecting the TDS content of water. Its core function is to convert the TDS value of the water into an electrical signal that can be read and processed by the control device.

[0155] In step S4, the control device implements a parallel monitoring and process control mechanism for water quality at key points in the water treatment system. The control device continuously acquires measurement data from two independent water quality detection components. The first component, installed in the pipe at the outlet of the pre-filter, detects the total dissolved solids (TDS) value of the water after pre-filtration. The second component, installed in the pipe at the wastewater outlet of the RO filter, detects the TDS value of the discharged wastewater. The control device stores preset first and second threshold values ​​and compares the measured values ​​of the first and second components with the first threshold value in real time. During the second flushing sub-process, if any of the following conditions occur: the measured value of the first water quality detection component is higher than the first threshold value, the measured value of the second water quality detection component is lower than the second threshold value, or both conditions are met simultaneously, the control device immediately generates a process termination command. The instruction first stops the second flushing sub-process, that is, the control device sends a shut-off signal to the second inlet valve group, circulation valve group, wastewater valve group and pressurization component to cut off the water flow and stop pressurization; then the control device switches the water treatment system to standby state, at which time all valve groups and pressurization components are in the closed state, and the system enters a low power consumption standby mode.

[0156] For example, suppose the first threshold is set to 100 mg / L and the second threshold is set to 500 mg / L. During the second flushing sub-process, the control device continuously reads data from the two water quality detection components. In the first scenario, if the first water quality detection component measures 120 mg / L, exceeding the first threshold, while the second water quality detection component measures 600 mg / L, not lower than the second threshold, then the control device's condition one is met. It immediately stops the flushing process and enters standby mode, while simultaneously generating a prompt message on the user interface, such as "Pre-filter water quality abnormal." In the second scenario, if the first water quality detection component measures 80 mg / L, not exceeding the first threshold, but the second water quality detection component measures 300 mg / L, lower than the second threshold, then the control device's condition two is met. It similarly stops flushing and enters standby mode, with a prompt message such as "RO membrane filtration efficiency abnormal." In the third scenario, if the first water quality detection component measures a value of 150 mg / L and the second water quality detection component measures a value of 400 mg / L (both conditions are met), the control device will also execute a stop and standby operation, and display a message stating "Multiple water quality anomalies in the system." When any of the above scenarios are triggered, the control device can respond quickly, ensuring that the system interrupts the current flushing and enters a safe standby state.

[0157] This step achieves comprehensive safety monitoring of the flushing process through dual-point water quality monitoring and composite logic judgment. It can automatically and promptly terminate flushing under various abnormal scenarios, including insufficient pre-filtration effect, degraded RO membrane performance, or both simultaneously. This effectively prevents waste of water resources and electricity due to substandard water quality, while also avoiding potential damage caused by continuous system operation under abnormal conditions. This mechanism significantly enhances the intelligence, operational reliability, and maintenance targeting of the water treatment system, providing users with clear fault warnings and system protection.

[0158] It should be noted that the first threshold is related to the outlet of the pre-filter component. Its determination method can be based on the upper limit of the effluent water quality that the component can still guarantee at the end of its lifespan. For example, by testing the maximum output TDS value of the aged filter cartridge under rated operating conditions and adding a safety margin, the first threshold can be set to 100 mg / L. The second threshold is related to the wastewater outlet of the RO filter component. Its determination method can be based on the minimum contaminant concentration that the wastewater should have during effective flushing. For example, by measuring the typical TDS value of the wastewater discharged during flushing when the new RO membrane is in normal operation and taking a certain percentage (e.g., 80%) as the lower limit, the second threshold can be set to 300 mg / L. This application can derive suitable thresholds through similar experiments or calculations based on specific component specifications and raw water conditions.

[0159] In one possible embodiment, the method further includes:

[0160] S5. When the control device receives a water intake command from the user, it executes the water production process;

[0161] The water production process includes:

[0162] The system controls the pressurization component to start; controls the second inlet valve group, the water production valve group, and the wastewater valve group to open; and controls the first inlet valve group, the first reflux valve group, the second reflux valve group, and the circulation valve group to close.

[0163] In step S5, the control device responds to the user's immediate water demand by switching from standby, flushing, or other states to a steady-state water production mode. Its core task is to establish a unidirectional, highly efficient purification path from raw water input to pure water output, while simultaneously discharging wastewater in an orderly manner. The control device first captures and decodes the "water intake command" through its input port or communication interface. Subsequently, based on the preset water production logic, the control device outputs a series of precise control signals to configure the water circuit status.

[0164] The control device operates according to a defined sequence. First, it opens the second inlet valve assembly and the water purification valve assembly, thus facilitating the main inlet water flow after pre-filtration and the pure water output flow. Simultaneously, to ensure the necessary transmembrane pressure differential for normal RO filtration and to discharge the generated concentrate, the control device opens the wastewater valve assembly. To isolate all possible diversion or return paths and prevent dilution or splitting of the product water, the control device simultaneously closes the first inlet valve assembly, the first return valve assembly, the second return valve assembly, and the circulation valve assembly. After all valves are switched to their correct positions, the control device sends a start command to the booster assembly's drive circuit, initiating operation and providing the required filtration pressure. At this point, a complete water purification circuit is established: raw water flows sequentially through the second inlet valve assembly, the pre-filtration assembly, the booster assembly, and the RO filtration assembly; the generated pure water flows out through the post-filtration assembly and the water purification valve assembly for user use; and the generated wastewater is discharged in real-time through the wastewater valve assembly. The control device maintains this state until the water dispensing command ends (e.g., the user turns off the water tap, or the preset water dispensing volume is reached), and then enters a stop or standby sequence.

[0165] For example, when a user presses the "Dispense Water" button on the device, the control unit recognizes the command through the button scanning circuit. The control unit then energizes and opens the solenoid valves of the second inlet valve group and the water production valve group, and simultaneously energizes and opens the wastewater valve group. At the same time, it ensures that the solenoid valves of the first inlet valve group, the first return valve group, the second return valve group, and the circulation valve group are de-energized and closed. After completing the valve group configuration, the control unit closes the power supply relay of the booster pump, and the pump starts running. At this time, the user can receive a continuous supply of fresh pure water from the tap. When the user presses the "Dispense Water" button again to stop, or when the control unit detects that 1 liter of water has been dispensed via the flow meter, it first stops the booster pump, then closes the second inlet valve group, the water production valve group, and the wastewater valve group, ending the current water production process.

[0166] In one embodiment, a control device is provided, the internal structure of which can be shown in the following diagram. Figure 6 As shown, the control device includes a processor, memory, network interface, and database connected via a system bus. The processor provides computational and control capabilities. The memory includes non-volatile and / or volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and database. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The network interface is used to communicate with external clients via a network connection. When the computer program is executed by the processor, it implements a function or procedure based on a waterway control method.

[0167] In one embodiment, a water treatment device is provided, comprising any of the above-described water treatment systems.

[0168] In one embodiment, a computer-readable storage medium is provided, which stores a computer program that is executed by a processor using any of the above-described waterway control methods.

[0169] It should be noted that the functions or steps that the computer-readable storage medium or water treatment device can achieve are described in the relevant descriptions of the server side and client side in the foregoing method embodiments. To avoid repetition, they will not be described one by one here.

[0170] 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. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0171] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is used as an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0172] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A waterway control method, characterized in that, Applied to a water treatment system, the water treatment system includes: a first inlet valve group, a second inlet valve group, a wastewater valve group, a pre-filter assembly, a post-filter assembly, a booster assembly, an RO filter assembly, a first reflux valve group, a second reflux valve group, a circulation valve group, a water production valve group, and a control device; The inlet of the first inlet valve group and the inlet of the second inlet valve group are connected in parallel to the raw water input port. The outlet of the first inlet valve group is connected to the inlet of the booster assembly. The outlet of the second inlet valve group is connected to the inlet of the pre-filter assembly, and the outlet of the pre-filter assembly is connected to the inlet of the booster assembly. The outlet of the booster assembly is connected to the inlet of the RO filter assembly, and the wastewater outlet of the RO filter assembly is connected to the inlet of the wastewater valve group. The pure water outlet of the RO filter assembly is connected to the inlet of the post-filter assembly, and the outlets of the post-filter assembly are respectively... The system is connected to the inlet of the circulation valve group, the inlet of the water-making valve group, the inlet of the first return valve group, and the inlet of the second return valve group; the outlet of the circulation valve group is connected to the inlet of the booster component, the outlet of the first return valve group is connected to the inlet of the pre-filter component, and the outlet of the second return valve group is connected to the inlet of the first inlet valve group; the control device is electrically connected to the first inlet valve group, the second inlet valve group, the wastewater valve group, the first return valve group, the second return valve group, the circulation valve group, the water-making valve group, and the booster component, respectively. The waterway control method includes: The control device detects whether the preset flushing trigger conditions are met; If so, the control device executes the head cup water rinsing process; The head cup rinsing process includes at least a first rinsing sub-process and a second rinsing sub-process executed sequentially. The first flushing sub-process includes: controlling the pressurization component to start; controlling the first inlet valve group, the first return valve group, the second return valve group, and the wastewater valve group to open; and controlling the second inlet valve group, the water production valve group, and the circulation valve group to close. The second flushing sub-process includes: controlling the pressurization component to start; controlling the second inlet valve group, the circulation valve group and the wastewater valve group to open; and controlling the first inlet valve group, the water production valve group, the first return valve group and the second return valve group to close.

2. The waterway control method according to claim 1, characterized in that, The control device detects whether preset flushing trigger conditions are met, including: When the water treatment system is detected to have switched from standby to wake-up mode, and the standby time exceeds a time threshold, it is determined that the preset flushing trigger condition is met; or When the total dissolved solids (TDS) value output from the pure water outlet of the RO filter assembly exceeds the water quality threshold, a preset flushing trigger condition is determined to be met; a water quality detection component is installed in the pipeline of the pure water outlet of the RO filter assembly, and the water quality detection component is used to detect the TDS value of the water in the pipeline; or Upon receiving a flushing command from the user, determine that the preset flushing trigger conditions are met; or When the preset flushing cycle is detected, it is determined that the preset flushing trigger condition is met.

3. The waterway control method according to claim 2, characterized in that, The method further includes: The control device executes the explosive flushing wastewater sub-process after executing the first flushing sub-process and before executing the second flushing sub-process. The wastewater flushing sub-process includes: controlling the wastewater valve group to open and adjusting the opening degree of the wastewater valve group to a preset maximum opening degree; controlling the pressurization component to start; and controlling the first inlet valve group, the second inlet valve group, the water production valve group, the first return valve group, the second return valve group, and the circulation valve group to close.

4. The waterway control method according to claim 1, characterized in that, The water treatment system's pre-filtration component is equipped with a liquid level sensor. The method further includes: If the control device receives a full water signal from the liquid level sensor during the execution of the first rinsing sub-process, it stops executing the first rinsing sub-process.

5. The waterway control method according to claim 2, characterized in that, The method further includes: When the user is detected to have been inactive for more than a preset period of time, the water treatment system is controlled to enter a standby state; wherein, in the standby state, the first inlet valve group, the second inlet valve group, the wastewater valve group, the booster component, the first reflux valve group, the second reflux valve group, the circulation valve group, and the water production valve group are in a closed state.

6. The waterway control method according to claim 5, characterized in that, The method further includes: During the execution of the second flushing sub-process, if the TDS value measured by the first water quality detection component is greater than the first threshold, and / or if the TDS value measured by the second water quality detection component is less than the second threshold, the execution of the second flushing sub-process is stopped, and the water treatment system is controlled to enter a standby state; wherein, the first water quality detection component is installed in the pipe at the outlet of the pre-filter component, and the second water quality detection component is installed in the pipe at the wastewater outlet of the RO filter component.

7. The waterway control method according to claim 1, characterized in that, The method further includes: When the control device receives a water-taking command from a user, it executes the water production process; The water production process includes: The system controls the pressurization component to start; controls the second inlet valve group, the water production valve group, and the wastewater valve group to open; and controls the first inlet valve group, the first reflux valve group, the second reflux valve group, and the circulation valve group to close.

8. A water treatment system, characterized in that, include: The system comprises: a first inlet valve assembly, a second inlet valve assembly, a wastewater valve assembly, a pre-filter assembly, a post-filter assembly, a booster assembly, an RO filter assembly, a first reflux valve assembly, a second reflux valve assembly, a circulation valve assembly, a water production valve assembly, and a control device. The inlet of the first inlet valve group and the inlet of the second inlet valve group are connected in parallel to the raw water input port. The outlet of the first inlet valve group is connected to the inlet of the booster assembly. The outlet of the second inlet valve group is connected to the inlet of the pre-filter assembly, and the outlet of the pre-filter assembly is connected to the inlet of the booster assembly. The outlet of the booster assembly is connected to the inlet of the RO filter assembly, and the wastewater outlet of the RO filter assembly is connected to the inlet of the wastewater valve group. The pure water outlet of the RO filter assembly is connected to the inlet of the post-filter assembly, and the outlets of the post-filter assembly are respectively... The system is connected to the inlet of the circulation valve group, the inlet of the water-making valve group, the inlet of the first return valve group, and the inlet of the second return valve group; the outlet of the circulation valve group is connected to the inlet of the booster component, the outlet of the first return valve group is connected to the inlet of the pre-filter component, and the outlet of the second return valve group is connected to the inlet of the first inlet valve group; the control device is electrically connected to the first inlet valve group, the second inlet valve group, the wastewater valve group, the first return valve group, the second return valve group, the circulation valve group, the water-making valve group, and the booster component, respectively. The control device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor being used to perform the steps of the waterway control method as described in any one of claims 1 to 7.

9. A water treatment device, characterized in that, Includes the water treatment system as described in claim 8.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the waterway control method as described in any one of claims 1 to 7.

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