Water purification system control method, water purification system, and storage medium

Abstract

This application proposes a water purification system control method, a water purification system, and a storage medium, applicable to a water purification system. The water purification system includes a water purification module, a heat exchange module, and a water outlet module. The water purification system control method includes: controlling the water purification module to purify raw water to produce purified water; controlling the heat exchange module to heat and homogenize the purified water to achieve a target water temperature; controlling the water outlet module to acquire water outlet temperature information and, based on a comparison between the water outlet temperature information and the target water temperature, sending an adjustment command to the heat exchange module to adjust the operating state of the heating and / or homogenization processes until the water outlet temperature meets preset conditions. This application can effectively improve the accuracy and stability of the water outlet temperature of the water purification system, ensuring that the water outlet temperature meets user requirements.

Description

Technical Field

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

[0002] With the popularization of water purification technology, integrated water purification systems that combine water purification and heating functions are now widely used in various scenarios. Integrated water purification systems typically integrate water purification, heat exchange, and water output modules, enabling continuous operation of raw water purification and purified water heating. Users also have higher requirements for the accuracy and stability of the system's output water temperature.

[0003] In existing water purification systems, purified water from the purification module enters the heat exchange module for heating. Although some systems may supplement this with simple water temperature equalization, the overall control effect of the heat exchange module on heating and equalization is poor, making it difficult to ensure that the purified water temperature accurately reaches the preset target temperature. At the same time, during the water outlet stage, the system's monitoring results of the outlet water temperature cannot effectively influence the adjustment of the heat exchange module's operating status, and the heating and equalization operations of the heat exchange module cannot adapt to the actual outlet water temperature.

[0004] In summary, the temperature control of existing water purification systems suffers from insufficient accuracy in regulating water temperature in the heat exchange stage, and a lack of effective linkage between the temperature control operations of the outlet water and the heat exchange stage. Ultimately, this results in the system's outlet water temperature accuracy and stability failing to meet usage requirements. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides a water purification system control method, a water purification system, and a storage medium, which can solve the problems of insufficient water temperature regulation accuracy in the heat exchange stage and the lack of effective linkage between the temperature control operations of the outlet water and the heat exchange stage in existing water purification systems.

[0006] To address the aforementioned technical problems, this application provides a water purification system control method, applied to a water purification system including a water purification module, a heat exchange module, and a water outlet module. The water purification system control method includes: The water purification module is controlled to purify the raw water and produce purified water; The heat exchange module is controlled to heat and homogenize the purified water so that the purified water temperature reaches the target water temperature. The system controls the water outlet module to acquire water outlet temperature information and sends an adjustment command to the heat exchange module based on the comparison between the water outlet temperature information and the target water temperature, so as to adjust the operating state of the heating treatment and / or the homogenization treatment until the water outlet temperature meets the preset conditions.

[0007] Optionally, in some embodiments of this application, controlling the heat exchange module to heat and homogenize the purified water to bring the purified water temperature to the target temperature includes: Obtain the initial water temperature of the purified water; The target temperature for the first stage of heating is determined based on the difference between the target water temperature and the initial water temperature. The heater in the heat exchange module is controlled to heat the purified water to the target temperature of the first stage of heating. Once the purified water reaches the target temperature of the first stage of heating, the diaphragm pump in the heat exchange module is started, and the diaphragm pump is controlled to run at a first preset speed for a first preset time, so that the purified water circulates in the system to equalize the water temperature. The heater is controlled to heat the homogenized purified water to a second preset temperature, which is higher than the target water temperature.

[0008] Optionally, in some embodiments of this application, controlling the water outlet module to acquire water outlet temperature information and sending an adjustment command to the heat exchange module based on a comparison between the water outlet temperature information and the target water temperature includes: During the water intake process, the real-time water temperature is obtained through the first temperature sensor in the water outlet module; When the deviation between the real-time outlet water temperature and the target water temperature exceeds a first threshold, a command to adjust the heater power is sent to the heat exchange module. When the deviation between the real-time outlet water temperature and the target water temperature exceeds a second threshold, an instruction to adjust the diaphragm pump speed is sent to the heat exchange module, wherein the second threshold is greater than the first threshold.

[0009] Optionally, in some embodiments of this application, the method further includes: The water temperature inside the heat exchange module is obtained by an NTC temperature sensor installed inside the heat exchange module; The water temperature at the outlet is obtained through the water outlet module; Calculate the temperature difference between the outlet water temperature and the water temperature inside the heat exchange module; When the temperature difference is greater than the preset temperature difference threshold, a command to start the diaphragm pump is sent to the heat exchange module first to equalize the water temperature. When the temperature difference is less than or equal to the preset temperature difference threshold, a command to adjust the heater power is sent to the heat exchange module to adjust the outlet water temperature.

[0010] Optionally, in some embodiments of this application, the method further includes: Determine the water supply flow rate based on the target water temperature; The inlet-outlet and outlet regulating valve is controlled to supply water to the heat exchange module at the specified water supply flow rate in order to maintain a stable water level in the heat exchange module.

[0011] Optionally, in some embodiments of this application, the method further includes: The zero-pressure valve in the water purification module is controlled to regulate the pressure of the raw water entering the water purification module so that the pressure of the raw water is stabilized within a preset pressure range. And / or, before controlling the heat exchange module to heat and homogenize the purified water, control the diaphragm pump in the heat exchange module to run at a second preset speed for a second preset time to drive the purified water to circulate in the system to preheat the system pipeline.

[0012] Optionally, in some embodiments of this application, the method further includes: The user's water usage mode command is obtained through the water outlet module. The water usage mode command includes formula preparation mode, tea brewing mode, or boiling water mode. Based on the water usage mode command, the corresponding target water temperature, heating strategy, and homogenization strategy are determined, and the heat exchange module is controlled to execute the heating strategy and homogenization strategy accordingly.

[0013] Optionally, in some embodiments of this application, the step of controlling the water outlet module to acquire the water outlet temperature information and sending an adjustment command to the heat exchange module based on the comparison result of the water outlet temperature information and the target water temperature further includes: Establish a closed-loop feedback control model for water temperature; The outlet water temperature information is input as a feedback quantity into the water temperature closed-loop feedback control model. The closed-loop feedback control model for water temperature outputs control commands to dynamically adjust the heating power of the heater and the speed of the diaphragm pump in the heat exchange module.

[0014] Accordingly, this application provides a water purification system, which includes: a control module, a water purification module, a heat exchange module, and a water outlet module. The control module is used to control the operation of the water purification module, the heat exchange module, and the water outlet module. The control module includes: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the water purification system control method described above.

[0015] This application also provides a computer-readable storage medium storing a computer program, characterized in that, when the computer program is executed by a processor, it implements the steps of the water purification system control method as described above.

[0016] Implementing the embodiments of this application has the following beneficial effects: As described above, this application provides a water purification system control method, a water purification system, and a storage medium. The water purification system includes a water purification module, a heat exchange module, and a water outlet module. First, the water purification module is controlled to complete the purification treatment of the raw water, providing a foundation of qualified and stable water supply for subsequent water temperature control, avoiding interference from water impurities and other factors on the heat exchange and temperature control process. Then, the heat exchange module simultaneously heats and homogenizes the purified water, gradually bringing the purified water temperature closer to the target water temperature from the source of temperature control, achieving basic water temperature control. Subsequently, the water outlet module continuously acquires the water outlet temperature information and compares it with the target water temperature. Based on the comparison results, it sends targeted adjustment commands to the heat exchange module, dynamically adjusting the heating and / or homogenization operation of the heat exchange module until the water outlet temperature meets the preset conditions. Through a linkage control method, the temperature control operation of the heat exchange module can accurately match the actual water outlet temperature, avoiding the water temperature deviation problem that is prone to occur in single heat exchange control, forming an adaptive dynamic temperature control adjustment mechanism. In summary, this application achieves closed-loop regulation from water source purification to heat exchange control and then to water outlet feedback regulation by coordinating the water purification module, heat exchange module, and water outlet module, and dynamically adjusting the heating and homogenization operation of the heat exchange module based on the water outlet temperature information. This effectively improves the accuracy and stability of the water outlet temperature, ensures that the water outlet temperature can stably meet the preset temperature conditions, and meets the diverse water needs of users. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of the water purification system provided in the embodiments of this application; Figure 2 This is another structural schematic diagram of the water purification system provided in the embodiments of this application; Figure 3 This is a schematic flowchart of the water purification system control method provided in the embodiments of this application; Figure 4 This is another schematic flowchart of the water purification system control method provided in the embodiments of this application; Figure 5 This is another schematic flowchart of the water purification system control method provided in the embodiments of this application.

[0019] The realization of the objectives, functional features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0023] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0024] This embodiment provides a water purification system applied to a water purifier, the overall structure of which is as follows: Figure 1 and Figure 2 As shown, the water purification system includes a water purification module, a heat exchange module, and a water outlet module. The modules are connected in series or parallel through pipelines to form a complete water circuit. The heat exchange module serves as the core control and heat exchange unit, integrating various valves, heat exchange and water storage components to achieve functions such as water circuit switching, temperature regulation, and water storage.

[0025] The water purification module provides the entire water system with purified water that meets usage standards. It is equipped with a booster pump, which powers the water supply to ensure stable water flow in each path. The output of the water purification module is connected to one end of the pure water valve and the first end of the flow regulating valve on the heat exchange module, enabling precise distribution of purified water to different pathways.

[0026] The heat exchange module, as the core control and heat exchange unit of the water system, connects the water purification module and the outlet water module. Its main functions include water path switching, water source temperature regulation, water storage, and water temperature circulation homogenization. It can deliver water pumped by the water purification module to the outlet water module through a matched target water path. This module integrates a pure water valve and a flow regulating valve, and can also be equipped with a water storage component, heating component, heat exchange component, and circulation pump.

[0027] Specifically, one end of the pure water valve is connected to the water purification module, and the other end is directly connected to the water outlet module. The controlled path is the first water path, which is independent of the flow regulating valve. It can directly deliver the room temperature purified water source of the water purification module to the water outlet module. The flow control valve has a four-end structure, specifically a one-inlet and three-outlet regulating valve. The first end is connected to the water purification module, the second end is connected to the water supply circuit, the third end is connected to the hot water circuit, and the fourth end is connected to the cold water circuit. It can switch between single or multiple water circuits according to water demand to complete the matching of water source pathways. One end of the water storage component is connected to the second end of the flow regulating valve through the water supply circuit, and the other end is connected to the third end of the flow regulating valve through the hot water circuit. It is used to store purified water and provide a carrier for hot water heating. It can be linked with the flow regulating valve and the pure water valve to achieve water replenishment and avoid heating interruption due to insufficient water source. The heating element is equipped with a water storage component to heat the water in the water storage component to a preset temperature, providing a temperature basis for hot and warm water needs and ensuring that the hot water temperature meets the standard. The heat exchange component works in conjunction with the heating component, circulation pump and temperature calibration component to help achieve precise adjustment of the water source temperature, exchange heat from the water source to the target temperature, ensure stable outlet water temperature and improve overall temperature control accuracy; The circulating pump is equipped with a water storage component to drive the water source to circulate within the water storage component, thereby achieving water temperature uniformity, avoiding local overheating or uneven temperature within the water storage component, ensuring heat exchange efficiency and stable outlet water temperature, and reducing water temperature fluctuations.

[0028] The water outlet module, serving as the system's water intake terminal, receives water that has been treated by the water purification module and regulated (cold, hot, or warm) by the heat exchange module, and outputs it to users to meet various water usage needs. Its input terminals are connected to the pure water valve of the heat exchange module, the cold water path of the flow regulating valve, and the mixed water path of the flow regulating valve, making it adaptable to different types of water sources transported by different water circuits.

[0029] In addition, the end of the heat exchange module's water supply path furthest from the flow regulating valve is connected to the water storage component to replenish purified water to the water storage component; the end of the hot water path furthest from the flow regulating valve is connected to the water storage component to realize the delivery of water heated in the water storage component; the end of the cold water path furthest from the flow regulating valve is directly connected to the water outlet module to realize the direct output of room temperature cold water.

[0030] This application provides a water purification system control method; please refer to the following: Figure 1 and in conjunction with reference Figure 3 , Figure 3 A flowchart illustrating the water purification system control method provided in this application embodiment is shown below: S1. Control the water purification module to purify the raw water and produce purified water; Specifically, for step S1, after the system starts, raw water (tap water) enters the water purification module, flows through the check valve for one-way flow, and then flows into the pre-filter component to remove residual chlorine, large molecular impurities, and odors from the raw water. Subsequently, the booster pump increases the raw water pressure to the RO membrane working pressure (0.6-0.8MPa). Under the action of the RO reverse osmosis membrane, the raw water completes deep filtration, removing harmful substances such as heavy metals, bacteria, and viruses, and preparing pure water that meets the direct drinking standards. The concentrated water (wastewater) produced by the RO membrane is discharged through the parallel wastewater valve, the reversing valve, and the regular wastewater valve. At the same time, the system regularly flushes the RO membrane through the zero-stagnant water structure to reduce the TDS value of the first cup of water. After the prepared pure water is tested by the flow meter, NTC, and TDS, it is sent to the heat exchange module.

[0031] For example, when a user turns on the water purification system, raw water (tap water pressure 0.3MPa) enters the system. After filtration by the pre-filter, the booster pump increases the pressure to 0.7MPa. After filtration by the RO membrane, the TDS value of the pure water drops to 8ppm, which meets the direct drinking standard. The concentrated water is discharged through the wastewater valve at a wastewater ratio of 1:3. At the same time, the system automatically flushes the RO membrane for 3 minutes every 24 hours to ensure that the TDS value of the first cup of water is stable below 10ppm.

[0032] In a specific embodiment, raw water first enters the water purification module. A zero-pressure valve dynamically regulates the pressure of the raw water, preferably stabilizing it within a preset pressure range of 0.2-0.4 MPa. After filtration, the raw water is pressurized to 0.6-0.8 MPa by a booster pump and undergoes deep purification through an RO reverse osmosis membrane, producing purified water that meets direct drinking standards. Before the purified water is transported to the heat exchange module via pipeline, the system uses an NTC temperature sensor at the connection point between the water purification module and the heat exchange module to acquire the initial water temperature in real time. This initial water temperature data serves as the core reference for subsequent stepped heating.

[0033] S2. Control the heat exchange module to heat and homogenize the purified water so that the purified water temperature reaches the target water temperature; Specifically, in step S2, after the pure water flows into the heat exchange module, the flow is distributed through a one-in-three-out regulating valve. A portion of the pure water is replenished into the hot tank through the water supply path (0 / 2L / min constant flow). The heater in the hot tank heats the pure water, while the circulation pump and hourly wheel pump drive the water in the hot tank to circulate, so that the water temperature in the tank reaches the preset base temperature evenly. Another portion of the pure water flows into the instantaneous heating element through the heat exchange inlet path (0 / 1 / 1.5 / 2L / min constant flow) to provide a water source for rapid heating. The remaining pure water flows directly to the faucet through the cold water path (0~2L / min adjustable flow) as room temperature water supply.

[0034] For example, if the user sets the outlet water temperature to 90℃, the one-in-three-out regulating valve will add 2L / min of pure water to the hot tank, the heater will heat the water temperature in the hot tank to 85℃, and the circulation pump will drive the water circulation at a flow rate of 1.2L / min to keep the water temperature deviation in the tank within ±1℃; at the same time, the heat exchange inlet water circuit will supply water to the instantaneous heating element at a flow rate of 1.5L / min to prepare for secondary heating.

[0035] S3. Control the water outlet module to obtain the water outlet temperature information, and send an adjustment command to the heat exchange module based on the comparison result between the water outlet temperature information and the target water temperature, so as to adjust the operation status of the heating treatment and / or homogenization treatment until the water outlet temperature meets the preset conditions. Specifically, in step S3, the hot water output from the heating tank merges with the pure water in the heat exchange inlet circuit and enters the instantaneous heating element for secondary heating. The heated hot water then flows into the faucet outlet module after passing through the pressure booster valve and check valve. The NTC temperature sensor in the faucet module collects the actual water temperature at the outlet in real time and feeds the water temperature data back to the system control unit in real time. At the same time, the NTC sensor in the heat exchange module synchronously detects the water temperature of the heating tank and the instantaneous heating element, providing multi-dimensional data for temperature control. For example, after the instantaneous heating element reheats the hot water, the hot water flows into the faucet. The faucet NTC detects that the current outlet water temperature is 87℃ and transmits this data to the system control unit in real time.

[0036] The control unit compares the actual water temperature at the outlet with the target water temperature set by the user. Based on the comparison result, it sends targeted adjustment commands to the heat exchange module. If the actual water temperature is lower than the target water temperature, it controls the heater in the hot water tank to increase the heating power and increases the flow rate of the circulating pump to improve the water temperature homogenization effect, or controls the instantaneous heating element to increase the heating power to quickly raise the water temperature. If the actual water temperature is higher than the target water temperature, it controls the heater in the hot water tank to reduce the heating power, or increases the flow rate of the cold water path for mixing and cooling. During the adjustment process, the system continuously monitors the outlet water temperature and dynamically adjusts the heating and homogenization status until the outlet water temperature meets the preset conditions (such as the target water temperature ±2℃). For example, after comparing the water temperature, the system found that the outlet water temperature (87℃) was lower than the target (90℃). It immediately controlled the power of the heater in the hot tank to increase from 1500W to 2000W, and at the same time increased the flow rate of the circulation pump from 1.2L / min to 1.5L / min to accelerate the homogenization of water temperature. Simultaneously, it controlled the power of the instantaneous heating element to increase from 2000W to 2500W to quickly raise the water temperature. After 30 seconds, the NTC of the faucet detected that the water temperature had reached 90℃, and the system maintained the current heating power to ensure the stability of the water temperature.

[0037] Throughout the user's water intake process, the system continuously executes a closed-loop control logic of "outlet water temperature detection → target water temperature comparison → heat exchange state adjustment." It dynamically adjusts the heating power of the heating tank and instantaneous heating element, as well as the circulation pump flow rate, in real time at high frequencies (e.g., once per second) to ensure the outlet water temperature remains stable within the preset range, preventing temperature drops or fluctuations caused by continuous water intake. For example, if the user continuously draws water for 3 minutes, the system checks the outlet water temperature every second. When the water temperature drops to 89℃, it immediately increases the instantaneous heating element power by 100W, causing the water temperature to rise back to 90℃ within 2 seconds. Throughout the process, water temperature fluctuations are controlled within ±1℃, resulting in no noticeable temperature changes.

[0038] This embodiment constructs a closed-loop control system for the entire process, from pure water preparation and heating homogenization to outlet water temperature control, through the coordinated operation of the water purification module, heat exchange module, and water outlet module. It can dynamically adjust the heating and homogenization state according to the actual water temperature at the outlet, effectively solving problems such as uneven water temperature, large outlet water deviation, and continuous water temperature fluctuation in existing systems. It significantly improves the accuracy and stability of the outlet water temperature. At the same time, the zero-stagnant water structure ensures the water quality of the first cup, providing users with direct drinking water with accurate, stable, and safe temperature, thus improving the user experience and operational reliability of the water purification system.

[0039] Optionally, such as Figure 4 As shown, in some embodiments, step S2, "controlling the heat exchange module to heat and homogenize the purified water so that the purified water temperature reaches the target water temperature," may specifically include: S21. Obtain the initial water temperature of the purified water; Specifically, in step S21, after the water purification module completes the filtration and purification of the raw water and successfully produces purified water that meets drinking standards, a temperature detection component installed at the connection point between the water purification module and the heat exchange module detects the actual temperature of the purified water in real time. This detected temperature is defined as the initial temperature of the purified water, and this data is transmitted to the system control unit in real time as a basis for subsequent heating temperature setting and heating power adjustment. For example, if the user sets the target water temperature to 45℃, after the water purification module completes the raw water purification, the temperature detection component detects that the initial water temperature is 20℃ and transmits this 20℃ data to the system control unit.

[0040] S22. Determine the target temperature for the first stage of heating based on the difference between the target water temperature and the initial water temperature; Specifically, in step S22, the system control unit calculates the difference between the user-set target water temperature and the acquired initial purified water temperature. Taking into account the heat transfer characteristics of the purified water, the natural heat loss of the system pipelines, and the heating efficiency of the heat exchange module, the system control unit comprehensively determines the target temperature for the first stage of heating. This temperature is the intermediate temperature of the stepped heating process and is lower than the user-set target water temperature. For example, if the difference between the target water temperature of 45℃ and the initial water temperature of 20℃ is 25℃, the system control unit, considering the system characteristics, determines the target temperature for the first stage of heating to be 38℃.

[0041] S23. Control the heater in the heat exchange module to heat the purified water to the target temperature of the first stage of heating; Specifically, in step S23, the system control unit sends a heating command to the heater within the heat exchange module. The heater starts and runs continuously at an appropriate power level to heat the purified water entering the heat exchange module. During the heating process, the temperature detection component continuously monitors the purified water temperature. When the water temperature reaches the predetermined first-stage heating target temperature, the system control unit sends a command, and the heater stops heating for that stage. For example, the system control unit sends a command to the heater to heat at a rated power of 2000W. The heater starts heating the purified water, and when the temperature detection component detects that the purified water temperature has risen to 38°C, the heater stops heating.

[0042] S24. When the purified water reaches the target temperature of the first stage of heating, start the diaphragm pump in the heat exchange module and control the diaphragm pump to run at the first preset speed for the first preset time, so that the purified water circulates in the system to equalize the water temperature. Specifically, in step S24, after the water temperature reaches the target heating temperature for the first stage and the heater stops heating, the system control unit immediately sends a start command to the diaphragm pump in the heat exchange module. The diaphragm pump starts and runs continuously at the first preset speed, and the running time strictly follows the first preset duration set by the system. During the operation of the diaphragm pump, it drives the purified water in the heat exchange module and connected pipelines to circulate internally, breaking up the local temperature differences formed in the purified water during the heating process, thereby making the overall water temperature in the heat exchange module more uniform. For example, after the purified water temperature reaches 38℃, the diaphragm pump starts and runs at the first preset speed of 1000r / min for the first preset duration of 20 seconds. During this process, the purified water circulates in the internal pipelines of the heat exchange module, and the original local water temperature of 37℃-39℃ is eventually uniformized to a stable 38℃.

[0043] S25. Control the heater to heat the homogenized purified water to a second preset temperature, which is higher than the target water temperature; Specifically, in step S25, after the diaphragm pump completes its preset operating time and the purified water temperature is homogenized, the system control unit sends a heating command to the heater again. The heater restarts and reheats the homogenized purified water. During the heating process, the water temperature is continuously monitored until the purified water temperature reaches the second preset temperature set by the system. This temperature is higher than the user's initial target water temperature. Once this temperature is reached, the heater stops operating. For example, if the system sets the second preset temperature to 47℃ (higher than the target water temperature of 45℃), the heater restarts and heats at 1500W power, raising the homogenized 38℃ purified water to 47℃ before stopping.

[0044] This embodiment effectively avoids the problems of local overheating and uneven overall water temperature caused by direct heating in one go by implementing stepped heating of purified water and adding a water temperature homogenization operation between two heating cycles. The purified water temperature in the heat exchange module is first initially increased by stepped heating, and then the overall temperature is made uniform through circulation homogenization. Subsequently, it is heated to a second preset temperature higher than the target water temperature. This not only improves the overall uniformity of the purified water temperature in the heat exchange module, but also reserves compensation space for natural heat loss in the subsequent water transportation and water outlet process. This makes the process of purified water temperature approaching the target water temperature more controllable, thereby improving the temperature control accuracy of the heat exchange module for purified water heating.

[0045] In a specific embodiment, the heat exchange module employs a preferred strategy of heating the purified water in stages to the target water temperature +2°C, while simultaneously performing a 10-second small-circulation water temperature homogenization operation. The specific implementation steps are as follows: The temperature difference is calculated based on the target water temperature set by the user and the detected initial water temperature. The target temperature for the first stage of heating is preferably set to the target water temperature of -5 to 8℃. The heater is controlled to heat the purified water to this temperature with an appropriate power. For example, if the target water temperature is 45℃ and the initial water temperature is 20℃, the target temperature for the first stage of heating is preferably set to 38℃. The heater is heated to 38℃ with a power of 2000W and then stops.

[0046] Once the purified water reaches the target temperature for the first stage of heating, the system immediately starts the diaphragm pump. The diaphragm pump is preferably controlled to run at a first preset speed of 1000r / min for 10 seconds (10-second small cycle), driving the purified water to circulate in the heat exchange module's heat tank and internal pipelines, breaking up the local temperature stratification formed during the heating process, and making the purified water temperature uniform within the deviation range of ±1℃.

[0047] After a 10-second small cycle is completed, the heater restarts and heats the homogenized purified water to the second preset temperature (target water temperature + 2℃). This preferred temperature setting is to reserve compensation space for natural heat loss during subsequent water transportation and water discharge. For example, when the target water temperature is 45℃, the second preset temperature is preferably set to 47℃, and when the target water temperature is 85℃, the second preset temperature is preferably set to 87℃.

[0048] Throughout the heating and homogenization processes, the water supply flow rate can be precisely controlled via a three-way flow control valve based on the target water temperature. The preferred flow rates are 2L / min for the formula preparation mode (45℃), 1.5L / min for the tea brewing mode (85℃), and 1L / min for the boiling water mode (98℃). This ensures the water level within the heat exchange module remains within a preset range, preventing fluctuations from affecting heating and homogenization. Furthermore, before the heat exchange module performs heating and homogenization operations, the diaphragm pump is preferably operated at a second preset speed of 800 rpm for 60 seconds to circulate purified water in the system pipeline, preheating the pipeline and preventing additional heat loss from cold pipelines.

[0049] Optionally, such as Figure 5 As shown, in some embodiments, step S3, "controlling the outlet water module to acquire outlet water temperature information and sending an adjustment command to the heat exchange module based on the comparison result between the outlet water temperature information and the target water temperature," may specifically include: S31. During the water intake process, the real-time water temperature is obtained through the first temperature sensor in the water outlet module; Specifically, in step S31, after the user triggers the water dispensing operation, the water dispensing module enters the working state, and the first temperature sensor set at the water dispensing end of the water dispensing module is activated simultaneously. It collects the actual water temperature of the purified water flowing through the water dispensing end in real time in a high-frequency detection method, forming real-time water temperature data. This data is transmitted to the system control unit in real time, serving as the core basis for subsequent water temperature deviation judgment and control command issuance. Throughout the entire water dispensing process, the sensor continuously detects and transmits data in real time to ensure the timeliness of temperature control adjustment.

[0050] For example, when a user turns on the tap to make tea and sets the target water temperature to 85℃, the first temperature sensor of the water outlet module detects the water temperature once per second during the water dispensing process and transmits water temperature data such as 83℃, 84℃, and 82℃ to the system control unit in real time.

[0051] S32. When the deviation between the real-time outlet water temperature and the target water temperature exceeds the first threshold, a command to adjust the heater power is sent to the heat exchange module; Specifically, in step S32, the system control unit calculates the difference between the received real-time outlet water temperature and the preset target water temperature to obtain a water temperature deviation value. If this deviation value exceeds the first threshold set by the system, it indicates a slight deviation between the outlet water temperature and the target water temperature. At this time, the control unit sends a command to the heat exchange module to adjust the heater power. By increasing or decreasing the heater's operating power, the heating efficiency of the purified water is directly changed, and the purified water temperature is quickly and finely adjusted to achieve a slight correction of the water temperature deviation, bringing the outlet water temperature closer to the target water temperature. For example, if the system sets the first threshold to ±1℃ and the target water temperature to 85℃, and the real-time outlet water temperature is detected at 83℃ during water intake, the water temperature deviation is -2℃, exceeding the first threshold. The system control unit immediately sends a command to the heat exchange module to increase the heater's operating power from 1800W to 2200W to improve heating efficiency and increase the outlet water temperature.

[0052] S33. When the deviation between the real-time outlet water temperature and the target water temperature exceeds the second threshold, a command to adjust the diaphragm pump speed is sent to the heat exchange module, wherein the second threshold is greater than the first threshold; Specifically, in step S33, the system control unit continuously determines the deviation between the real-time outlet water temperature and the target water temperature. If the deviation exceeds the second threshold set by the system (the value of this threshold is greater than the first threshold), it indicates that there is a significant deviation between the outlet water temperature and the target water temperature. At this time, the control unit sends a command to the heat exchange module to adjust the speed of the diaphragm pump. By increasing or decreasing the operating speed of the diaphragm pump, the circulation rate of purified water in the heat exchange module is changed, thereby optimizing the water temperature uniformity effect of purified water in the heat exchange module from the root, solving the problem of significant deviation in outlet water temperature caused by uneven water temperature distribution, and achieving significant correction of water temperature in conjunction with heater power adjustment. For example, the system sets the second threshold to ±3℃ (greater than the first threshold ±1℃), the target water temperature is 85℃, the real-time water temperature detection during water intake is 81℃, the water temperature deviation is -4℃, which exceeds the second threshold. The system control unit sends a command to the heat exchange module to increase the operating speed of the diaphragm pump from 800r / min to 1500r / min, thereby accelerating the circulation rate of purified water in the heat exchange module, improving the water temperature uniformity effect, and achieving a rapid water temperature recovery in conjunction with the increase in heater power.

[0053] This embodiment implements graded temperature control adjustment based on the degree of deviation of the outlet water temperature during the water intake process. Small deviations can be quickly fine-tuned by adjusting the heating power, while large deviations can be optimized from the source by adjusting the pump speed to achieve water temperature uniformity. The two control methods are adapted to different water temperature deviation scenarios, effectively avoiding the limitations of a single control method when dealing with different deviations. It can quickly and efficiently correct the deviation between the outlet water temperature and the target water temperature, improve the stability and accuracy of the outlet water temperature throughout the water intake process, and keep the outlet water temperature close to the target water temperature.

[0054] Optionally, in some embodiments, the water purification system control method further includes: S41. The water temperature inside the heat exchange module is obtained by an NTC temperature sensor installed inside the heat exchange module; Specifically, in step S41, throughout the entire operation of the water purification system, NTC temperature sensors deployed in the core heating area of ​​the heat exchange module (such as the hot tank cavity) continuously collect the actual water temperature inside the heat exchange module in real time. These NTC temperature sensors directly detect the water temperature in the core heating area, avoiding interference from pipeline heat loss and accurately reflecting the true water temperature state during heating. The collected water temperature data is transmitted to the system control unit in real time, serving as the core basis for subsequent temperature difference calculations. For example, during water purification system operation, the NTC sensor inside the hot tank of the heat exchange module detects that the water temperature inside the tank is 88℃ in real time and transmits this data synchronously to the system controller.

[0055] S42. Obtain the water temperature at the outlet end through the water outlet module; Specifically, in step S41, during the user's water intake process, a temperature detection component installed in the outlet pipe of the water outlet module continuously collects the outlet water temperature in real time when the user actually takes water. This sensor directly detects the final purified water temperature obtained by the user, truly reflecting the actual water temperature status at the outlet. The collected outlet water temperature data is transmitted to the system control unit in real time, forming a two-dimensional water temperature detection system with the water temperature in the heat exchange module. For example, when the user turns on the faucet to take water, the NTC sensor in the faucet module detects in real time that the outlet water temperature is 82℃ and transmits this data to the system controller.

[0056] S43. Calculate the temperature difference between the water temperature at the water end and the water temperature inside the heat exchange module; Specifically, in step S43, after receiving two sets of data—the water temperature inside the heat exchange module and the water temperature at the outlet—the system control unit automatically calculates the absolute temperature difference between them. This temperature difference directly reflects the uniformity of the purified water temperature inside the heat exchange module, the degree of heat loss in the pipeline, and the rationality of the heating state, providing an objective basis for triggering subsequent control logic. For example, after receiving two sets of data—the water temperature inside the heat exchange module is 88℃ and the water temperature at the outlet is 82℃—the controller calculates that the absolute temperature difference between them is 6℃.

[0057] S44. When the temperature difference is greater than the preset temperature difference threshold, a command to start the diaphragm pump is sent to the heat exchange module first to equalize the water temperature; Specifically, for step S44, the water purification system has a pre-calibrated temperature difference threshold, such as 3℃ or 5℃, set according to system pipeline characteristics, heating efficiency, and other parameters. When the calculated temperature difference is greater than the preset threshold, it indicates that there is a serious uneven water temperature distribution inside the heat exchange module (such as local overheating or local low temperature). At this time, the water purification system first sends a command to the heat exchange module to start the diaphragm pump. After the diaphragm pump starts, it drives the purified water in the heat exchange module to circulate in the internal pipeline, quickly breaking up local temperature stratification, and homogenizing the overall water temperature in the heat exchange module. This eliminates the cause of excessive temperature difference from the root and avoids the problem of uneven water temperature that cannot be solved by simply adjusting the heater power. For example, the water purification system has a preset temperature difference threshold of 3℃. If the calculated temperature difference of 6℃ is greater than 3℃, the controller will immediately send a command to start the diaphragm pump and control it to run at a speed of 1200r / min. After the diaphragm pump drives the purified water in the heat tank to circulate for 30 seconds, the water temperature in the heat exchange module will be uniform to 85℃, and the water temperature at the outlet will rise to 84℃ simultaneously. The temperature difference between the two will be reduced to 1℃, which meets the preset requirements.

[0058] S45. When the temperature difference is less than or equal to the preset temperature difference threshold, a command to adjust the heater power is sent to the heat exchange module first to adjust the outlet water temperature; Specifically, in step S45, when the calculated temperature difference is less than or equal to the preset temperature difference threshold, it indicates that the overall water temperature uniformity within the heat exchange module is good. The temperature difference mainly originates from insufficient or excessive heating power of the heater, leading to overall water temperature deviation. In this case, the system prioritizes sending a command to the heat exchange module to adjust the heater power. By increasing the heater power to improve heating efficiency or decreasing the heater power to reduce heating efficiency, the overall water temperature within the heat exchange module is quickly adjusted, thereby synchronously correcting the outlet water temperature and achieving precise temperature control. For example, if the preset temperature difference threshold for the water purification system is 3℃ and the calculated temperature difference is 2℃, which is less than 3℃, the controller prioritizes sending a command to increase the heater's operating power from 1800W to 2200W. After the heater power is increased, the water temperature within the heat exchange module rises to 86℃ within 10 seconds, and the outlet water temperature simultaneously reaches 85℃, meeting the user-set target water temperature requirements.

[0059] This embodiment addresses scenarios with excessive temperature differences (uneven water temperature) by prioritizing the use of a diaphragm pump to homogenize the water temperature, thus resolving the problem at its root. For scenarios with smaller temperature differences (overall water temperature deviation), it prioritizes adjusting the heater power to quickly correct the water temperature. This effectively avoids problems such as uneven water temperature, delayed temperature control response, and insufficient accuracy caused by blindly adjusting the heater in existing technologies. It improves the accuracy, uniformity, and stability of the water temperature output from the water purification system, optimizes the targeting and efficiency of temperature control, and provides users with stable and uniform drinking water.

[0060] In a specific embodiment, after the user triggers the water dispensing operation, the first temperature sensor in the water dispensing module acquires the real-time water temperature at a high frequency of 1 time per second, compares the real-time water temperature with the target water temperature, and performs graded adjustment based on the deviation value. Preferably, the first threshold is set to ±1℃ and the second threshold is set to ±3℃. Specific implementation: When the deviation between the real-time outlet water temperature and the target water temperature exceeds ±1℃ (first threshold) but does not exceed ±3℃ (second threshold), the system only sends a heater power adjustment command to the heat exchange module. The preferred power adjustment gradient is 200W / time. For example, if the target water temperature is 85℃ and the real-time outlet water temperature is 83℃, the heater power will be increased from 1800W to 2200W to quickly fine-tune the water temperature.

[0061] When the deviation between the real-time outlet water temperature and the target water temperature exceeds ±3℃ (the second threshold), the system sends a diaphragm pump speed adjustment command to the heat exchange module. The preferred speed adjustment gradient is 300 r / min / cycle. For example, if the target water temperature is 85℃ and the real-time outlet water temperature is 81℃, the diaphragm pump speed will be increased from 800 r / min to 1500 r / min to accelerate the circulation and homogenization speed and eliminate the problem of uneven water temperature from the root.

[0062] Simultaneously, the system monitors the water temperature inside the heat exchange module and the water temperature at the outlet, preferably setting a preset temperature difference threshold of 3℃: when the temperature difference is greater than 3℃, the diaphragm pump is activated first to perform a 10-second small circulation to homogenize the water temperature; when the temperature difference is less than or equal to 3℃, the heater power is adjusted first to ensure targeted and efficient temperature control. Throughout the water intake process, the diaphragm pump is preferably controlled to run continuously at a low speed of 800r / min to maintain the circulation of clean water within the heat exchange module, avoiding water temperature stratification in the hot water tank caused by continuous water intake, and ensuring a continuous and stable outlet water temperature.

[0063] Optionally, in some embodiments, the water purification system control method further includes: S51. Determine the water supply flow rate based on the target water temperature; Specifically, for step S51, the system first obtains the user-set target water temperature, then combines the heating characteristics of the heat exchange module, the thermal expansion coefficient of the purified water at different temperatures, the natural evaporation loss of water during the target water temperature heating process, and the real-time water consumption pattern during the system's water intake process, and other operating parameters. Through built-in control logic or a preset water temperature-flow matching relationship, the system accurately calculates and determines the replenishment flow rate adapted to the current target water temperature. The setting of this replenishment flow rate takes into account the water capacity and heating efficiency of the heat exchange module's water storage chamber, ensuring that the replenishment rate matches the water loss rate during heating and water intake, laying the foundation for subsequent water level stability. For example, if the user sets the target water temperature to 98℃, the system, considering the characteristics of high evaporation loss and high thermal expansion coefficient at this high temperature, as well as the water capacity parameter of the heat exchange module's heat tank, determines the corresponding replenishment flow rate to be 1L / min; if the user sets the target water temperature to 45℃, where evaporation loss is low, the system determines the corresponding replenishment flow rate to be 2L / min.

[0064] S52. Control the one-inlet and three-outlet flow regulating valve in the heat exchange module to replenish water to the heat exchange module with the replenishment flow rate, so as to maintain the water level in the heat exchange module.

[0065] Specifically, in step S52, the water purification system sends an opening control command to the one-inlet, three-outlet flow regulating valve in the heat exchange module, matching the determined water replenishment flow rate. The flow regulating valve precisely adjusts the valve opening of the water replenishment passage according to the command, so that the purified water from the water purification module is continuously and stably delivered to the water storage chamber (such as a heat tank) of the heat exchange module at the specified water replenishment flow rate. At the same time, the liquid level detection component in the heat exchange module monitors the water level in the water storage chamber in real time. The flow regulating valve can make small adjustments to the valve opening based on the real-time feedback of the liquid level, ensuring that the water level in the water storage chamber is always maintained within the preset reasonable range, avoiding situations where the water level is too high, causing water overflow, or the water level is too low, causing dry burning or sudden changes in water temperature. For example, after determining that the water supply flow rate corresponding to the target water temperature of 98℃ is 1L / min, a command is sent to the one-inlet, three-outlet flow regulating valve to adjust the opening of its water supply passage to a setting suitable for a flow rate of 1L / min. The purified water is then supplied to the hot tank at a rate of 1L / min. The liquid level sensor in the hot tank monitors the water level in real time. When the water level is detected to be slightly lower than the preset range, the flow regulating valve will slightly increase its opening based on the feedback to keep the water supply flow rate stable at around 1L / min, so that the water level in the hot tank is always maintained in the preset mid-to-high range without significant fluctuations.

[0066] This embodiment achieves precise and controllable delivery of the water supply flow rate to the heat exchange module by accurately matching the water supply flow rate with the target water temperature and utilizing a one-inlet, three-outlet flow regulating valve. This allows the water supply rate to be adapted to the water loss rate of the heat exchange module at different target water temperatures, effectively avoiding the problem of excessively high or low water levels that can easily be caused by a fixed water supply flow rate, and continuously maintaining a stable water level within the heat exchange module. A stable water level is the foundation for the heat exchange module to achieve uniform heating and precise temperature control. It avoids problems such as changes in heating efficiency and local overheating caused by water level fluctuations, and also prevents sudden rises or falls in water temperature caused by excessively low water levels, ensuring the stable operation of the heat exchange module's heating and homogenization processes.

[0067] Optionally, in some embodiments, the water purification system control method further includes: S61. Control the zero-pressure valve in the water purification module to regulate the pressure of the raw water entering the water purification module so that the pressure of the raw water is stabilized within the preset pressure range; Specifically, in step S61, after the water purification system starts, before the water purification module purifies the raw water, the system automatically triggers the raw water pressure regulation process, controlling the zero-pressure valve at the inlet of the water purification module to enter the working state. The zero-pressure valve responds in real time to changes in the raw water pressure entering the water purification module, preparing for subsequent precise pressure regulation. The zero-pressure valve dynamically regulates the pressure of the raw water entering the water purification module through its own pressure regulation structure. When the raw water pressure is higher than the preset pressure range, the zero-pressure valve increases the pressure relief opening to reduce the water pressure; when the raw water pressure is lower than the preset pressure range, the zero-pressure valve decreases the pressure relief opening to increase the water pressure, ultimately stabilizing the raw water pressure entering the water purification module within the system's preset pressure range. This pressure regulation process is real-time dynamic control, continuously ensuring stable raw water pressure. For example, the preset raw water pressure range of the water purification system is 0.2-0.4MPa. When the raw water pressure rises to 0.5MPa due to fluctuations in the pipeline network, the zero-pressure valve automatically increases the pressure relief opening to reduce the water pressure to 0.35MPa. When the raw water pressure drops to 0.1MPa, the zero-pressure valve decreases the pressure relief opening to raise the water pressure to 0.25MPa, so that the raw water pressure entering the water purification module is always kept within the preset range.

[0068] And / or, S62. Before controlling the heat exchange module to heat and homogenize the purified water, control the diaphragm pump in the heat exchange module to run at a second preset speed for a second preset time to drive the purified water to circulate in the system to preheat the system pipeline.

[0069] Specifically, for step S62, before the water purification system controls the heat exchange module to perform heating and homogenization treatment on the purified water, the water purification system automatically triggers the pipeline preheating process and sends a preheating start command to the diaphragm pump in the heat exchange module. After receiving the command, the diaphragm pump enters the standby state.

[0070] The diaphragm pump starts operating at the second preset speed set by the system according to the command, and the operating time strictly follows the second preset duration set by the system. Both the speed and duration are pre-calibrated based on parameters such as the length and volume of the system pipeline to meet the preheating requirements of the pipeline. During the operation of the diaphragm pump, the purified water from the water purification module circulates in the internal pipeline of the heat exchange module and in the system pipeline connected to the heat exchange module. The circulating purified water exchanges heat with the inner wall of the pipeline, gradually increasing the overall temperature of the pipeline and completing the preheating operation of the system pipeline. After preheating is completed, the diaphragm pump stops operating, and the system immediately starts the heating and homogenization operation of the heat exchange module. For example, the second preset speed of the water purification system is 1000 r / min and the second preset duration is 40 seconds. Before heat exchange, the diaphragm pump runs at 1000 r / min for 40 seconds, driving the purified water to circulate in the heat tank and connecting pipes of the heat exchange module, raising the temperature of the inner wall of the pipe from the original room temperature of 20°C to 32°C. After the pipe preheating is completed, the diaphragm pump stops running, and the heat exchange module begins to heat and homogenize the purified water.

[0071] This embodiment uses a zero-pressure valve to dynamically regulate the pressure of the raw water entering the water purification module, ensuring that the pressure remains stable within a preset range. This effectively prevents fluctuations in raw water pressure from affecting the purification efficiency and stability of the purified water output, providing a stable source of purified water with consistent flow and pressure for the subsequent heat exchange module. This guarantees the basic operating conditions for temperature control during the heat exchange process. The preheating of the pipeline before heat exchange is achieved by using a diaphragm pump to drive the purified water circulation and raise the pipeline temperature. This prevents cold pipelines from causing additional heat loss to the subsequently heated purified water, ensuring that the heating and homogenization operations of the heat exchange module are in a stable thermal environment from the initial stage. This improves heating efficiency while reducing initial water temperature deviations caused by pipeline heat loss. These two pre-regulation operations can be performed individually or simultaneously, laying a solid foundation for precise temperature control of the heat exchange module from both the perspectives of water source pressure and pipeline thermal environment. This optimizes the overall stability of the water purification system and makes subsequent heating and homogenization operations more controllable.

[0072] Optionally, in some embodiments, the water purification system control method further includes: S71. Obtain the user's water usage mode command through the water outlet module. The water usage mode command includes formula preparation mode, tea brewing mode, or boiling water mode. Specifically, in step S71, the water outlet module is equipped with interactive and detection components for mode selection and signal acquisition. Users can select the desired water usage mode through physical buttons, touch panels, or intelligent interactive interfaces on the water outlet module. The water outlet module will collect the user's mode selection signal in real time and generate a corresponding water usage mode command. This command will be transmitted to the system control unit immediately. The command types include three core types: formula preparation mode, tea brewing mode, and boiling water mode, providing a clear execution basis for subsequent temperature control strategy matching. The entire acquisition and transmission process is delay-free, ensuring timely temperature control response. For example, if a user needs to prepare formula for an infant, they can click the "formula preparation mode" button on the faucet module's touch panel. The water outlet module will immediately collect the selection signal, generate a formula preparation mode command, and transmit it synchronously to the system control unit. If the user wants to brew tea, they can click the "tea brewing mode" button, and the water outlet module will generate and transmit a tea brewing mode command accordingly.

[0073] S72. Based on the water usage mode command, determine the corresponding target water temperature, heating strategy and homogenization strategy, and control the heat exchange module to execute the heating strategy and homogenization strategy accordingly; Specifically, for step S72, the system control unit has a built-in logic for precisely matching the water usage mode with temperature control parameters and execution strategies. Upon receiving a water usage mode command, it automatically retrieves the pre-calibrated target water temperature for that mode and matches the corresponding heating and homogenization strategies. The heating strategy includes core parameters such as the heater's operating power, heating stage, and heating rate, while the homogenization strategy includes core parameters such as the diaphragm pump's operating speed, running time, and circulation frequency. The control unit then sends an execution command containing the above parameters to the heat exchange module. After receiving the command, the heat exchange module strictly follows the matched heating strategy to perform water purification heating and simultaneously performs water temperature homogenization according to the matched homogenization strategy, achieving customized coordinated operation of heating and homogenization.

[0074] For example, after receiving a milk-making mode command, the control unit retrieves the corresponding preset target water temperature of 45℃. The matching heating strategy is "low-power (1000W) stepped heating, with two-stage heating, and low-speed heating to avoid overheating." The matching homogenization strategy is "the diaphragm pump runs at a low speed of 800r / min for 30 seconds to fully homogenize the water temperature and ensure uniformity." Then, it sends an execution command to the heat exchange module, which completes the heating and homogenization according to this strategy. When receiving a tea-brewing mode command, it retrieves the 85℃ target... The water temperature is matched with a heating strategy of "medium power (1800W) continuous heating, medium heating rate" and a homogenization strategy of "diaphragm pump running at medium speed of 1200r / min for 20 seconds" and executed. When the boiling water mode command is received, the target water temperature of 98℃ is selected, and a heating strategy of "high power (2500W) full speed heating, rapid heating to the target value" and a homogenization strategy of "diaphragm pump running at high speed of 1800r / min for 10 seconds to quickly homogenize the water temperature in the tank and avoid uneven local boiling" are matched and executed.

[0075] This embodiment identifies different user water usage mode commands to achieve precise matching and customized execution of target water temperature with heating and homogenization strategies. This allows the temperature control operation of the heat exchange module to meet the core temperature control needs of different water usage scenarios such as making milk, brewing tea, and boiling water. It avoids the problem that a single heating and homogenization strategy cannot adapt to the temperature control of multiple scenarios, improves the accuracy and adaptability of the water temperature output under different water usage scenarios, effectively optimizes the user's different water intake experience, and makes the use of the water purification system more in line with the diverse drinking water needs in real life.

[0076] In a specific embodiment, after the water outlet module receives the user's water usage mode command (making milk, brewing tea, boiling water), the system matches the corresponding preferred target water temperature, heating strategy, and homogenization strategy, as follows: Formula preparation mode: The target water temperature is 45℃. The heating strategy is 1000W low-power stepped heating. The homogenization strategy is to run a small cycle for 10 seconds at a speed of 800r / min. The diaphragm pump runs at an ultra-low speed of 500r / min throughout the process to avoid overheating. Tea brewing mode: The preferred target water temperature is 85℃, the heating strategy is 1800W medium power stepped heating, the homogenization strategy is 1200r / min speed to perform a 10-second small circulation, and the diaphragm pump runs at a low speed of 800r / min when dispensing water. Boiling water mode: The preferred target water temperature is 98℃. The heating strategy is 2500W high-power full-speed heating. The homogenization strategy is 1800r / min high speed to perform a 10-second small circulation. When taking water, the diaphragm pump runs at a low speed of 1000r / min to prevent uneven boiling in some areas.

[0077] Optionally, in some embodiments, step S3, "controlling the outlet water module to acquire outlet water temperature information and sending an adjustment command to the heat exchange module based on the comparison result between the outlet water temperature information and the target water temperature," further includes: S301. Establish a closed-loop feedback control model for water temperature; Specifically, for step S301, a dedicated water temperature closed-loop feedback control model is pre-built based on its own hardware characteristics and temperature control conditions. This model incorporates core parameters such as the heating efficiency and power adjustment gradient of the heater in the heat exchange module, the speed adjustment range and homogenization efficiency of the diaphragm pump, as well as the heat loss coefficient and water temperature transfer delay characteristics of the system pipeline. It also incorporates built-in algorithm logic for water temperature deviation judgment, control parameter matching, and command output. The model can automatically calculate and match the optimal heater power adjustment value and diaphragm pump speed adjustment value based on the input water temperature feedback data, providing core algorithm support for subsequent dynamic temperature control adjustment. Furthermore, the model can perform adaptive calibration of basic parameters based on the real-time operating status of the system to ensure adaptability. For example, by combining the power adjustment range of the heater (0-3000W), the speed adjustment range of the diaphragm pump (500-2000r / min), and the heat loss coefficient of the pipeline (approximately 0.5℃ / m), a closed-loop feedback control model for water temperature is constructed. The model is pre-set with power and speed adjustment gradients corresponding to different water temperature deviation ranges such as ±1℃, ±2℃, and ±3℃ to ensure accurate output of control commands.

[0078] S302. Input the outlet water temperature information as a feedback quantity into the water temperature closed-loop feedback control model; Specifically, for step S302, during the entire water intake process, the water outlet module continuously collects real-time water temperature information. This information includes the real-time value of the water temperature, the trend of water temperature change, and the deviation fluctuation range. The system uses this complete water temperature information as the core feedback quantity and inputs it into the established water temperature closed-loop feedback control model in a high-frequency manner. There is no data delay in the input process, and the feedback quantity is updated in real time with the dynamic changes of the water temperature, allowing the model to continuously grasp the real water temperature status at the outlet and provide a real-time and accurate data source for the model's instruction calculation.

[0079] For example, if the user sets the target water temperature to 85℃, the water outlet module collects real-time values ​​of the outlet water temperature (83℃, 82.5℃, and 82℃) once per second during the water intake process. At the same time, it captures the trend of the water temperature decreasing slightly. The water purification system uses these water temperature values ​​and trends as feedback quantities and inputs them into the water temperature closed-loop feedback control model in real time.

[0080] S303. By outputting control commands through the water temperature closed-loop feedback control model, the heating power of the heater and the speed of the diaphragm pump in the heat exchange module are dynamically adjusted. Specifically, in step S303, after receiving the real-time outlet water temperature feedback, the water temperature closed-loop feedback control model compares it with the preset target water temperature. Combining the built-in algorithm and the system's core parameters, it automatically determines the degree and trend of water temperature deviation and quickly calculates the appropriate heater power adjustment parameters and diaphragm pump speed adjustment parameters, then outputs the corresponding control commands. After receiving the commands, the heat exchange module immediately adjusts the heater's operating power according to the commands, and simultaneously adjusts the diaphragm pump's operating speed. The entire process is a dynamic, cyclical closed-loop operation: the model continuously receives new outlet water temperature feedback, continuously calculates and outputs new control commands until the outlet water temperature stabilizes and meets the preset conditions, achieving coordinated, dynamic, and precise adjustment of the heater power and diaphragm pump speed.

[0081] For example, after receiving feedback on the deviation between the target water temperature of 85℃ and the real-time outlet water temperature of 82℃, and detecting the trend of continuous temperature decline, the model calculates using its built-in algorithm and outputs control commands to "increase the heater power from 1800W to 2500W and the diaphragm pump speed from 800r / min to 1500r / min". After the heat exchange module executes the commands, the outlet water temperature gradually rises. The model continuously receives real-time feedback values ​​of 82.5℃, 83℃, and 84℃, and outputs fine-tuning commands in sequence according to the temperature rise trend: "reduce the heater power to 2200W and the diaphragm pump speed to 1200r / min" and "reduce the heater power to 2000W and the diaphragm pump speed to 1000r / min". Finally, the outlet water temperature stabilizes at 85℃, and the model maintains the current control parameters, achieving dynamic and stable control.

[0082] This embodiment establishes a dedicated closed-loop feedback control model for water temperature, integrating the outlet water temperature information as a real-time feedback quantity into the temperature control process. This transforms the adjustment of heater power and diaphragm pump speed from a single fixed command output into a dynamic, coordinated, and precise adjustment based on the real-time water temperature status. It constructs a complete temperature control closed loop of "detection-feedback-calculation-adjustment-re-detection," effectively solving the problems of command lag, lack of targeted adjustment, and uncoordinated power and speed in traditional control methods. This improves the timeliness, accuracy, and intelligence of water temperature control, enabling rapid response to subtle changes in outlet water temperature and adaptive fine-tuning, avoiding the accumulation and expansion of water temperature deviations, and continuously ensuring that the outlet water temperature stably matches the target water temperature, thereby improving the stability and consistency of water temperature throughout the entire water intake process of the water purification system.

[0083] In a specific embodiment, this embodiment can also establish a closed-loop feedback control model for water temperature. The control model incorporates core parameters such as the heater's power adjustment range of 0-3000W, the diaphragm pump's speed adjustment range of 500-2000r / min, and the pipeline heat loss coefficient of 0.5℃ / m. Simultaneously, it presets the aforementioned preferred threshold values, speed, power gradient, and other data. During water intake, the water purification system inputs the real-time value and trend of the outlet water temperature as feedback quantities into the model at a frequency of once per second. The model quickly calculates the degree of deviation and trend through its built-in algorithm, dynamically outputting adjustment commands for the heater power and diaphragm pump speed. For example, if the target water temperature is 85℃, and the real-time outlet water temperature continuously drops from 84℃ to 82℃, the model determines that the water temperature is decreasing slightly and continuously. It first outputs the instruction to "increase the heater power from 1800W to 2400W and the diaphragm pump speed from 800r / min to 1200r / min". When the outlet water temperature rises back to 84℃, the model makes real-time fine adjustments and outputs the instruction to "reduce the heater power to 2000W and the diaphragm pump speed to 1000r / min". When the outlet water temperature stabilizes at 85℃±0.5℃, the model outputs the instruction to maintain the current parameters, realizing a closed-loop control of "detection-feedback-calculation-adjustment-redetection".

[0084] This application provides a water purification system control method, applied to a water purification system including a water purification module, a heat exchange module, and a water outlet module. The control method first controls the water purification module to complete the purification treatment of raw water, providing a foundation of qualified and stable purified water for subsequent water temperature control, avoiding interference from water impurities and other factors on the heat exchange and temperature control process. Then, the heat exchange module simultaneously heats and homogenizes the purified water, gradually bringing the purified water temperature closer to the target water temperature from the source of temperature control, achieving basic water temperature regulation. Subsequently, the water outlet module continuously acquires the outlet water temperature information and compares this information with the target water temperature... Temperature comparison is used to send targeted adjustment commands to the heat exchange module based on the comparison results. This dynamically adjusts the heating and / or homogenization operation of the heat exchange module until the outlet water temperature meets the preset conditions. Through linkage control, the temperature control operation of the heat exchange module can accurately match the actual outlet water temperature, avoiding the water temperature deviation problem that is easy to occur in single heat exchange control. This forms an adaptive dynamic temperature control adjustment mechanism, realizing closed-loop control from water source purification to heat exchange control and then to outlet water feedback adjustment. This effectively improves the accuracy and stability of the outlet water temperature, ensuring that the outlet water temperature can stably meet the preset temperature conditions and meet the diverse water needs of users.

[0085] In one embodiment, a water purification system is provided, comprising: a control module 400, a water purification module 100, a heat exchange module 200, and a water outlet module 300. The control module 400 is used to control the operation of the water purification module 100, the heat exchange module 200, and the water outlet module 300. The control module 100 includes: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it performs the following steps: The water purification module is controlled to purify the raw water and produce purified water; The heat exchange module is controlled to heat and homogenize the purified water so that the purified water temperature reaches the target water temperature. The system controls the water outlet module to acquire water outlet temperature information and sends an adjustment command to the heat exchange module based on the comparison between the water outlet temperature information and the target water temperature, so as to adjust the operating state of the heating treatment and / or the homogenization treatment until the water outlet temperature meets the preset conditions.

[0086] This embodiment utilizes the coordinated operation of the water purification module, heat exchange module, and water outlet module to dynamically adjust the heating and homogenization operation of the heat exchange module based on the water outlet temperature information. This achieves closed-loop regulation from water source purification to heat exchange control and then to water outlet feedback regulation, effectively improving the accuracy and stability of the water outlet temperature. It ensures that the water outlet temperature can stably meet the preset temperature conditions and satisfy the diverse water needs of users.

[0087] In one embodiment, a computer-readable storage medium is provided that stores a computer program, which, when executed by a processor, performs the following steps: The water purification module is controlled to purify the raw water and produce purified water; The heat exchange module is controlled to heat and homogenize the purified water so that the purified water temperature reaches the target water temperature. The system controls the water outlet module to acquire water outlet temperature information and sends an adjustment command to the heat exchange module based on the comparison between the water outlet temperature information and the target water temperature, so as to adjust the operating state of the heating treatment and / or the homogenization treatment until the water outlet temperature meets the preset conditions.

[0088] This embodiment utilizes the coordinated operation of the water purification module, heat exchange module, and water outlet module to dynamically adjust the heating and homogenization operation of the heat exchange module based on the water outlet temperature information. This achieves closed-loop regulation from water source purification to heat exchange control and then to water outlet feedback regulation, effectively improving the accuracy and stability of the water outlet temperature. It ensures that the water outlet temperature can stably meet the preset temperature conditions and satisfy the diverse water needs of users.

[0089] It should be noted that the functions or steps that can be implemented by the computer-readable storage medium or computer device described above can be referred to the relevant descriptions on the server side and client side in the foregoing method embodiments. To avoid repetition, they will not be described one by one here.

[0090] 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.

[0091] 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.

[0092] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention 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 the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A water purification system control method characterized by, Applied to a water purification system, the water purification system includes a water purification module, a heat exchange module, and a water outlet module, and the control method of the water purification system includes: The water purification module is controlled to purify the raw water and produce purified water; The heat exchange module is controlled to heat and homogenize the purified water so that the purified water temperature reaches the target water temperature. The system controls the water outlet module to acquire water outlet temperature information and sends an adjustment command to the heat exchange module based on the comparison between the water outlet temperature information and the target water temperature, so as to adjust the operating state of the heating treatment and / or the homogenization treatment until the water outlet temperature meets the preset conditions.

2. The water purification system control method according to claim 1, characterized in that, The control of the heat exchange module to heat and homogenize the purified water to achieve the target water temperature includes: Obtain the initial water temperature of the purified water; The target temperature for the first stage of heating is determined based on the difference between the target water temperature and the initial water temperature. The heater in the heat exchange module is controlled to heat the purified water to the target temperature of the first stage of heating. Once the purified water reaches the target temperature of the first stage of heating, the diaphragm pump in the heat exchange module is started, and the diaphragm pump is controlled to run at a first preset speed for a first preset time, so that the purified water circulates in the water purification system to equalize the water temperature. The heater is controlled to heat the homogenized purified water to a second preset temperature, which is higher than the target water temperature.

3. The water purification system control method according to claim 1, characterized in that, The control module acquires the outlet water temperature information and, based on the comparison between the outlet water temperature information and the target water temperature, sends an adjustment command to the heat exchange module, including: During the water intake process, the real-time water temperature is obtained through the first temperature sensor in the water outlet module; When the deviation between the real-time outlet water temperature and the target water temperature exceeds a first threshold, a command to adjust the heater power is sent to the heat exchange module. When the deviation between the real-time outlet water temperature and the target water temperature exceeds a second threshold, an instruction to adjust the diaphragm pump speed is sent to the heat exchange module, wherein the second threshold is greater than the first threshold.

4. The water purification system control method according to claim 1, characterized in that, The method further includes: The water temperature inside the heat exchange module is obtained by an NTC temperature sensor installed inside the heat exchange module; The water temperature at the outlet is obtained through the water outlet module; Calculate the temperature difference between the outlet water temperature and the water temperature inside the heat exchange module; When the temperature difference is greater than the preset temperature difference threshold, a command to start the diaphragm pump is sent to the heat exchange module first to equalize the water temperature. When the temperature difference is less than or equal to the preset temperature difference threshold, a command to adjust the heater power is sent to the heat exchange module to adjust the outlet water temperature.

5. The water purification system control method according to claim 1, characterized in that, The method further includes: Determine the water supply flow rate based on the target water temperature; The inlet-outlet and outlet regulating valve is controlled to supply water to the heat exchange module at the specified water supply flow rate in order to maintain a stable water level in the heat exchange module.

6. The water purification system control method according to claim 1, characterized in that, The method further includes: The zero-pressure valve in the water purification module is controlled to regulate the pressure of the raw water entering the water purification module so that the pressure of the raw water is stabilized within a preset pressure range. And / or, before controlling the heat exchange module to heat and homogenize the purified water, the diaphragm pump in the heat exchange module is controlled to run at a second preset speed for a second preset time to drive the purified water to circulate in the purified water system in order to preheat the pipeline of the purified water system.

7. The water purification system control method according to claim 1, characterized in that, The method further includes: The user's water usage mode command is obtained through the water outlet module. The water usage mode command includes formula preparation mode, tea brewing mode, or boiling water mode. Based on the water usage mode command, the corresponding target water temperature, heating strategy, and homogenization strategy are determined, and the heat exchange module is controlled to execute the heating strategy and homogenization strategy accordingly.

8. The water purification system control method according to claim 1, characterized in that, The method of controlling the water outlet module to acquire the water outlet temperature information and sending an adjustment command to the heat exchange module based on the comparison result of the water outlet temperature information and the target water temperature also includes: Establish a closed-loop feedback control model for water temperature; The outlet water temperature information is input as a feedback quantity into the water temperature closed-loop feedback control model. The closed-loop feedback control model for water temperature outputs control commands to dynamically adjust the heating power of the heater and the speed of the diaphragm pump in the heat exchange module.

9. A water purification system, characterized in that, The water purification system includes: a control module, a water purification module, a heat exchange module, and a water outlet module. The control module is used to control the operation of the water purification module, the heat exchange module, and the water outlet module. The control module includes: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the water purification system control method as described in any one of claims 1 to 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 water purification system control method as described in any one of claims 1 to 8.

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