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

Abstract

This application discloses a water purification system control method, a water purification system, and a storage medium, applied 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: acquiring a user-set target water temperature and determining a preheating temperature based on the target water temperature; controlling a heating device to heat the water in the heat exchange module to the preheating temperature; controlling the heat exchange module to output hot water to the water outlet module and acquiring the terminal water temperature detected in real time by a second temperature sensor; and dynamically adjusting the heating power of the heating device and / or the flow rate of the water purification system's flow regulation device based on a comparison between the terminal water temperature and the target water temperature, so that the terminal water temperature reaches the target water temperature. This application enables the terminal water outlet temperature of the water purification system to accurately reach the user-set target water temperature, effectively improving the water outlet temperature control accuracy of the water purification system.

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, thereby meeting users' needs for hot water at different temperatures.

[0003] The existing water purification system controls water temperature by obtaining the user-set target water temperature, controlling the heating device in the heat exchange module to heat the water in the module to the target temperature, and relying on the temperature detection element within the heat exchange module to control the water temperature during the heating process. The hot water from the heat exchange module is then transported to the outlet module. However, in actual use, due to objective factors such as heat loss during hot water transport, the actual outlet water temperature of the water purification system using the existing control method often deviates from the user-set target water temperature.

[0004] In summary, the existing water temperature control methods of water purification systems cannot be adapted to the actual outlet water temperature at the terminal, resulting in a deviation between the outlet water temperature and the target water temperature set by the user, and the water temperature control accuracy is difficult to meet the 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 problem that the existing water temperature control method of the water purification system cannot be adapted to the actual outlet water temperature at the terminal, resulting in a deviation between the outlet water temperature and the target water temperature set by the user.

[0006] To address the aforementioned technical problems, this application provides a water purification system control method, applied to a water purification system. The water purification system includes a water purification module, a heat exchange module, and a water outlet module. The heat exchange module is equipped with a first temperature sensor and a heating device, and the water outlet module is equipped with a second temperature sensor. The water purification system control method includes: Obtain the target water temperature set by the user, and determine the preheating temperature based on the target water temperature; The heating device is controlled to heat the water in the heat exchange module to the preheating temperature; The heat exchange module is controlled to output hot water to the water outlet module, and the terminal water temperature detected in real time by the second temperature sensor is obtained. Based on the comparison between the terminal water temperature and the target water temperature, the heating power of the heating device and / or the flow rate of the flow regulating device of the water purification system are dynamically adjusted so that the terminal water temperature reaches the target water temperature.

[0007] Optionally, in some embodiments of this application, obtaining the user-set target water temperature and determining the preheating temperature based on the target water temperature includes: Receive the target water temperature set by the user through the input interface; Obtain the pipeline length information and ambient temperature information of the water purification system; Based on the pipeline length information and the ambient temperature information, the corresponding temperature compensation value is matched from the preset compensation value mapping table; The matched temperature compensation value is used as the preset temperature compensation value; The target water temperature and the temperature compensation value are added together to calculate the preheating temperature.

[0008] Optionally, in some embodiments of this application, controlling the heating device to heat the water in the heat exchange module to the preheating temperature includes: The heating device is activated to heat the water in the heat exchange module; The water temperature inside the tank detected by the first temperature sensor is acquired in real time. When the water temperature inside the tank reaches the preheating temperature, the heating device is controlled to stop heating or enter a constant temperature standby state.

[0009] Optionally, in some embodiments of this application, dynamically adjusting the heating power of the heating device and / or the flow rate of the flow regulating device of the water purification system based on the comparison result between the terminal water temperature and the target water temperature, so as to make the terminal water temperature reach the target water temperature, includes: Calculate the temperature difference between the terminal water temperature and the target water temperature; Determine whether the temperature difference value falls within a preset deviation range; When the temperature difference is lower than the lower limit of the preset deviation range, the heating control mode is executed to increase the heating power of the heating device and decrease the cold water flow rate of the flow regulating device. When the temperature difference value is higher than the upper limit of the preset deviation range, the cooling control mode is executed, and the cold water flow rate of the flow regulating device is increased; When the temperature difference falls within the preset deviation range, the current heating power of the heating device and the current flow rate of the flow regulating device are maintained.

[0010] Optionally, in some embodiments of this application, the heating control mode includes: determining a first heating power adjustment amount and a first cold water flow rate adjustment amount based on the temperature difference value, wherein the first heating power adjustment amount is positively correlated with the temperature difference value, and the first cold water flow rate adjustment amount is positively correlated with the temperature difference value; increasing the heating power of the heating device according to the first heating power adjustment amount; and decreasing the cold water flow rate of the flow rate adjustment device according to the first cold water flow rate adjustment amount. The cooling control mode includes: determining a second cold water flow rate adjustment amount based on the temperature difference value, wherein the second cold water flow rate adjustment amount is positively correlated with the temperature difference value; increasing the cold water flow rate of the flow rate adjustment device according to the second cold water flow rate adjustment amount; and repeatedly performing the operation of increasing the cold water flow rate until the terminal water temperature drops to fall within the preset deviation range.

[0011] Optionally, in some embodiments of this application, the water purification system further includes a circulation pump disposed between the heat exchange module and the outlet water module. Then, dynamically adjusting the heating power of the heating device and / or the flow rate of the flow regulation device of the water purification system based on the comparison between the terminal water temperature and the target water temperature, so that the terminal water temperature reaches the target water temperature, includes: Obtain the current rotational speed of the circulating pump; Based on the comparison between the terminal water temperature and the target water temperature, the target speed adjustment direction of the circulating pump is determined; When the terminal water temperature is lower than the target water temperature, the speed of the circulation pump is reduced by a preset step size; When the terminal water temperature is higher than the target water temperature, the speed of the circulation pump is increased by a preset step size; After adjusting the speed of the circulating pump, the terminal water temperature is reacquired, and the adjustment continues based on the reacquired terminal water temperature until the deviation between the terminal water temperature and the target water temperature falls within the preset range.

[0012] Optionally, in some embodiments of this application, after dynamically adjusting the heating power of the heating device and / or the flow rate of the flow regulating device of the water purification system based on the comparison result between the terminal water temperature and the target water temperature, the method further includes: Determine whether the difference between the terminal water temperature and the target water temperature continuously falls within a preset deviation range and reaches a preset duration; When the judgment result is yes, the water outlet valve of the water outlet module is opened. After the outlet valve is opened, the process of acquiring and monitoring the terminal water temperature, as well as the dynamic adjustment process of the heating power and / or flow rate, are continuously executed to maintain the stability of the outlet water temperature. When a water outage command is received, the outlet valve is closed.

[0013] Optionally, in some embodiments of this application, before obtaining the user-set target water temperature and determining the preheating temperature based on the target water temperature, the method further includes: Obtain the first initial temperature value detected by the first temperature sensor and the second initial temperature value detected by the second temperature sensor; Calculate the initial deviation between the first initial temperature value and the second initial temperature value; Store the initial deviation value as calibration parameters; During the subsequent acquisition and monitoring of the terminal water temperature, the terminal water temperature detected by the second temperature sensor is corrected according to the calibration parameters.

[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 preheating temperature is determined based on the target water temperature set by the user. Then, the heating device of the heat exchange module is controlled to heat the water to the preheating temperature, reserving a basis for adjusting the temperature changes of hot water during transportation. This breaks away from the single control logic of existing control methods that only use the target water temperature as the heating endpoint. Simultaneously, when the heat exchange module outputs hot water to the water outlet module, the terminal water temperature at the water outlet module is acquired in real time. Based on the comparison between the terminal water temperature and the target water temperature, the heating power of the heating device and / or the flow rate of the system flow regulating device are dynamically adjusted. This allows the water temperature control of the water purification system to no longer rely solely on the temperature data within the heat exchange module, but to be specifically adjusted according to the actual terminal water temperature of the user's water usage, thereby effectively and promptly correcting any deviation between the terminal water temperature and the target water temperature. In summary, this application effectively corrects the deviation between the terminal water temperature and the target water temperature by making targeted adjustments to the heating and flow processes, ultimately achieving the effect of the terminal water temperature accurately reaching the user's set target water temperature. This improves the overall control accuracy of the water purification system for the outlet water temperature and solves the problem of deviation between the terminal outlet water temperature and the target water temperature in existing water purification systems. 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 2As shown, the water purification system includes a water purification module 100, a heat exchange module 200, and an outlet module 300. The heat exchange module 200 is equipped with a first temperature sensor and a heating device, and the outlet module 300 is equipped with a second temperature sensor. The water purification system also includes a flow regulating device. The heat exchange module includes a one-inlet, three-outlet pressure regulating valve, which has an input end, a water supply branch end, a heat exchange inlet branch end, and a cold water branch end. The input end is connected to the water purification module, the water supply branch end is connected to the water supply circuit (0 / 2L / min constant flow), the heat exchange inlet branch end is connected to the heat exchange inlet circuit (0 / 1 / 1.5 / 2L / min constant flow), and the cold water branch end is connected to the cold water circuit (0~2L / min pressure regulation). The heat exchange module is used to pump the pure water pumped by the water purification module to the outlet module 103 through the target water circuit.

[0025] The water purification module 100 is used to provide pure water that meets drinking standards for the entire water system. It is equipped with a booster pump, which provides power for the water supply of the entire water system, ensuring stable water flow in each water path. Its output end is connected to the input end of a one-in-three-out pressure regulating valve to realize the distribution of water to each path.

[0026] The heat exchange module 200 serves as the core control and heat exchange unit of the water system. It is used to realize water circuit switching, water source temperature regulation, water source storage and circulating temperature uniformity. It connects the water purification module and the water outlet module and can deliver the pure water pumped by the water purification module to the water outlet module through the target water circuit.

[0027] The water outlet module 300 is used to receive water that has been treated by the water purification module and regulated (cold water, hot water, warm water) by the heat exchange module, and output it to users to meet their various water needs. Its input terminals are connected to the cold water branch of the one-in-three-out pressure regulating valve and the hot water passage after mixing by the heat exchange module.

[0028] Optionally, in some embodiments of this application, the heat exchange module further includes a heat storage component, a heating component, a heat exchange component, and a circulation pump. One end of the heat storage component is connected to the water supply branch of a three-inlet pressure regulating valve via a water supply pump, and the other end is connected to the hot water end of the heat exchange component via a hot water supply line. This storage component stores water to provide a medium for hot water heating. It is linked to the three-inlet pressure regulating valve; when the water supply in the heat storage component is insufficient, water can be replenished through the water supply line to ensure smooth heating and prevent heating interruptions due to insufficient water. The heating component is installed in conjunction with the heat storage component to heat the water in the heat storage component to a preset temperature, providing hot water to users and ensuring that the hot water temperature meets the standard. The heat exchange component works in conjunction with the heating component, the circulation pump, and the temperature monitoring component to assist in the precise adjustment of the water source temperature, ensuring stable outlet water temperature and improving temperature control accuracy. The circulating pump is equipped with a heat storage component to drive the water circulation within the heat storage component, thereby achieving water temperature uniformity, avoiding uneven water temperature within the heat storage component, ensuring heat exchange effect and stable outlet water temperature, and reducing water temperature fluctuations.

[0029] Specifically, the end of the water supply line furthest from the one-in-three-out pressure regulating valve is connected to the heat storage component via a water supply pump to replenish the water source for the heat storage component; the end of the heat exchange inlet water line furthest from the one-in-three-out pressure regulating valve is connected to the heat storage component to provide heat exchange inlet water for the heat storage component; the end of the cold water line furthest from the one-in-three-out pressure regulating valve is directly connected to the cold water end of the heat exchange component, and the outlet end of the heat exchange component is connected to the outlet module via a zone temperature valve, which can directly deliver room temperature pure water from the water purification module to the outlet module. When the water usage scenario is for rapid water access such as drinking water at room temperature, the system can switch to the cold water circuit with a one-in-three-out pressure regulating valve. The valve maintains a stable flow rate in the pipeline, enabling rapid output of pure water at room temperature. When the water usage scenario is for stable hot water access such as making tea or formula, the valve switches to the heat exchange water circuit. The heating element heats the water in the heat storage component to the set temperature, and the circulation pump starts to circulate and homogenize the water. In conjunction with the heat exchange component and temperature monitoring device, the outlet water temperature is adjusted in real time to ensure that the outlet water temperature accurately matches the user's needs.

[0030] Optionally, in some embodiments of this application, the water purification module further includes a pre-filtration unit, a reverse osmosis unit, a flow monitoring unit, a water quality monitoring unit, a pressure monitoring unit, and a wastewater treatment unit. The pre-filtration unit includes a pre-PC filter cartridge and a post-CB filter cartridge, used for preliminary filtration of large particulate impurities, residual chlorine, and off-colors and odors in the raw water, protecting subsequent high-precision filter cartridges; the reverse osmosis unit is an RO reverse osmosis filter cartridge, used for deep filtration of heavy metals, bacteria, viruses, etc., in the raw water to produce direct-drinking grade pure water. Its pure water end is connected to the outlet end of the pre-filtration unit to form a zero-staple water recirculation structure, used to dilute the first cup of concentrated water and improve the quality of the first cup of effluent; the flow monitoring unit is a flow meter connected in series in the front pipeline of the booster pump, used to monitor the inlet water flow in real time and provide feedback on the water production status; water... The water quality monitoring unit includes an NTC temperature sensor and a TDS sensor, connected in series in the pure water pipeline, to monitor the temperature and TDS value of the pure water, providing data support for subsequent temperature control and water quality monitoring; the pressure monitoring unit is a high-pressure switch, connected in series in the pure water pipeline, to monitor the system pressure and ensure the safe operation of the system; the wastewater treatment unit includes a parallel wastewater valve, a 2000cc normally closed wastewater valve, and an electrolytic sterilization module, to treat the concentrated water produced by the reverse osmosis unit, maintain the working environment of the RO filter, and sterilize the discharged water to improve water safety.

[0031] Optionally, in some embodiments of this application, the heat exchange module further includes a zone temperature valve, a water supply pump, a liquid level monitoring unit, a temperature monitoring unit, and an exhaust structure. The zone temperature valve is connected in series at the outlet of the heat exchange component to adjust the mixing ratio of hot and cold water and precisely control the outlet water temperature; the water supply pump is connected in series in the water supply path to precisely supply water to the heat storage component and maintain a stable liquid level in the tank; the liquid level monitoring unit is installed in conjunction with the heat storage component to monitor the liquid level in the tank and ensure the safety of the water supply and heating process; the temperature monitoring unit is an NTC temperature sensor, which is installed in the heat storage component, at the inlet of the heat exchange component, and at the outlet of the module to monitor the water temperature at each node in real time and provide data for closed-loop temperature control; the exhaust structure is connected to the heat storage component to discharge air from the tank, avoid air blockage, and ensure smooth water flow and heating efficiency.

[0032] Optionally, in some embodiments of this application, the water outlet module further includes a terminal heating component, a pressure boosting valve, and a terminal temperature monitoring unit. The terminal heating component is a thick-film heater connected in series in the hot water branch pipeline to reheat the hot water delivered to the outlet end, compensate for heat loss in the pipeline, and ensure that the outlet water temperature meets the standard. The pressure boosting valve is connected in series in the hot water branch pipeline to increase the outlet water pressure, improve the outlet water flow and user experience. The terminal temperature monitoring unit is an NTC temperature sensor, which is respectively set at the inlet and outlet ends of the hot water branch to monitor the terminal water temperature in real time, providing direct data support for closed-loop temperature control.

[0033] This application provides a water purification system control method; please refer to the following: Figure 1and 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. Obtain the target water temperature set by the user, and determine the preheating temperature based on the target water temperature; Specifically, in step S1, the user-inputted target water temperature is received through the operation interaction unit configured in the water outlet module (such as the faucet control panel, the associated smart terminal control interface, etc.). This water temperature serves as the temperature benchmark for the user's actual water usage needs. For example, the user can set the corresponding temperature according to different water usage scenarios: 45℃ when preparing infant formula, 95℃ when brewing tea, and room temperature for daily direct drinking. This step is the initial input for the entire control process, clarifying the target value for subsequent water temperature regulation.

[0034] S2. Control the heating device to heat the water in the heat exchange module to the preheating temperature; Specifically, for step S2, based on the obtained target outlet water temperature, and combined with preset parameters such as the heat loss characteristics of the pipeline during the hot water's journey from the heat exchange module to the outlet module, the current ambient temperature, and the water flow rate, the preheating temperature within the heat exchange module is calculated and determined. This preheating temperature must be higher than the target outlet water temperature to allow for adjustment margins to accommodate temperature decay during hot water delivery. For example, when the user sets the target outlet water temperature to 95℃, considering the 2-3℃ heat loss during the pipeline journey to the outlet module, the water purification system sets the preheating temperature to 97-98℃; when the user sets the target outlet water temperature to 45℃, the system sets the preheating temperature to 47℃, ensuring sufficient adjustment space for the terminal outlet water temperature to match the target value.

[0035] S3. Control the heat exchange module to output hot water to the water outlet module, and obtain the terminal water temperature detected in real time by the second temperature sensor; Specifically, in step S3, the water purification system activates the heating device configured within the heat exchange module. Based on temperature monitoring data within the heat exchange module, it heats the purified water stored within the module to a predetermined preheating temperature and maintains the water temperature within the heat exchange module stable near this preheating temperature. For example, when the preheating temperature is set to 98°C, the heating device starts heating at high power. When the water temperature within the heat exchange module reaches 98°C, the heating device switches to a low-power constant-temperature heating state, ensuring a continuously stable water temperature within the heat exchange module and providing a stable heat source for subsequent hot water delivery.

[0036] S4. Based on the comparison between the terminal water temperature and the target water temperature, dynamically adjust the heating power of the heating device and / or the flow rate of the water purification system's flow regulation device to ensure that the terminal water temperature reaches the target water temperature; Specifically, in step S4, the water purification system compares the real-time collected terminal water temperature with the target outlet water temperature. Based on the deviation between the two, it dynamically adjusts the heating power of the heating device and / or the water flow of the flow regulating device to achieve closed-loop control of the water temperature. If the terminal water temperature is lower than the target outlet water temperature (e.g., target 95℃, actual 92℃), the system increases the heating power of the heating device to supplement the hot water heat. At the same time, it can adjust the water flow through the flow regulating device to accelerate the hot water delivery efficiency and increase the terminal water temperature. If the terminal water temperature is higher than the target outlet water temperature (e.g., target 45℃, actual 48℃), the system reduces the heating power of the heating device to reduce the hot water heat input. At the same time, it can increase the cold water flow through the flow regulating device to adjust the cold and hot water mixing ratio and lower the terminal water temperature. If the deviation between the terminal water temperature and the target outlet water temperature is within the preset allowable range (e.g., ±1℃), the system maintains the current heating power and water flow to ensure a stable terminal outlet water temperature.

[0037] This embodiment effectively compensates for heat loss during the hot water pipeline transportation process by combining preheating with reserved temperature margin, real-time monitoring of terminal water temperature, and dynamic closed-loop regulation. This ensures that the terminal water temperature of the water purification system accurately matches the target water temperature set by the user, significantly improving the accuracy and stability of the water temperature control of the water purification system and meeting the refined water temperature requirements of users in different scenarios.

[0038] Optionally, in some embodiments, step S1”” obtains the target water temperature set by the user and determines the preheating temperature based on the target water temperature, including: S11. Receive the target water temperature set by the user through the input interface; Specifically, in step S11, the target water temperature input by the user is received through the input interface configured in the water purification system. This input interface can be integrated into the faucet control panel of the water outlet module, the touch screen of the water purification system, or the control interface of a smart terminal associated with the water purification system. The target water temperature is the temperature benchmark for the user's actual water usage needs. The user can set the corresponding temperature according to different water usage scenarios, such as setting 45℃ when preparing infant formula, setting 95℃ when brewing tea, and setting room temperature for daily direct drinking. This step is the initial input for the entire water temperature control process, clarifying the target value for subsequent temperature compensation and heating control.

[0039] S12. Obtain information on the pipe length and ambient temperature of the water purification system; Specifically, in step S12, the length information of the hot water delivery pipeline between the heat exchange module and the water outlet module in the water purification system, as well as the ambient temperature information of the current operating environment, are automatically acquired. The pipeline length information is a fixed parameter pre-calibrated according to the model structure and stored in the system's main control unit at the factory. Differences in pipeline length under different installation scenarios directly affect the heat loss during hot water delivery. The ambient temperature information is acquired in real time through an ambient temperature sensor configured in the water purification system (or indirectly collected by temperature monitoring components within the heat exchange module or water purification module). The ambient temperature also affects the degree of heat loss during hot water delivery. For example, a model with a 2m pipeline length has a significantly higher heat loss than a model with a 1m pipeline length; the heat loss at an ambient temperature of 10℃ in winter is much higher than the heat loss at an ambient temperature of 30℃ in summer.

[0040] S13. Based on the pipeline length information and ambient temperature information, match the corresponding temperature compensation value from the preset compensation value mapping table; Specifically, for step S13, a compensation value mapping table pre-stored in the main control unit is invoked. This mapping table is a correspondence table established through extensive experimental calibration, corresponding to the heat loss of hot water transportation under different combinations of pipe length and ambient temperature. The system uses the obtained pipe length information and ambient temperature information as query conditions to match the temperature compensation value in the compensation value mapping table to obtain the temperature compensation value that completely corresponds to the current operating condition. For example, the compensation value mapping table can be calibrated with the following correspondence: when the pipe length is 1m and the ambient temperature is 25℃, the temperature compensation value is 2℃; when the pipe length is 2m and the ambient temperature is 10℃, the temperature compensation value is 5℃; when the pipe length is 1.5m and the ambient temperature is 15℃, the temperature compensation value is 3℃, etc. The system automatically matches the corresponding compensation value according to the current actual operating condition.

[0041] S14. Use the matched temperature compensation value as the preset temperature compensation value; Specifically, for step S14, the matched temperature compensation value is determined as the preset temperature compensation value for this water temperature control, and serves as the core parameter for subsequent preheating temperature calculation. This ensures that the compensation value is fully compatible with the current pipeline and environmental conditions, avoiding the problem that fixed compensation values ​​cannot be adapted to different usage scenarios.

[0042] S15. Add the target water temperature and the temperature compensation value to calculate the preheating temperature; Specifically, in step S15, based on the received user-set target water temperature, a predetermined preset temperature compensation value is added to calculate the preheating temperature that the heat exchange module needs to reach. This preheating temperature must be higher than the user-set target water temperature to offset heat loss during the process of hot water being transported from the heat exchange module to the outlet water module, reserving a temperature margin for the terminal outlet water temperature to meet the standard. For example, if the user sets the target water temperature to 95℃ and the matched temperature compensation value is 5℃, then the calculated preheating temperature is 100℃; if the user sets the target water temperature to 45℃ and the matched temperature compensation value is 2℃, then the calculated preheating temperature is 47℃, ensuring that after the hot water in the heat exchange module is transported to the outlet water module through the pipeline, the actual outlet water temperature can accurately match the user-set target value.

[0043] This embodiment achieves personalized temperature compensation for different installation conditions and usage environments by combining pipeline length information and ambient temperature information to match temperature compensation values ​​in a table, and then calculating the preheating temperature by superimposing the compensation value on the target water temperature. This accurately offsets heat loss during hot water delivery, effectively improves the accuracy of preheating temperature setting, and thus ensures the control precision of the water temperature at the end of the water purification system, adapting to the refined water needs of different models and usage scenarios.

[0044] In a specific embodiment, the water purification system provided includes a water purification module, a heat exchange module, and a water outlet module. A circulation pump is installed between the heat exchange module and the water outlet module. The water purification system is equipped with a flow regulating device, a heating device, and dual NTC temperature sensors. The first NTC temperature sensor is embedded inside the heat tank cavity of the heat exchange module, in direct contact with the pure water in the heat tank, and is used to detect the water temperature in the heat tank in real time. The second NTC temperature sensor is embedded in the hot water outlet pipe of the faucet in the water outlet module, 10cm from the faucet outlet, and is tightly fitted to the inner wall of the pipe, and is used to detect the end water temperature at the faucet outlet in real time. The heating device is integrated into the heat tank of the heat exchange module. The flow regulating device is used to regulate the flow rate of cold water mixing in, and the circulation pump is used to drive the hot water in the heat tank to be transported to the water outlet module.

[0045] This embodiment takes a user's water needs for brewing tea as an example. The target water temperature required by the user is 90℃. The following is the control implementation process of the water purification system: Step 1: Initial temperature calibration, determine calibration parameters.

[0046] Before obtaining the user's target water temperature, an initial calibration process is triggered. The first NTC sensor detects an initial temperature of 25°C inside the hot water tank, and the second NTC sensor detects an initial temperature of 24.8°C at the faucet outlet pipe. The initial deviation between the two is calculated to be 0.2°C, and this value is stored as a calibration parameter. Subsequent water temperatures detected by the second NTC sensor will be corrected based on this 0.2°C calibration parameter to eliminate the initial detection deviation of the sensor.

[0047] Step 2: Obtain the target water temperature and determine the preheating temperature as the target water temperature + 5℃.

[0048] The system receives the target water temperature of 90℃ set by the user through the operation interface. Based on this target water temperature, the preheating temperature is determined. In this embodiment, the preheating temperature is directly set to 90℃ + 5℃ = 95℃. During the process of hot water being transported from the heat exchange module's heat tank to the faucet outlet of the water outlet module through the pipeline, heat loss will occur due to the heat conduction of the pipeline material and the convection heat exchange between the hot water and the surrounding environment. Under normal temperature conditions, this heat loss will cause the hot water temperature to drop by 3-5℃ during transportation. If the heat tank is only heated to the target water temperature of 90℃, after the heat loss in the pipeline, the end water temperature at the faucet outlet will drop to 85-87℃, which will not meet the user's needs. Therefore, the preheating temperature is set to the target water temperature + 5℃ to compensate for the pipeline heat loss in advance, laying the foundation for the end water temperature to reach the target value.

[0049] Step 3: Control the heating device to heat the water in the hot tank to 95℃.

[0050] A start command is sent to the heating device of the heat exchange module, and the heating device heats the pure water in the hot tank at its rated power. The first NTC sensor detects the water temperature in the hot tank in real time and transmits temperature data to the main control unit of the system every 0.3 seconds. When the main control unit detects that the water temperature detected by the first NTC sensor has reached the preheating temperature of 95°C, it controls the heating device to enter the constant temperature standby state to maintain the water temperature in the hot tank at a stable 95°C.

[0051] Step 4: Hot water is supplied, and the temperature is monitored synchronously by dual NTC sensors.

[0052] The circulation pump is started, driving the 95°C hot water in the hot tank to the outlet module at 80% of the rated speed. As the hot water flows in the pipeline, it begins to cool down due to heat loss. The second NTC sensor detects the end water temperature at the faucet outlet in real time and transmits temperature data to the main control unit every 0.2 seconds. All detection data is corrected based on the calibration parameter of 0.2°C. The first NTC sensor continuously monitors the water temperature in the hot tank, forming a dual-NTC dual-point temperature monitoring system.

[0053] Step 5: Dynamically adjust system parameters based on the deviation between the terminal water temperature and the target water temperature. The main control unit calculates the temperature difference between the terminal water temperature detected by the second NTC sensor and the target water temperature of 90℃. The preset water temperature deviation range is ±0.5℃, and the system dynamically adjusts based on the temperature difference. For example, in the initial stage of hot water delivery, the second NTC sensor detects a terminal water temperature of 88℃, which is corrected to 88.2℃, resulting in a temperature difference of -1.8℃, below the lower limit of the deviation range. The system then executes a temperature rise control mode: increasing the heating power of the heating device by 20%, while simultaneously reducing the cold water flow rate of the flow regulating device by 0.2L / min, and decreasing the circulation pump speed in 5% increments to reduce heat loss of hot water in the pipeline. After adjustment, the second NTC sensor detects a terminal water temperature of 89.6℃, which is corrected to 89.8℃, resulting in a temperature difference of -0.2℃, falling within the preset deviation range of ±0.5℃. The system maintains the current heating power, cold water flow rate, and circulation pump speed unchanged.

[0054] Step 6: After the water temperature stabilizes and reaches the standard, water is discharged, and the temperature is continuously stabilized.

[0055] Once the terminal water temperature is detected to be stable within the deviation range of 89.5℃-90.5℃ for 3 seconds, the faucet outlet valve of the control module is opened to officially supply water to the user. During the water output process, the dual NTC sensors continuously and synchronously monitor the temperature. If the terminal water temperature drops to 89.3℃ (after correction) due to a slight decrease in ambient temperature, the system immediately fine-tunes the heating power and cold water flow rate again to bring the terminal water temperature back to the preset deviation range, ensuring stable water temperature throughout the entire output process.

[0056] Step 7: Receive the water outage command and stop the water supply.

[0057] When the user finishes using water and triggers the water stop command on the faucet, the system's main control unit immediately controls the outlet valve to close, while simultaneously controlling the heating device to return to a low-power constant temperature state, the circulation pump to stop working, and the water purification system to return to standby mode.

[0058] Optionally, such as Figure 4 As shown, in some embodiments, step S2, "controlling the heating device to heat the water in the heat exchange module to the preheating temperature," may specifically include: S21. Start the heating device to heat the water in the heat exchange module; Specifically, in step S21, the heat exchange module stores pure water that has been treated by the water purification module. After receiving the confirmation signal of the preheating temperature, the main control unit of the water purification system sends a heating start command to the heating device integrated in the heat exchange module. After receiving the command, the heating device starts working with a preset initial heating power to heat the pure water in the heat exchange module. The heating device remains in a continuous working state during this stage until it receives the relevant control command for temperature compliance from the main control unit, at which point it will change its working state.

[0059] S22. Real-time acquisition of the water temperature inside the tank detected by the first temperature sensor; Specifically, in step S22, the first temperature sensor is embedded inside the heat exchange module, maintaining a close contact connection with the water inside the module, and has the ability to accurately detect the water temperature. The sensor continuously collects real-time data of the water temperature inside the tank in the heat exchange module according to the system's preset detection frequency, and transmits each set of temperature data to the main control unit of the water purification system in real time. The main control unit continuously receives, records, and updates the temperature data synchronously, realizing real-time monitoring of the entire process of water temperature change in the tank inside the heat exchange module, ensuring that dynamic changes in water temperature can be captured in a timely manner.

[0060] S23. When the water temperature inside the tank reaches the preheating temperature, control the heating device to stop heating or enter a constant temperature standby state; Specifically, in step S23, the main control unit continuously compares the real-time water temperature data received in the tank with the pre-determined preheating temperature value. When the real-time detected water temperature in the tank reaches the set preheating temperature, the main control unit immediately sends a corresponding working status control command to the heating device. If a stop heating command is sent, the heating device immediately stops all heating operations and no longer generates heat upon receiving the command. If a constant temperature standby command is sent, the heating device immediately switches its working mode upon receiving the command and enters a low-power constant temperature standby state, which can quickly perform low-power supplementary heating when the water temperature in the tank fluctuates and drops slightly, maintaining the water temperature in the tank near the preheating temperature until a hot water delivery command is received from the main control unit.

[0061] In a specific embodiment, assuming the preheating temperature determined by the water purification system is 95°C, the main control unit first sends a start command to the heating device of the heat exchange module. The heating device then begins to heat the pure water in the heat exchange module at its rated heating power. Subsequently, the first temperature sensor in the heat exchange module detects the water temperature in the tank every 0.3 seconds, continuously transmitting a series of real-time water temperature data, such as 82°C, 88°C, 92°C, and 95°C, to the main control unit. Finally, when the main control unit detects that the water temperature in the tank transmitted by the first temperature sensor has reached the preheating temperature of 95°C, it sends a constant temperature standby command to the heating device according to the system settings. The heating device then stops heating at its rated power and switches to a low-power constant temperature standby state, maintaining the water temperature in the tank at around 95°C.

[0062] This embodiment first activates the heating device to heat the water in the heat exchange module, then uses a first temperature sensor to monitor the water temperature in the tank in real time and accurately. Finally, when the water temperature reaches the target, the heating device is controlled to switch its working state in a timely manner. This can accurately and stably control the water temperature in the heat exchange module to the preset preheating temperature, avoiding insufficient heating that would result in the water temperature not meeting the requirements when delivering hot water to the outlet module, and also preventing energy loss caused by overheating. At the same time, the heating device can choose to stop heating or maintain a constant temperature standby state as needed, ensuring that the water temperature in the heat exchange module remains stable within the preheating temperature range, laying a stable and reliable temperature foundation for the subsequent output of hot water to the outlet module.

[0063] Optionally, such as Figure 5 As shown, in some embodiments, step S4, "based on the comparison between the terminal water temperature and the target water temperature, dynamically adjusting the heating power of the heating device and / or the flow rate of the flow regulation device of the water purification system to make the terminal water temperature reach the target water temperature," may specifically include: S41. Calculate the temperature difference between the terminal water temperature and the target water temperature; Specifically, in step S41, the main control unit of the water purification system continuously receives the terminal water temperature data detected and transmitted in real time by the second temperature sensor in the water outlet module, and at the same time retrieves the user-set target water temperature data stored in the system. The main control unit performs a numerical subtraction operation between the terminal water temperature and the target water temperature according to the preset numerical calculation logic to obtain the temperature difference between the two. This temperature difference directly reflects the degree of deviation of the terminal water temperature from the target water temperature, providing core data basis for subsequent temperature adjustment decisions.

[0064] S42. Determine whether the temperature difference falls within the preset deviation range; Specifically, for step S42, the water purification system has a preset allowable fluctuation range of the terminal water temperature relative to the target water temperature, i.e., a preset deviation range. The upper and lower limits of this range are stored in the system parameters of the main control unit. The main control unit compares the calculated temperature difference value with the upper and lower limits of the preset deviation range to accurately determine whether the temperature difference value is lower than the lower limit of the preset deviation range, higher than the upper limit of the preset deviation range, or within the preset deviation range. The judgment result will directly determine the temperature control mode to be started subsequently.

[0065] S43. When the temperature difference is lower than the lower limit of the preset deviation range, the heating control mode is executed to increase the heating power of the heating device and reduce the cold water flow of the flow regulating device; Specifically, in step S43, when the main control unit determines that the temperature difference is lower than the lower limit of the preset deviation range, it indicates that the terminal water temperature is significantly lower than the target water temperature. At this time, the main control unit immediately triggers the heating control mode. The main control unit sends a power increase command to the heating device in the heat exchange module to drive the heating device to increase the heating power to generate more heat. At the same time, it sends a cold water flow reduction command to the flow regulation device of the water purification system to reduce the amount of cold water mixed in. Through the dual regulation of increasing heating power and reducing cold water flow, the terminal water temperature is rapidly increased, pushing the terminal water temperature closer to the target water temperature.

[0066] S44. When the temperature difference exceeds the upper limit of the preset deviation range, the cooling control mode is executed, and the cold water flow rate of the flow regulating device is increased; Specifically, in step S44, when the main control unit determines that the temperature difference is higher than the upper limit of the preset deviation range, it indicates that the terminal water temperature is significantly higher than the target water temperature. At this time, the main control unit immediately triggers the cooling control mode. The main control unit sends a cold water flow increase command to the flow regulation device of the water purification system, driving the flow regulation device to increase the amount of cold water mixed in. The terminal water temperature is rapidly reduced by mixing cold water and hot water, without the need for additional adjustment of the heating device. This simple and efficient method allows the terminal water temperature to approach the target water temperature.

[0067] S45. When the temperature difference falls within the preset deviation range, maintain the current heating power of the heating device and the current flow rate of the flow regulating device; Specifically, for step S45, when the main control unit determines that the temperature difference is within the preset deviation range, it indicates that the deviation between the terminal water temperature and the target water temperature is within the system's allowable fluctuation range. At this time, the main control unit does not send any adjustment commands to the heating device and the flow regulating device. The heating device maintains its current heating power and continues to work, and the flow regulating device maintains its current cold water flow rate. The current water temperature is maintained without adjustment to ensure that the terminal water temperature is stable within the allowable fluctuation range of the target water temperature.

[0068] In a specific embodiment, the user-set target water temperature is 90℃, and the preset temperature difference deviation range of the water purification system is -0.5℃ to +0.5℃, meaning the acceptable range for the final water temperature is between 89.5℃ and 90.5℃. If the final water temperature detected by the second temperature sensor is 89℃, the calculated temperature difference is -1℃, which is lower than the lower limit of the preset deviation range of -0.5℃. The main control unit executes the heating control mode, increasing the heating power of the heat exchange module heating device while reducing the cold water flow of the flow regulating device. If the final water temperature detected by the second temperature sensor is 91℃, the calculated temperature difference is +1℃, which is higher than the upper limit of the preset deviation range of +0.5℃. The main control unit executes the cooling control mode, simply increasing the cold water flow of the flow regulating device. If the final water temperature detected by the second temperature sensor is 89.8℃, the calculated temperature difference is -0.2℃, which falls within the preset deviation range. The main control unit controls the heating device to maintain its current heating power and the flow regulating device to maintain its current cold water flow.

[0069] This embodiment first accurately calculates the temperature difference between the terminal water temperature and the target water temperature, then determines the deviation range based on the temperature difference, and finally triggers corresponding heating, cooling, or maintenance modes for different ranges to achieve targeted and dynamic adjustment of the terminal water temperature. It can accurately implement measures according to the actual deviation of the terminal water temperature. When heating, dual adjustment ensures heating efficiency; when cooling, simplified operation achieves efficient temperature control; and when the target is met, stable parameters maintain the water temperature, effectively avoiding excessive deviation between the terminal water temperature and the target water temperature. This ensures that the terminal water temperature can quickly and accurately reach and stabilize within the allowable range of the target water temperature, improving the accuracy and efficiency of the water purification system in controlling the terminal water temperature.

[0070] Optionally, in some embodiments, the heating control mode includes: determining a first heating power adjustment amount and a first cold water flow rate adjustment amount based on the temperature difference value, wherein the first heating power adjustment amount is positively correlated with the temperature difference value, and the first cold water flow rate adjustment amount is positively correlated with the temperature difference value; increasing the heating power of the heating device according to the first heating power adjustment amount; and decreasing the cold water flow rate of the flow rate adjustment device according to the first cold water flow rate adjustment amount. Specifically, the main control unit of the water purification system retrieves the temperature difference between the terminal water temperature and the target water temperature. Based on the system's preset adjustment matching rules, it calculates and determines the corresponding first heating power adjustment and first cold water flow adjustment. The first heating power adjustment is positively correlated with the temperature difference; that is, the greater the difference between the terminal water temperature and the target water temperature, the larger the value of the first heating power adjustment. Similarly, the first cold water flow adjustment is also positively correlated with the temperature difference; the greater the difference between the terminal water temperature and the target water temperature, the larger the value of the first cold water flow adjustment. The main control unit sends a power adjustment command to the heating device within the heat exchange module. This command includes the determined first heating power adjustment. Upon receiving the command, the heating device increases its power output according to this adjustment, based on its current heating power, and continues to operate at the new heating power, increasing heat output. The main control unit sends a cold water flow regulation command to the flow regulation device of the water purification system. The command includes a predetermined first cold water flow regulation amount. After receiving the command, the flow regulation device reduces the cold water flow based on the current cold water flow and the regulation amount, thereby reducing the amount of cold water mixed in. This, combined with the increase in heating power, enables the terminal water temperature to rise rapidly.

[0071] For example, assuming the user sets a target water temperature of 90℃, and the water purification system's preset terminal water temperature deviation range is ±0.5℃, the system's preset adjustment rules are: during heating, for every 1℃ increase in temperature difference, the first heating power adjustment increases by 10%, and the first cold water flow rate adjustment increases by 0.1L / min; during cooling, for every 1℃ increase in temperature difference, the second cold water flow rate adjustment increases by 0.1L / min. If the terminal water temperature is 88℃, the calculated temperature difference is -2℃. According to the rules, the first heating power adjustment is determined to be 20%, and the first cold water flow rate adjustment is 0.2L / min. The heating device increases its power by 20% based on the current power, and the flow rate adjustment device reduces the cold water flow rate by 0.2L / min. Through dual adjustment, the terminal water temperature is rapidly increased.

[0072] Optionally, in some embodiments, the cooling control mode includes: determining a second cold water flow rate adjustment amount based on the temperature difference value, wherein the second cold water flow rate adjustment amount is positively correlated with the temperature difference value; increasing the cold water flow rate of the flow rate adjustment device according to the second cold water flow rate adjustment amount; and repeatedly performing the operation of increasing the cold water flow rate until the terminal water temperature drops to fall within a preset deviation range.

[0073] Specifically, the main control unit of the water purification system retrieves the temperature difference between the terminal water temperature and the target water temperature. Based on the system's preset cold water flow rate adjustment matching rules, it calculates and determines the corresponding second cold water flow rate adjustment. The second cold water flow rate adjustment is positively correlated with the temperature difference; that is, the greater the difference between the terminal water temperature and the target water temperature, the larger the value of the second cold water flow rate adjustment. The main control unit sends a cold water flow rate adjustment command to the water purification system's flow rate adjustment device. This command includes the determined second cold water flow rate adjustment. Upon receiving the command, the flow rate adjustment device increases the cold water flow rate according to this adjustment, increasing the amount of cold water mixed in. This initial cooling of the terminal water temperature is achieved through the mixing of cold and hot water. After the flow regulating device completes a cold water flow increase operation, the main control unit obtains the updated terminal water temperature in real time and recalculates the temperature difference value to determine whether the new terminal water temperature falls within the preset deviation range. If it does not fall within the range, the main control unit will redetermine the second cold water flow regulation amount based on the new temperature difference value and send the instruction to increase the cold water flow to the flow regulating device again, repeating the above cold water flow regulation and water temperature judgment operations until the terminal water temperature drops to the preset deviation range.

[0074] For example, as above, if the terminal water temperature is 93℃, the calculated temperature difference is +3℃. According to the rules, the second cold water flow rate adjustment is determined to be 0.3L / min. The flow rate adjustment device first increases the cold water flow rate by 0.3L / min. If the terminal water temperature becomes 91℃, the temperature difference is +1℃, which does not fall within the preset deviation range. The system then redetermines the second cold water flow rate adjustment to 0.1L / min and increases the cold water flow rate again until the terminal water temperature drops to within the preset deviation range of 89.5℃-90.5℃.

[0075] This embodiment establishes a positive correlation between the temperature rise and fall adjustment amounts and the temperature difference value, so that the temperature adjustment operation of the water purification system is adapted to the actual deviation of the terminal water temperature, avoiding the problems of insufficient or excessive adjustment. In the temperature rise control mode, the heating power and cold water flow are precisely adjusted to quickly increase the terminal water temperature. In the temperature fall control mode, the cold water flow is gradually adjusted according to the temperature difference value and repeatedly verified until the water temperature reaches the standard, so as to achieve stable and precise cooling of the terminal water temperature.

[0076] Optionally, in some embodiments, the water purification system further includes a circulation pump disposed between the heat exchange module and the outlet water module. Then, step S4, "based on the comparison between the terminal water temperature and the target water temperature, dynamically adjusting the heating power of the heating device and / or the flow rate of the flow regulation device of the water purification system to make the terminal water temperature reach the target water temperature," includes: S401. Obtain the current speed of the circulating pump; Specifically, in step S401, the main control unit of the water purification system establishes a data communication connection with the circulating pump located between the heat exchange module and the outlet water module. It retrieves and reads the current operating speed data of the circulating pump in real time from the speed control module of the circulating pump. This data provides an initial reference for subsequent speed adjustment operations, ensuring the accuracy and pertinence of speed adjustment.

[0077] S402. Based on the comparison results between the terminal water temperature and the target water temperature, determine the direction of the target speed adjustment of the circulating pump; Specifically, in step S401, the main control unit compares the terminal water temperature detected in real time by the second temperature sensor in the water outlet module with the target water temperature set by the user. Based on the comparison result, the target speed adjustment direction of the circulation pump is determined: if the terminal water temperature is lower than the target water temperature, the target speed adjustment direction of the circulation pump is determined to be decreasing; if the terminal water temperature is higher than the target water temperature, the target speed adjustment direction of the circulation pump is determined to be increasing, thus defining a clear direction for subsequent speed adjustments.

[0078] S403. When the terminal water temperature is lower than the target water temperature, reduce the speed of the circulation pump by a preset step size; Specifically, in step S403, if the main control unit determines that the terminal water temperature is lower than the target water temperature, it immediately sends a speed reduction control command to the circulation pump. After receiving the command, the circulation pump adjusts its speed step size according to the fixed speed preset by the water purification system, completing a speed reduction operation based on the current speed. Reducing the circulation pump speed slows down the rate at which hot water is transported from the heat exchange module to the outlet module, reducing heat loss during hot water flow in the pipeline, and creating conditions for increasing the terminal water temperature. S404. When the terminal water temperature is higher than the target water temperature, increase the speed of the circulating pump by a preset step size; Specifically, in step S404, if the main control unit determines that the terminal water temperature is higher than the target water temperature, it immediately sends a speed-up control command to the circulation pump. After receiving the command, the circulation pump adjusts its speed step size according to the fixed speed preset by the water purification system and completes a speed-up operation based on the current speed. Increasing the speed of the circulation pump can accelerate the rate at which hot water is transported from the heat exchange module to the outlet module, reduce the residence time of hot water in the pipeline, avoid heat accumulation that causes the terminal water temperature to remain high, and promote a rapid drop in the terminal water temperature.

[0079] S405. After adjusting the speed of the circulating pump, reacquire the terminal water temperature, and continue to adjust according to the reacquired terminal water temperature until the deviation between the terminal water temperature and the target water temperature falls within the preset range. Specifically, for step S405, after the circulating pump completes one speed adjustment, the main control unit immediately re-collects the real-time data of the terminal water temperature of the outlet water module through the second temperature sensor, compares the new terminal water temperature with the target water temperature again, and determines whether the deviation between the two falls within the system's preset deviation range. If the deviation does not fall within the range, the main control unit will determine the speed adjustment direction again based on the comparison result of the new terminal water temperature and the target water temperature, and adjust the circulating pump speed according to the preset step size, repeating the above "speed adjustment - water temperature re-collection - deviation judgment" operation until the deviation between the terminal water temperature and the target water temperature falls within the preset range.

[0080] In a specific embodiment, the user sets the target water temperature to 90℃, the preset deviation range between the terminal water temperature and the target water temperature of the water purification system is ±0.5℃, the preset step size for adjusting the speed of the circulating pump is 5% of the rated speed, and the current operating speed of the circulating pump is 80% of the rated speed.

[0081] If the terminal water temperature detected by the second temperature sensor is 88℃, which is lower than the target water temperature, the main control unit reduces the circulation pump speed from 80% of the rated speed to 75% of the rated speed in a preset step. After adjustment, the terminal water temperature is re-detected. If the terminal water temperature is 89℃ at this time, and the deviation from the target water temperature still exceeds the preset range of ±0.5℃, the circulation pump speed is further reduced to 70% of the rated speed in a step of 5% of the rated speed, and the water temperature is detected again until the terminal water temperature reaches the preset deviation range of 89.5℃-90.5℃.

[0082] If the second temperature sensor detects a terminal water temperature of 91℃, which is higher than the target water temperature, the main control unit increases the circulation pump speed from 80% to 85% of the rated speed in a preset step. After adjustment, the terminal water temperature is re-detected. If the terminal water temperature is 90.8℃ at this time, and the deviation still exceeds the preset range, the circulation pump speed is increased to 90% of the rated speed in a step of 5% of the rated speed, and the water temperature is detected again until the terminal water temperature falls within the preset deviation range of 89.5℃-90.5℃.

[0083] This embodiment first establishes an adjustment benchmark by acquiring the current rotational speed of the circulating pump, then clarifies the direction of speed adjustment based on the comparison between the terminal water temperature and the target water temperature, and subsequently completes directional speed adjustment according to a fixed preset step size. Through a closed-loop operation of "adjustment-detection-re-adjustment," continuous optimization is achieved. Precise control of the terminal water temperature can be realized solely by gradually adjusting the rotational speed of the circulating pump. By adjusting the hot water delivery rate, the problem of water temperature deviation caused by heat loss or heat accumulation in the pipeline is specifically addressed, eliminating the need for complex adjustments to other devices and simplifying the water temperature adjustment process. At the same time, through repeated deviation verification and speed adjustment, it is ensured that the deviation between the terminal water temperature and the target water temperature stably falls within the preset range, effectively improving the timeliness and stability of the water purification system's control over the terminal outlet water temperature.

[0084] Optionally, in some embodiments, after step S4 "dynamically adjusting the heating power of the heating device and / or the flow rate of the flow regulation device of the water purification system based on the comparison result between the terminal water temperature and the target water temperature", the method further includes: S51. Determine whether the difference between the end water temperature and the target water temperature continuously falls within the preset deviation range and reaches the preset duration; Specifically, for step S51, after completing the heating power of the heating device and / or the flow rate of the flow regulating device, the main control unit of the water purification system continuously receives the terminal water temperature data detected by the second temperature sensor in the water outlet module, calculates the difference between the terminal water temperature and the target water temperature in real time, and continuously monitors the state of the difference. The main control unit compares the difference with the system's preset deviation range, and simultaneously counts the continuous duration of the difference falling within the preset deviation range. It determines whether the difference is continuously within the preset deviation range and whether the continuous duration of the stable state reaches the system's preset duration threshold. Only when both conditions are met will the subsequent water outlet operation be triggered.

[0085] S52. When the judgment result is yes, the outlet valve of the control water outlet module is opened; Specifically, in step S52, after the main control unit determines that the difference between the terminal water temperature and the target water temperature continuously falls within the preset deviation range and reaches the preset time, it immediately sends an opening control command to the outlet valve of the outlet module; after receiving the command, the outlet valve performs a mechanical opening action, opening the outlet passage from the heat exchange module to the outlet module, and the water purification system officially enters the outlet state. The water after temperature adjustment is output to the outside through the outlet module to meet the user's water demand.

[0086] S53. After the outlet valve is opened, the process of acquiring and monitoring the terminal water temperature, as well as the dynamic adjustment process of heating power and / or flow rate, is continuously executed to maintain the stability of the outlet water temperature; Specifically, in step S53, during the water outlet process when the outlet valve is open, the second temperature sensor maintains a real-time monitoring state for the terminal water temperature and continuously transmits the detected water temperature data to the main control unit. The main control unit continuously acquires and monitors the terminal water temperature. If the main control unit detects that the difference between the terminal water temperature and the target water temperature deviates from the preset deviation range, it will immediately restart the dynamic adjustment operation of the heating power of the heating device and / or the flow rate of the flow regulating device. Through timely parameter adjustment, the terminal water temperature is brought back to the preset deviation range. This monitoring and adjustment process is executed cyclically throughout the entire process to ensure that the water temperature remains stable during the water outlet stage.

[0087] S54. When a water outage command is received, control the outlet valve to close; Specifically, in step S54, the main control unit of the water purification system receives a water outage command from the system in real time. This command can be triggered by manual operation by the user, sensor operation of the water outlet module, etc. When the main control unit receives a valid water outage command, it immediately sends a shut-off control command to the water outlet valve of the water outlet module. After receiving the command, the water outlet valve performs a mechanical shut-off action, cutting off the water outlet passage from the heat exchange module to the water outlet module. The water purification system stops discharging water, and the water circuit returns to a closed state.

[0088] In a specific embodiment, the user sets the target water temperature to 90℃. The preset deviation range between the terminal water temperature and the target water temperature is ±0.5℃, and the preset stable attainment time is 3 seconds. After completing the dynamic adjustment of heating power and flow rate, the main control unit monitors that the terminal water temperature is stable between 89.6℃ and 90.4℃, and this stable state is maintained continuously for 3 seconds, meeting the preset conditions. The main control unit then controls the water outlet valve of the water outlet module to open, and the system starts dispensing water. During the water dispensing process, due to a slight decrease in ambient temperature, the terminal water temperature drops to 89.3℃, deviating from the preset deviation range. The main control unit immediately dynamically adjusts the heating power of the heating device again to bring the terminal water temperature back to the preset deviation range, continuously maintaining a stable water outlet temperature. When the user triggers a water stop command through the button on the water outlet module, the main control unit receives the command and immediately controls the water outlet valve to close, and the system stops dispensing water.

[0089] This embodiment avoids water temperature deviation caused by opening the outlet valve only after determining that the terminal water temperature has stabilized and remained at the target for a certain period of time. This ensures the accuracy of the initial outlet water temperature from the source. Continuous water temperature monitoring and dynamic adjustment during the water flow process can promptly respond to water temperature fluctuations caused by various factors such as changes in ambient temperature and heat loss in the pipeline, achieving stable temperature control throughout the water flow process. Upon receiving a water outage command, the outlet valve is closed in a timely manner, achieving precise response to water flow interruption.

[0090] Optionally, in some embodiments, before step S1 "obtaining the user-set target water temperature and determining the preheating temperature based on the target water temperature", the method further includes: S01. Obtain the first initial temperature value detected by the first temperature sensor and the second initial temperature value detected by the second temperature sensor; Specifically, for step S01, before the water purification system performs the operation of obtaining the user's target water temperature, it is in a standby state where it is not heating or supplying water. The main control unit simultaneously sends initial temperature detection commands to the first temperature sensor in the heat exchange module and the second temperature sensor in the outlet water module. The first temperature sensor detects the initial temperature of the water in the heat exchange module, generates a first initial temperature value, and transmits it to the main control unit in real time. The second temperature sensor detects the initial temperature of the pipeline in the outlet water module, generates a second initial temperature value, and transmits it to the main control unit synchronously. The main control unit receives and temporarily stores the two sets of initial temperature data to provide the original basis for subsequent deviation calculation.

[0091] S02. Calculate the initial deviation between the first initial temperature value and the second initial temperature value; Specifically, in step S02, the main control unit retrieves the temporarily stored first and second initial temperature values, calculates the difference between the two sets of data according to the system's preset numerical calculation logic, and obtains the initial deviation value between them. This initial deviation value directly reflects the difference in the detection data of the two temperature sensors in the initial state without external intervention, and its value provides the core calculation benchmark for subsequent water temperature data correction.

[0092] S03. Store the initial deviation value as calibration parameters; Specifically, for step S03, the main control unit writes the calculated initial deviation value into the system's parameter storage module and marks it as a calibration parameter for persistent storage. This calibration parameter will be retained by the system until the water purification system starts the initial temperature detection process again and generates a new deviation value. In all subsequent end-point water temperature monitoring processes, this parameter will be retrieved and used as a fixed correction basis.

[0093] S04. In the subsequent acquisition and monitoring of the terminal water temperature, the terminal water temperature detected by the second temperature sensor is corrected according to the calibration parameters; Specifically, in step S04, during the subsequent operation of the water purification system, the second temperature sensor continuously detects and transmits real-time data of the terminal water temperature to the main control unit. Each time the main control unit receives a set of terminal water temperature detection data, it retrieves the stored calibration parameters from the parameter storage module, performs numerical calculations on the calibration parameters and the real-time detected terminal water temperature according to the system's preset correction algorithm, corrects the detection data, and obtains an accurate value reflecting the actual terminal water temperature. All subsequent judgments and adjustments related to the terminal water temperature are based on this corrected accurate value.

[0094] In a specific embodiment, the water purification system is in an initial standby state. After the main control unit triggers the initial temperature detection, the first temperature sensor in the heat exchange module detects a first initial temperature value of 25.0℃, and the second temperature sensor in the outlet water module detects a second initial temperature value of 24.7℃. The main control unit calculates the difference between the two sets of data to obtain an initial deviation value of 0.3℃, and stores this value as the system's calibration parameter. In the subsequent end-point water temperature monitoring process, if the end-point water temperature detected by the second temperature sensor in real time is 89.2℃, the main control unit retrieves the 0.3℃ calibration parameter to correct the detection data, obtaining an actual end-point water temperature of 89.5℃. All subsequent water temperature adjustment operations of the system are based on 89.5℃.

[0095] This embodiment performs initial temperature acquisition and deviation calculation on the temperature sensors of the heat exchange module and the outlet water module before the core temperature control operation of the water purification system. The deviation value is stored as a calibration parameter for subsequent correction of the terminal water temperature. This effectively eliminates the initial detection deviation caused by factors such as the detection accuracy of the two temperature sensors and differences in the installation environment. This allows the subsequent monitored terminal water temperature data to accurately reflect the actual outlet water temperature. It provides an accurate and reliable data source for subsequent water temperature judgment, heating power and flow rate adjustment operations of the system. It avoids temperature adjustment errors caused by sensor detection deviations from the data source and improves the accuracy and reliability of the overall temperature control of the water purification system.

[0096] 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. First, a preheating temperature is determined based on the user-set target water temperature. Then, the heating device of the heat exchange module is controlled to heat the water to the preheating temperature, reserving a basis for adjusting for temperature changes during hot water delivery. This breaks away from the single control logic of existing control methods that only use the target water temperature as the heating endpoint. Simultaneously, when the heat exchange module outputs hot water to the water outlet module, the terminal water temperature at the water outlet module is acquired in real time. Based on the comparison between the terminal water temperature and the target water temperature, the heating power of the heating device and / or the flow rate of the system flow regulating device are dynamically adjusted. This allows the water temperature control of the water purification system to no longer rely solely on the temperature data within the heat exchange module, but to be specifically adjusted according to the actual terminal water temperature used by the user. This effectively and promptly corrects deviations between the terminal water temperature and the target water temperature, ultimately achieving a precise terminal water outlet temperature that meets the user's set target temperature. This improves the overall control accuracy of the water purification system for the outlet water temperature and solves the problem of deviations between the terminal water outlet temperature and the target water temperature in existing water purification systems.

[0097] 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: Obtain the target water temperature set by the user, and determine the preheating temperature based on the target water temperature; The heating device controls the water in the heat exchange module to heat to the preheating temperature; The heat exchange module is controlled to output hot water to the water outlet module, and the terminal water temperature is obtained in real time from the second temperature sensor. Based on the comparison between the terminal water temperature and the target water temperature, the heating power of the heating device and / or the flow rate of the water purification system's flow regulation device are dynamically adjusted to ensure that the terminal water temperature reaches the target water temperature.

[0098] This embodiment effectively corrects the deviation between the terminal water temperature and the target water temperature by making targeted adjustments to the heating and flow processes. Ultimately, it achieves the effect of the terminal water temperature accurately reaching the user's set target water temperature, thereby improving the overall control accuracy of the water purification system on the outlet water temperature and solving the problem that the terminal outlet water temperature is prone to deviating from the target water temperature in the existing water purification system.

[0099] 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: Obtain the target water temperature set by the user, and determine the preheating temperature based on the target water temperature; The heating device controls the water in the heat exchange module to heat to the preheating temperature; The heat exchange module is controlled to output hot water to the water outlet module, and the terminal water temperature is obtained in real time from the second temperature sensor. Based on the comparison between the terminal water temperature and the target water temperature, the heating power of the heating device and / or the flow rate of the water purification system's flow regulation device are dynamically adjusted to ensure that the terminal water temperature reaches the target water temperature.

[0100] This embodiment effectively corrects the deviation between the terminal water temperature and the target water temperature by making targeted adjustments to the heating and flow processes. Ultimately, it achieves the effect of the terminal water temperature accurately reaching the user's set target water temperature, thereby improving the overall control accuracy of the water purification system on the outlet water temperature and solving the problem that the terminal outlet water temperature is prone to deviating from the target water temperature in the existing water purification system.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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 method for controlling a water purification system, characterized in that, This invention relates to a water purification system, which includes a water purification module, a heat exchange module, and a water outlet module. The heat exchange module is equipped with a first temperature sensor and a heating device, and the water outlet module is equipped with a second temperature sensor. The control method for the water purification system includes: Obtain the target water temperature set by the user, and determine the preheating temperature based on the target water temperature; The heating device is controlled to heat the water in the heat exchange module to the preheating temperature; The heat exchange module is controlled to output hot water to the water outlet module, and the terminal water temperature detected in real time by the second temperature sensor is obtained. Based on the comparison between the terminal water temperature and the target water temperature, the heating power of the heating device and / or the flow rate of the flow regulating device of the water purification system are dynamically adjusted so that the terminal water temperature reaches the target water temperature.

2. The water purification system control method according to claim 1, characterized in that, The step of obtaining the user-set target water temperature and determining the preheating temperature based on the target water temperature includes: Receive the target water temperature set by the user through the input interface; Obtain the pipeline length information and ambient temperature information of the water purification system; Based on the pipeline length information and the ambient temperature information, the corresponding temperature compensation value is matched from the preset compensation value mapping table; The matched temperature compensation value is used as the preset temperature compensation value; The target water temperature and the temperature compensation value are added together to calculate the preheating temperature.

3. The water purification system control method according to claim 1, characterized in that, The control of the heating device to heat the water in the heat exchange module to the preheating temperature includes: The heating device is activated to heat the water in the heat exchange module; The water temperature inside the tank detected by the first temperature sensor is acquired in real time. When the water temperature inside the tank reaches the preheating temperature, the heating device is controlled to stop heating or enter a constant temperature standby state.

4. The water purification system control method according to claim 1, characterized in that, The step of dynamically adjusting the heating power of the heating device and / or the flow rate of the flow regulation device of the water purification system based on the comparison result between the terminal water temperature and the target water temperature, so as to make the terminal water temperature reach the target water temperature, includes: Calculate the temperature difference between the terminal water temperature and the target water temperature; Determine whether the temperature difference value falls within a preset deviation range; When the temperature difference is lower than the lower limit of the preset deviation range, the heating control mode is executed to increase the heating power of the heating device and decrease the cold water flow rate of the flow regulating device. When the temperature difference value is higher than the upper limit of the preset deviation range, the cooling control mode is executed, and the cold water flow rate of the flow regulating device is increased; When the temperature difference falls within the preset deviation range, the current heating power of the heating device and the current flow rate of the flow regulating device are maintained.

5. The water purification system control method according to claim 4, characterized in that, The heating control mode includes: determining a first heating power adjustment amount and a first cold water flow rate adjustment amount based on the temperature difference value, wherein the first heating power adjustment amount and the temperature difference value are positively correlated, and the first cold water flow rate adjustment amount and the temperature difference value are positively correlated; increasing the heating power of the heating device according to the first heating power adjustment amount; and decreasing the cold water flow rate of the flow rate adjustment device according to the first cold water flow rate adjustment amount. The cooling control mode includes: determining a second cold water flow rate adjustment amount based on the temperature difference value, wherein the second cold water flow rate adjustment amount is positively correlated with the temperature difference value; increasing the cold water flow rate of the flow rate adjustment device according to the second cold water flow rate adjustment amount; and repeatedly performing the operation of increasing the cold water flow rate until the terminal water temperature drops to fall within the preset deviation range.

6. The water purification system control method according to claim 1, characterized in that, The water purification system further includes a circulation pump disposed between the heat exchange module and the outlet water module. The step of dynamically adjusting the heating power of the heating device and / or the flow rate of the flow regulation device of the water purification system based on a comparison between the terminal water temperature and the target water temperature, so that the terminal water temperature reaches the target water temperature, includes: Obtain the current rotational speed of the circulating pump; Based on the comparison between the terminal water temperature and the target water temperature, the target speed adjustment direction of the circulating pump is determined; When the terminal water temperature is lower than the target water temperature, the speed of the circulation pump is reduced by a preset step size; When the terminal water temperature is higher than the target water temperature, the speed of the circulation pump is increased by a preset step size; After adjusting the speed of the circulating pump, the terminal water temperature is reacquired, and the adjustment continues based on the reacquired terminal water temperature until the deviation between the terminal water temperature and the target water temperature falls within the preset range.

7. The water purification system control method according to claim 1, characterized in that, After dynamically adjusting the heating power of the heating device and / or the flow rate of the flow regulating device of the water purification system based on the comparison result between the terminal water temperature and the target water temperature, the method further includes: Determine whether the difference between the terminal water temperature and the target water temperature continuously falls within a preset deviation range and reaches a preset duration; When the judgment result is yes, the water outlet valve of the water outlet module is opened. After the outlet valve is opened, the process of acquiring and monitoring the terminal water temperature, as well as the dynamic adjustment process of the heating power and / or flow rate, are continuously executed to maintain the stability of the outlet water temperature. When a water outage command is received, the outlet valve is closed.

8. The water purification system control method according to claim 1, characterized in that, Before acquiring the user-set target water temperature and determining the preheating temperature based on the target water temperature, the method further includes: Obtain the first initial temperature value detected by the first temperature sensor and the second initial temperature value detected by the second temperature sensor; Calculate the initial deviation between the first initial temperature value and the second initial temperature value; Store the initial deviation value as calibration parameters; During the subsequent acquisition and monitoring of the terminal water temperature, the terminal water temperature detected by the second temperature sensor is corrected according to the calibration parameters.

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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