Intelligent control method for water purification start-stop and water purification system

Abstract

The application discloses a kind of intelligent control method and water purification system of water purification start-stop, water purification system includes raw water inlet branch, water purification discharge branch, water purification backflow branch and filter unit;When water purification discharge branch meets water making condition, control booster device to carry out water inlet treatment to make raw water input filter unit through raw water inlet branch;Control filter unit to carry out raw water filtration treatment and obtain filtered water;Control water purification backflow device to carry out water purification backflow treatment and water purification discharge device to carry out water purification discharge treatment, to make water purification backflow to booster device through water purification backflow branch and discharge through water purification discharge branch.It can be seen that, part of water purification filtered by the present application can be backflowed to raw water inlet branch, so as to carry out pressure distribution for water purification discharge branch, reduce the situation that water purification system is wrongly stopped due to excessive pressure of water purification discharge branch, thereby reducing the situation that water purification system is frequently started and stopped, improve the working stability of water purification system.

Description

Technical Field

[0001] This invention relates to the field of water purification technology, and in particular to an intelligent control method and system for starting and stopping a water purification system. Background Technology

[0002] With the rapid development of water purification technology, water purification systems that use devices such as reverse osmosis pressure membranes for filtration are becoming increasingly popular. Furthermore, as reverse osmosis water purification technology continues to improve, the flow rate of water purification systems is increasing.

[0003] Current water purification systems primarily determine whether a water terminal (such as a dishwasher) has a water demand by detecting the water pressure in the purified water outlet pipe connected to the water terminal. When a decrease in pressure is detected in the purified water outlet pipe, the water terminal has a water demand, and the water purification system needs to be activated; when the pressure in the purified water outlet pipe reaches a set value, the water terminal does not have a water demand, and the water purification system needs to be shut down.

[0004] However, practice shows that when water is used at the terminal, if the flow rate of purified water in the water purification system is high, the inlet resistance at the terminal is usually also high. Furthermore, a long purified water outlet pipe can also generate significant water resistance, causing the pressure in the outlet pipe to easily rise to the set value, leading to an erroneous shutdown of the water purification system. When the water purification system shuts down, purified water quickly flows through the terminal. If the pressure in the outlet pipe decreases, the system restarts, resulting in frequent start-stop cycles and reduced operational stability.

[0005] Therefore, it is particularly important to provide an intelligent control method for starting and stopping water purification systems to improve their operational stability. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an intelligent control method and system for starting and stopping water purification, which can reduce the frequent start and stop of the water purification system and improve the stability of the water purification system.

[0007] To address the aforementioned technical problems, the first aspect of this invention discloses an intelligent control method for starting and stopping a water purification system. The method is applied to control the start and stop of a water purification system. The water purification system includes a raw water inlet branch, a purified water outlet branch, a purified water return branch, and a filtration unit. A pressurization device is provided on the raw water inlet branch, a purified water return device is provided on the purified water return branch, and a purified water outlet device is provided on the purified water outlet branch. The filtration unit includes a filter inlet, a filter element, and a purified water outlet. The filter inlet is connected to the raw water inlet branch, the purified water outlet is connected to the purified water outlet branch, and the purified water outlet is also connected to the purified water return branch. The method includes:

[0008] Determine whether the purified water discharge branch meets the water production conditions;

[0009] When it is determined that the water purification discharge branch meets the water production conditions, the booster device is controlled to perform water intake treatment so that the raw water is input into the filter unit through the raw water inlet branch.

[0010] The filtration unit is controlled to perform raw water filtration treatment, so that the filtration unit filters the raw water to obtain filtered clean water;

[0011] The water purification return device is controlled to perform water purification return treatment, so that the purified water produced by the filtration unit flows back to the booster device through the water purification return branch and is then input into the filtration unit again.

[0012] The water purification discharge device is controlled to perform water purification discharge treatment so that the purified water produced by the filtration unit is discharged through the water purification discharge branch.

[0013] As an optional implementation, in the first aspect of the present invention, the method further includes:

[0014] Determine whether the purified water discharge branch meets the stop-backflow condition; when it is determined that the purified water discharge branch meets the stop-backflow condition, control the purified water return device to perform a shut-off operation, so that the purified water return device stops performing the purified water return process; and / or,

[0015] Determine whether the purified water discharge branch meets the water outage conditions; when it is determined that the purified water discharge branch meets the water outage conditions, control the booster device to perform a shutdown operation so that the booster device stops performing the water inlet treatment.

[0016] As an optional implementation, in the first aspect of the present invention, the method further includes:

[0017] After the water purification return device stops performing the water purification return process, it is determined whether the water purification discharge branch meets the re-return conditions; when it is determined that the water purification discharge branch meets the re-return conditions, the water purification system is controlled to resume the water purification return process; and / or,

[0018] When it is determined that the purified water discharge branch meets the water production conditions, before controlling the purified water return device to perform purified water return treatment, it is determined whether the purified water discharge branch meets the return start conditions; when it is determined that the purified water discharge branch meets the return start conditions, the operation of controlling the purified water return device to perform purified water return treatment is triggered, so that the purified water generated by the filtration unit returns to the booster device through the purified water return branch and is then input into the filtration unit again.

[0019] As an optional implementation, in the first aspect of the present invention, the method further includes:

[0020] When the purified water return device performs the purified water return treatment, it is determined whether the purified water discharge branch meets the return adjustment conditions.

[0021] When it is determined that the purified water discharge branch meets the backflow adjustment conditions, the purified water backflow parameters of the purified water backflow device are adjusted.

[0022] The purified water return device is controlled to perform purified water return treatment according to the adjusted purified water return parameters.

[0023] As an optional implementation, in the first aspect of the present invention, determining whether the purified water discharge branch meets the water production conditions includes:

[0024] Determine whether the pressure value in the purified water discharge branch is lower than a preset first pressure threshold. If the pressure value is determined to be lower than the first pressure threshold, determine that the purified water discharge branch meets the water production conditions; or...

[0025] Determine whether the pressure value of the purified water discharge branch is in a decreasing state and whether the pressure decrease rate exceeds a preset first pressure decrease rate threshold. When it is determined that the pressure value is in a decreasing state and the pressure decrease rate exceeds the first pressure decrease rate threshold, determine that the purified water discharge branch meets the water production conditions; or...

[0026] Determine whether the purified water flow rate of the purified water discharge branch exceeds a preset first flow rate threshold. If it is determined that the purified water flow rate exceeds the first flow rate threshold, determine that the purified water discharge branch meets the water production conditions; or,

[0027] Determine whether the water flow rate of the water purification discharge branch is in an increasing state and whether the rate of increase of the water flow rate exceeds a preset first rate of increase threshold. When it is determined that the water flow rate is in the increasing state and the rate of increase of the flow rate exceeds the first rate of increase threshold, determine that the water purification discharge branch meets the water production conditions.

[0028] As an optional implementation, in the first aspect of the present invention, determining whether the purified water discharge branch meets the stop-backflow condition includes:

[0029] Determine whether the pressure value of the purified water discharge branch is lower than a preset second pressure threshold. If the pressure value is determined to be lower than the second pressure threshold, determine that the purified water discharge branch meets the stop backflow condition; or...

[0030] Determine whether the purified water flow rate of the purified water discharge branch is lower than a preset second flow threshold. If it is determined that the purified water flow rate is lower than the second flow threshold, determine that the purified water discharge branch meets the stop backflow condition; or,

[0031] Determine whether the pressure value of the purified water discharge branch is in a decreasing state and whether the pressure decrease rate exceeds a preset second pressure decrease rate threshold. When it is determined that the pressure value is in a decreasing state and the pressure decrease rate exceeds the second pressure decrease rate threshold, determine that the purified water discharge branch meets the stop backflow condition; or...

[0032] Determine whether the water flow rate of the purified water discharge branch is in a decreasing state and whether the rate of decrease of the purified water flow rate exceeds a preset first rate of decrease of the flow rate threshold. When it is determined that the purified water flow rate is in the decreasing state and the rate of decrease of the flow rate exceeds the first rate of decrease of the flow rate threshold, determine that the purified water discharge branch meets the condition for stopping backflow.

[0033] As an optional implementation, in the first aspect of the present invention, determining whether the purified water discharge branch meets the water outage conditions includes:

[0034] Determine whether the pressure value of the purified water discharge branch exceeds a preset third pressure threshold. If the pressure value exceeds the third pressure threshold, determine that the purified water discharge branch meets the water outage conditions; or,

[0035] Determine whether the purified water flow rate of the purified water discharge branch is lower than a preset third flow threshold. If it is determined that the purified water flow rate is lower than the third flow threshold, determine that the purified water discharge branch meets the water outage conditions; or,

[0036] Determine whether the pressure value of the purified water discharge branch is increasing and whether the pressure increase rate exceeds a preset first pressure increase rate threshold. If the pressure value is in the increasing state and the pressure increase rate exceeds the first pressure increase rate threshold, determine that the purified water discharge branch meets the water outage conditions; or...

[0037] Determine whether the purified water flow rate of the purified water discharge branch is in a decreasing state and whether the rate of decrease of the purified water flow rate exceeds a preset second rate of decrease threshold. When it is determined that the purified water flow rate is in a decreasing state and the rate of decrease of the flow rate exceeds the second rate of decrease threshold, determine that the purified water discharge branch meets the water outage conditions; or,

[0038] Determine whether the water production time of the filtration unit exceeds a preset water production time threshold. If it is determined that the water production time exceeds the water production time threshold, determine that the purified water discharge branch meets the water outage conditions; or,

[0039] Determine whether the water production capacity of the filtration unit exceeds a preset water production capacity threshold. When it is determined that the water production capacity exceeds the water production capacity threshold, determine that the purified water discharge branch meets the water outage conditions.

[0040] The second aspect of this invention discloses a water purification system, which includes a raw water inlet branch, a purified water outlet branch, a purified water return branch, and a filtration unit. A pressurization device is provided on the raw water inlet branch, a purified water return device is provided on the purified water return branch, and a purified water outlet device is provided on the purified water outlet branch.

[0041] The filtration unit includes a filter element inlet, a filter element, and a purified water outlet. The filter element inlet is connected to the raw water inlet branch, and the purified water outlet is connected to the purified water discharge branch.

[0042] The purified water return branch and the purified water discharge branch intersect at the first purified water return intersection point, and the purified water return branch and the raw water inlet branch intersect at the second purified water return intersection point, which is located upstream of the booster device;

[0043] The booster device is used to treat the incoming water when the water purification discharge branch meets the water production conditions, so that the raw water is input into the filter unit through the raw water inlet branch;

[0044] The filtration unit is used to perform raw water filtration treatment when the purified water discharge branch meets the water production conditions, so that the filtration unit filters the raw water to obtain filtered purified water.

[0045] The purified water return device is used to perform purified water return treatment when the purified water discharge branch meets the water production conditions, so that the purified water produced by the filtration unit returns to the booster device through the purified water return branch and is then reintroduced into the filtration unit.

[0046] The purified water discharge branch is used to perform purified water discharge treatment when the purified water discharge branch meets the water production conditions, so that the purified water produced by the filtration unit is discharged through the purified water discharge branch.

[0047] As an optional implementation, in a second aspect of the invention, the purified water recirculation device is further configured to perform a shut-off operation when it is determined that the purified water discharge branch meets the stop recirculation condition, so that the purified water recirculation device stops performing the purified water recirculation treatment; and / or,

[0048] The booster device is also used to perform a shut-off operation when it is determined that the purified water discharge branch meets the water outage conditions, so that the booster device stops performing the water inlet treatment.

[0049] As an optional implementation, in a second aspect of the invention, the water purification system further includes:

[0050] A water purification parameter detection device is installed on the water purification discharge branch. The water purification parameter detection device is used to monitor the real-time water purification parameters of the water purification discharge branch. The real-time water purification parameters include the pressure value and / or water purification flow rate in the water purification discharge branch.

[0051] The water purification parameter detection device includes a pressure detection device and / or a water purification flow detection device.

[0052] A third aspect of this invention discloses an intelligent control device for starting and stopping a water purifier, the device comprising:

[0053] Memory containing executable program code;

[0054] A processor coupled to the memory;

[0055] The processor calls the executable program code stored in the memory to execute some or all of the steps in the intelligent control method for starting and stopping the water purifier disclosed in the first aspect of the present invention.

[0056] The fourth aspect of the present invention discloses a computer storage medium storing computer instructions, which, when invoked, are used to execute some or all of the steps in the intelligent control method for starting and stopping the water purifier disclosed in the first aspect of the present invention.

[0057] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0058] In this embodiment of the invention, the water purification system includes a raw water inlet branch, a purified water outlet branch, a purified water return branch, and a filtration unit. A booster device is installed on the raw water inlet branch, a purified water return device is installed on the purified water return branch, and a purified water outlet device is installed on the purified water outlet branch. The filtration unit includes a filter cartridge inlet, a filter cartridge, and a purified water outlet. The filter cartridge inlet is connected to the raw water inlet branch, the purified water outlet is connected to the purified water outlet branch, and the purified water outlet is also connected to the purified water return branch. The start-stop control method for the water purification system includes: determining whether the purified water outlet branch meets the control requirements. Water conditions: When it is determined that the purified water discharge branch meets the water production conditions, the booster device is controlled to process the incoming water, so that the raw water enters the filtration unit through the raw water inlet branch; the filtration unit is controlled to process the raw water, so that the filtration unit filters the raw water to obtain filtered purified water; the purified water return device is controlled to process the purified water return, so that the purified water produced by the filtration unit returns to the booster device through the purified water return branch and is then reintroduced into the filtration unit; the purified water discharge device is controlled to process the purified water discharge, so that the purified water produced by the filtration unit is discharged through the purified water discharge branch. Therefore, implementing this invention allows a portion of the purified water obtained from the water purification system to return to the raw water inlet branch through the purified water return branch, thereby reducing the water pressure in the purified water discharge branch and reducing the occurrence of erroneous shutdown of the water purification system due to excessive pressure in the purified water discharge branch. This reduces the frequency of start-ups and shutdowns of the water purification system and improves its operational stability. Attached Figure Description

[0059] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0060] Figure 1 This is a flowchart illustrating an intelligent control method for starting and stopping a water purifier, as disclosed in an embodiment of the present invention.

[0061] Figure 2 This is a flowchart illustrating another intelligent control method for starting and stopping a water purifier, as disclosed in an embodiment of the present invention.

[0062] Figure 3 This is a schematic diagram of the structure of a water purification system disclosed in an embodiment of the present invention;

[0063] Figure 4 This is a schematic diagram of another water purification system disclosed in an embodiment of the present invention;

[0064] Figure 5 This is a schematic diagram of the structure of an intelligent control device for starting and stopping a water purifier, as disclosed in an embodiment of the present invention.

[0065] The labels in the diagram represent the following meanings: Filter unit 1; Pressurization device 2; Purified water return device 3; Purified water discharge device 4; Purified water parameter detection device 5; Pressure detection device 6; Purified water flow detection device 7; First one-way valve 8; Solenoid valve 9; First purified water return intersection A; Second purified water return intersection B. Detailed Implementation

[0066] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0067] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product, or end that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or ends.

[0068] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0069] This invention discloses an intelligent control method and system for starting and stopping a water purification system. A portion of the purified water filtered by the system is returned to the raw water inlet branch via a purified water return branch. This serves to reduce pressure distribution in the purified water outlet branch, minimizing the possibility of erroneous system shutdown due to excessive pressure in the outlet branch. Consequently, it reduces frequent start-ups and shutdowns of the water purification system and improves its operational stability. Detailed descriptions follow.

[0070] Example 1

[0071] Please see Figure 1 , Figure 1 This is a flowchart illustrating an intelligent control method for starting and stopping a water purifier, as disclosed in an embodiment of the present invention. Figure 1The described intelligent control method for starting and stopping water purification systems can be applied to control the start and stop of water purification systems. For example... Figure 1 As shown, the intelligent control method for starting and stopping the water purifier can include the following operations:

[0072] 101. Determine whether the water purification discharge branch meets the water production conditions.

[0073] In this embodiment of the invention, the water purification system includes a raw water inlet branch, a purified water outlet branch, a purified water return branch, and a filtration unit. A booster device is provided on the raw water inlet branch, a purified water return device is provided on the purified water return branch, and a purified water outlet device is provided on the purified water outlet branch. The filtration unit includes a filter cartridge inlet, a filter cartridge, and a purified water outlet. The filter cartridge inlet is connected to the raw water inlet branch, the purified water outlet is connected to the purified water outlet branch, and the purified water outlet is also connected to the purified water return branch. Optionally, the booster device is used to generate a first-direction water pressure difference to cause the raw water to flow in the first direction. The booster device is located upstream of the filtration unit, wherein the first direction is the direction from the inlet of the raw water inlet branch to the filter cartridge inlet; the purified water return device is used to generate a second-direction water pressure difference to cause the purified water produced by the filtration unit to flow in the second direction, wherein the second direction is the direction from the purified water outlet to the booster device. Further optionally, the water purification system also includes a wastewater discharge branch, and the filtration unit further includes a wastewater outlet, wherein the wastewater outlet is connected to the wastewater discharge branch. Further optionally, a water purification parameter detection device may be installed on the water purification discharge branch. This device monitors the real-time water purification parameters of the water purification discharge branch. Therefore, embodiments of the present invention can determine whether the water purification discharge branch meets the water production conditions based on real-time water purification parameters. Preferably, the water purification discharge device is located upstream of the water purification parameter detection device. Further optionally, the real-time water purification parameters may include the pressure value and / or water purification flow rate in the water purification discharge branch. The water purification parameter detection device may include a pressure detection device and / or a water purification flow rate detection device, wherein the pressure detection device is used to detect the pressure value, and the water purification flow rate detection device is used to detect the water purification flow rate. Further optionally, the pressure detection device may include a pressure sensor, and the water purification flow rate detection device may include a flow sensor. Further optionally, the purified water return assembly may include a purified water return valve assembly, and the purified water discharge device may include a purified water discharge valve assembly. Optionally, the filtration unit may be a reverse osmosis filtration assembly, the pressurization device may be a booster pump, the purified water return valve assembly may include a first one-way valve and a solenoid valve, and the purified water discharge assembly may be a second one-way valve. Preferably, the first one-way valve is a one-way pressure relief valve to prevent purified water from flowing backwards in the purified water return branch, and a pressure relief threshold value can be set to allow purified water to return in the purified water return branch. In this embodiment of the invention, raw water is pressurized by the pressurization device and then enters the filtration unit through the raw water inlet branch. After filtration, it is separated into purified water and wastewater. The purified water can either return to the pressurization device and enter the filtration unit through the purified water return branch or be discharged through the purified water discharge branch; the wastewater can be discharged through the wastewater discharge branch.

[0074] As an optional implementation method, determining whether the purified water discharge branch meets the water production conditions may include:

[0075] Determine whether the pressure value in the purified water discharge branch is lower than a preset first pressure threshold. If the pressure value is determined to be lower than the first pressure threshold, determine that the purified water discharge branch meets the water production conditions; or...

[0076] The system determines whether the pressure value of the purified water discharge branch is decreasing and whether the rate of pressure decrease exceeds a preset first pressure decrease rate threshold. If it is determined that the pressure value is decreasing and the rate of pressure decrease exceeds the first pressure decrease rate threshold, the purified water discharge branch is deemed to meet the water production conditions; or...

[0077] Determine whether the purified water flow rate of the purified water discharge branch exceeds a preset first flow threshold. If the purified water flow rate exceeds the first flow threshold, determine that the purified water discharge branch meets the water production conditions; or,

[0078] Determine whether the water flow rate of the water purification discharge branch is increasing and whether the rate of increase exceeds the preset first flow rate threshold. When it is determined that the water flow rate is increasing and the rate of increase exceeds the first flow rate threshold, the water purification discharge branch is determined to meet the water production conditions.

[0079] Once the water terminal is activated, purified water begins to flow out of the purified water discharge branch. As a result, the pressure value in the purified water discharge branch will decrease, while the purified water flow rate will increase from zero.

[0080] It is evident that implementing this optional implementation method can determine whether the current water production conditions are met based on the principle that the real-time pressure value of the water purification discharge branch will decrease and the water purification flow will increase when the user starts using water, thereby improving the accuracy, reliability, and versatility of determining whether the water purification discharge branch meets the water production conditions.

[0081] 102. When it is determined that the water purification discharge branch meets the water production conditions, the booster device is controlled to perform water intake treatment so that the raw water is input into the filter unit through the raw water inlet branch.

[0082] As an optional implementation, controlling the booster device to treat the incoming water so that the raw water enters the filtration unit through the raw water inlet branch may include:

[0083] Based on the real-time water purification parameters collected by the water purification parameter detection device, determine the first operating parameters that match the booster device;

[0084] The control booster device processes the incoming water according to the first operating parameters, so that the raw water is input into the filter unit through the raw water inlet branch.

[0085] Optionally, the first operating parameter may include the opening value matching the booster device, the booster parameters matching the booster device (such as booster power), etc.

[0086] It is evident that this improves the matching degree between the working parameters of the booster device and the real-time water purification parameters, thereby improving the matching degree between the raw water volume input to the filter unit and the actual water consumption required. This enhances the accuracy and reliability of the booster device's water intake and reduces the occurrence of situations where the raw water volume is insufficient to meet water demand or where excessive raw water volume leads to excessive pressure in the purified water discharge branch.

[0087] 103. Control the filtration unit to perform raw water filtration treatment so that the filtration unit filters the raw water to obtain filtered clean water.

[0088] As an optional implementation, controlling the filtration unit to perform raw water filtration treatment, so that the filtration unit filters the raw water to obtain filtered clean water, may include:

[0089] Based on the real-time water purification parameters and / or the first operating parameters collected by the water purification parameter detection device, determine the second operating parameters that match the filter unit;

[0090] The control filtration unit filters the raw water according to the second operating parameters, so that the filtration unit filters the raw water and obtains filtered clean water.

[0091] It is evident that implementing this optional implementation method can improve the matching degree between the working parameters of the filtration unit and the real-time water purification parameters and the working parameters of the booster device, thereby improving the matching degree between the purified water volume filtered by the filtration unit and the actual required water volume, and thus improving the accuracy of the filtration unit in filtering raw water.

[0092] 104. Control the water purification return device to perform water purification return treatment, so that the purified water generated by the filtration unit returns to the booster device through the water purification return branch and is then reintroduced into the filtration unit.

[0093] As an optional implementation, controlling the water return device to perform water return treatment, so that the purified water produced by the filtration unit returns to the booster device via the water return branch and is then reintroduced into the filtration unit, may include:

[0094] Based on a combination of one or more of the real-time water purification parameters collected by the water purification parameter detection device, the first working parameter, and the second working parameter, a third working parameter matching the water purification return device is determined.

[0095] The water purification return device is controlled to perform water purification return treatment according to the third working parameters, so that the purified water generated by the filtration unit is returned to the booster device through the water purification return branch and then reintroduced into the filtration unit.

[0096] Optionally, the third operating parameter may include the operating parameters of the solenoid valve matched with the solenoid valve and / or the operating parameters of the check valve. The operating parameters of the solenoid valve may include the operating power of the solenoid valve, and the operating parameters of the check valve may include the opening degree of the check valve and / or the pressure relief threshold that allows the check valve to open.

[0097] As can be seen, implementing this optional implementation method can maintain a balance between the amount of purified water returned and the amount of purified water discharged, based on the matching degree between the real-time purified water parameters on the purified water return device and the purified water discharge branch, as well as the working parameters of the booster device and the filter unit, so as to minimize the pressure value on the purified water discharge branch while meeting the user's water demand as much as possible.

[0098] 105. Control the water purification discharge device to perform water purification discharge treatment so that the purified water produced by the filtration unit is discharged through the water purification discharge branch.

[0099] As an optional implementation, controlling the water purification discharge device to perform water purification discharge treatment, so that the purified water produced by the filtration unit is discharged through the water purification discharge branch, may include:

[0100] Based on a combination of one or more of the real-time water purification parameters, the first working parameter, and the second working parameter collected by the water purification parameter detection device, a fourth working parameter matching the water purification discharge device is determined.

[0101] The water purification discharge device controls the water purification discharge process according to the fourth operating parameter, so that the purified water produced by the filtration unit is discharged through the water purification discharge branch.

[0102] Optionally, the fourth operating parameter may include the opening value that matches the water purification discharge device.

[0103] In this embodiment of the invention, optionally, when it is determined that the purified water discharge branch meets the water production conditions, the booster device, the filter unit, the purified water return device, and the purified water discharge device can be activated simultaneously, or the booster device, the filter unit, the purified water return device, and the purified water discharge device can be activated one by one. This embodiment of the invention does not limit the specific actions taken.

[0104] It is evident that implementing this optional implementation method can improve the matching degree between the operating parameters of the water purification discharge device and other operating parameters upstream, thereby further improving the accuracy and reliability of water purification discharge control.

[0105] It should be noted that in other embodiments, steps 104 and 105 are not sequential. That is, after step 103 is executed, step 104 can be executed first, step 105 can be executed first, or steps 104 and 105 can be executed simultaneously.

[0106] As can be seen, implementing the embodiments of the present invention can return a portion of the purified water obtained by the water purification system to the raw water inlet branch through the purified water return branch, so as to reduce the water pressure in the purified water discharge branch, reduce the occurrence of incorrect shutdown of the water purification system due to excessive pressure in the purified water discharge branch, thereby reducing the occurrence of frequent start-up and shutdown of the water purification system and improving the working stability of the water purification system.

[0107] Example 2

[0108] Please see Figure 2 , Figure 2 This is a flowchart illustrating another intelligent control method for water purification start-up and shutdown disclosed in an embodiment of the present invention. Wherein, Figure 2 The described intelligent control method for starting and stopping water purification systems can be applied to control the start and stop of water purification systems. For example... Figure 2 As shown, the intelligent control method for starting and stopping the water purifier can include the following operations:

[0109] 201. Determine whether the water purification discharge branch meets the water production conditions.

[0110] 202. When it is determined that the water purification discharge branch meets the water production conditions, the booster device is controlled to perform water intake treatment so that the raw water is input into the filter unit through the raw water inlet branch.

[0111] 203. Control the filtration unit to perform raw water filtration treatment so that the filtration unit filters the raw water to obtain filtered clean water.

[0112] 204. Control the water return device to perform water return treatment so that the purified water produced by the filter unit returns to the booster device through the water return branch and is then reintroduced into the filter unit.

[0113] 205. Control the water purification discharge device to perform water purification discharge treatment so that the purified water produced by the filtration unit is discharged through the water purification discharge branch.

[0114] 206. Determine whether the water purification discharge branch meets the conditions for stopping backflow.

[0115] As an optional implementation method, determining whether the purified water discharge branch meets the stop-backflow condition may include:

[0116] Determine whether the pressure value of the purified water discharge branch is lower than a preset second pressure threshold. If the pressure value is determined to be lower than the second pressure threshold, determine that the purified water discharge branch meets the condition for stopping backflow; or,

[0117] Determine whether the purified water flow rate of the purified water discharge branch is lower than a preset second flow threshold. If it is determined that the purified water flow rate is lower than the second flow threshold, determine that the purified water discharge branch meets the stop-backflow condition; or,

[0118] Determine whether the pressure value of the purified water discharge branch is decreasing and whether the rate of pressure decrease exceeds a preset second pressure decrease rate threshold. If it is determined that the pressure value is decreasing and the rate of pressure decrease exceeds the second pressure decrease rate threshold, then the purified water discharge branch meets the stop-backflow condition; or...

[0119] Determine whether the water flow rate of the water discharge branch is decreasing and whether the rate of decrease of the water flow rate exceeds the preset first flow rate decrease threshold. When it is determined that the water flow rate is decreasing and the rate of decrease of the flow rate exceeds the first flow rate decrease threshold, it is determined that the water discharge branch meets the condition for stopping backflow.

[0120] It is evident that implementing this optional implementation method can determine whether the current conditions for stopping backflow are met based on the principle that the pressure value and the flow rate of purified water decrease when the water supply of the purified water discharge branch is insufficient, thereby improving the accuracy and reliability of determining whether the purified water discharge branch meets the conditions for stopping backflow.

[0121] 207. When it is determined that the purified water discharge branch meets the conditions for stopping backflow, control the purified water backflow device to perform a shut-off operation so that the purified water backflow device stops performing purified water backflow treatment.

[0122] 208. Determine whether the water purification discharge branch meets the conditions for water outage.

[0123] As an optional implementation method, determining whether the water purification discharge branch meets the water outage conditions may include:

[0124] Determine whether the pressure value of the purified water discharge branch exceeds the preset third pressure threshold. If the pressure value exceeds the third pressure threshold, determine that the purified water discharge branch meets the water outage conditions; or,

[0125] Determine whether the purified water flow rate of the purified water discharge branch is lower than the preset third flow threshold. If the purified water flow rate is determined to be lower than the third flow threshold, determine that the purified water discharge branch meets the water outage conditions; or,

[0126] The system determines whether the pressure value of the purified water discharge branch is increasing and whether the rate of pressure increase exceeds a preset first pressure increase rate threshold. If the pressure value is increasing and the rate of pressure increase exceeds the first pressure increase rate threshold, the purified water discharge branch is determined to meet the water outage conditions; or...

[0127] Determine whether the purified water flow rate of the purified water discharge branch is decreasing and whether the rate of decrease exceeds a preset second flow rate decrease threshold. If it is determined that the purified water flow rate is decreasing and the rate of decrease exceeds the second flow rate decrease threshold, then the purified water discharge branch meets the water outage conditions; or,

[0128] The system determines whether the water production time of the filtration unit exceeds a preset water production time threshold. If it is determined that the water production time exceeds the threshold, the system determines that the purified water discharge branch meets the water outage conditions; or,

[0129] Determine whether the water production capacity of the filtration unit exceeds the preset water production capacity threshold. If it is determined that the water production capacity exceeds the water production capacity threshold, determine that the purified water discharge branch meets the water outage conditions.

[0130] In this embodiment of the invention, optionally, the third pressure threshold is higher than the second pressure threshold, and the third flow threshold is lower than the second flow threshold.

[0131] As can be seen, implementing this optional implementation method can determine whether the current water outage conditions are met based on the principle that the pressure value in the water purification discharge branch will increase and the water purification flow will decrease when the user stops using water. This improves the accuracy and reliability of determining whether the water purification discharge branch meets the water outage conditions. It can also limit the water production capacity and water production time of the filter unit, reducing the waste of water resources caused by users forgetting to turn off the water switch.

[0132] 209. When it is determined that the water purification discharge branch meets the water outage conditions, control the booster device to perform a shutdown operation so that the booster device stops performing water intake treatment.

[0133] In this embodiment of the invention, for other descriptions of steps 201-205, please refer to the detailed description of steps 101-105 in Embodiment 1 respectively. This embodiment of the invention will not repeat them.

[0134] It should be noted that in other embodiments, the solutions corresponding to steps 206-207 and steps 208-209 are both optional solutions. That is, after executing step 205, only steps 206-207 or only steps 208-209 can be executed.

[0135] It should be noted that in other embodiments, steps 204 and 205 are not sequential. That is, after step 203 is executed, step 204 can be executed first, step 205 can be executed first, or steps 204 and 205 can be executed simultaneously.

[0136] To better understand the technical solutions described in the embodiments of the present invention, the following examples illustrate the application scenarios of the embodiments of the present invention:

[0137] A pressure detection device and a water flow detection device are installed on the purified water discharge branch to monitor the pressure and water flow in real time. The purified water discharge branch leads to the water terminal. After the water purification system is powered on, when the water terminal opens the inlet valve, the pressure detection device detects a decrease in the pressure in the purified water discharge branch. When the pressure drops to the preset pressure threshold P1, it is determined that there is a water demand at the water terminal. At this time, the water purification system starts working, starting the booster pump on the raw water inlet branch to input tap water (i.e., raw water) into the filtration unit so that the filtration unit filters the tap water to obtain purified water. The purified water can flow to the water terminal through the purified water discharge branch. At the same time, the solenoid valve on the purified water return branch can be activated to allow excess purified water to flow back to the booster device through the purified water return branch, preventing excessive water supply pressure in the purified water discharge branch. During the water supply process to the user terminal, the purified water flow rate is monitored in real time on the purified water discharge branch. When the detected purified water flow rate is lower than the preset flow rate threshold F, the solenoid valve can be closed to prevent purified water from flowing back to the booster device. When the pressure detection device detects that the pressure value in the purified water discharge branch exceeds the pressure threshold P2, it is determined that there is no water demand at the user terminal. At this time, the water purification system is in standby mode, and the booster device is turned off, preventing raw water from entering the filter unit through the booster device. In standby mode, the water purification system continues to monitor the pressure value in the purified water discharge branch. When the pressure value falls below the pressure threshold P1 again, the above steps are repeated.

[0138] As can be seen, implementing the embodiments of the present invention can return a portion of the purified water obtained by the water purification system to the raw water inlet branch through the purified water return branch, so as to reduce the water pressure in the purified water discharge branch, thereby reducing the occurrence of incorrect shutdown of the water purification system due to excessive pressure in the purified water discharge branch, thus reducing the occurrence of frequent start-up and shutdown of the water purification system, improving the working stability of the water purification system. In addition, it can also stop the purified water return when the pressure value and purified water flow rate in the purified water discharge branch decrease, thereby reducing the occurrence of insufficient water supply at the water terminal due to purified water return, and meeting the water needs of users as much as possible.

[0139] In an optional embodiment, the method may further include:

[0140] After the water purification return device stops performing water purification return treatment, determine whether the water purification discharge branch meets the conditions for re-return.

[0141] When it is determined that the purified water discharge branch meets the conditions for recirculation, the purified water system is controlled to re-execute the purified water recirculation treatment.

[0142] In this optional embodiment, as an optional implementation method, determining whether the purified water discharge branch meets the recirculation condition may include:

[0143] Determine whether the pressure value of the purified water discharge branch exceeds a preset second pressure threshold. If the pressure value exceeds the second pressure threshold, determine that the purified water discharge branch meets the recirculation condition; or...

[0144] Determine whether the purified water flow rate of the purified water discharge branch exceeds a preset second flow threshold. If the purified water flow rate exceeds the second flow threshold, determine that the purified water discharge branch meets the recirculation condition; or,

[0145] The system determines whether the pressure value of the purified water discharge branch is increasing and whether the rate of pressure increase exceeds a preset second pressure increase rate threshold. If the pressure value is increasing and the rate of pressure increase exceeds the second pressure increase rate threshold, the purified water discharge branch is determined to meet the recirculation condition; or...

[0146] Determine whether the water flow rate of the water discharge branch is increasing and whether the rate of increase exceeds the second flow rate threshold. If it is determined that the water flow rate is increasing and the rate of increase exceeds the second flow rate threshold, then the water discharge branch meets the recirculation condition.

[0147] In this optional implementation, the first pressure growth rate threshold may be higher than the second pressure growth rate threshold.

[0148] As can be seen, implementing this optional embodiment can determine whether recirculation is needed based on whether the pressure value and flow rate of the purified water discharge branch increase and meet specific increase conditions. This reduces the occurrence of erroneous shutdown of the purified water system due to the pressure value of the purified water discharge branch increasing after the purified water recirculation stops, and improves the flexibility of purified water recirculation control.

[0149] In another alternative embodiment, the method may further include:

[0150] When it is determined that the water purification discharge branch meets the water production conditions, before controlling the water purification return device to perform water purification return treatment, it is determined whether the water purification discharge branch meets the return start conditions.

[0151] When it is determined that the purified water discharge branch meets the backflow start-up conditions, the above-mentioned control purified water backflow device is triggered to perform purified water backflow processing, so that the purified water generated by the filter unit flows back to the booster device through the purified water backflow branch and is then input into the filter unit again.

[0152] Optionally, the method may further include:

[0153] When it is determined that the water purification discharge branch does not meet the backflow start-up conditions, the above-mentioned control of the water purification discharge device is triggered to perform water purification discharge treatment, so that the purified water generated by the filtration unit is discharged through the water purification discharge branch.

[0154] As can be seen, implementing this optional embodiment can further determine whether there is a need for purified water recirculation when a water production demand is identified, which helps to reduce unnecessary purified water recirculation operations so as to meet the user's water demand as much as possible.

[0155] In this optional embodiment, as an optional implementation method, determining whether the purified water discharge branch meets the backflow start-up conditions may include:

[0156] Determine whether the pressure value of the purified water discharge branch exceeds a preset second pressure threshold. If the pressure value exceeds the second pressure threshold, determine that the purified water discharge branch meets the backflow start-up condition; or...

[0157] Determine whether the purified water flow rate of the purified water discharge branch exceeds a preset second flow threshold. If the purified water flow rate exceeds the second flow threshold, determine that the purified water discharge branch meets the backflow start-up condition; or,

[0158] Determine whether the pressure drop rate of the water purification discharge branch is lower than the preset third pressure drop rate threshold. If the pressure drop rate is determined to be lower than the third pressure drop rate threshold, the water purification discharge branch is determined to meet the backflow start-up condition; or,

[0159] Determine whether the flow rate growth rate of the purified water discharge branch exceeds the preset third flow rate growth rate threshold. When it is determined that the flow rate growth rate exceeds the third flow rate growth rate threshold, it is determined that the purified water discharge branch meets the backflow start-up condition.

[0160] Optionally, the second pressure threshold is lower than the first pressure threshold, the second flow threshold is greater than the first flow threshold, the third flow rate threshold is higher than the first flow rate threshold, and the third pressure decrease rate threshold is higher than the first pressure decrease rate threshold.

[0161] It is evident that implementing this optional implementation method can determine whether the water purification discharge branch meets the backflow start-up conditions when the water purification system starts up, such as when the pressure value is high, the pressure value decreases too slowly, the water purification flow rate is high, or the water purification flow rate increases too quickly. This improves the accuracy and reliability of determining whether the water purification discharge branch meets the backflow start-up conditions, thereby enabling water purification backflow while meeting the user's water demand as much as possible when the water purification system starts up.

[0162] In yet another optional embodiment, the method may further include:

[0163] When the water purification return device performs water purification return treatment, it is determined whether the water purification discharge branch meets the return adjustment conditions;

[0164] When it is determined that the purified water discharge branch meets the backflow adjustment conditions, adjust the purified water backflow parameters of the purified water backflow device.

[0165] The water purification return device controls the water purification return process according to the adjusted water purification return parameters.

[0166] As can be seen, implementing this optional embodiment also enables real-time control of the water return parameters of the water discharge device during water return, thereby improving the accuracy and reliability of water return.

[0167] In this optional embodiment, as an optional implementation method, determining whether the purified water discharge branch meets the backflow adjustment conditions may include:

[0168] Determine whether the real-time water purification parameters of the water purification discharge branch are changing;

[0169] When it is determined that the real-time water purification parameters of the water purification discharge branch are changing, it is determined whether the rate of change of the real-time water purification parameters is within the preset rate of change range.

[0170] When it is determined that the rate of change of the real-time water purification parameters is within the range of the rate of change, it is determined that the water purification discharge branch meets the backflow adjustment conditions.

[0171] In this optional implementation, if the real-time water purification parameter is a pressure value and the change state is increasing, then the preset change rate range is: 0 to a first pressure increase rate threshold; if the change state is decreasing, then the preset change rate range is: 0 to a second pressure decrease rate threshold. If the real-time water purification parameter is a water purification flow rate and the change state is increasing, then the preset change rate range is: greater than 0; if the change state is decreasing, then the preset change rate range is: 0 to a first flow rate decrease rate threshold.

[0172] In this optional implementation, adjusting the water return parameters of the water return device may include:

[0173] The water return parameters of the water return device are adjusted based on the real-time water purification parameters and the rate of change of the real-time water purification parameters.

[0174] It is evident that implementing this optional implementation method can adjust the water return parameters when real-time water parameters such as pressure and water flow rate in the water discharge branch change, thereby improving the stability of water discharge by enhancing the stability of water return.

[0175] Example 3

[0176] Please see Figure 3 , Figure 3 This is a schematic diagram of a water purification system disclosed in an embodiment of the present invention. Wherein, as... Figure 3As shown, the water purification system includes a raw water inlet branch, a purified water outlet branch, a purified water return branch, and a filter unit 1. A booster device 2 is provided on the raw water inlet branch, a purified water return device 3 is provided on the purified water return branch, and a purified water outlet device 4 is provided on the purified water outlet branch.

[0177] The filter unit 1 may include a filter element inlet, a filter element, and a purified water outlet. The filter element inlet is connected to the raw water inlet branch, and the purified water outlet is connected to the purified water discharge branch.

[0178] The purified water return branch and the purified water discharge branch intersect at the first purified water return intersection point A, and the purified water return branch and the raw water inlet branch intersect at the second purified water return intersection point B. The second purified water return intersection point B is located upstream of the booster device 2.

[0179] The booster device 2 is used to treat the incoming water when the water purification discharge branch meets the water production conditions, so that the raw water enters the filter unit 1 through the raw water inlet branch;

[0180] Filter unit 1 is used to filter raw water when the water purification discharge branch meets the water production conditions, so that filter unit 1 filters the raw water to obtain filtered purified water.

[0181] The purified water return device 3 is used to perform purified water return treatment when the purified water discharge branch meets the water production conditions, so that the purified water produced by the filter unit 1 returns to the booster device 2 through the purified water return branch and is then reintroduced into the filter unit 1.

[0182] The purified water discharge branch is used to discharge purified water when the purified water discharge branch meets the water production conditions, so that the purified water produced by the filter unit 1 is discharged through the purified water discharge branch.

[0183] It is evident that implementation Figure 3 The described water purification system can return a portion of the purified water to the raw water inlet branch through a purified water return branch. This serves to reduce the water pressure in the purified water outlet branch, minimizing the possibility of erroneous system shutdown due to excessive pressure in the outlet branch. Consequently, it reduces frequent start-ups and shutdowns of the water purification system and improves its operational stability.

[0184] In an optional embodiment, such as Figure 3 As shown, the purified water return device 3 is also used to perform a shut-off operation when it is determined that the purified water discharge branch meets the stop-return condition, so that the purified water return device 3 stops performing purified water return treatment; and / or,

[0185] The booster device 2 is also used to perform a shut-off operation when it is determined that the water discharge branch meets the water outage conditions, so that the booster device 2 stops performing water inlet treatment.

[0186] It is evident that implementation Figure 3 The described water purification system can stop the backflow of purified water when the conditions for stopping backflow are met in the purified water discharge branch, thereby reducing the occurrence of insufficient water supply at the water terminal due to purified water backflow and meeting the water demand of users as much as possible. It can also directly shut down the booster device when the conditions for water outage are met in the purified water discharge branch, thereby improving the intelligence of the start-up and shutdown control of the water purification system.

[0187] In another alternative embodiment, such as Figure 3 As shown, the purified water recirculation device 3 is also used to restart the purified water recirculation process after the purified water recirculation treatment has stopped, when it is determined that the purified water discharge branch meets the conditions for restarting the recirculation; and / or,

[0188] The purified water return device 3 is also used to trigger the above-mentioned purified water return process when it is determined that the purified water discharge branch meets the water production conditions and when the purified water discharge branch meets the return start conditions.

[0189] It is evident that implementation Figure 3 The described water purification system can also perform water recirculation only when required, improving the flexibility of water recirculation.

[0190] In yet another alternative embodiment, such as Figure 3 As shown, the purified water return device 3 is also used to perform purified water return treatment according to the adjusted purified water return parameters if it is determined that the purified water discharge branch meets the return adjustment conditions during purified water return treatment.

[0191] It is evident that implementation Figure 3 The described water purification system also allows for flexible adjustment of the water return parameters.

[0192] In yet another alternative embodiment, such as Figure 4 As shown, the water purification system may also include:

[0193] A water purification parameter detection device 5 is installed on the water purification discharge branch line. The water purification parameter detection device 5 is used to monitor the real-time water purification parameters of the water purification discharge branch line.

[0194] Optionally, real-time water purification parameters may include pressure values ​​and / or water flow rates in the water purification discharge branch; the water purification parameter detection device 5 may include a pressure detection device 6 and / or a water flow rate detection device 7.

[0195] Optionally, the water purification discharge device 4 is located upstream of the water purification parameter detection device 5.

[0196] Optionally, the installation positions of the pressure detection device 6 and the purified water flow detection device 7 can be interchanged, that is, the pressure detection device 6 is located upstream of the purified water flow detection device 7, or the purified water flow detection device 7 is located upstream of the pressure detection device 6.

[0197] It is evident that implementation Figure 4 The described water purification system can be equipped with pressure detection devices and water flow detection devices in the water purification discharge branch, thereby meeting the requirements for detecting the pressure value and water flow of the water purification discharge branch.

[0198] In yet another alternative embodiment, such as Figure 4 As shown, the purified water return device 3 may include a purified water return valve assembly, and the purified water discharge device 4 may include a purified water discharge valve assembly.

[0199] In this optional embodiment, optionally, such as Figure 4 As shown, the purified water return valve assembly may include a first check valve 8 and a solenoid valve 9.

[0200] Optionally, solenoid valve 9 is used to generate a water pressure difference in the return direction, which is the direction from the clean water outlet to the booster device.

[0201] Preferably, the first one-way valve 8 is a one-way pressure relief valve; the one-way pressure relief valve is used to allow the purified water generated by the filter unit to flow back to the booster device through the one-way pressure relief valve when the water pressure difference in the reverse flow exceeds the preset pressure relief valve threshold.

[0202] Optionally, the water discharge valve assembly can be a second check valve, wherein all check valves can prevent the water flow in their respective pipelines from flowing backwards.

[0203] Optionally, the installation positions of the first check valve 8 and the solenoid valve 9 can be interchanged, that is, the solenoid valve 9 is located upstream of the first check valve 8, or the first check valve 8 is located upstream of the solenoid valve 9.

[0204] In yet another alternative embodiment, such as Figure 4 As shown, the water purification system may also include a wastewater discharge branch, and the filtration unit may also include a wastewater outlet, wherein the wastewater outlet is connected to the wastewater discharge branch; the wastewater discharge branch is used to discharge and treat the wastewater generated when the filtration unit filters the raw water. This enables the discharge of filtered wastewater.

[0205] Example 4

[0206] Please see Figure 5 , Figure 5 This is a schematic diagram of the structure of an intelligent control device for starting and stopping a water purifier, as disclosed in an embodiment of the present invention. Figure 5 As shown, the intelligent control device for starting and stopping the water purifier may include:

[0207] Memory 301 storing executable program code;

[0208] Processor 302 coupled to memory 301;

[0209] The processor 302 calls the executable program code stored in the memory 301 to execute some or all of the steps in the intelligent control method for starting and stopping the water purifier as described in Embodiment 1 or Embodiment 2 of the present invention.

[0210] Example 5

[0211] This invention discloses a computer storage medium storing computer instructions. When these computer instructions are invoked, they are used to execute some or all of the steps in the intelligent control method for starting and stopping a water purifier as described in Embodiment 1 or Embodiment 2 of this invention.

[0212] Example 6

[0213] This invention discloses a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform the steps in the intelligent control method for starting and stopping a water purifier as described in Embodiment 1 or Embodiment 2.

[0214] The device embodiments described above are merely illustrative. The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0215] Through the detailed description of the above embodiments, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, including read-only memory (ROM), random access memory (RAM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), one-time programmable read-only memory (OTPROM), electrically-Erasable Programmable Read-Only Memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0216] Finally, it should be noted that the intelligent control method and water purification system for starting and stopping a water purifier disclosed in the embodiments of the present invention are merely preferred embodiments of the present invention and are only used to illustrate the technical solutions of the present invention, not 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.

Claims

1. A smart control method for starting and stopping a water purifier, characterized in that, The method is applied to control the start and stop of a water purification system. The water purification system includes a raw water inlet branch, a purified water outlet branch, a purified water return branch, and a filtration unit. A booster device is installed on the raw water inlet branch, a purified water return device is installed on the purified water return branch, and a purified water outlet device is installed on the purified water outlet branch. The filtration unit includes a filter inlet, a filter element, and a purified water outlet. The filter inlet is connected to the raw water inlet branch, the purified water outlet is connected to the purified water outlet branch, and the purified water outlet is also connected to the purified water return branch. The method includes: Determine whether the purified water discharge branch meets the water production conditions; When it is determined that the water purification discharge branch meets the water production conditions, the booster device is controlled to perform water intake treatment so that the raw water is input into the filter unit through the raw water inlet branch. The filtration unit is controlled to perform raw water filtration treatment, so that the filtration unit filters the raw water to obtain filtered clean water; The water purification return device is controlled to perform water purification return treatment, so that the purified water produced by the filtration unit flows back to the booster device through the water purification return branch and is then input into the filtration unit again. The water purification discharge device is controlled to perform water purification discharge treatment so that the purified water produced by the filtration unit is discharged through the water purification discharge branch. Determine whether the purified water discharge branch meets the stop backflow condition; when it is determined that the purified water discharge branch meets the stop backflow condition, control the purified water backflow device to perform a shutdown operation so that the purified water backflow device stops performing the purified water backflow treatment; And, the determination of whether the purified water discharge branch meets the water production conditions includes: Determine whether the purified water flow rate of the purified water discharge branch exceeds a preset first flow rate threshold. If it is determined that the purified water flow rate exceeds the first flow rate threshold, determine that the purified water discharge branch meets the water production conditions; or, Determine whether the water flow rate of the water purification discharge branch is in an increasing state and whether the rate of increase of the water flow rate exceeds a preset first rate of increase threshold. When it is determined that the water flow rate is in the increasing state and the rate of increase of the water flow rate exceeds the first rate of increase threshold, determine that the water purification discharge branch meets the water production conditions. And, determining whether the purified water discharge branch meets the stop-backflow condition includes: Determine whether the purified water flow rate of the purified water discharge branch is lower than a preset second flow threshold. If it is determined that the purified water flow rate is lower than the second flow threshold, determine that the purified water discharge branch meets the stop backflow condition; or, Determine whether the pressure value of the purified water discharge branch is in a decreasing state and whether the pressure decrease rate exceeds a preset second pressure decrease rate threshold. When it is determined that the pressure value is in a decreasing state and the pressure decrease rate exceeds the second pressure decrease rate threshold, determine that the purified water discharge branch meets the stop backflow condition; or... Determine whether the water flow rate of the purified water discharge branch is in a decreasing state and whether the rate of decrease of the purified water flow rate exceeds a preset first rate of decrease of the flow rate threshold. When it is determined that the purified water flow rate is in the decreasing state and the rate of decrease of the flow rate exceeds the first rate of decrease of the flow rate threshold, determine that the purified water discharge branch meets the condition for stopping backflow.

2. The intelligent control method for starting and stopping the water purification system according to claim 1, characterized in that, The method further includes: Determine whether the purified water discharge branch meets the water outage conditions; when it is determined that the purified water discharge branch meets the water outage conditions, control the booster device to perform a shutdown operation so that the booster device stops performing the water inlet treatment.

3. The intelligent control method for starting and stopping the water purification system according to claim 2, characterized in that, The method further includes: After the water purification return device stops performing the water purification return process, it is determined whether the water purification discharge branch meets the re-return conditions; when it is determined that the water purification discharge branch meets the re-return conditions, the water purification system is controlled to resume the water purification return process; and / or, When it is determined that the purified water discharge branch meets the water production conditions, before controlling the purified water return device to perform purified water return treatment, it is determined whether the purified water discharge branch meets the return start conditions; when it is determined that the purified water discharge branch meets the return start conditions, the operation of controlling the purified water return device to perform purified water return treatment is triggered, so that the purified water generated by the filtration unit returns to the booster device through the purified water return branch and is then input into the filtration unit again.

4. The intelligent control method for starting and stopping the water purification system according to claim 2, characterized in that, The method further includes: When the purified water return device performs the purified water return treatment, it is determined whether the purified water discharge branch meets the return adjustment conditions. When it is determined that the purified water discharge branch meets the backflow adjustment conditions, the purified water backflow parameters of the purified water backflow device are adjusted. The purified water return device is controlled to perform purified water return treatment according to the adjusted purified water return parameters.

5. The intelligent control method for starting and stopping the water purifier according to any one of claims 1-4, characterized in that, The determination of whether the purified water discharge branch meets the water production conditions also includes: Determine whether the pressure value in the purified water discharge branch is lower than a preset first pressure threshold. If the pressure value is determined to be lower than the first pressure threshold, determine that the purified water discharge branch meets the water production conditions; or... Determine whether the pressure value of the purified water discharge branch is in a decreasing state and whether the pressure decrease rate exceeds a preset first pressure decrease rate threshold. When it is determined that the pressure value is in the decreasing state and the pressure decrease rate exceeds the first pressure decrease rate threshold, determine that the purified water discharge branch meets the water production conditions.

6. The intelligent control method for starting and stopping the water purification system according to any one of claims 1-4, characterized in that, The determination of whether the purified water discharge branch meets the stop backflow condition also includes: Determine whether the pressure value of the purified water discharge branch is lower than a preset second pressure threshold. When it is determined that the pressure value is lower than the second pressure threshold, determine that the purified water discharge branch meets the stop backflow condition.

7. The intelligent control method for starting and stopping the water purifier according to any one of claims 2-4, characterized in that, The determination of whether the purified water discharge branch meets the water outage conditions includes: Determine whether the pressure value of the purified water discharge branch exceeds a preset third pressure threshold. If the pressure value exceeds the third pressure threshold, determine that the purified water discharge branch meets the water outage conditions; or, Determine whether the purified water flow rate of the purified water discharge branch is lower than a preset third flow threshold. If it is determined that the purified water flow rate is lower than the third flow threshold, determine that the purified water discharge branch meets the water outage conditions; or, Determine whether the pressure value of the purified water discharge branch is increasing and whether the pressure increase rate exceeds a preset first pressure increase rate threshold. If the pressure value is in the increasing state and the pressure increase rate exceeds the first pressure increase rate threshold, determine that the purified water discharge branch meets the water outage conditions; or... Determine whether the purified water flow rate of the purified water discharge branch is in a decreasing state and whether the rate of decrease of the purified water flow rate exceeds a preset second rate of decrease threshold. When it is determined that the purified water flow rate is in a decreasing state and the rate of decrease of the flow rate exceeds the second rate of decrease threshold, determine that the purified water discharge branch meets the water outage conditions; or, Determine whether the water production time of the filtration unit exceeds a preset water production time threshold. If it is determined that the water production time exceeds the water production time threshold, determine that the purified water discharge branch meets the water outage conditions; or, Determine whether the water production capacity of the filtration unit exceeds a preset water production capacity threshold. When it is determined that the water production capacity exceeds the water production capacity threshold, determine that the purified water discharge branch meets the water outage conditions.

8. A water purification system, characterized in that, The water purification system is used to execute the intelligent control method for starting and stopping the water purification system according to any one of claims 1-7. The water purification system includes a raw water inlet branch, a purified water outlet branch, a purified water return branch, and a filtration unit. A pressurization device is provided on the raw water inlet branch, a purified water return device is provided on the purified water return branch, and a purified water outlet device is provided on the purified water outlet branch. The filtration unit includes a filter element inlet, a filter element, and a purified water outlet. The filter element inlet is connected to the raw water inlet branch, and the purified water outlet is connected to the purified water discharge branch. The purified water return branch and the purified water discharge branch intersect at the first purified water return intersection point, and the purified water return branch and the raw water inlet branch intersect at the second purified water return intersection point, which is located upstream of the booster device; The booster device is used to treat the incoming water when the water purification discharge branch meets the water production conditions, so that the raw water is input into the filter unit through the raw water inlet branch; The filtration unit is used to perform raw water filtration treatment when the purified water discharge branch meets the water production conditions, so that the filtration unit filters the raw water to obtain filtered purified water. The purified water return device is used to perform purified water return treatment when the purified water discharge branch meets the water production conditions, so that the purified water produced by the filtration unit returns to the booster device through the purified water return branch and is then reintroduced into the filtration unit. The purified water discharge branch is used to perform purified water discharge treatment when the purified water discharge branch meets the water production conditions, so that the purified water produced by the filtration unit is discharged through the purified water discharge branch.

9. The water purification system according to claim 8, characterized in that, The purified water return device is also used to perform a shut-off operation when it is determined that the purified water discharge branch meets the stop return condition, so that the purified water return device stops performing the purified water return process; And / or, The booster device is also used to perform a shut-off operation when it is determined that the purified water discharge branch meets the water outage conditions, so that the booster device stops performing the water inlet treatment.

10. The water purification system according to claim 8 or 9, characterized in that, The water purification system also includes: A water purification parameter detection device is installed on the water purification discharge branch. The water purification parameter detection device is used to monitor the real-time water purification parameters of the water purification discharge branch. The real-time water purification parameters include the pressure value and / or water purification flow rate in the water purification discharge branch. The water purification parameter detection device includes a pressure detection device and / or a water purification flow detection device.

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