Regeneration control method, domestic water purifying device, and computer-readable storage medium

Abstract

The application discloses a regeneration control method, a household water purifying device and a computer readable storage medium, wherein the regeneration control method is used for making the flow rate of water flowing through the electrically-driven desalination assembly reach a first threshold value, reversely electrifying the electrically-driven desalination assembly through the power supply assembly, and acquiring the power supply parameter of the power supply assembly in real time; then when the power supply parameter reaches a first target value, making the flow rate of water flowing through the electrically-driven desalination assembly reach a second threshold value, and positively electrifying the electrically-driven desalination assembly through the power supply assembly. The technical scheme provides a regeneration control method, a household water purifying device and a computer readable storage medium, which can effectively reduce the ion concentration of residual water of the electrically-driven desalination assembly, is beneficial to the subsequent purification treatment, avoids the phenomenon that the pure water concentration of the electrically-driven desalination assembly is too high in the initial stage of the purification treatment, and overcomes the defects in the prior art.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, and in particular to a regeneration control method, a household water purification device, and a computer-readable storage medium. Background Technology

[0002] With societal progress and improved living standards, people are paying increasing attention to the hygiene of their food and drinking water. Currently, tap water is usually treated using chlorination, which effectively prevents waterborne diseases. However, tap water contains salt, impurities, and residual chlorine, making it unsuitable for direct consumption. It needs to be purified before drinking.

[0003] In existing technologies, water can be treated using electrically driven desalination components to improve water quality. During operation, ions within the electrically driven desalination component exchange with ions in the water, purifying the water. After a period of use, the component needs regeneration. Currently, tap water is typically used for regeneration, and regeneration ends when a set duration is reached. However, water quality varies from region to region, resulting in different ion adsorption rates for the same amount of time under different water conditions. Controlling the regeneration process solely by the duration of regeneration cannot guarantee the regeneration effectiveness of the component.

[0004] Furthermore, existing electrically driven desalination units have a high ion concentration in the water within their flow channels after regeneration. Generally, they require rinsing with pure water and / or raw water to reduce this concentration. Since the volume of water inside the electrically driven desalination unit after regeneration is large, the amount of pure water and / or raw water used for this second rinsing accounts for more than 30% of the total water consumption in the entire rinsing and regeneration process, resulting in a significant waste of water resources. Summary of the Invention

[0005] The purpose of this invention is to propose a regeneration control method that can effectively reduce the ion concentration of the regenerated residual water of the electrically driven desalination unit, which is beneficial to the next stage of purification treatment and avoids the phenomenon of high pure water concentration in the initial stage of purification treatment of the electrically driven desalination unit, thus overcoming the shortcomings of the prior art.

[0006] Another object of the present invention is to provide a household water purification device and a computer-readable storage medium using the above-described regeneration control method, which aims to improve the regeneration effect of the electrically driven desalination component.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A regeneration control method is applicable to a household water purification device, the household water purification device including at least one electrically driven desalination component and a power supply component, wherein the electrically driven desalination component adsorbs salts in the flowing water when forward energized and releases the adsorbed salts into the flowing water when reverse energized, and the power supply component is used to energize the electrically driven desalination component in both the forward and reverse directions.

[0009] The regeneration control method includes the following steps:

[0010] The flow rate of the water flowing through the electrically driven desalination component is made to reach a first threshold, and the electrically driven desalination component is reverse-energized through the power supply component, and the power supply parameters of the power supply component are acquired in real time.

[0011] When the power supply parameters reach the first target value, the flow rate of the water flowing through the electrically driven desalination component is made to reach the second threshold, and the electrically driven desalination component is positively energized through the power supply component; wherein, the first threshold is greater than the second threshold, and the power supply parameters include any one or more combinations of power supply current, power supply quantity and power supply time.

[0012] Preferably, the following steps are also included:

[0013] When the power supply parameter reaches the second target value, the flow rate of the water flowing through the electrically driven desalination component is made to reach the third threshold, and the third threshold is greater than the second threshold, or the flow rate of the water flowing through the electrically driven desalination component is made to reach 0 m / s, and the power supply component stops supplying power to the electrically driven desalination component.

[0014] Preferably, the third threshold is greater than the first threshold.

[0015] Preferably, the second threshold is 0 m / s.

[0016] Preferably, the household water purification device is provided with multiple electrically driven desalination components and multiple power supply components, and the multiple electrically driven desalination components are connected in parallel with each other. One of the power supply components is used to provide forward and reverse power to one of the electrically driven desalination components.

[0017] The regeneration control method includes the following steps:

[0018] The flow rate of water flowing through at least one electrically driven desalination component is made to reach a first threshold. The electrically driven desalination component is reverse-energized through the corresponding power supply component, and the remaining electrically driven desalination components are forward-energized through the corresponding power supply component. At least one electrically driven desalination component that is forward-energized allocates a portion of the produced water as regeneration feed water to the electrically driven desalination component that is reverse-energized. The power supply parameters of the corresponding power supply component used to reverse-energize the electrically driven desalination component are acquired in real time.

[0019] When all the power supply parameters of the power supply components used to reverse-energize the electrically driven desalination component reach the first target value, the flow rate of the water flowing through the electrically driven desalination component undergoing reverse-energization reaches the second threshold, and the electrically driven desalination component undergoing reverse-energization is forward-energized through the corresponding power supply components.

[0020] Preferably, the following steps are also included:

[0021] When all the power supply parameters of the power supply components used to forward power the electrically driven desalination components reach the second target value, the flow velocity of the water flowing through the electrically driven desalination components reaches the third threshold, or the flow velocity of the water flowing through the electrically driven desalination components reaches 0 m / s, and the power supply components stop powering all the electrically driven desalination components.

[0022] A household water purification device includes at least one electrically driven desalination component, a power supply component, a processor, a memory, and a computer program stored in the memory and executable by the processor;

[0023] The electrically driven desalination component is electrically connected to the power supply component, and the power supply component is used to provide forward and reverse power to the electrically driven desalination component. When the computer program is executed by the processor, it implements the steps of the regeneration control method described above.

[0024] Preferably, it also includes a piping system and a pure water valve;

[0025] The electric drive desalination components are provided in multiple ways, and the multiple electric drive desalination components are connected in parallel with each other. Each of the multiple electric drive desalination components includes a first interface and a second interface. The power supply components are provided in multiple ways, and one of the power supply components is used to provide forward and reverse power to one of the electric drive desalination components.

[0026] The pipeline system includes a first pipeline, a second pipeline, a third pipeline, and a pure water pipeline. A first interface of an electrically driven desalination component is connected to both the first pipeline and the third pipeline, and a second interface of the electrically driven desalination component is connected to the second pipeline. The pure water pipeline is connected to multiple parallel second pipelines, and a second pipeline is located between the electrically driven desalination component and the pure water pipeline. The pure water pipeline is equipped with a pure water valve, which is used to open or close the pure water pipeline.

[0027] Preferably, it also includes a speed regulating valve, which is provided on both the first pipeline and the third pipeline, and is used to regulate the water flow speed in the first pipeline and the third pipeline.

[0028] A computer-readable storage medium storing a computer program, wherein when executed by a processor, the computer program implements the steps of the regeneration control method described above.

[0029] The technical solutions provided in this application embodiment may include the following beneficial effects:

[0030] By adding a positive energizing process in the later stage of the regeneration process, instead of rinsing the inside of the electrically driven desalination component with pure water and / or raw water as in the existing technology, the ion concentration inside the electrically driven desalination component is reduced. This helps to avoid the phenomenon of excessively high pure water concentration in the early stage of purification, greatly avoids the waste of water resources, and improves the user experience. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the first embodiment of a household water purification device according to the present invention.

[0032] Figure 2 This is a schematic diagram of the water circuit in a household water purification device according to the present invention, when the household water purification device is only in water production mode.

[0033] Figure 3 This is a schematic diagram of the water circuit in one embodiment of a household water purification device of the present invention, when the household water purification device is simultaneously in water production and regeneration mode.

[0034] Figure 4 This is a schematic diagram of the water circuit in another embodiment of a household water purification device of the present invention, when the household water purification device is simultaneously in water production and regeneration mode.

[0035] Figure 5 This is a schematic diagram of the structure of a second embodiment of a household water purification device according to the present invention.

[0036] The system includes: pipeline system 1, inlet pipeline 101, first pipeline 11, pure water pipeline 102, second pipeline 12, wastewater pipeline 103, third pipeline 13, electric drive desalination component 2, first interface 21, second interface 22, pure water valve 3, speed control valve 4, conductivity detection component 5, temperature detection component 6, and heating component 7. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] This technical solution provides a regeneration control method applicable to household water purification devices. The household water purification device includes at least one electrically driven desalination component 2 and a power supply component. When the electrically driven desalination component 2 is energized in the forward direction, it adsorbs salts in the flowing water. When the electrically driven desalination component 2 is energized in the reverse direction, it releases the adsorbed salts into the flowing water. The power supply component is used to energize the electrically driven desalination component 2 in the forward and reverse directions.

[0039] The regeneration control method includes the following steps:

[0040] The flow rate of the water flowing through the electrically driven desalination component 2 is brought to a first threshold, and the electrically driven desalination component 2 is reverse-energized through the power supply component, and the power supply parameters of the power supply component are acquired in real time.

[0041] When the power supply parameters reach the first target value, the flow rate of the water flowing through the electrically driven desalination component 2 is made to reach the second threshold, and the electrically driven desalination component 2 is positively energized through the power supply component; wherein, the first threshold is greater than the second threshold, and the power supply parameters include any one or more combinations of power supply current, power supply quantity and power supply time.

[0042] In existing technologies, water can be treated using electrically driven desalination components to improve water quality. During operation, ions within the electrically driven desalination component exchange with ions in the water, purifying the water. After a period of use, the component needs regeneration. Currently, tap water is typically used for regeneration, and regeneration ends when a set duration is reached. However, water quality varies from region to region, resulting in different ion adsorption rates for the same amount of time under different water conditions. Controlling the regeneration process solely by the duration of regeneration cannot guarantee the regeneration effectiveness of the component.

[0043] Furthermore, existing electrically driven desalination units have a high ion concentration in the water within their flow channels after regeneration. Generally, they require rinsing with pure water and / or raw water to reduce this concentration. Since the volume of water inside the electrically driven desalination unit after regeneration is large, the amount of pure water and / or raw water used for this second rinsing accounts for more than 30% of the total water consumption in the entire rinsing and regeneration process, resulting in a significant waste of water resources.

[0044] Therefore, in order to reduce the ion concentration of the regenerated residual water of the electrically driven desalination component 2, which is beneficial to the next stage of purification treatment and to avoid the phenomenon of high pure water concentration in the early stage of purification treatment, this technical solution proposes a regeneration control method suitable for household water purification devices, including at least one electrically driven desalination component 2 and a power supply component. The electrically driven desalination component 2 adsorbs salts in the flowing water when forward energized and releases the adsorbed salts into the flowing water when reverse energized. For example, it can be an electrically driven desalination filter cartridge. The power supply component is used to energize the electrically driven desalination component 2 in both the forward and reverse directions to achieve the adsorption and desorption of salts in the flowing water by the electrically driven desalination component 2.

[0045] Specifically, the regeneration control method in this scheme includes the following steps:

[0046] The flow rate of water flowing through the electrically driven desalination component 2 is adjusted to reach a first threshold, i.e., the regeneration flow rate (i.e., the first threshold) preset by the household water purifier or set by the user according to actual conditions. Then, the electrically driven desalination component 2 is reverse-energized through the power supply component to cause it to release salts and enter the early stage of the regeneration process. The power supply parameters of the power supply component are acquired in real time. It should be noted that the power supply parameters include any one or more combinations of power supply current, power supply quantity, and power supply time.

[0047] During the early stages of the regeneration process, the electrically driven desalination component 2 continuously releases salts into the flowing water, thus increasing the ion concentration inside it. When the power supply parameter reaches the first target value, it indicates that the salts adsorbed by the component during the purification process have been released to a certain extent, completing the early stage of the regeneration process. Furthermore, when the power supply parameter reaches the first target value, the control method of this scheme causes the flow rate of the water flowing through the electrically driven desalination component 2 to reach a second threshold, where the first threshold is greater than the second threshold. That is, when the electrically driven desalination component 2 completes the early stage of the regeneration process, the control method rapidly reduces the flow rate of the water flowing through it and positively energizes it through the power supply component. In the later stages of the regeneration process, it positively adsorbs the residual regeneration water inside the component 2, thereby reducing its ion concentration and preventing excessively high pure water concentration in the initial purification stage, which is beneficial for the subsequent purification process.

[0048] This technical solution adds a positive energizing process in the later stage of the regeneration process, replacing the existing technology of rinsing the inside of the electrically driven desalination component 2 with pure water and / or raw water. This reduces the ion concentration inside the electrically driven desalination component 2, which helps to prevent the phenomenon of excessively high pure water concentration in the early stage of purification treatment, greatly avoids the waste of water resources, and improves the user experience.

[0049] It should be noted that the first threshold and second threshold of water flow velocity and the first target value of power supply parameters in this solution can be set by the manufacturer during the product manufacturing stage, or by the user according to actual needs during the product use stage.

[0050] Preferably, the electrically driven desalination assembly 2 includes a physical adsorption desalination filter element and / or a chemical adsorption desalination filter element; the physical adsorption desalination filter element includes either a capacitor desalination filter element or a membrane capacitor desalination filter element; the chemical adsorption desalination filter element is a bipolar membrane electrodeionization filter element.

[0051] It should be noted that the electrically driven desalination component in this solution includes a physical adsorption desalination filter element and / or a chemical adsorption desalination filter element; wherein, the physical adsorption desalination filter element may include either a capacitive deionization (CDI) filter element or a membrane capacitive deionization (MCDI) filter element; the chemical adsorption desalination filter element may be a bipolar (BP) electro-deionization filter element.

[0052] More preferably, the electrically driven desalination component of this solution is a bipolar membrane electro-deionization filter cartridge. The working principle of the bipolar membrane electro-deionization filter cartridge is as follows: the bipolar membrane in the bipolar membrane electro-deionization filter cartridge includes a cation exchange membrane and an anion exchange membrane that are bonded together. When a positive voltage is applied to the bipolar membrane electro-deionization filter cartridge, anions in the raw water to be purified, such as chloride ions, move towards the anion exchange membrane and replace OH- ions in the anion exchange membrane. OH- ions enter the flow channel between two adjacent bipolar membranes, that is, the flow channel between the cation exchange membrane of one bipolar membrane and the anion exchange membrane of another bipolar membrane. Simultaneously, cations in the raw water, such as Na+, move towards the cation exchange membrane and replace H+ ions in the cation exchange membrane. H+ ions enter the flow channel. H+ ions and OH- ions undergo a neutralization reaction in the flow channel to generate water, thereby achieving the removal of salt from the raw water. The purified water flows out from the end of the flow channel. When a reverse voltage is applied to the bipolar membrane electro-deionization filter cartridge, OH- and H+ ions are generated on the surfaces of the cation exchange membrane and anion exchange membrane under the influence of the electric field. Cations such as Na+ inside the cation exchange membrane are replaced by H+ ions and move towards the anion exchange membrane. Anions such as chloride ions in the anion exchange membrane are replaced by OH- and move towards the cation exchange membrane. Cations such as Na+ and anions such as chloride ions enter the flow channel and can be washed out by the water flowing through the bipolar membrane electro-deionization filter cartridge. Thus, the bipolar membrane electro-deionization filter cartridge can release the Na+ and other cations and chloride ions adsorbed on the bipolar membrane when the power is off or a reverse voltage is applied, so that the salt substances in the filter cartridge can be washed out by water, achieving regeneration. The water carrying Na+ and other cations and chloride ions can be called wastewater, that is, concentrated water with a high ion concentration.

[0053] Specifically, capacitive desalination filter cartridges, membrane capacitive desalination filter cartridges, and bipolar membrane electro-deionization filter cartridges can all induce the directional migration of cations and anions when electricity is applied, thereby achieving water purification. These types of filter cartridges can be called electrically driven desalination filter cartridges.

[0054] To further explain, it also includes the following steps:

[0055] When the power supply parameter reaches the second target value, the flow rate of the water flowing through the electrically driven desalination component 2 is made to reach the third threshold, and the third threshold is greater than the second threshold, or the flow rate of the water flowing through the electrically driven desalination component 2 is made to reach 0 m / s, and the power supply component stops supplying power to the electrically driven desalination component 2.

[0056] In a preferred embodiment of this technical solution, the regeneration control method further includes the following steps: when the power supply parameter reaches the second target value, it indicates that the electrically driven desalination component 2 has adsorbed a certain amount of salt substances in the later stage of the regeneration process, reducing the ion concentration of the regenerated residual water inside the electrically driven desalination component 2 to a certain concentration, thus completing the later stage of the regeneration process. At this time, the regeneration control method can make the flow rate of the water flowing through the electrically driven desalination component 2 reach the third threshold. That is, when the electrically driven desalination component 2 completes the later stage of the regeneration process, the control method makes the flow rate of the water flowing through the electrically driven desalination component 2 rise rapidly. Since the power supply component is still providing positive power to the electrically driven desalination component 2 at this time, when the water flow rate rises, the household water purifier directly enters the next stage of purification process. Alternatively, the control method can also make the flow rate of the water flowing through the electrically driven desalination component 2 reach 0 m / s and stop the power supply component from providing power to the electrically driven desalination component 2, so that the household water purifier enters standby mode and saves energy.

[0057] It should be noted that the purification process or standby state after the regeneration process is completed can be set by the user according to the actual needs.

[0058] To further clarify, the third threshold is greater than the first threshold.

[0059] In one embodiment of this technical solution, since a positive adsorption process is added in the later stage of the regeneration process, this solution can further optimize the water production flow rate entering the next stage of purification process to be greater than the regeneration flow rate in the early stage of the regeneration process. Under the premise of preventing the electric drive desalination component 2 from having a high pure water concentration in the early stage of purification, the water production efficiency of the next stage of purification process is improved, so as to further improve the user experience.

[0060] To elaborate further, the second threshold is 0 m / s.

[0061] In a preferred embodiment of this technical solution, after the early stage of the regeneration process is completed, the later stage of the regeneration process is entered under the premise that there is no water flow inside the electrically driven desalination component 2. This is more conducive to the migration and adsorption of water ions to the electrically driven desalination component 2 in the later stage of the regeneration process, so as to more effectively reduce the ion concentration of the regenerated residual water inside the electrically driven desalination component 2.

[0062] To further explain, the household water purification device is equipped with multiple electrically driven desalination components 2 and multiple power supply components, and the multiple electrically driven desalination components 2 are connected in parallel with each other. One of the power supply components is used to provide forward and reverse power to one of the electrically driven desalination components 2.

[0063] The regeneration control method includes the following steps:

[0064] The flow rate of water flowing through at least one electrically driven desalination component 2 is made to reach a first threshold. The electrically driven desalination component 2 is reverse-energized through the corresponding power supply component, and the other remaining electrically driven desalination components 2 are forward-energized through the corresponding power supply component. At least one electrically driven desalination component 2 that is forward-energized allocates a portion of the produced water as regeneration feed water to the electrically driven desalination component 2 that is reverse-energized. The power supply parameters of the corresponding power supply component used to reverse-energize the electrically driven desalination component 2 are acquired in real time.

[0065] When all the power supply parameters of the power supply components used to reverse-energize the electrically driven desalination component 2 reach the first target value, the flow rate of the water flowing through the electrically driven desalination component 2 undergoing reverse energization reaches the second threshold, and the electrically driven desalination component 2 undergoing reverse energization is forward-energized through the corresponding power supply components.

[0066] In some embodiments, this technical solution further refines the regeneration control method for household water purifiers using multiple filter cartridges, and adds multiple power supply components for individually powering the electrically driven desalination component 2 in the household water purifier, so as to obtain the power supply parameters of different electrically driven desalination components 2 more clearly and conveniently. Specifically, the regeneration control method of this solution includes the following steps:

[0067] When at least one of the electrically driven desalination components 2 enters the early stage of the regeneration process, the control method of this scheme can allocate a portion of the produced water as regeneration feed water to the electrically driven desalination component 2 that is reverse-energized while other remaining electrically driven desalination components 2 that are energized in the forward direction, so as to achieve mutual regeneration of multiple filter cartridges. It should be noted that in the early stage of the regeneration process of the household water purification device of this scheme, one electrically driven desalination component 2 can regenerate multiple electrically driven desalination components 2, or multiple electrically driven desalination components 2 can regenerate one electrically driven desalination component 2, or multiple electrically driven desalination components 2 can regenerate multiple electrically driven desalination components 2. The specific implementation method depends on the actual situation.

[0068] Furthermore, in this scheme, the end mark of the early stage of the regeneration process of at least one electrically driven desalination component 2 is preferably that the power supply parameters of the power supply component used to reverse power the electrically driven desalination component 2 all reach the first target value, that is, all the salt substances adsorbed by the electrically driven desalination components 2 in the purification treatment stage have been released to a certain extent, which helps to ensure the regeneration effect of the household water purifier.

[0069] To further explain, it also includes the following steps:

[0070] When all the power supply parameters of the power supply components used to forward power the electrically driven desalination component 2 reach the second target value, the flow rate of the water flowing through the electrically driven desalination component 2 reaches the third threshold, or the flow rate of the water flowing through the electrically driven desalination component 2 reaches 0 m / s, and the power supply components stop powering all the electrically driven desalination components 2.

[0071] Furthermore, in this scheme, the end mark of the later stage of the regeneration process of at least one electrically driven desalination component 2 is preferably that the power supply parameters of all power supply components used to positively energize the electrically driven desalination component 2 reach the second target value, that is, all electrically driven desalination components 2 undergoing the regeneration process have adsorbed a certain amount of salt substances in the later stage of the regeneration process, so that the ion concentration of the regeneration residual water inside the electrically driven desalination component 2 has been reduced to a certain concentration, thereby further ensuring the regeneration effect of the household water purification device.

[0072] A household water purification device includes at least one electrically driven desalination component 2, a power supply component, a processor, a memory, and a computer program stored in the memory and executable by the processor;

[0073] The electrically driven desalination component 2 is electrically connected to the power supply component. The power supply component is used to provide forward and reverse power to the electrically driven desalination component 2. When the computer program is executed by the processor, it implements the steps of the regeneration control method described above.

[0074] This technical solution also proposes a household water purification device that can be used to implement the steps of the above-mentioned regeneration control method. The household water purification device includes at least one electrically driven desalination component 2, a power supply component, a processor (not shown in the figure), a memory (not shown in the figure), and a computer program stored in the memory and executable by the processor. The electrically driven desalination component 2 is electrically connected to the power supply component, which is used to provide forward and reverse power to the electrically driven desalination component 2. The memory may include a non-volatile storage medium and internal memory.

[0075] Non-volatile storage media can store computer programs. These computer programs include program instructions that, when executed, cause the processor to perform any regenerative control method.

[0076] The processor provides computing and control capabilities to support the operation of the entire home water purification system.

[0077] The memory provides an environment for the execution of computer programs stored in non-volatile storage media. When the computer program is executed by the processor, it enables the processor to perform any regeneration control method.

[0078] It should be noted that the memory can be a Flash chip, a read-only memory (ROM), a hard disk, an optical disk, a USB flash drive, or a portable hard drive, etc., and the processor can be a central processing unit (CPU), which can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0079] To elaborate further, it also includes piping system 1 and pure water valve 3;

[0080] Multiple electrically driven desalination components 2 are provided, and the multiple electrically driven desalination components 2 are connected in parallel with each other. Each of the multiple electrically driven desalination components 2 includes a first interface 21 and a second interface 22. Multiple power supply components are provided, and one power supply component is used to provide forward and reverse power to one of the electrically driven desalination components 2.

[0081] The pipeline system 1 includes a first pipeline 11, a second pipeline 12, a third pipeline 13, and a pure water pipeline 102. A first interface 21 of an electrically driven desalination component 2 is connected to a first pipeline 11 and a third pipeline 13, and a second interface 22 of an electrically driven desalination component 2 is connected to a second pipeline 12. The pure water pipeline 102 is connected to multiple parallel second pipelines 12, and a second pipeline 12 is located between an electrically driven desalination component 2 and the pure water pipeline 102. The pure water pipeline 102 is provided with a pure water valve 3, which is used to open or close the pure water pipeline 102.

[0082] In some embodiments, this solution also preferably provides a household water purification device using the above-described regeneration control method, such as... Figure 1 As shown, it also includes piping system 1 and pure water valve 3.

[0083] First, the pipeline system 1 is the water network in the household water purification device, which can connect external structures other than the household water purification device (such as raw water source, pure water outlet and wastewater outlet, etc.) to the electrically driven desalination component 2, thereby realizing the water purification and regeneration of the electrically driven desalination component 2.

[0084] Secondly, the electrically driven desalination component 2 in this solution includes a first interface 21 and a second interface 22. When purifying the flowing water, it only uses one inlet (i.e., the first interface 21) and one outlet (i.e., the second interface 22). When rinsing and regenerating, it also only uses one inlet (i.e., the second interface 22) and one outlet (i.e., the first interface 21). Therefore, it can also be called a single-channel electrically driven desalination component.

[0085] Furthermore, when a positive voltage is applied to the electrically driven desalination component 2, it purifies the water flowing into the first interface 21, and the purified water flows out through the second interface 22. No wastewater is generated during this process, improving water utilization. Moreover, the household water purifier of this solution can purify water simultaneously using multiple parallel electrically driven desalination components 2, which helps increase the pure water production of the household water purifier. When the power to the electrically driven desalination component 2 is cut off or a reverse voltage is applied, it enters the flushing and regeneration stage. The salts in the electrically driven desalination component 2 are flushed by the water flowing into the second interface 22, and the resulting wastewater (i.e., concentrated water with a high ion concentration) flows out through the first interface 21.

[0086] Specifically, the pipeline system 1 in this scheme includes multiple parallel first pipelines 11, second pipelines 12, and third pipelines 13. A first interface 21 of an electrically driven desalination component 2 is connected to both a first pipeline 11 and a third pipeline 13, and a second interface 22 of the electrically driven desalination component 2 is connected to a second pipeline 12. One end of the first pipeline 11 is connected to the first interface 21 of the electrically driven desalination component 2 for supplying water to the first interface 21, and its other end can be connected to a raw water source. One end of the second pipeline 12 is connected to the second interface 22 of the electrically driven desalination component 2 for outputting pure water purified by the electrically driven desalination component 2, and also for supplying water to the second interface 22 during the rinsing and regeneration stage of the electrically driven desalination component 2. Therefore, its other end can be connected to the pure water pipeline 102 of the pipeline system 1, and simultaneously connected to the second pipeline 12 of any electrically driven desalination component 2 connected in parallel with the first pipeline 11. One end of the third pipeline 13 is connected to the first interface 21 of the electrically driven desalination component 2, and is used to output the wastewater generated by the electrically driven desalination component 2 during the rinsing and regeneration stage.

[0087] It should be noted that when one end of the second pipeline 12 is connected to the second interface 22 of an electrically driven desalination component 2, and the other end is connected to the second pipeline 12 of any electrically driven desalination component 2 connected in parallel with the electrically driven desalination component 2, that is, when the pure water after purification treatment of one electrically driven desalination component 2 is used as the rinsing and regeneration water of another electrically driven desalination component 2, for ease of description, the electrically driven desalination component 2 that performs water purification treatment is referred to as the first electrically driven desalination component, and the electrically driven desalination component 2 that performs rinsing and regeneration is referred to as the second electrically driven desalination component. When a positive voltage is applied to the first electrically driven desalination component and the second electrically driven desalination component is de-energized or a reverse voltage is applied, the first electrically driven desalination component purifies the incoming water. The purified water flows into the second electrically driven desalination component through the second interface 22 of the first electrically driven desalination component and the second interface 22 of the second electrically driven desalination component connected in parallel. The salts in the second electrically driven desalination component are rinsed by the purified water obtained after purification by the first electrically driven desalination component and output to the third pipeline 13, thereby realizing the regeneration of the second electrically driven desalination component.

[0088] When the household water purifier is only in water production mode, multiple parallel electrically driven desalination components 2 perform purification treatment simultaneously, and the pure water obtained after purification by the multiple electrically driven desalination components 2 simultaneously enters the pure water pipeline 102. When the household water purifier is simultaneously in water production and regeneration mode, in one embodiment, the multiple parallel electrically driven desalination components 2 do not perform flushing and regeneration simultaneously. The pure water produced by purification treatment by at least one of the electrically driven desalination components 2 enters the pure water pipeline 102 outlet, and the other part is diverted to at least one of the electrically driven desalination components 2 for flushing and regeneration. When one of the electrically driven desalination components 2 is completely regenerated, the water flow direction in the pipeline system is reversed, and the other electrically driven desalination components 2 in the household water purifier are flushed and regenerated in sequence. In another embodiment, multiple parallel electrically driven desalination components 2 are not flushed and regenerated simultaneously. The purification process is carried out by at least one electrically driven desalination component 2, and all the pure water produced enters at least one electrically driven desalination component 2 for flushing and regeneration. When one of the electrically driven desalination components 2 is fully regenerated, the water flow direction in the pipeline system is reversed, and the other electrically driven desalination components 2 in the household water purifier are flushed and regenerated in sequence.

[0089] For example, the total power of the electrically driven desalination component 2 of a household water purifier for regeneration is controlled within 2000W, preferably within 200 to 1000W.

[0090] Furthermore, the pure water pipeline 102 of the household water purifier is also equipped with a pure water valve 3 for opening and closing the pure water pipeline 102, which helps to more effectively control the water flow direction of the pipeline system in the household water purifier, so as to realize the water production and regeneration of the household water purifier.

[0091] For example, consider two parallel electrically driven desalination components 2:

[0092] When the household water purifier is only in water production mode, both electrically driven desalination components 2 are in the purification stage. Raw water simultaneously enters the corresponding electrically driven desalination component 2 through two parallel first pipes 11. The electrically driven desalination component 2, with a positive voltage applied, purifies the raw water. At this time, the pure water valve 3 opens, and the purified water first passes through the corresponding second pipe 12, then enters the pure water pipe 102 for outlet. Figure 2 As shown.

[0093] When a household water purifier is simultaneously in water production and regeneration mode, one electrically driven desalination component 2 is in the purification stage, and the other electrically driven desalination component 2 is in the flushing and regeneration stage. Raw water enters the corresponding electrically driven desalination component 2 through a first pipe 11. The electrically driven desalination component 2, with a positive voltage applied, purifies the raw water. At this time, the pure water valve 3 opens, and part of the purified water enters the pure water pipe 102 for outlet, while the other part is diverted to the other electrically driven desalination component 2. The other electrically driven desalination component 2, with a reverse voltage applied, uses this portion of pure water for flushing and regeneration. The wastewater after flushing and regeneration then enters the third pipe 13 through the first interface 21 of the electrically driven desalination component 2 in the flushing and regeneration stage for discharge. Figure 3 As shown, after the electric drive desalination component 2 is fully regenerated, the water flow direction in the pipeline system is reversed to flush and regenerate the electric drive desalination component 2, which was originally in the purification stage.

[0094] Alternatively, one electrically driven desalination component 2 may be in the purification stage, while another electrically driven desalination component 2 is in the flushing and regeneration stage. Raw water enters the corresponding electrically driven desalination component 2 through a first pipeline 11. The electrically driven desalination component 2, with a positive voltage applied, purifies the raw water. At this time, the pure water valve 3 is closed, and the purified water enters the other electrically driven desalination component 2. The other electrically driven desalination component 2, with a reverse voltage applied, uses pure water for flushing and regeneration. The wastewater after flushing and regeneration then enters the third pipeline 13 through the first interface 21 of the electrically driven desalination component 2 in the flushing and regeneration stage for discharge. Figure 4 As shown, after the electric drive desalination component 2 is fully regenerated, the water flow direction in the pipeline system is reversed to flush and regenerate the electric drive desalination component 2, which was originally in the purification stage.

[0095] For example, in this solution, a power supply component is electrically connected to an electrically driven desalination component 2 to supply power to the electrically driven desalination component 2, thereby applying forward and reverse voltages.

[0096] In some implementations, the voltage supplied by the power supply component to the electrically driven desalination component is adjustable, and the desalination rate of the electrically driven desalination component changes accordingly when the voltage supplied by the power supply component is adjusted.

[0097] For example, the operating voltage of the electrically driven desalination component can be set to be adapted to the water quality of the region where the household water purifier is used, so that the water purified by the electrically driven desalination component can meet the requirements. For instance, when the tap water supply is hard, the power supply voltage of the power supply component can be set higher; when the tap water supply is soft, the power supply voltage of the power supply component can be set lower.

[0098] For example, after the electrically driven desalination component 2 has been purified for a certain period of time, it has adsorbed a large amount of salt substances, and the electrically driven desalination component 2 needs to be rinsed and regenerated.

[0099] In some embodiments, the salts in the electrically driven desalination assembly 2 can be flushed by water flowing from the second interface 22 of the electrically driven desalination assembly 2 to the third pipeline 13 connected to the electrically driven desalination assembly 2 by de-energizing or applying a reverse voltage.

[0100] In some other embodiments, the electrically driven desalination assembly 2 is detachably housed inside the household water purifier, so that the electrically driven desalination assembly 2 can be removed from the household water purifier for rinsing when needed, thereby regenerating the filter element of the electrically driven desalination assembly 2.

[0101] Preferably, at least two electrically driven desalination components 2 are provided.

[0102] In one embodiment of this technical solution, at least two electrically driven desalination components 2 are provided, which can reduce the production cost of household water purification devices while meeting the requirement of continuous water production, thereby better meeting the user experience.

[0103] Furthermore, it also includes a speed regulating valve 4, which is provided on both the first pipeline 11 and the third pipeline 13. The speed regulating valve 4 is used to adjust the water flow speed of the first pipeline 11 and the third pipeline 13.

[0104] In some embodiments, both the first pipe 11 and the third pipe 13 of this solution are equipped with speed regulating valves 4 for adjusting the water flow rate, such as... Figure 5As shown, this allows for the activation of the purification and rinsing / regeneration stages of the single-channel desalination component 2 according to actual conditions, and also enables the adjustment of the water flow rate in the early and late stages of the regeneration process in the household water purifier according to actual conditions.

[0105] Preferably, the pure water pipeline 102 is further provided with a conductivity detection component 5, and the conductivity detection component 5 is located near the inlet of the pure water valve 3; the second pipeline 12 is provided with a temperature detection component 6 and a heating component 7, and the heating component 7 is located between the temperature detection component 6 and the pure water pipeline 102.

[0106] In one embodiment of this technical solution, the household water purification device further includes a conductivity detection component 5, a temperature detection component 6, and a heating component 7, such as... Figure 5 As shown.

[0107] In some embodiments, this solution also includes a conductivity detection component 5 on the pure water pipeline 102, positioned near the inlet of the pure water valve 3. The conductivity detection component 5 can detect the quality of the pure water obtained after purification by the electrically driven desalination component 2. In this solution, the conductivity detection component 5 is preferably a TDS meter. TDS value is a water quality indicator specifically designed for pure water, representing the total soluble solids content in the water. TDS value can reflect water quality to a certain extent; generally, the lower the TDS value, the fewer soluble salts such as heavy metal ions in the water, and the purer the water. This solution can effectively monitor the pure water quality in household water purifiers through the conductivity detection component 5, allowing users to decide whether to start the flushing and regeneration process of the electrically driven desalination component 2 based on the monitoring results.

[0108] In some embodiments, this solution includes a temperature detection component 6 on the second pipeline 12. The temperature detection component 6 is used to detect the temperature of the pure water obtained after purification by the corresponding electrically driven desalination component 2, allowing the user to decide whether to heat or cool the pure water before use. As a preferred embodiment, a heating component 7 for heating the pure water is also provided on the second pipeline 12, located between the temperature detection component 6 and the pure water pipeline 102. This facilitates providing the user with hot water at the required temperature. Furthermore, if part or all of the pure water output from the second pipeline 12 is used for rinsing and regenerating the electrically driven desalination component 2 located in another second pipeline 12, the higher temperature water entering the electrically driven desalination component 2 can more quickly and thoroughly rinse away the salts adsorbed by the component, thereby improving regeneration efficiency.

[0109] Preferably, the pipeline system 1 further includes an inlet pipeline 101 and a wastewater pipeline 103;

[0110] The water inlet pipe 101 is connected to multiple parallel first pipes 11, and one first pipe 11 is located between the water inlet pipe 101 and one electrically driven desalination assembly 2.

[0111] The wastewater pipeline 103 is connected to multiple parallel third pipelines 13, and one of the third pipelines 13 is located between the wastewater pipeline 103 and an electrically driven desalination assembly 2.

[0112] In a preferred embodiment of this technical solution, the pipeline system 1 further includes an inlet pipeline 101 for unifying the first pipeline 11 and a wastewater pipeline 103 for unifying the third pipeline 13, so as to facilitate unified management of the inlet water source and the outlet wastewater.

[0113] In some embodiments, the water inlet pipe 101 and / or the pure water pipe 102 are further provided with a filter assembly (not shown in the figure).

[0114] For example, the filtration assembly may include a physical retention filter element and / or a physical adsorption filter element. The physical retention filter element includes at least one of a microfiltration membrane, an ultrafiltration membrane, and a PP cotton filter element, with a filtration accuracy between 10 nanometers and 5 micrometers, preferably between 10 nanometers and 1 micrometer. The physical adsorption filter element includes any one of activated carbon particles and activated carbon rods, with a COD removal rate of over 20%, preferably over 50%, in the water. The filtration assembly on the inlet pipe 101 can perform certain purification treatment on the water entering the electrically driven desalination assembly 2, such as removing particulate impurities and residual chlorine that may be present in the water, reducing the workload and consumption of the electrically driven desalination assembly 2, and extending its regeneration cycle and service life. The filtration assembly 2 on the pure water pipe 102 can further improve the quality of the pure water output from the household water purifier.

[0115] For example, the water inlet pipe 101 is also provided with a preheating component (not shown in the figure). The preheating component heats the raw water entering the electrically driven desalination component 2 for purification. After the water is preheated, the ion migration rate increases, and the purification efficiency is effectively improved when the water enters the electrically driven desalination component 2 for purification.

[0116] A computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, it implements the steps of the above-described regeneration control method.

[0117] An embodiment of this technical solution also provides a computer-readable storage medium storing a computer program. The computer program includes program instructions, and the method implemented when the program instructions are executed can be referred to in various embodiments of the regeneration control method in this solution.

[0118] The computer-readable storage medium can be an internal storage unit of the household water purifier described in the foregoing embodiments, such as the hard drive or memory of the household water purifier. Alternatively, the computer-readable storage medium can be an external storage device of the household water purifier, such as a plug-in hard drive, smart media card (SMC), secure digital card (SD), flash card, etc., equipped on the household water purifier.

[0119] Since the computer program stored in the computer-readable storage medium can execute any of the regeneration control methods provided in the embodiments of this application, the beneficial effects that any of the regeneration control methods provided in the embodiments of this application can achieve can be realized, as detailed in the preceding embodiments, and will not be repeated here.

[0120] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0121] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0122] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0123] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0124] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0125] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0126] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A regeneration control method, characterized in that, This invention is applicable to household water purification devices. The household water purification device includes at least one electrically driven desalination component and a power supply component. When the electrically driven desalination component is energized in the forward direction, it adsorbs salts in the flowing water. When the electrically driven desalination component is energized in the reverse direction, it releases the adsorbed salts into the flowing water. The power supply component is used to energize the electrically driven desalination component in both the forward and reverse directions. The regeneration control method includes the following steps: The flow rate of the water flowing through the electrically driven desalination component is made to reach a first threshold, and the electrically driven desalination component is reverse-energized through the power supply component, and the power supply parameters of the power supply component are acquired in real time. When the power supply parameters reach the first target value, the flow rate of the water flowing through the electrically driven desalination component is made to reach the second threshold, and the electrically driven desalination component is positively energized through the power supply component; wherein, the first threshold is greater than the second threshold, and the power supply parameters include any one or more combinations of power supply current, power supply quantity and power supply time.

2. The regeneration control method according to claim 1, characterized in that, It also includes the following steps: When the power supply parameter reaches the second target value, the flow rate of the water flowing through the electrically driven desalination component is made to reach the third threshold, and the third threshold is greater than the second threshold, or the flow rate of the water flowing through the electrically driven desalination component is made to reach 0 m / s, and the power supply component stops supplying power to the electrically driven desalination component.

3. The regeneration control method according to claim 2, characterized in that, The third threshold is greater than the first threshold.

4. The regeneration control method according to claim 1, characterized in that, The second threshold is 0 m / s.

5. The regeneration control method according to claim 1, characterized in that, The household water purification device is equipped with multiple electrically driven desalination components and multiple power supply components, and the multiple electrically driven desalination components are connected in parallel. One of the power supply components is used to energize one of the electrically driven desalination components in the forward and reverse directions. The regeneration control method includes the following steps: The flow rate of water flowing through at least one electrically driven desalination component is made to reach a first threshold. The electrically driven desalination component is reverse-energized through the corresponding power supply component, and the remaining electrically driven desalination components are forward-energized through the corresponding power supply component. At least one electrically driven desalination component that is forward-energized allocates a portion of the produced water as regeneration feed water to the electrically driven desalination component that is reverse-energized. The power supply parameters of the corresponding power supply component used to reverse-energize the electrically driven desalination component are acquired in real time. When all the power supply parameters of the power supply components used to reverse-energize the electrically driven desalination component reach the first target value, the flow rate of the water flowing through the electrically driven desalination component undergoing reverse-energization reaches the second threshold, and the electrically driven desalination component undergoing reverse-energization is forward-energized through the corresponding power supply components.

6. The regeneration control method according to claim 5, characterized in that, It also includes the following steps: When all the power supply parameters of the power supply components used to forward power the electrically driven desalination components reach the second target value, the flow velocity of the water flowing through the electrically driven desalination components reaches the third threshold, or the flow velocity of the water flowing through the electrically driven desalination components reaches 0 m / s, and the power supply components stop powering all the electrically driven desalination components.

7. A household water purification device, characterized in that, It includes at least one electrically driven desalination component, a power supply component, a processor, a memory, and a computer program stored in the memory and executable by the processor; The electrically driven desalination component is electrically connected to the power supply component, and the power supply component is used to provide forward and reverse power to the electrically driven desalination component. When the computer program is executed by the processor, it implements the steps of the regeneration control method as described in any one of claims 1 to 6.

8. A household water purification device according to claim 7, characterized in that, It also includes the piping system and pure water valves; The electric drive desalination components are provided in multiple ways, and the multiple electric drive desalination components are connected in parallel with each other. Each of the multiple electric drive desalination components includes a first interface and a second interface. The power supply components are provided in multiple ways, and one of the power supply components is used to provide forward and reverse power to one of the electric drive desalination components. The pipeline system includes a first pipeline, a second pipeline, a third pipeline, and a pure water pipeline. A first interface of an electrically driven desalination component is connected to both the first pipeline and the third pipeline, and a second interface of the electrically driven desalination component is connected to the second pipeline. The pure water pipeline is connected to multiple parallel second pipelines, and a second pipeline is located between the electrically driven desalination component and the pure water pipeline. The pure water pipeline is equipped with a pure water valve, which is used to open or close the pure water pipeline.

9. A household water purification device according to claim 8, characterized in that, It also includes a speed control valve, which is provided on both the first pipeline and the third pipeline. The speed control valve is used to adjust the water flow speed in the first pipeline and the third pipeline.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, it implements the steps of the regeneration control method as described in any one of claims 1 to 6.

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