Multifunctional waterway system and water purifier

Abstract

This utility model discloses a multifunctional water system and a water purifier. The multifunctional water system includes a pipeline system and an electrodialysis unit and an RO unit connected in parallel within the pipeline system. The electrodialysis unit includes an electrodialysis filter cartridge with ion adsorption function, and the RO unit includes an RO filter cartridge. Raw water can be purified by the electrodialysis unit and / or the RO unit before being discharged. During the regeneration of the electrodialysis filter cartridge, the raw water can flow back through the electrodialysis unit. In the later stage of regeneration, the RO unit produces water and distributes a portion of the purified water back through the electrodialysis unit to rinse the electrodialysis filter cartridge. Users can select the electrodialysis unit and / or the RO unit to produce water according to their needs to obtain water with corresponding purification effects, thereby meeting various user needs. Furthermore, during the regeneration of the electrodialysis filter cartridge, the RO filter cartridge can still be used to produce water, ensuring an uninterrupted water supply to the user and guaranteeing the user's water consumption needs.

Description

Technical Field

[0001] This utility model relates to the field of water purification equipment technology, and in particular to a multifunctional water circuit system and a water purifier. Background Technology

[0002] A water purifier is a water treatment device that performs deep filtration and purification of water according to usage requirements. It achieves desalination and regeneration processes through electrodialysis filter cartridges. Traditional water purifiers use two filter cartridges that regenerate each other. When either filter cartridge is regenerating, all the water produced by the other cartridge is used to regenerate the cartridge that is currently undergoing regeneration. This means that the entire water purifier does not produce water when either filter cartridge is regenerating, significantly reducing the time users can use fresh water and causing inconvenience in daily use.

[0003] To address the aforementioned issues, existing technology discloses a continuous-flow bipolar membrane electro-assisted deionization system, comprising multiple electrodialysis units installed in a pipeline system. At least one electrodialysis unit simultaneously produces water and allocates a portion of the produced water as influent for regeneration to other electrodialysis units requiring regeneration. This allows for continuous water production during regeneration, improving user experience. However, this electrodialysis unit uses electrodialysis filter cartridges, which have limited water treatment efficiency and cannot meet the needs of scenarios requiring high water quality. Utility Model Content

[0004] To address the aforementioned deficiencies in the existing technology, the purpose of this utility model is to provide an electrodialysis water system and water purifier that can achieve different water quality purification effects to meet the diverse needs of users.

[0005] The first aspect of this utility model provides a multifunctional water system, including: a pipeline system and an electrodialysis unit and an RO unit arranged in parallel in the pipeline system. The electrodialysis unit includes an electrodialysis filter element with ion adsorption function, and the RO unit includes an RO filter element. Raw water can be treated by the electrodialysis unit and / or the RO unit and then discharged.

[0006] During the regeneration of the electrodialysis filter cartridge, the raw water can flow back through the electrodialysis unit. In the later stage of regeneration, the RO unit produces water and distributes a portion of the produced water back through the electrodialysis unit to rinse the electrodialysis filter cartridge.

[0007] In a preferred embodiment, in the first aspect of this utility model, the electrodialysis unit includes at least two electrodialysis filter cartridges arranged in parallel, and the raw water can be treated by any electrodialysis filter cartridge and / or RO unit before being discharged;

[0008] During the regeneration of at least one electrodialysis filter cartridge, the RO filter cartridge and / or other electrodialysis filter cartridges produce water for effluent, and in the later stage of regeneration, the RO unit produces water for effluent and distributes a portion of the produced water in reverse flow through the regenerated electrodialysis filter cartridge for rinsing.

[0009] In a preferred embodiment, in the first aspect of this utility model, at least two electrodialysis filter cartridges are set in a gradient with a water production difference A. Based on the electrodialysis filter cartridge with the lowest water production, the water production difference A is calculated as a percentage of 20% to 50%.

[0010] As a preferred embodiment, in the first aspect of this utility model, under the water production operation of the electrodialysis unit, when the difference in water production is less than A, the raw water flows through the electrodialysis filter cartridge with a lower water production capacity and is then discharged.

[0011] In a preferred embodiment, in the first aspect of this invention, at least two electrodialysis filter cartridges are stacked.

[0012] In a preferred embodiment, in the first aspect of this utility model, raw water flows forward through the raw water pipeline through the electrodialysis unit and / or RO unit to produce water, and then exits through the outlet pipeline. During regeneration, the raw water flows backward through the regeneration pipeline through the electrodialysis unit and then exits through the wastewater pipeline. In the later stage of regeneration, the RO unit is reverse-connected to the electrodialysis unit through its connected outlet pipeline for rinsing.

[0013] As a preferred embodiment, in the first aspect of this utility model, the raw water pipeline is equipped with a raw water valve, the outlet water pipeline is equipped with an outlet water valve, the regeneration pipeline is equipped with a regeneration valve, and the wastewater pipeline is equipped with a wastewater valve. The raw water valve, outlet water valve, regeneration valve, and wastewater valve all include at least one of a straight-through valve, a three-way valve, and a four-way valve.

[0014] As a preferred embodiment, in the first aspect of this utility model, flow meters are provided on both the raw water pipe and the outlet pipe corresponding to the electrodialysis unit, and TDS testers are provided on the raw water pipe, the outlet pipe and the wastewater pipe.

[0015] In one preferred embodiment, in the first aspect of this utility model, a pre-filter is provided on the raw water pipeline.

[0016] The second aspect of this utility model provides a water purifier, including: the above-mentioned multifunctional water circuit system.

[0017] The multifunctional water system and water purifier provided by this utility model have the following technical effects:

[0018] The water system includes parallel-connected electrodialysis and RO units. Users can select either the electrodialysis unit or the RO unit to produce water, achieving the desired purification effect and meeting diverse user needs. Furthermore, during electrodialysis filter regeneration, the RO filter can still be used to produce water, ensuring an uninterrupted water supply and meeting users' water consumption requirements. Simultaneously, electrodialysis filter regeneration is achieved by reverse-flowing raw water through the filter, using reverse current to complete ion desorption, followed by rinsing with a small amount of water produced by the RO unit. This not only regenerates the electrodialysis filter but also avoids excessive waste from the RO unit, thus reducing the water purifier's energy consumption. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the multifunctional water system of this utility model.

[0020] Figure label:

[0021] 1. RO filter cartridge; 2. Pre-filter cartridge; 3. Flow meter; 4. TDS meter; 5. Electrodialysis filter cartridge 1; 6. Electrodialysis filter cartridge 2; 7. Main raw water pipeline; 8. Raw water pipeline 1; 9. Raw water pipeline 2; 10. Raw water pipeline 3; 11. Four-way valve; 12. Three-way valve 1; 13. Wastewater pipeline 1; 14. Three-way valve 2; 15. Wastewater pipeline 2; 16. Regeneration pipeline 1; 17. Three-way valve 3; 18. Outlet pipeline 1; 19. Three-way valve 4; 20. Regeneration pipeline 2; 21. Three-way valve 5; 22. Outlet pipeline 2; 23. Outlet pipeline 3; 24. Three-way valve 6; 25. Branch pipeline; 26. Three-way valve 7; 27. Main outlet pipeline. Detailed Implementation

[0022] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0023] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0025] This utility model provides a multifunctional water system, including: a pipeline system and an electrodialysis unit and an RO unit connected in parallel in the pipeline system. The electrodialysis unit includes an electrodialysis filter cartridge with ion adsorption function, and the RO unit includes an RO filter cartridge 1. Raw water can be processed by the electrodialysis unit and / or the RO unit and then discharged. When the electrodialysis filter cartridge is regenerated, the raw water can flow back through the electrodialysis unit. In the later stage of regeneration, the RO unit produces water and distributes a portion of the produced water to flow back through the electrodialysis unit to rinse the electrodialysis filter cartridge.

[0026] RO filter cartridge 1 has extremely high filtration precision, typically reaching around 0.0001 microns, removing over 95%-99% of various impurities in water, including tiny particles, dissolved solids, organic matter, and bacteria, resulting in very pure water. Electrodialysis filter cartridges typically remove ions from water at a rate of 70%-90%, effectively reducing the salinity of the water. Different situations, such as drinking, cooking, and washing, require different water quality requirements, necessitating a water system capable of providing purified water of varying qualities.

[0027] Based on this, the water system of this utility model includes an electrodialysis unit and an RO unit connected in parallel. Users can select the electrodialysis unit and / or the RO unit to produce water according to their needs, thereby obtaining water with corresponding purification effects and meeting various user requirements. Furthermore, during the regeneration of the electrodialysis filter cartridge, water can still be produced using the RO filter cartridge 1, ensuring an uninterrupted water supply to the user and guaranteeing their water consumption needs. Simultaneously, the regeneration of the electrodialysis filter cartridge is achieved by reverse-flowing raw water through it, completing ion desorption through reverse electrostatic discharge, and then rinsing with a small amount of water produced by the RO unit to achieve the regeneration purpose. This not only achieves the regeneration of the electrodialysis filter cartridge but also avoids excessive waste of water produced by the RO unit, thus helping to reduce the energy consumption of the water purifier.

[0028] In general, situations requiring high water quality are rare. Therefore, one RO filter cartridge 1 is usually sufficient to meet the needs. In most cases, electrodialysis filter cartridges are used for water purification. Therefore, an electrodialysis unit includes at least two electrodialysis filter cartridges connected in parallel. Raw water can be purified by any electrodialysis filter cartridge and / or the RO unit before being discharged. When at least one electrodialysis filter cartridge is regenerated, RO filter cartridge 1 and / or other electrodialysis filter cartridges produce water for discharge. Furthermore, in the later stages of regeneration, the RO unit produces water for discharge and distributes a portion of the produced water in reverse flow through the regenerated electrodialysis filter cartridge for rinsing.

[0029] When regenerating the electrodialysis filter cartridges, if at least one cartridge remains usable, either the electrodialysis filter cartridge or RO filter cartridge 1 can be used for water production as needed. If all electrodialysis filter cartridges are regenerated, RO filter cartridge 1 can be used. Furthermore, in the later stages of electrodialysis filter cartridge regeneration, a portion of the water produced by RO filter cartridge 1 is used to rinse the electrodialysis filter cartridges. Since the water produced by RO filter cartridge 1 is purer, it helps improve the cleanliness of the regenerated electrodialysis filter cartridges.

[0030] It should be noted that during the initial stage of electrodialysis filter cartridge regeneration, the electrodialysis filter cartridge or RO filter cartridge 1 used for water production is not connected to the electrodialysis filter cartridge being regenerated. Furthermore, this invention can involve flushing and regenerating one electrodialysis filter cartridge using one RO filter cartridge 1, or it can involve flushing and regenerating multiple electrodialysis filter cartridges. The specific implementation method depends on the number of electrodialysis filter cartridges and the actual operating conditions.

[0031] When only water production is in operation, raw water is processed by the electrodialysis filter cartridge or RO filter cartridge 1 before being discharged. Furthermore, the electrodialysis filter cartridge or RO filter cartridge 1 currently producing water will not allocate any of its produced water flow to other electrodialysis filter cartridges. The electrodialysis unit and RO unit of this invention are generally not used simultaneously. The water production chamber of the electrodialysis unit can produce water with one electrodialysis filter cartridge, or with two or more cartridges producing water simultaneously, depending on the actual operating conditions.

[0032] At least two electrodialysis filter cartridges are set in a gradient with a water production difference A. In the water production chamber of the electrodialysis unit, the water production difference can be used to ensure that at least one electrodialysis filter cartridge produces water while any electrodialysis filter cartridge is being regenerated, so as to achieve uninterrupted water supply to users and ensure users' water consumption needs.

[0033] Based on the electrodialysis filter cartridge with the lowest water production capacity, the water production difference A is calculated as a percentage, ranging from 20% to 50%. That is, the water production difference A can be 20%, 25%, 30%, 35%, 40%, 45%, 50%, etc., and the specific value is set according to the differences in the number of electrodialysis filter cartridges and the actual operating conditions. For example, when the number of electrodialysis filter cartridges is small, the water production difference can be larger; when the number of electrodialysis filter cartridges is large, the water production difference can be smaller. Setting the water production difference ensures that at least one electrodialysis filter cartridge can produce water for the user during regeneration, guaranteeing a normal water usage experience.

[0034] The water production difference can be calculated by measuring the water production of each electrodialysis filter cartridge using a flow meter to ensure the accuracy of the water production difference. During the water production operation of the electrodialysis unit, when the water production difference is less than A, the raw water flows through the electrodialysis filter cartridge with the lower production capacity and is then processed before exiting the system. This ensures that the water production difference can be restored to A, thereby ensuring that when the electrodialysis filter cartridge with the lower production capacity is regenerated, other electrodialysis filter cartridges have a suitable water production capacity to stably produce water for the user.

[0035] At least two electrodialysis filter cartridges are stacked. This reduces the overall size of the electrodialysis unit, allowing it to occupy less space in a multi-functional water system, thus enabling a compact water purifier.

[0036] Based on the above structure, raw water flows forward through the raw water pipeline through the electrodialysis unit and / or RO unit to produce water, and then exits through the outlet pipeline. During regeneration, the raw water flows backward through the regeneration pipeline through the electrodialysis unit and then exits through the wastewater pipeline. In the later stage of regeneration, the RO unit is reverse-connected to the electrodialysis unit through its connected outlet pipeline for flushing.

[0037] When only water production is in operation, the raw water pipeline is connected to the forward inlet of RO filter element 1 or at least one electrodialysis filter element, and the forward outlet of RO filter element 1 or at least one electrodialysis filter element is directly connected to the outlet pipeline, and is disconnected from the wastewater pipeline and other electrodialysis filter elements.

[0038] When both water production and regeneration are in operation simultaneously, during the initial regeneration phase, RO filter 1 or at least one electrodialysis filter is in water production mode. The raw water pipeline is connected to the forward inlet of RO filter 1 or at least one electrodialysis filter, and the forward outlet of RO filter 1 or at least one electrodialysis filter is directly connected to the outlet pipeline, while being disconnected from the wastewater pipeline and other electrodialysis filter cartridges, thus only water is supplied to the user. Simultaneously, at least one electrodialysis filter is in regeneration mode. The raw water pipeline is connected to the reverse inlet of the regenerated electrodialysis filter, and the reverse outlet of the regenerated electrodialysis filter is connected to the wastewater pipeline, allowing reverse electrostatic discharge to desorb ions and expel wastewater. During the later regeneration phase, raw water supply to the regenerated electrodialysis filter stops, and water is supplied only to RO filter 1, causing its outlet pipeline to be diverted to the reverse inlet of the regenerated electrodialysis filter, providing pure water for rinsing before being discharged through the wastewater pipeline. Furthermore, if the user uses water at this time, the water produced by RO filter 1 will be diverted out.

[0039] The raw water pipeline is equipped with a raw water valve, the effluent pipeline with an effluent valve, the regeneration pipeline with a regeneration valve, and the wastewater pipeline with a wastewater valve. Each of these valves includes at least one of the following: a straight-through valve, a three-way valve, or a four-way valve. The raw water valve, effluent valve, regeneration valve, and wastewater valve are named according to their function to control the opening and closing of each pipeline. One or two valves may share the same valve body, or, in cases with many electrodialysis filter cartridges, a valve with a specific name may have multiple valve bodies, depending on the actual operating conditions. The choice of whether each valve body is a straight-through valve, three-way valve, or four-way valve depends on the number of pipeline connections.

[0040] Flow meters 3 are installed on both the raw water pipeline and the corresponding outlet pipeline of the electrodialysis unit, and TDS meters 4 are installed on the raw water pipeline, outlet pipeline, and wastewater pipeline. The flow meters 3 are used to determine the raw water input flow rate and the water production capacity of each electrodialysis filter element, thereby ensuring the difference in water production capacity. The TDS meters 4 are used to detect the TDS values ​​of the raw water, outlet water, and wastewater to determine whether they meet the usage requirements and discharge standards.

[0041] The raw water pipe is equipped with a pre-filter 2, which can be used to remove microorganisms, large particles and other substances from the raw water. When the water quality requirements are not high, such as for cooking and washing, the raw water filtered by the pre-filter 2 can be used directly.

[0042] Based on the above statements, see Figure 1 The multifunctional water system of this utility model is described in detail here, taking the electrodialysis unit including two electrodialysis filter elements arranged in parallel as an example. The operating principle of other three, four or even more electrodialysis filter elements is the same, and will not be repeated here.

[0043] The multi-functional water system includes a piping system and three parallel-connected RO filter cartridge 1, electrodialysis filter cartridge 5, and electrodialysis filter cartridge 6. All three cartridges are connected to raw water via raw water pipes. The raw water pipes include a main raw water pipe 7, a first raw water pipe 8, a second raw water pipe 9, and a third raw water pipe 10. One end of the main raw water pipe 7 is connected to the raw water supply, and the other end is connected to one end of each of the three pipes via a four-way valve 11. The other end of the first raw water pipe 8 is connected to the forward inlet of the first electrodialysis filter cartridge 5, and a three-way valve 12 is installed on the first raw water pipe 8 to connect to the wastewater pipe 13. The other end of the second raw water pipe 9 is connected to the forward inlet of the second electrodialysis filter cartridge 6, and a three-way valve 14 is installed on the second raw water pipe 9 to connect to the wastewater pipe 15. The other end of the raw water pipe 310 is connected to the inlet of the RO filter element 1.

[0044] The other end of the main raw water pipe 7 is provided with a four-way valve 11 connected to one end of the regeneration pipe 16. The other end of the regeneration pipe 16 is connected to the positive outlet of the electrodialysis filter element 5, and a three-way valve 3 17 is provided on the regeneration pipe 16 to connect to one end of the outlet pipe 18. The raw water pipe 29 is near the four-way valve 11 and is provided with a three-way valve 4 19 to divert water to one end of the regeneration pipe 20. The other end of the regeneration pipe 20 is connected to the positive outlet of the electrodialysis filter element 26, and a three-way valve 5 21 is provided on the regeneration pipe 20 to connect to one end of the outlet pipe 22. The outlet of the RO filter element 1 is connected to one end of the outlet pipe 3 23. The other ends of the outlet pipe 18 and the outlet pipe 22 are connected to one end of the branch pipe 25 via a three-way valve 6. The other ends of the branch pipe 25 and the outlet pipe 3 23 are connected to the main outlet pipe 27 via a three-way valve 7 26 for water discharge.

[0045] Flow meters 3 are installed on the main raw water pipe 7, the first outlet pipe 18, and the second outlet pipe 22. TDS meters 4 are installed on the main raw water pipe 7, the main outlet pipe 27, the first wastewater pipe 13, and the wastewater pipe 15. A pre-filter 2 is installed on the main raw water pipe 7, following the direction of the raw water flow, and is located after the TDS meter 4 on the main raw water pipe 7.

[0046] Therefore, the operating principle of this multi-functional water system is as follows:

[0047] There is a water production difference A between electrodialysis filter cartridge 1 (5) and electrodialysis filter cartridge 2 (6), which can be 20%, 25%, 30%, 35%, 40%, 45%, 50%, etc.

[0048] If only the electrodialysis filter cartridge 5 is used for water production, the raw water is initially filtered by the pre-filter cartridge 2 on the main raw water pipeline 7, then enters the raw water pipeline 8 through the four-way valve 11, flows through the three-way valve 12, and then enters the adsorption ion through the positive inlet of the electrodialysis filter cartridge 5 to produce water. After that, it flows out through the positive outlet of the electrodialysis filter cartridge 5 and then exits through the regeneration pipeline 16, the three-way valve 17, the outlet pipeline 18, the three-way valve 24, the branch pipeline 25, the three-way valve 26, and the main outlet pipeline 27. If only electrodialysis filter cartridge 26 produces water, the raw water is initially filtered by pre-filter cartridge 2 on the main raw water pipeline 7, then enters the raw water pipeline 29 through four-way valve 11, flows through three-way valve 4 19 and three-way valve 2 14, and then enters the adsorption ion port of electrodialysis filter cartridge 26 to produce water. Afterwards, it flows out through the positive outlet of electrodialysis filter cartridge 26 and then through regeneration pipeline 20, three-way valve 5 21, outlet pipeline 22, three-way valve 6 24, branch pipeline 25, three-way valve 7 26, and the main outlet pipeline 27. If both electrodialysis filter cartridge 1 5 and electrodialysis filter cartridge 26 produce water, both water paths can be opened. Flow meter 3 is used to detect the flow rate of the main raw water pipeline 7, outlet pipeline 1 18, and outlet pipeline 2 22 to control the difference in water production A. If only RO filter cartridge 1 produces water, the raw water is initially filtered by the pre-filter cartridge 2 on the main raw water pipeline 7, then enters the raw water pipeline 3 10 through the four-way valve 11, enters the reverse osmosis water production through the inlet of RO filter cartridge 1, and flows out through its outlet, then exits through the outlet pipeline 3 23, the three-way valve 7 26 and the main outlet pipeline 27.

[0049] If only the electrodialysis filter cartridge 5 is being regenerated, in the initial stage of regeneration, the raw water is initially filtered by the pre-filter cartridge 2 on the main raw water pipeline 7, then enters the regeneration pipeline 16 through the four-way valve 11, and enters the positive outlet of the electrodialysis filter cartridge 5 through the three-way valve 17. After reverse electro-ion desorption, the water is discharged through the positive inlet of the electrodialysis filter cartridge 5, and enters the wastewater pipeline 13 through the three-way valve 12 to discharge wastewater. At this point, if the user wants water purified by electrodialysis, the raw water is initially filtered by the pre-filter cartridge 2 on the main raw water pipe 7, then enters the raw water pipe 2 9 through the four-way valve 11, flows through the three-way valve 4 19 and the three-way valve 2 14, and then enters the adsorption ion production through the forward inlet of the electrodialysis filter cartridge 2 6 to produce water. Afterwards, it flows out through the forward outlet of the electrodialysis filter cartridge 2 6 and then through the regeneration pipe 2 20, the three-way valve 5 21, the outlet pipe 2 22, the three-way valve 6 24, the branch pipe 25, the three-way valve 7 26, and the main outlet pipe 27. If the user wants water purified by reverse osmosis, the raw water is initially filtered by the pre-filter cartridge 2 on the main raw water pipe 7, then enters the raw water pipe 3 10 through the four-way valve 11, enters the reverse osmosis water production through the inlet of the RO filter cartridge 1, and then flows out through its outlet, and finally through the outlet pipe 3 23, the three-way valve 7 26, and the main outlet pipe 27. During the later stages of regeneration, the supply of raw water to electrodialysis filter cartridges 5 and 6 ceases. After initial filtration by pre-filter cartridge 2 on the main raw water pipeline 7, the raw water enters the raw water pipeline 10 via four-way valve 11, then flows through the inlet of RO filter cartridge 1 into the reverse osmosis system, exiting through its outlet. It then reaches three-way valve 26 via outlet pipeline 23. A portion of this water flows through branch pipeline 25, three-way valve 24, outlet pipeline 18, and three-way valve 17 into the forward outlet of electrodialysis filter cartridge 5 to flush it, and is then discharged through its forward inlet. Finally, it enters wastewater pipeline 13 via three-way valve 12 to discharge wastewater. If the user uses water at this time, the remaining pure water flows from three-way valve 26 through the main outlet pipeline 27. The principle is the same whether only electrodialysis filter cartridge 6 is regenerated, or whether both electrodialysis filter cartridges 5 and 6 are regenerated. During this process, the TDS meter is used to test the quality of raw water, effluent, and wastewater to determine whether the water quality is usable and meets the discharge standards.

[0050] Furthermore, when the water quality requirements are not high, such as for cooking and washing, the raw water can be directly discharged and used through the main water outlet pipe 27 after being filtered by the pre-filter 2 on the main raw water pipe 7.

[0051] In addition, this utility model also provides a water purifier, including the aforementioned multi-functional water system. The water system includes an electrodialysis unit and an RO unit connected in parallel. Users can select the electrodialysis unit and / or the RO unit to produce water according to their needs, thereby obtaining water with corresponding purification effects and meeting various user requirements. Furthermore, during the regeneration of the electrodialysis filter cartridge, water can still be produced using the RO filter cartridge 1, ensuring uninterrupted water supply to the user and guaranteeing their water consumption needs. Simultaneously, the regeneration of the electrodialysis filter cartridge is achieved by reverse-flowing raw water through it, completing ion desorption through reverse electrostatic discharge, and then rinsing with a small amount of water produced by the RO unit to achieve regeneration. This not only achieves the regeneration of the electrodialysis filter cartridge but also avoids excessive waste of water produced by the RO unit, thus reducing the energy consumption of the water purifier.

[0052] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A multi-functional waterway system, characterized by, include: The pipeline system and the electrodialysis unit and RO unit connected in parallel in the pipeline system, wherein the electrodialysis unit includes an electrodialysis filter element with ion adsorption function, and the RO unit includes an RO filter element, and the raw water can be treated by the electrodialysis unit and / or the RO unit and then discharged as water; During the regeneration of the electrodialysis filter cartridge, the raw water can flow in reverse through the electrodialysis unit. In the later stage of regeneration, the RO unit produces water and distributes a portion of the produced water to flow in reverse through the electrodialysis unit to rinse the electrodialysis filter cartridge.

2. The multi-functional waterway system of claim 1, wherein: The electrodialysis unit includes at least two electrodialysis filter cartridges arranged in parallel, and the raw water can be treated by any of the electrodialysis filter cartridges and / or the RO unit before being discharged. During the regeneration of at least one of the electrodialysis filter cartridges, the RO filter cartridge and / or other electrodialysis filter cartridges produce water for effluent, and in the later stage of regeneration, the RO unit produces water for effluent and distributes a portion of the produced water in reverse flow through the regenerated electrodialysis filter cartridge for rinsing.

3. The multi-functional waterway system of claim 2, wherein: At least two of the aforementioned electrodialysis filter cartridges are set in a gradient with a water production difference A. The water production difference A is calculated as a percentage, with the electrodialysis filter cartridge with the lowest water production as the benchmark, and is between 20% and 50%.

4. The multi-functional waterway system of claim 3, wherein: When the difference in water production is less than A, the raw water flows through the electrodialysis filter cartridge with a lower water production capacity and is then discharged.

5. The multi-functional waterway system of claim 2, wherein: At least two of the aforementioned electrodialysis filter cartridges are stacked together.

6. The multi-functional waterway system according to any one of claims 1-5, wherein: Raw water flows forward through the raw water pipeline through the electrodialysis unit and / or the RO unit, and is then discharged through the outlet pipeline. During regeneration, the raw water flows backward through the regeneration pipeline through the electrodialysis unit and is then discharged as wastewater through the wastewater pipeline. In the later stages of regeneration, the RO unit is connected to the electrodialysis unit in reverse through the outlet pipeline for flushing.

7. The multi-functional waterway system of claim 6, wherein: The raw water pipeline is equipped with a raw water valve, the outlet water pipeline is equipped with an outlet water valve, the regeneration pipeline is equipped with a regeneration valve, and the wastewater pipeline is equipped with a wastewater valve. The raw water valve, the outlet water valve, the regeneration valve, and the wastewater valve all include at least one of a straight-through valve, a three-way valve, and a four-way valve.

8. The multi-functional waterway system of claim 6, wherein: Flow meters are installed on both the raw water pipeline and the outlet pipeline corresponding to the electrodialysis unit, and TDS meters are installed on the raw water pipeline, the outlet pipeline, and the wastewater pipeline.

9. The multifunctional water system according to claim 6, characterized in that: The raw water pipeline is equipped with a pre-filter.

10. A water purifier characterized by comprising: include: The multifunctional water system according to any one of claims 1-9.

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