Water purification system

Abstract

The invention discloses a water purification system, and relates to the technical field of water purification, the water purification system comprises a water inlet waterway, a filtering waterway, a pure water waterway and a fresh mineral waterway, the filtering waterway is communicated with the water outlet end of the water inlet waterway, the filtering waterway is provided with a first filter element, a second filter element and a third filter element, the second filter element is configured to be a mineralized filter element, and the third filter element is configured to be a fresh mineral filter element; the third filter element is a reverse osmosis filter element, the second filter element and the third filter element are arranged at the downstream of the first filter element in parallel, the water inlet end of the pure water path is communicated with the water outlet side of the third filter element, the water inlet end of the fresh mineral water path is communicated with the water outlet side of the second filter element, and the pure water path or the fresh mineral water path is provided with an electrolysis module; the electrolysis module has an opening state and a closing state, so that the water purification system at least has an electrolyzed water outlet state, a fresh mineral water outlet state and a pure water outlet state. According to the technical scheme provided by the invention, the fresh mineral water and the pure water are respectively obtained through the independent filter elements, and the electrolysis module is arranged, so that diversified water demands of users are met.

Description

Technical Field

[0001] This invention relates to the field of water purification technology, and in particular to a water purification system. Background Technology

[0002] Currently, reverse osmosis water purification technology has become the mainstream solution for ensuring drinking water safety due to its superior filtration performance. However, while removing harmful substances, reverse osmosis technology also almost completely filters out beneficial natural minerals such as calcium, magnesium, potassium, and strontium from the water, raising concerns among some users about insufficient intake of trace elements.

[0003] In related technologies, a mineralization filter is connected in series after the reverse osmosis filter. Tap water is filtered into pure water by the reverse osmosis filter and then flows through the mineralization layer to replenish minerals. However, because the pure water filtered by the reverse osmosis filter has extremely high solubility, the precipitation of minerals is difficult to control, making it difficult to replicate the ion balance of natural water and thus failing to meet the user's water needs. Summary of the Invention

[0004] The main objective of this invention is to propose a water purification system that uses independent filter cartridges to obtain fresh mineral water and pure water separately, and incorporates an electrolysis module to meet the diverse water needs of users.

[0005] To achieve the above objectives, the water purification system proposed in this invention includes:

[0006] Water inlet channel; A filtration water path is connected to the outlet end of the inlet water path. The filtration water path is provided with a first filter element, a second filter element, and a third filter element. The second filter element is configured as a mineralization filter element, and the third filter element is configured as a reverse osmosis filter element. The second filter element and the third filter element are arranged in parallel downstream of the first filter element. A pure water circuit, wherein the inlet end of the pure water circuit is connected to the outlet end of the third filter element; and The fresh mineral water channel is connected to the outlet side of the second filter element. The pure water circuit or the fresh mineral water circuit is equipped with an electrolysis module, which has an on state and an off state, so that the water purification system has at least an electrolyzed water output state, a fresh mineral water output state, and a pure water output state.

[0007] In one embodiment, the pure water circuit includes a main road, a pure water direct outlet branch, and a first branch. The inlet of the pure water direct outlet branch and the inlet of the first branch are both connected to the main road, and the outlet of the first branch is connected to the fresh mineral water circuit.

[0008] In one embodiment, the fresh mineral water circuit is equipped with the electrolysis module, and the first branch is located upstream of the electrolysis module at the connection point of the fresh mineral water circuit.

[0009] In one embodiment, the pure water circuit further includes a pipeline machine outlet branch connected in parallel with the pure water direct outlet branch.

[0010] In one embodiment, the pure water circuit further includes a second branch, wherein the inlet end of the first branch and the inlet end of the second branch are connected in parallel to the main circuit, and the inlet end of the pure water direct outlet branch and the inlet end of the pipeline machine outlet branch are connected in parallel to the outlet end of the second branch.

[0011] In one embodiment, the fresh mineral water circuit is equipped with the electrolysis module and a first control valve. The first branch is located downstream of the first control valve at the connection point of the fresh mineral water circuit. The first control valve has an open state and a closed state, so that the electrolyzed water output state corresponds to a weak alkaline water output state and a hydrogen-rich water output state.

[0012] In one embodiment, the water purification system further includes at least one second control valve, wherein the fresh mineral water circuit is provided with the second control valve between the connection position of the first branch and the electrolysis module, and / or the first branch is provided with the second control valve.

[0013] In one embodiment, the third filter element is also connected to a concentrated wastewater discharge path, and the electrolysis module is also connected to an acid wastewater discharge path, wherein the acid wastewater discharge path is connected to the concentrated wastewater discharge path.

[0014] In one embodiment, the water purification system further includes a detection module and a control module, wherein the control module is configured as follows: The detection module is controlled to detect the operating parameters of the electrolysis module; When the operating parameters of the electrolysis module exceed the preset range, it is determined that the electrolysis module has a risk of dry burning, and the electrolysis module is controlled to switch to the off state.

[0015] In one embodiment, the control module is configured as follows: After the electrolysis module has been started for a preset time, the detection module is controlled to continuously detect the operating parameters of the electrolysis module.

[0016] In one embodiment, the filtration water path is further provided with a fourth filter element, the inlet side of the fourth filter element being connected to the outlet side of the third filter element, and the outlet side of the fourth filter element being connected to the inlet end of the pure water path.

[0017] In one embodiment, the outlet side of the fourth filter element is also connected to the inlet end of the fresh mineral water channel.

[0018] In one embodiment, the water purification system further includes a third branch and a fourth branch. The outlet side of the fourth filter element is connected to the inlet end of the fresh mineral water path through the third branch. The inlet end of the fourth branch is connected to the third branch. The outlet end of the third branch is connected to the filtration flow path between the second filter element and the third filter element.

[0019] In one embodiment, the water filtration path is provided with a filtration device, wherein the first filter element and the second filter element are sleeved together at intervals and integrated into the filtration device, the water outlet side of the first filter element and the water inlet side of the second filter element are connected and both are located on opposite sides of the first filter element and the second filter element. The filtration device has a first inlet, a first outlet, and a second outlet. The inlet side of the first filter element is connected to the inlet water passage through the first inlet, the outlet side of the first filter element is connected to the inlet side of the third filter element through the first outlet, and the outlet side of the second filter element is connected to the inlet end of the fresh mineral water passage through the second outlet.

[0020] In one embodiment, the filter device further integrates a fourth filter element, and the filter device forms a first chamber and a second chamber that are not interconnected. The first filter element and the second filter element are disposed in the first chamber, and the first water inlet, the first water outlet and the second water outlet are all connected to the first chamber; The fourth filter element is disposed in the second chamber. The filtration device is also provided with a second water inlet and a third water outlet that connect to the second chamber. The water inlet side of the fourth filter element is connected to the water outlet side of the third filter element through the second water inlet. The water outlet side of the fourth filter element is connected to the water inlet end of the pure water circuit through the third water outlet.

[0021] In this invention, by connecting the second filter element with mineralization function and the third filter element with reverse osmosis function in parallel, the flow paths of the pure water path and the fresh mineral water path are independent of each other. By controlling the electrolysis module to be in the closed state, the water purification system can output water through the pure water path in the pure water output state, or through the fresh mineral water path in the fresh mineral water output state, which can well meet the user's needs for pure water and fresh mineral water. At the same time, the fresh mineral water path or the pure water path is also equipped with an electrolysis module. By controlling the electrolysis module to be in the open state, the water purification system can operate in the electrolyzed water output state, thereby outputting weakly alkaline water or hydrogen-rich water. Thus, the water purification system can have multiple water output states, thereby meeting the diverse water needs of users.

[0022] Specifically, when a user needs fresh mineral water, raw water enters through the inlet water channel. After passing through the first filter to remove large particles such as sediment and residual chlorine, as well as some organic matter, it flows directly into the second filter in the parallel branch. During this process, the water does not undergo deep desalination treatment via a reverse osmosis membrane, thus retaining the natural beneficial mineral framework of calcium, magnesium, potassium, etc., in the raw water. Furthermore, trace elements are further balanced or enhanced through mineralization materials, ultimately forming standard-compliant, drinkable, and mineral-rich fresh mineral water. This pathway not only restores the mineral characteristics of natural water but also significantly improves water resource utilization by avoiding the reverse osmosis process and eliminating the generation of concentrated wastewater.

[0023] When users need pure water, the raw water is pre-treated by the first filter cartridge and then enters the third filter cartridge, where it is deeply filtered to remove bacteria, viruses, heavy metals and inorganic salt ions, forming high-purity pure water to ensure drinking water safety and health, and to meet the high water quality requirements of use scenarios such as infant formula preparation, medicine brewing and high-end tea drinking.

[0024] When users need to obtain electrolyzed water, they can turn on the electrolysis module to electrolyze the fresh mineral water or pure water obtained above to obtain weakly alkaline water or hydrogen-rich water after electrolysis treatment, providing users with more diversified healthy drinking water options. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the flow path of an embodiment of the water purification system provided by the present invention; Figure 2 This is a flow path diagram of another embodiment of the water purification system provided by the present invention; Figure 3 A schematic diagram of the structure of a filtration device for a water purification system provided by the present invention; Figure 4 for Figure 3 A magnified view of a section at point A in the middle; Figure 5 for Figure 3 A magnified view of a section at point B.

[0027] Explanation of icon numbers: 10. Water inlet system; 20. Water filtration path; 210. Filtration device; 201. Pre-filter; 211. First filter; 212. Second filter; 213. Third filter; 214. Fourth filter; 30. Fresh mineral water circuit; 31. First control valve; 32. Second control valve; 40. Pure water circuit; 401. Pure water direct outlet branch; 402. Pipeline machine outlet branch; 41. Main circuit; 42. First branch; 43. Second branch; 44. Third branch; 51. Concentrate wastewater discharge circuit; 52. Acid wastewater discharge circuit; 60. Electrolysis module; 100. Mounting housing; 101. Mounting cavity; 102. First water inlet; 103. Second water inlet; 104. First drain outlet; 105. Second drain outlet; 106. Third drain outlet; 300. Outer shell; 301. First chamber; 302. First water inlet channel; 303. First water outlet channel; 304. Second water outlet channel; 305. Second chamber; 306. Second water inlet channel; 307. Third water outlet channel; 310. Shell; 311. First end; 312. Second end; 313. Mounting port; 314. First annular protrusion; 315. Second annular protrusion; 316. Third annular protrusion; 317. Fourth annular protrusion; 320. Cover; 400. Separator; 410. First pipe body; 420. Second pipe body; 430. First ring plate; 510. Water outlet pipe; 520. Rear end cap; 530. Rear end cap; 540. Front end cap; 541. Front pipe section; 542. Front cover section; 550. Front end cap; 551. Front pipe section; 552. Front cover section.

[0028] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0032] This invention proposes a water purification system.

[0033] Please see Figure 1 and Figure 2 In one embodiment of the present invention, the water purification system includes: Water inlet channel 10; The filtration water path 20 is connected to the outlet end of the inlet water path 10. The filtration water path 20 is provided with a first filter element 211, a second filter element 212 and a third filter element 213. The second filter element 212 is configured as a mineralization filter element and the third filter element 213 is configured as a reverse osmosis filter element. The second filter element 212 and the third filter element 213 are arranged in parallel downstream of the first filter element 211. Pure water path 40, wherein the inlet end of the pure water path 40 is connected to the outlet end of the third filter element 213; and Fresh mineral water channel 30, the inlet end of which is connected to the outlet side of the second filter element 212; The pure water path 40 or the fresh mineral water path 30 is equipped with an electrolysis module 60, which has an on state and a off state, so that the water purification system has at least an electrolyzed water output state, a fresh mineral water output state and a pure water output state.

[0034] In the technical solution of this invention, by connecting the second filter element 212 with mineralization function and the third filter element 213 with reverse osmosis function in parallel, the flow paths of the pure water path 40 and the fresh mineral water path 30 are independent of each other. By controlling the electrolysis module 60 to be in the closed state, the water purification system can output water through the pure water path 40 in the pure water output state, or through the fresh mineral water path 30 in the fresh mineral water output state, which can well meet the user's needs for pure water and fresh mineral water. At the same time, the fresh mineral water path 30 or the pure water path 40 is also equipped with an electrolysis module 60. By controlling the electrolysis module 60 to be in the open state, the water purification system can work in the state of electrolyzed water output, thereby outputting weakly alkaline water or hydrogen-rich water. Thus, the water purification system can have multiple water output states, thereby meeting the diverse water needs of users.

[0035] Specifically, when a user needs fresh mineral water, raw water enters through the inlet water channel 10. After passing through the first filter element 211 to remove large particulate impurities such as sediment and residual chlorine, as well as some organic matter, it flows directly into the second filter element 212 in the parallel branch. During this process, the water does not undergo deep desalination treatment via a reverse osmosis membrane, thus retaining the natural beneficial mineral framework of calcium, magnesium, potassium, etc., in the raw water. Furthermore, trace elements are further balanced or enhanced through mineralization materials, ultimately forming fresh mineral water that meets standards, is drinkable, and is rich in minerals. This pathway not only restores the mineral characteristics of natural water but also significantly improves water resource utilization by avoiding the reverse osmosis process and eliminating the generation of concentrated wastewater.

[0036] When users need pure water, the raw water is pre-treated by the first filter element 211 and then enters the third filter element 213, where it is deeply filtered to remove bacteria, viruses, heavy metals and inorganic salt ions, forming high-purity pure water to ensure drinking water safety and health, and to meet the high water quality requirements of use scenarios such as infant formula preparation, medicine brewing and high-end tea drinking.

[0037] When users need to obtain electrolyzed water, they can turn on the electrolysis module 60 to electrolyze the fresh mineral water or pure water obtained above to obtain weakly alkaline water or hydrogen-rich water after electrolysis treatment, providing users with more diversified healthy drinking water options.

[0038] In particular, the arrangement of the electrolysis module 60 is highly flexible. It can be installed on the main line 41 of the pure water line 40 or the fresh mineral water line 30, or on one of its branch lines. Specifically, the flow path where the electrolysis module 60 is located can be an independent channel dedicated to the output of electrolyzed water, or it can be a flow path shared with the direct output of fresh mineral water or pure water. This allows for the selective supply of either fresh mineral water or pure water, or electrolyzed water, through a single flow path, further simplifying the pipeline structure and improving control efficiency.

[0039] Furthermore, the technical solution of this invention has significant advantages in extending the lifespan of core components and reducing operating costs. In traditional series-connected water purification systems, all effluent must flow through the reverse osmosis filter, resulting in a high filtration load and frequent replacements. In this invention, since the fresh mineral water path 30 is completely independent of the third filter 213, the daily demand for washing, cooking, and direct drinking can be handled by the fresh mineral water path 30, with the pure water path 40 or the electrolysis module 60 only activated for specific needs. This diversion mechanism significantly reduces the cumulative water flow and workload of the third filter 213, thereby significantly extending its service life and reducing the frequency of filter replacements and maintenance costs for users.

[0040] In one embodiment, the pure water circuit 40 includes a main circuit 41, a pure water direct outlet branch circuit 401, and a first branch circuit 42. The inlet end of the pure water direct outlet branch circuit 401 and the inlet end of the first branch circuit 42 are both connected to the main circuit 41, and the outlet end of the first branch circuit 42 is connected to the fresh mineral water circuit 30.

[0041] In this way, unheated, high-purity drinking water at room temperature can be provided through the pure water direct outlet branch 401, which can meet the user's immediate need for large-capacity, room-temperature pure water in scenarios such as cooking, washing vegetables, and drinking cold water directly. Specifically, the pure water direct outlet branch 401 can be directly extended to the drinking water outlet. In addition, it can be connected to the refrigerator inlet for making ice or providing cold drinking water, or it can be connected to the coffee machine inlet or dishwasher inlet to realize the pure water supply for multiple devices in the whole house.

[0042] Furthermore, the pure water circuit 40 can output pure water to the fresh mineral water circuit 30 through the first branch circuit 42, making the water output of the fresh mineral water circuit 30 more flexible. It can output only fresh mineral water or a mixture of fresh mineral water and pure water, thus enabling the water purification system to also have a mixed output state of fresh mineral water and pure water. By adjusting the mixing ratio of fresh mineral water and pure water, the TDS (Total Dissolved Solids) value and mineral concentration of the water supplied by the fresh mineral water circuit 30 can be flexibly adjusted to meet the needs of application scenarios with fine-grained water quality control. Among them, the first branch circuit 42 is equipped with a first one-way valve, which is used to achieve one-way flow from the inlet end to the outlet end of the first branch circuit 42, effectively preventing the water in the fresh mineral water circuit 30 from flowing back to the pure water circuit 40.

[0043] In one embodiment, the fresh mineral water channel 30 is equipped with the electrolysis module 60, and the first branch 42 is located upstream of the electrolysis module 60 at the connection point of the fresh mineral water channel 30. By controlling the on / off state or flow rate of the first branch 42, the system can flexibly adjust the ratio of pure water to fresh mineral water in the raw material water entering the electrolysis module 60. Since the mineral content and conductivity of the raw material water directly affect the electrolysis efficiency and product characteristics, this design allows the system to dynamically optimize the electrolysis raw materials according to different electrolysis requirements, preparing hydrogen-rich water of different concentrations or weakly alkaline water with a specific pH value, thereby outputting electrolyzed water that better meets the user's health needs. In other embodiments, the electrolysis module 60 may also be located upstream of the connection point of the first branch 42, and the electrolysis module 60 may use only fresh mineral water to produce electrolyzed water.

[0044] In one embodiment, the pure water circuit 40 further includes a water outlet branch 402 connected in parallel with the pure water direct outlet branch 401. By extending this water outlet branch 402 to areas such as the living room, bedroom, or office, and connecting it to the inlet of a wall-mounted or tabletop water dispenser, spatial limitations can be overcome, allowing users to obtain high-quality pure water at any time in any living space in the home, greatly improving the convenience of drinking water and quality of life, and meeting the needs of whole-house water purification.

[0045] Of course, other branches can also be set up in parallel with the pure water direct outlet branch 401 to connect to a smart water dispenser with heating or cooling functions, or to serve as a public water supply source for multiple water dispensers in commercial settings.

[0046] In one embodiment, the pure water circuit 40 further includes a second branch 43. The inlet ends of the first branch 42 and the second branch 43 are connected in parallel to the main circuit 41. The inlet ends of the pure water direct outlet branch 401 and the outlet branch 402 of the pipeline machine are connected in parallel to the outlet end of the second branch 43. This allows for the centralized arrangement of control components on the second branch 43, enabling unified scheduling and protection of the downstream pure water direct outlet branch 401 and the pipeline machine outlet branch 402. Specifically, the second branch 43 may be equipped with a second one-way valve to ensure that water flows only from the inlet end to the outlet end, effectively preventing backflow caused by pressure fluctuations at the end. Simultaneously, this branch may also integrate a high-pressure switch for real-time monitoring of pipeline pressure and feedback signals to control system start-up and shutdown, such as implementing full-water shutdown or low-pressure protection. In terms of structural layout, the high-pressure switch and the second one-way valve can be integrated into one unit to save installation space and simplify pipeline connection, or they can be distributed as independent components along the second branch 43 at intervals to adapt to different assembly process requirements.

[0047] In other embodiments, the inlet of the pure water direct outlet branch 401 and the inlet of the pipeline machine outlet branch 402 may be connected in parallel to the outlet of the main road 41, and control devices may be installed on the two branches respectively.

[0048] In one embodiment, please refer to Figure 1 The fresh mineral water circuit 30 is equipped with the electrolysis module 60 and the first control valve 31. The first branch 42 is located downstream of the first control valve 31 at the connection position of the fresh mineral water circuit 30. The first control valve 31 has an open state and a closed state, so that the electrolyzed water output state includes a weak alkaline water output state and a hydrogen-rich water output state.

[0049] Specifically, when the first control valve 31 is open, the electrolysis module 60 is in the state of preparing weakly alkaline water, and the water purification system is in the state of discharging weakly alkaline water accordingly. At this time, fresh mineral water, as the main raw material, flows through the electrolysis module 60, and the first branch 42 can be mixed with pure water or kept closed as needed. Because the fresh mineral water retains an appropriate amount of mineral ions such as calcium and magnesium, it has good conductivity. Under this condition, the electrolysis module 60 operates efficiently, mainly producing weakly alkaline water rich in mineral ions.

[0050] When the first control valve 31 is closed, the electrolysis module 60 is in the state of preparing hydrogen-rich water, and the water purification system is in the state of discharging hydrogen-rich water. At this time, the fresh mineral water flow path is cut off, the first branch 42 is open, and pure water enters the electrolysis module 60 as the only raw material. Since the pure water contains very few impurity ions, the electrolysis process mainly focuses on the cracking of water molecules to produce hydrogen. Therefore, the electrolysis module 60 mainly produces high-concentration hydrogen-rich water under this condition. In this state, since the raw water is pure water with low conductivity, the system can adapt to a higher current density for electrolysis to improve hydrogen production efficiency without worrying about the formation of stubborn scale on the cathode surface due to excessive hardness in the water (such as calcium and magnesium ions). This helps to slow down the corrosion and passivation of the electrodes, thereby protecting the core electrode components and extending the overall service life of the electrolysis module 60.

[0051] Of course, the first control valve 31 is configured as a flow regulating valve, so as to adjust the proportion of fresh mineral water entering the electrolysis module 60 according to the preparation requirements of electrolyzed water.

[0052] In other embodiments, it may also be as follows Figure 2 As shown, the first control valve 31 is not installed in the fresh mineral water circuit 30. In this case, in order to ensure the service life of the electrolysis module, only the fresh mineral water can be used to prepare weak alkaline water.

[0053] In one embodiment, the water purification system further includes at least one second control valve 32, which may be an on / off valve or a flow regulating valve.

[0054] When the fresh mineral water circuit 30 is equipped with the second control valve 32 between the connection position of the first branch 42 and the electrolysis module 60, the outflow rate of the fresh mineral water circuit 30 can be controlled by the second control valve 32, or the flow rate of the raw material water entering the electrolysis module 60 can be controlled to avoid insufficient electrolysis due to excessive flow rate or local overheating caused by excessively slow flow rate.

[0055] When the first branch 42 is equipped with the second control valve 32, the opening and closing of the first branch 42 can be controlled by the second control valve 32, allowing only fresh mineral water to be used as the electrolysis feed water. Alternatively, the second control valve 32 can control the flow rate of pure water and adjust the proportion of pure water in the electrolysis feed water. In this way, the water purification system can reverse-engineer and lock the optimal conductivity of the feed water based on the target water quality (such as a specific pH value or hydrogen concentration), thereby achieving customized output of electrolysis product parameters.

[0056] When the second control valve 32 is installed at the two positions mentioned above, a dual-valve collaborative control mechanism can be formed, thereby enabling more flexible adjustment of the composition and flow rate of the electrolytic raw water.

[0057] In one embodiment, the third filter element 213 is also connected to a concentrated wastewater discharge path 51, and the electrolysis module 60 is also connected to an acid wastewater discharge path 52, which is connected to the concentrated wastewater discharge path 51.

[0058] The third filter element 213 generates concentrated wastewater rich in impurities during operation, while the electrolysis module 60 generates acidic water on its anode side when preparing alkaline or hydrogen-rich water. This embodiment merges the wastewater discharge paths of these two streams, sharing a common drainage outlet. This not only simplifies the piping layout of the water purification system, reduces the number of wall holes and installation complexity, but also achieves centralized wastewater discharge management. Furthermore, the acidic water has a certain bactericidal and cleaning effect; mixing it into the concentrated water discharge pipe helps inhibit bacterial growth and biofilm formation at the drain outlet and on the internal pipe walls, maintaining the cleanliness and hygiene of the drainage system and extending the service life of the piping components.

[0059] Specifically, upstream of the confluence of the two wastewater paths, a wastewater valve is installed in the concentrated wastewater discharge path 51, and a third check valve is installed in the acid wastewater discharge path 52. The wastewater valve is used to control the intermittent or continuous discharge of concentrated wastewater; while the third check valve strictly limits the acid wastewater to flow only unidirectionally towards the confluence point, effectively preventing the risk of concentrated wastewater backflowing into the anode chamber of the electrolysis module 60 under pressure fluctuations, avoiding high-concentration impurities from contaminating the electrodes or disrupting the electrolysis balance, and ensuring the stable operation of the electrolysis module 60.

[0060] In other embodiments, the acidic wastewater discharge path 52 may not be directly connected to the concentrated wastewater discharge path 51, but may be connected to the pre-filter at the inlet of the water purification system. The acidic water can be used to periodically backwash or sterilize the pre-filter element 201 to further enhance the self-cleaning ability of the system. Alternatively, the acidic water can be separately led out to a dedicated cleaning water tap for washing fruits, vegetables or tableware to realize the resource utilization of waste.

[0061] In one embodiment, the water purification system further includes a detection module and a control module, wherein the control module is configured as follows: The detection module is controlled to detect the operating parameters of the electrolysis module 60; When the operating parameters of the electrolysis module 60 exceed the preset range, it is determined that the electrolysis module 60 has a risk of dry burning, and the electrolysis module 60 is controlled to switch to the off state.

[0062] The operating parameters can include real-time current, voltage, electrode temperature, and water flow rate of the electrolysis circuit. The control module has pre-stored safety threshold curves calibrated based on the conductivity characteristics of different water qualities. By detecting the corresponding operating parameters through the detection module, abnormal operating conditions can be identified.

[0063] For example, in the event of a water outage or pipe blockage, the detection module may detect that the water flow rate is zero while the electrolysis module 60 is still energized. Alternatively, the detection module may detect that the voltage abnormally spikes above the set upper limit in constant current control mode, indicating a sharp increase in water resistance and a possible loss of water connection between the plates. Or, the detection module may detect a sharp rise in plate temperature within a short period of time, all of which indicate that the electrolysis module 60 is at risk of dry burning. The control module will cut off the power supply within milliseconds and may also trigger an audible and visual alarm to alert the user.

[0064] Specifically, this system preferably employs a constant current control system, utilizing PWM (Pulse Width Modulation) technology. A DC-DC converter with a Buck topology converts the input voltage into a variable output voltage. A high-precision current sampling resistor collects the electrolytic circuit current in real time and feeds it back to the PWM controller (such as UC3842 or SG3525), dynamically adjusting the PWM duty cycle (0-100%) to maintain a constant current. Under this architecture, if a voltage fluctuation is detected to continuously exceed a set threshold range, the control module determines it as a potential risk of dry burning or poor electrode contact, and immediately stops operation to prevent electrode coating peeling or electrode deformation due to localized overheating.

[0065] This proactive safety protection mechanism not only effectively prevents damage to the electrolytic cell caused by unexpected water outages, inlet blockages, or user misoperation, thus preventing core component burnout and even fires, but also provides targeted protection against the infinite voltage rise of the constant current source in the absence of water. This significantly improves the product's safety and reliability, giving users greater peace of mind. Furthermore, by monitoring the stability of the electrolysis module 60's operating parameters to predict the risk of dry burning, timely intervention can be provided before physical damage occurs, extending the overall lifespan of the electrolysis module 60.

[0066] In other embodiments, after determining the risk and shutting down the electrolysis module 60, the control module not only performs a shutdown operation but also simultaneously closes the inlet solenoid valve or opens the pressure relief valve to completely cut off the water supply and release pipeline pressure, thereby eliminating all potential hazards. Furthermore, the system can upload fault codes to a cloud server or push them to the user's mobile app via Wi-Fi or Bluetooth, enabling after-sales personnel to remotely diagnose the cause of the fault or guide the user through simple troubleshooting. Further, an "automatic reset" logic can be set. After a certain period of shutdown and cooling, if the water flow is detected to return to normal and the parameters return to the safe range, the system can attempt an automatic restart once. If it fails again, it will be permanently locked until manually reset.

[0067] In one embodiment, the control module is configured as follows: After the electrolysis module 60 has been started for a preset time, the detection module is controlled to continuously detect the operating parameters of the electrolysis module 60.

[0068] Specifically, considering that during the cold start of the electrolysis module 60, due to the possible presence of microbubbles on the electrode surface, temporary instability in conductivity caused by low water temperature, or residual air in the water circuit, the current and voltage may experience brief, normal fluctuations. Immediate intervention for protection at this time could easily lead to false alarms and frequent shutdowns. Therefore, the control module is designed with a start-up buffer period, preset to 15 to 30 seconds. During this period, the system primarily performs pressure building, air venting, and parameter preheating, temporarily disabling the alarm for dry burning. Only after the buffer period ends, confirming that the water flow has stabilized, the bubbles on the electrode surface have been expelled, and the water temperature has reached equilibrium, does the system officially activate the high-precision continuous monitoring mode to capture any subtle anomalies during operation.

[0069] In this way, false alarms and unplanned shutdowns caused by normal physical fluctuations at startup are avoided, ensuring a smooth user experience and continuous water output. At the same time, it ensures that strict monitoring can be implemented throughout the entire process after the system enters a stable operating state, taking into account both the system's sensitivity and stability, and achieving better operation and management results. It is especially suitable for complex installation environments with large water quality fluctuations or long pipelines.

[0070] The preset time can be a fixed value determined by pre-shipment testing, or it can be dynamically adjusted based on an adaptive algorithm. The control module can dynamically adjust the buffer period length based on the current inlet water temperature, inlet water pressure, the duration of the last shutdown, and historical startup data. For example, in low-temperature environments, where water viscosity is high and conductivity is low, making it more difficult for air bubbles to escape, the system can automatically extend the buffer period to 45 to 60 seconds; while in high-temperature or short-interval restart scenarios, it is shortened to 10 to 15 seconds. In addition, a "tiered detection" mechanism can be introduced: low-frequency coarse testing is performed at the initial startup stage to intercept only serious faults (such as complete lack of water); high-frequency fine testing is performed after the preset time to intercept minor anomalies (such as slight scaling leading to efficiency reduction), thereby providing more accurate and user-friendly protection logic.

[0071] In one embodiment, the water filtration path 20 is further provided with a fourth filter element 214, the inlet side of the fourth filter element 214 being connected to the outlet side of the third filter element 213, and the outlet side of the fourth filter element 214 being connected to the inlet end of the pure water path 40.

[0072] After deep purification by the third filter element 213, the purified water flows through the fourth filter element 214 for final adsorption treatment. This adsorption aims to remove any trace amounts of volatile organic compounds that may remain in the purified water, eliminate slight odors caused by the pipeline, and further improve the taste of the water. This design not only ensures that the purified water entering the water outlet is pure and sterile in terms of physicochemical indicators, but also achieves a crisp and sweet sensory experience. Especially when connected to heating equipment such as water dispensers, it effectively prevents trace amounts of residual chlorine or organic matter from undergoing chemical reactions during high-temperature heating, thus significantly improving the user's direct drinking experience and the quality of brewed tea. The fourth filter element 214 can be configured as activated carbon, or other functional filtration modules can be added to it.

[0073] Specifically, the outlet side of the fourth filter element 214 is connected to the inlet end of the first branch 42. That is, the pure water path 40 provides pure water treated by the fourth filter element 214 to the fresh mineral water path 30 through the first branch 42, which can further ensure the electrolysis quality of the electrolysis module 60, avoid impurities interfering with the electrode reaction during the electrolysis process, and even generate by-products that affect water quality safety. At the same time, when pure water and fresh mineral water are mixed, the high-quality pure water base can more accurately control the TDS value and mineral ratio of the mixed water, avoid impurities from interfering, and make the final output customized water quality more stable and reliable.

[0074] In one embodiment, the water purification system further includes a main channel 41 and a third branch channel 44. The inlet end of the third branch channel 44 is connected to the main channel 41, and the outlet end of the third branch channel 44 is connected to the filtration flow path between the second filter element 212 and the third filter element 213. Thus, purified water can be reintroduced to the inlet side of the third filter element 213 through the third branch channel 44, achieving a "zero stagnant water" function and improving the quality of drinking water.

[0075] It is understandable that the reverse osmosis membrane of the third filter element 213 has a concentrate side and a pure water side on its two sides, respectively. After the water purification system stops working, bidirectional osmosis will occur between the concentrate side and the pure water side of the third filter element 213 due to the osmotic pressure difference. Over time, the pure water side will be contaminated by the residual concentrate, resulting in a higher TDS value for the first cup of water when it is taken again. This cup of water is called "stale water".

[0076] In this example, after the water purification system stops producing water, a portion of the newly produced pure water can be returned to the inlet side of the third filter element 213 via the third branch 44 to flush the third filter element 213. This pure water flows over the membrane surface, effectively displacing and diluting the high-concentration concentrated water remaining on the concentrate side, significantly reducing the ion concentration gradient across the reverse osmosis membrane. Thus, even during the subsequent shutdown and settling period, the concentration difference has significantly decreased, greatly weakening the reverse osmosis driving force and effectively preventing the migration of concentrated water to the pure water side. Therefore, regardless of the length of the shutdown, the first cup of water dispensed when the user restarts the system will maintain a low TDS value.

[0077] The third branch 44 is equipped with a fourth check valve. When there is a certain pressure on the inlet side of the fourth check valve, the fourth check valve enables one-way flow from the inlet to the outlet of the third branch 44 and suppresses backflow. Furthermore, the third branch 44 is also equipped with a third control valve, which controls the opening and closing of the third branch 44 to control the timing and duration of pure water backflow rinsing. For example, rinsing can be started 10 to 15 minutes after the pure water production is completed, avoiding unnecessary rinsing during high-frequency water intake, thereby saving water and extending the filter life.

[0078] In one embodiment, please refer to Figures 1 to 3 The water filtration path 20 is provided with a filtration device 210. The first filter element 211 and the second filter element 212 are sleeved together at intervals and integrated into the filtration device 210. The water outlet side of the first filter element 211 and the water inlet side of the second filter element 212 are connected and are both located on the opposite side of the first filter element 211 and the second filter element 212. The filtration device 210 has a first inlet 102, a first outlet 104, and a second outlet 105. The inlet side of the first filter element 211 is connected to the inlet water passage 10 through the first inlet 102, the outlet side of the first filter element 211 is connected to the inlet side of the third filter element 213 through the first outlet 104, and the outlet side of the second filter element 212 is connected to the inlet end of the fresh mineral water passage 30 through the second outlet 105.

[0079] In this way, the first filter element 211 and the second filter element 212 can be integrated into the filter device 210, which greatly simplifies the pipeline connection, reduces the number of external joints, thereby reducing the risk of water leakage and improving the overall sealing performance. Furthermore, the first filter element 211 and the second filter element 212 can be centrally inspected and replaced, reducing operational difficulty and maintenance costs. In other embodiments, the first filter element 211 and the second filter element 212 can also be set independently.

[0080] In one embodiment, please refer to Figures 1 to 3 The filter device 210 also integrates a fourth filter element 214, and the filter device 210 forms a first chamber 301 and a second chamber 305 that are not interconnected. The first filter element 211 and the second filter element 212 are disposed in the first chamber 301, and the first water inlet 102, the first drain outlet 104 and the second drain outlet 105 are all connected to the first chamber 301. The fourth filter element 214 is disposed in the second chamber 305. The filtration device 210 is also provided with a second water inlet 103 and a third water outlet 106 communicating with the second chamber 305. The water inlet side of the fourth filter element 214 is connected to the water outlet side of the third filter element 213 through the second water inlet 103, and the water outlet side of the fourth filter element 214 is connected to the water inlet end of the pure water circuit 40 through the third water outlet 106.

[0081] In this way, the second filter element 212 and the fourth filter element 214 can be integrated into the filter device 210. Combined with the integrated setup of the first filter element 211 and the second filter element 212, the pipeline connection can be further simplified, the number of external joints can be reduced, thereby reducing the risk of water leakage and improving the overall sealing performance. In addition, multiple filter elements can be inspected and replaced in a centralized manner, reducing the difficulty of operation and maintenance costs.

[0082] In one embodiment, please refer to Figure 3 The filtration device 210 includes a mounting housing 100, which has a mounting cavity 101. Multiple filter elements are disposed in the mounting cavity 101. The multiple filter elements include a pre-filter element 210 and a fourth filter element 214. The pre-filter element 210 includes a first filter element 211 and a second filter element 212 distributed along a first direction. The second filter element 212 is configured as a mineralization filter element.

[0083] The first drain outlet 104 is configured to output water after the raw water has been filtered by the first filter element 211, the second drain outlet 105 is configured to output water after the raw water has been filtered by the first filter element 211 and the second filter element 212, and the third drain outlet 106 is configured to output water after the filtered water from the third filter element 213 has been filtered by the fourth filter element 214.

[0084] Optionally, the first filter element 211 may be made of materials including but not limited to PP cotton, granular activated carbon, or compressed activated carbon. Its main function is to intercept and remove large particulate impurities in the water, such as rust, silt, and suspended solids, to effectively protect the third filter element 213 located downstream from contamination or clogging. The purified water after being filtered by the first filter element 211 can be further fed into the third filter element 213 for advanced treatment.

[0085] Optionally, the second filter element 212 contains mineral materials, which may include at least one of natural rocks, ceramic balls, and ion exchange resins. The main function of this filter element is to add mineral elements to the water it treats, thereby supplying various functional waters such as mineral water, soda water, or electrolyte water. Specifically, the raw water is first filtered through the first filter element 211 and then treated through the second filter element 212, resulting in water that can be called fresh mineral water. This fresh mineral water retains beneficial mineral components (e.g., total dissolved solids (TDS) greater than or equal to 50 ppm) while removing contaminants such as sediment, rust, and heavy metals from the raw water. The water quality meets the relevant standards of GB / T 5749 "Standards for Drinking Water Quality" and is a safe water source for direct consumption.

[0086] Optionally, the second filter element 212 may include integrated mineral filter elements and mineral-attached filter elements. Integrated mineral filter elements typically employ a direct incorporation process, mixing mineral powders (such as maifanite, diatomaceous earth, zeolite, etc.) with a matrix material in a specific ratio, followed by sintering or extrusion molding to form an integrated filter element structure with mineralization capabilities. For example, mineralizing materials such as strontium-rich ore and metasilicic acid ore can be combined with activated carbon and thermoplastic polymers to create a filter element with continuous mineralization capabilities. Mineral-attached filter elements often utilize nano-modification technology, processing minerals at the nanoscale and using special processes to firmly adhere them to the filter element surface, forming a highly active mineralization functional layer.

[0087] Optionally, the third filter element 213 can be made of various types, such as RO reverse osmosis membrane, ultrafiltration membrane, or nanofiltration membrane. Its core function is to effectively remove dissolved salts, heavy metal ions, bacteria, viruses, and other tiny harmful substances from the water, achieving high-precision water purification. The water obtained after treatment by the third filter element 213 is usually called pure water, which has a high purity and is suitable for direct drinking or use in situations requiring high water quality.

[0088] Optionally, the fourth filter element 214 may be a post-activated carbon filter or a taste-improving filter, etc. Its main function is to further improve the taste of the water, remove residual chlorine and odors, and have a certain antibacterial function. The pure water produced by the third filter element 213 can be sent to the fourth filter element 214 for treatment to improve the taste of the water and inhibit bacterial regeneration. Finally, the water treated by the fourth filter element 214 can be directly sent to the water outlet device. The water outlet device may include various types, such as faucets (including mechanical faucets and smart faucets), coffee machines, or water dispensers.

[0089] Specifically, during actual operation, the water purification system receives raw water flowing into the installation chamber 101 through the first inlet 102. The water is first filtered by the first filter element 211, resulting in two streams: one stream flows directly out of the first outlet 104 and enters the third filter element 213 for further treatment; the other stream continues to flow through the second filter element 212, where it undergoes mineralization filtration and flows out through the second outlet 105, forming fresh mineral water. The water flowing out of the first outlet 104 and into the third filter element 213 is further purified into pure water and then flows back into the installation chamber 101 through the second inlet 103. It then undergoes further purification and antibacterial treatment by the fourth filter element 214 before finally flowing out through the third outlet 106 to the water outlet device, thus supplying pure water. The fresh mineral water flowing out from the second drain outlet 105 can be directly transported to the water outlet device, or it can be first transported to other functional modules (such as the electrolysis module) for further processing to produce functional drinking water such as electrolyte water, and then finally transported to the water outlet terminal.

[0090] The technical solution of the present invention integrates the first filter element 211, the second filter element 212 and the fourth filter element 214 into a filtration device, so that the filtration device can supply pure water and fresh mineral water rich in minerals at the same time, effectively meeting the diversified use scenarios of users with various water quality needs, while significantly simplifying the overall structure of the water purification system and improving integration and ease of use.

[0091] It should be noted that the filter element can have various structural designs, such as an annular structure or a plate-like structure. In some embodiments, if the filter element is a cylindrical annular structure, then the first direction can refer to the radial direction of the filter element.

[0092] For example, please see Figure 3 and Figure 4 In some embodiments, the mounting housing 100 includes an outer shell 300 and a separator 400. A mounting cavity 101 is located within the outer shell 300, and the separator 400 is located within the mounting cavity 101, dividing it into a first chamber 301 and a second chamber 305. The first chamber 301 connects to a first water inlet 102, a first water outlet 104, and a second water outlet 105. The second chamber 305 connects to a second water inlet 103 and a third water outlet 106. A first filter element 211 and a second filter element 212 are located in the first chamber 301, and a fourth filter element 214 is located in the second chamber 305. Thus, through the cleverly designed separator 400, the mounting cavity 101 is effectively divided into two completely independent cavities, namely the first chamber 301 and the second chamber 305. This structural design not only ensures that the preparation processes of fresh mineral water and pure water can be carried out relatively independently within their respective cavities but also achieves complete isolation between the two, avoiding cross-interference and improving the efficiency and stability of the preparation process. Meanwhile, the overall structural design is simple and clear, which not only facilitates the manufacturing and molding of the mounting shell 100, but also reduces the complexity and cost in the production process. Of course, in other embodiments, the mounting shell 100 can also adopt different structural forms according to actual needs to meet diverse application scenarios and functional requirements.

[0093] Please see Figure 3 and Figure 4 Optionally, in some embodiments, the first chamber 301 includes a first inlet channel 302, a first outlet channel 303, and a second outlet channel 304. The second filter element 212 is arranged in an annular structure. The first filter element 211 is arranged around the outer periphery of the second filter element 212. The first inlet channel 302 is located on the outer periphery of the first filter element 211 and communicates with the first inlet 102. The first outlet channel 303 is at least partially formed between the inner peripheral surface of the first filter element 211 and the outer peripheral surface of the second filter element 212. The first outlet channel 303 communicates with the first drain 104. The second outlet channel 304 is located on the inner periphery of the second filter element 212 and communicates with the second drain 105.

[0094] Specifically, after passing through the outer periphery of the second filter element 212, the raw water continues to flow radially through the first filter element 211 and then enters the outer periphery of the second filter element 212, which is the location of the first outlet channel 303. The water in the first outlet channel 303 can either be discharged directly through the first drain outlet 104, or it can continue to flow radially through the second filter element 212 and further into the inner periphery of the second filter element 212, i.e., the second outlet channel 304. The water in the second outlet channel 304 can ultimately be discharged directly through the second drain outlet 105.

[0095] This design makes the overall structure very compact while significantly increasing the effective filtration area of ​​the filter element, especially the first filter element 211, which has a larger filtration area, thus significantly enhancing filtration efficiency and water production capacity. Of course, in other embodiments, the second filter element 212 can be arranged around the outer periphery of the first filter element 211, and the first water inlet channel 302 can be located in the inner periphery of the first filter element 211. Furthermore, the first filter element 211 and the second filter element 212 can also be designed as a straight plate arrangement, or have granular material filled inside the channel, to adapt to different filtration needs and spatial layouts.

[0096] Please see Figure 3 and Figure 4 Optionally, in some embodiments, the pre-filter 210 and the fourth filter 214 are distributed along a second direction, which intersects with the first direction. Specifically, in this embodiment, the pre-filter 210 and the fourth filter 214 are distributed along the axial direction of the filtration device.

[0097] Please refer to Figure 3 In embodiments where the filter element has a cylindrical annular structure, the first direction is defined as the radial direction of the filter element, i.e., the direction extending outward from the center of the filter element, while the second direction is defined as the axial direction of the filter element, i.e., the direction extending along the central axis of the filter element. Further, in embodiments where the filter device is approximately cylindrical, the first direction is also designated as the radial direction of the filter device, i.e., the direction radiating outward from the center of the filter device, while the second direction is designated as the axial direction of the filter device, i.e., the direction extending along the central axis of the filter device. By employing this arrangement, while maintaining a constant radial dimension of the filter device, arranging the pre-filter element 210 and the fourth filter element 214 along the axial direction of the filter device allows the first filter element 211 and the second filter element 212 to have a larger effective filtration area, thereby significantly improving the water treatment system's water production efficiency and filtration effect.

[0098] Optionally, in embodiments where the housing 300 includes a housing 310 and a cover 320, the installation position of the pre-filter 210 is flexible; it can be positioned at one end of the mounting cavity 101 near the cover 320 (e.g., Figure 4 (As shown in the embodiment), it can also be located at the end of the mounting cavity 101 away from the cover 320 (e.g., Figure 3 (See the illustrated embodiment). In other words, the pre-filter 210 can be arranged either close to or away from the second end 312 of the housing 310. The specific position can be adjusted according to actual installation requirements and structural design to achieve better space utilization and filtration performance.

[0099] Of course, in other possible embodiments, the pre-filter 210 and the fourth filter 214 can also be distributed along the first direction, i.e., the radial direction. For example, the fourth filter 214 can be arranged around the outer periphery of the first filter 211, forming a nested structure; or, the second filter 212 can also be arranged around the outer periphery of the fourth filter 214, forming another layered layout. This radial distribution arrangement can also effectively utilize space and, to some extent, optimize the filtration process and the overall performance of the filter elements.

[0100] Please see Figure 3 and Figure 4 Optionally, in one embodiment, the separator 400 includes a first tube 410 extending along a second direction, a second filter element 212 surrounding the outer periphery of the first tube 410, a first inlet channel 302 at least partially formed between the outer peripheral surface of the first filter element 211 and the inner peripheral surface of the housing 300, and a second outlet channel 304 at least partially formed between the inner peripheral surface of the second filter element 212 and the outer peripheral surface of the first tube 410. Specifically, in this embodiment, the first filter element 211 and the second filter element 212 are arranged in the outer peripheral region of the separator 400, making full use of the annular or surrounding space formed outside the separator 400. This structural layout not only provides a larger radial installation dimension for the first filter element 211 and the second filter element 212, but also significantly increases their effective filtration area, thereby improving the overall filtration performance and efficiency. At the same time, this design scheme takes into account the simplicity and practicality of the structure, requiring no complex components or additional adjustments, reducing the difficulty of manufacturing and assembly, and has good engineering feasibility and ease of implementation.

[0101] Please see Figure 3 and Figure 5 Optionally, in one embodiment, the separator 400 further includes a second tube 420 connected to one end of the first tube 410, the diameter of the second tube 420 being larger than the diameter of the first tube 410, and the second tube 420 being disposed around the outer periphery of the fourth filter element 214; multiple inlets and outlets (including each water inlet and water outlet) are located on the same end of the housing 300, the second chamber 305 includes a second water inlet channel 306 and a third water outlet channel 307, and the mounting housing 100 also includes a water outlet. Pipe 510, water outlet pipe 510 is inserted inside first pipe body 410, second water inlet channel 306 is at least partially formed between the outer peripheral surface of water outlet pipe 510 and the inner peripheral surface of first pipe body 410, second water inlet channel 306 connects between second water inlet 103 and inner cavity of second pipe body 420; third water outlet channel 307 is at least partially formed in inner cavity of water outlet pipe 510, third water outlet channel 307 connects between inner cavity of second pipe body 420 and third drain outlet 106.

[0102] That is, in the specific implementation of this embodiment, the fourth filter element 214 is arranged in the mounting cavity 101 at the end away from the second water inlet 103 and the third drain outlet 106. This structure effectively guides and transports the treated pure water into the second pipe body 420 through the radial gap formed between the water outlet pipe 510 and the first pipe body 410. At the same time, the water outlet pipe 510 also serves to transport the purified water, which has undergone final filtration by the fourth filter element 214, to the third drain outlet 106. Through the above integrated design, not only is a reasonable layout and functional reuse of the fluid channel achieved, but the internal space utilization rate is also significantly improved, making the overall structure more compact and the connection more direct. This optimized design effectively reduces unnecessary space occupation, which is conducive to the miniaturization and integration of the overall structure of the filtration device, thereby adapting to the dual requirements of filter element volume and performance in more application scenarios.

[0103] Please see Figure 3 and Figure 5 Optionally, in some embodiments, the fourth filter element 214 is arranged in a ring structure with its axis extending along the second direction, and the end of the water outlet pipe 510 away from the third drain port 106 extends into the inner peripheral space of the fourth filter element 214. Specifically, in this embodiment, pure water flows through the second inlet channel 306 to the outer periphery of the fourth filter element 214, then flows radially through the fourth filter element 214 and into the third outlet channel 307, and then flows along the third outlet channel 307 to the third drain port 106. In this way, the compactness of the overall structure is significantly enhanced, while effectively increasing the usable filtration area of ​​the fourth filter element 214, thereby helping to improve filtration efficiency and overall performance. Of course, in other possible embodiments, the fourth filter element 214 can also adopt different structural designs, such as a flat plate structure, to meet different application requirements or space constraints.

[0104] Please see Figure 3 and Figure 5 Optionally, in some embodiments, in the second direction, the length of the second tube 420 is less than the length of the first tube 410, and the lengths of the first filter element 211 and the second filter element 212 are both greater than the length of the fourth filter element 214. That is, the first filter element 211 and the second filter element 212 have a longer design length in the axial direction. This structural feature is beneficial to significantly increase the effective filtration area of ​​both, thereby further improving their overall filtration efficiency. At the same time, it can effectively increase the outflow of pure water or fresh mineral water, achieving more efficient filtration performance. Of course, in other possible embodiments, the structural design can also be changed. For example, in the second direction, the length of the second tube 420 can be designed to be greater than or equal to the length of the first tube 410, while the lengths of the first filter element 211 and the second filter element 212 can both be less than or equal to the length of the fourth filter element 214. Such a configuration can also meet different filtration needs and performance optimization goals.

[0105] Please see Figure 3 and Figure 5 Optionally, in some embodiments, the separator 400 further includes a first annular plate 430. The inner periphery of the first annular plate 430 is connected to the opening of the first tube 410, and the outer periphery of the first annular plate 430 is connected to the opening of the second tube 420. The second tube 420 is located on the side of the first annular plate 430 away from the first tube 410. Thus, by increasing the inner diameter of the second tube 420, its internal volume can be effectively expanded, giving the overall structure a stronger load-bearing and capacity-accommodating capability. At the same time, the larger inner diameter also provides ample space for the fourth filter element 214, allowing it to have a larger effective filtration area, thereby significantly improving filtration efficiency and throughput. Of course, in other feasible embodiments, different structural configurations can be adopted. For example, the first annular plate 430 can be omitted, and the first tube 410 can be directly inserted into the opening of the second tube 420, still achieving the structural connection and functional requirements, providing flexible structural options for different application scenarios.

[0106] Please see Figure 3 and Figure 5 Optionally, in some embodiments, the mounting housing 100 further includes a rear end cap 520 and a rear second end cap 530 spaced apart along a second direction. The rear end cap 520 is arranged around the outer periphery of the end of the water outlet pipe 510 that extends into the second pipe body 420, and is spaced apart from the first annular plate 430. The second water inlet channel 306 is partially formed between the rear end cap 520 and the first annular plate 430. The fourth filter element 214 is disposed between the rear end cap 520 and the rear second end cap 530. That is, when pure water enters the inner cavity of the second pipe body 420, its flow direction is first towards the outer peripheral area of ​​the fourth filter element 214, and then the water flows radially through the porous structure of the entire fourth filter element 214 under pressure, and finally enters the inner cavity of the fourth filter element 214. After this filtration process is completed, the purified pure water is guided by the water outlet pipe 510 and flows out stably from the third drain outlet 106. This design ensures that all flowing pure water fully contacts the filter medium of the fourth filter element 214, thereby effectively removing any trace impurities that may remain and improving the purity and safety of the final effluent.

[0107] The rear end cap 520 can be manufactured as a single piece with the water outlet pipe 510. This design effectively improves the overall structure and the reliability of the connection, while reducing assembly steps and increasing production efficiency. Of course, depending on different application requirements and manufacturing conditions, in other embodiments, the rear end cap 520 and the water outlet pipe 510 can also be manufactured independently and then firmly connected as a single piece through assembly or welding processes. This split design provides greater flexibility and adaptability, making it easier to meet different engineering requirements and production environments.

[0108] Please see Figure 3 Optionally, in some embodiments, the separator 400 is configured with one end open and the other end closed, with the open end of the separator 400 close to and connected to the second inlet 103. That is, the end of the second pipe 420 away from the first pipe 410 is a closed structure, and the end of the first pipe 410 away from the second pipe 420 is an open structure. In this way, the manufacturing and forming process of the separator 400 becomes simpler and more efficient, and the assembly process between the separator 400 and the housing 300 is also greatly simplified. Secondly, this design effectively reduces the sealing fit structure required between the separator 400 and the housing 300, thereby improving the isolation effect between the first chamber 301 and the second chamber 305 and the sealing reliability of the overall structure. During assembly, once the separator 400 is installed inside the housing 300, the mounting cavity 101 can be directly and clearly divided into the independent first chamber 301 and the second chamber 305 without additional complex processes, significantly simplifying the forming and assembly steps of the cavity.

[0109] In addition, in other possible embodiments, the separator 400 may also be designed as an open structure at both ends. In this case, the housing 300 may be provided with a sealing cap or sealing post at the position corresponding to the opening of the second tube 420. By covering the open end of the second tube 420 with the sealing cap or sealing the opening with the sealing post, the second tube 420 can be effectively closed, ensuring its sealing performance and the integrity of the cavity partition.

[0110] Please see Figures 3 to 5Optionally, in some embodiments, the housing 300 includes a housing 310 and a cover 320. The housing 310 has a first end 311 and a second end 312 opposite to each other in a second direction. The first end 311 is provided with an installation port 313 for inserting a filter element. The cover 320 is movably covered on the installation port 313, and multiple inlets and outlets are located on the second end 312. Thus, by concentrating all inlets and outlets on the second end 312 of the housing 310, the installation process of the filter device in the water purification system can be effectively simplified, assembly efficiency can be significantly improved, and the filter device can be quickly and reliably connected to the water circuit within the water purification system, thereby improving the overall system stability and maintenance convenience. Of course, in other possible embodiments, depending on actual structural requirements, some inlets and outlets can be arranged on the first end 311 of the housing 310, while other inlets and outlets can be arranged on the second end 312 to achieve different interface layouts and connection methods.

[0111] Please see Figure 3 and Figure 4 To further improve the ease of assembly and user-friendliness of the filtration device, as a preferred embodiment, all inlets and outlets can be uniformly located on the end face of the second end 312 and extend along the second direction, thereby achieving centralized and directional consistency of the interfaces, facilitating user alignment and connection. Of course, in other embodiments, depending on different design requirements and space constraints, some inlets and outlets can also be arranged on the peripheral side of the second end 312 to provide more flexible installation options and adaptation schemes.

[0112] Please see Figure 3 and Figure 4 Optionally, in some embodiments, the inner wall surface of the housing 310 is provided with a first annular protrusion 314, a second annular protrusion 315, a third annular protrusion 316, and a fourth annular protrusion 317 spaced apart. The first annular protrusion 314 surrounds the outer periphery of the second annular protrusion 315, the second annular protrusion 315 surrounds the outer periphery of the third annular protrusion 316, and the third annular protrusion 316 surrounds the outer periphery of the fourth annular protrusion 317. The outer peripheral surface of the first pipe body 410 is sealed to the inner peripheral surface of the third annular protrusion 316, and the second water inlet 103 is connected to the third... The space between the annular protrusion 316 and the fourth annular protrusion 317; the outer peripheral surface of the outlet pipe 510 is sealed to the inner peripheral surface of the fourth annular protrusion 317; the third drain outlet 106 is connected to the inner peripheral space of the fourth annular protrusion 317; the first inlet 102 is connected to the space between the first annular protrusion 314 and the inner sidewall of the outer casing 300; the first drain outlet 104 is connected to the space between the first annular protrusion 314 and the second annular protrusion 315; and the second drain outlet 105 is connected to the space between the second annular protrusion 315 and the third annular protrusion 316. Thus, the structure is simple and easily achieves effective separation between different flow channels.

[0113] In embodiments where the inner wall surface of the housing 310 is provided with a first annular protrusion 314, a second annular protrusion 315, a third annular protrusion 316 and a fourth annular protrusion 317 at intervals, there are multiple ways to use these annular protrusion structures to separate different flow channels from each other. For example, in some embodiments, the mounting housing 100 further includes a front end cap 540 and a front second end cap 550. The front end cap 540 is disposed around the outer periphery of the front second end cap 550, and the front second end cap 550 is arranged in an annular structure. The front end cap 540 includes a front tube portion 541 and a front cover portion 542 connected together. The outer peripheral surface of the front tube portion 541 is sealed to the inner peripheral surface of the first annular protrusion 314. The opening of the front cover portion 542 is disposed away from the front tube portion 541, and the end of the first filter element 211 is inserted into the front cover portion 542. The front second end cap 550 includes a front second tube portion 551 and a front second cover portion 552 connected together. The outer peripheral surface of the front second tube portion 551 is sealed to the inner peripheral surface of the second annular protrusion 315. The opening of the front second cover portion 552 is disposed away from the front second tube portion 551, and the end of the second filter element 212 is inserted into the front second cover portion 552. A gap is provided between the outer peripheral wall of part 542 and the inner wall of the outer casing 300 to allow water from the first inlet 102 to flow into the first inlet channel 302; the inner peripheral wall of the first cover part 542 and the outer peripheral wall of the second cover part 552 support each other and are provided with a gap, and a gap is provided between the inner peripheral surface of the first pipe part 541 and the outer peripheral surface of the second annular protrusion 315 to allow water from the first outlet channel 303 to flow out to the first drain outlet 104; the inner peripheral wall of the second cover part 552 and the outer peripheral surface of the first pipe body 410 support each other and are provided with a gap, and a gap is provided between the inner peripheral surface of the second pipe part 551 and the outer peripheral surface of the third annular protrusion 316 to allow water from the second outlet channel 304 to flow out to the second drain outlet 105; a gap is provided between the inner peripheral surface of the first pipe body 410 and the outer peripheral surface of the fourth annular protrusion 317 to allow water from the second inlet 103 to flow into the second inlet channel 306.

[0114] It should be noted that, in the embodiments of the present invention, when it is mentioned that "a gap is provided" between two structures, it does not mean that there is absolutely no contact between the two structures. Rather, it encompasses two possible connection relationships: one is that some areas of the two structures are in contact while other areas are not; the other is that a circumferential gap is formed when there is no contact at all. For a specific example, the description "the inner peripheral wall of the second front cover 552 and the outer peripheral surface of the first tube 410 support each other and are provided with a gap" actually means that the second front cover 552 and the first tube 410 maintain contact in a certain local area to achieve the function of physical support, while a certain gap is reserved in the remaining areas to form the required "gap". As another example, "a gap is provided between the inner peripheral surface of the second front tube 551 and the outer peripheral surface of the third annular protrusion 316" may indicate that the second front tube 551 and the third annular protrusion 316 are not in contact at all, thus forming a continuous and closed gap structure between them.

[0115] Furthermore, regarding the implementation of the "sealing fit," the present invention can employ various technical means, including not only achieving sealing by compressing elastic sealing elements (such as O-rings, gaskets, etc.), but also achieving a sealing effect through fixed connections between two components such as welding. For example, the "sealing fit between the outer circumferential surface of the front second tube section 551 and the inner circumferential surface of the second annular protrusion 315" can be specifically implemented as follows: an elastic sealing ring is pre-fitted onto the outer circumferential surface of the front second tube section 551. When it is inserted into the interior of the second annular protrusion 315, both components jointly compress the sealing ring, causing it to undergo elastic deformation and thus filling any possible gaps, achieving a reliable sealing connection.

[0116] The above description is merely an exemplary embodiment of the present invention and does not limit the scope of protection of the present invention. Any equivalent structural transformations made based on the technical concept of the present invention and the contents of the specification and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.

Claims

1. A water purification system, characterized in that, include: Water inlet channel; A filtration water path is connected to the outlet end of the inlet water path. The filtration water path is provided with a first filter element, a second filter element, and a third filter element. The second filter element is configured as a mineralization filter element, and the third filter element is configured as a reverse osmosis filter element. The second filter element and the third filter element are arranged in parallel downstream of the first filter element. A pure water circuit, wherein the inlet end of the pure water circuit is connected to the outlet side of the third filter element; as well as The fresh mineral water channel is connected to the outlet side of the second filter element. The pure water circuit or the fresh mineral water circuit is equipped with an electrolysis module, which has an on state and an off state, so that the water purification system has at least an electrolyzed water output state, a fresh mineral water output state, and a pure water output state.

2. The water purification system as described in claim 1, characterized in that, The pure water circuit includes a main road, a pure water direct outlet branch road, and a first branch road. The inlet end of the pure water direct outlet branch road and the inlet end of the first branch road are both connected to the main road, and the outlet end of the first branch road is connected to the fresh mineral water circuit.

3. The water purification system as described in claim 2, characterized in that, The fresh mineral water circuit is equipped with the electrolysis module, and the first branch is located upstream of the electrolysis module at the connection point of the fresh mineral water circuit.

4. The water purification system as described in claim 2, characterized in that, The pure water circuit also includes a pipeline machine outlet branch connected in parallel with the pure water direct outlet branch.

5. The water purification system as described in claim 4, characterized in that, The pure water circuit also includes a second branch, wherein the inlet end of the first branch and the inlet end of the second branch are connected in parallel to the main circuit, and the inlet end of the pure water direct outlet branch and the inlet end of the pipeline machine outlet branch are connected in parallel to the outlet end of the second branch.

6. The water purification system as described in claim 2, characterized in that, The fresh mineral water circuit is equipped with the electrolysis module and the first control valve. The first branch is located downstream of the first control valve at the connection point of the fresh mineral water circuit. The first control valve has an open state and a closed state, so that the electrolyzed water output state includes a weak alkaline water output state and a hydrogen-rich water output state.

7. The water purification system as described in claim 6, characterized in that, The water purification system further includes at least one second control valve, wherein the fresh mineral water circuit is provided with the second control valve between the connection position of the first branch and the electrolysis module, and / or the first branch is provided with the second control valve.

8. The water purification system as described in claim 1, characterized in that, The third filter element is also connected to a concentrated wastewater discharge path, and the electrolysis module is also connected to an acid wastewater discharge path, which is connected to the concentrated wastewater discharge path.

9. The water purification system as described in claim 1, characterized in that, The water purification system further includes a detection module and a control module, wherein the control module is configured as follows: The detection module is controlled to detect the operating parameters of the electrolysis module; When the operating parameters of the electrolysis module exceed the preset range, it is determined that the electrolysis module has a risk of dry burning, and the electrolysis module is controlled to switch to the off state.

10. The water purification system as described in claim 9, characterized in that, The control module is configured as follows: After the electrolysis module has been started for a preset time, the detection module is controlled to continuously detect the operating parameters of the electrolysis module.

11. The water purification system as described in claim 1, characterized in that, The filtration water path is also provided with a fourth filter element, the inlet side of which is connected to the outlet side of the third filter element, and the outlet side of which is connected to the inlet end of the pure water path.

12. The water purification system as described in claim 11, characterized in that, The outlet side of the fourth filter element is also connected to the inlet end of the fresh mineral water circuit.

13. The water purification system as described in claim 12, characterized in that, The water purification system also includes a main road and a third branch road. The inlet of the third branch road is connected to the main road, and the outlet of the third branch road is connected to the filtration flow path between the second filter element and the third filter element.

14. The water purification system as described in claim 1, characterized in that, The filtration water path is equipped with a filtration device. The first filter element and the second filter element are sleeved together at intervals and integrated into the filtration device. The water outlet side of the first filter element and the water inlet side of the second filter element are connected and are both located on the opposite side of the first filter element and the second filter element. The filtration device has a first inlet, a first outlet, and a second outlet. The inlet side of the first filter element is connected to the inlet water passage through the first inlet, the outlet side of the first filter element is connected to the inlet side of the third filter element through the first outlet, and the outlet side of the second filter element is connected to the inlet end of the fresh mineral water passage through the second outlet.

15. The water purification system as described in claim 14, characterized in that, The filter device also integrates a fourth filter element, and the filter device forms a first chamber and a second chamber that are not interconnected. The first filter element and the second filter element are disposed in the first chamber, and the first water inlet, the first water outlet and the second water outlet are all connected to the first chamber; The fourth filter element is disposed in the second chamber. The filtration device is also provided with a second water inlet and a third water outlet that connect to the second chamber. The water inlet side of the fourth filter element is connected to the water outlet side of the third filter element through the second water inlet. The water outlet side of the fourth filter element is connected to the water inlet end of the pure water circuit through the third water outlet.

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