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 fresh mineral waterway and a pure water 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 waterway; the third filter element is a reverse osmosis filter element, the second filter element and the third filter element are arranged on the downstream of the first filter element in parallel, the water inlet end of the fresh mineral water path is communicated with the water outlet side of the second filter element, the water outlet end of the fresh mineral water path is communicated with the fresh mineral water using end, and the water inlet end of the pure water path is communicated with the water outlet side of the third filter element. And the pure water path can be communicated with the fresh mineral water using end, so that mixed outlet water of fresh mineral water and pure water can be formed at the fresh mineral water using end. The fresh mineral water and the pure water are obtained through the independent filter elements, so that the fresh mineral water which meets the drinking standard and has the mineral content capable of being flexibly adjusted is provided for a user, and the water use requirement of the user is 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, so as to provide users with fresh mineral water that meets drinking standards and whose mineral content can be flexibly adjusted, thereby meeting users' water needs.

[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 fresh mineral water channel, wherein the inlet end of the fresh mineral water channel is connected to the outlet end of the second filter element, and the outlet end of the fresh mineral water channel is connected to the fresh mineral water user end; and The pure water circuit has an inlet end connected to the outlet end of the third filter element, and the pure water circuit can be connected to the fresh mineral water outlet end, so that the fresh mineral water outlet end can form a mixed outlet of fresh mineral water and pure water.

[0007] In one embodiment, the water purification system further includes a faucet, and both the fresh mineral water path and the pure water path are connected to the faucet.

[0008] In one embodiment, the faucet is configured as a mixing faucet.

[0009] In one embodiment, the faucet can switch between the fresh mineral water supply end and the pure water supply end.

[0010] In one embodiment, the pure water circuit further branches into a first branch between the inlet and outlet ends, the outlet end of the first branch being connected to the fresh mineral water circuit, and the first branch being equipped with a first one-way valve.

[0011] In one embodiment, the pure water circuit is further provided with a first control valve, which is located upstream of the branch position of the first branch, and the fresh mineral water circuit is further provided with a second control valve, which is located downstream of the connection position of the first branch.

[0012] In one embodiment, the fresh mineral water circuit is provided with a second one-way valve, which is located upstream of the connection point of the first branch.

[0013] In one embodiment, the filtration water path is further provided with an inlet water quality detector and a booster pump, which are located upstream of the third filter element; The water purification system also includes a control module, which is electrically connected to the inlet water quality detector and the booster pump. The control module is configured to control the speed of the booster pump based on the detection results of the inlet water quality detector and the target water quality of the fresh mineral water effluent.

[0014] In one embodiment, the pure water circuit is further equipped with an outlet water quality detector, and the control module controls the speed of the booster pump based on the detection result of the outlet water quality detector.

[0015] In one embodiment, both the influent water quality detector and the effluent water quality detector include a TDS detection module.

[0016] In one embodiment, the filtration water path includes a main path, a first filtration branch path, and a second filtration branch path. The first filter element is disposed in the main path, the second filter element is disposed in the first filtration branch path, and the third filter element is disposed in the second filtration branch path. The inlet end of the fresh mineral water path is connected to the outlet end of the first filtration branch path, and the inlet end of the pure water path is connected to the outlet end of the second filtration branch path.

[0017] In one embodiment, the second filtration branch is further provided with a third control valve upstream of the third filter element.

[0018] In one embodiment, the water purification system includes a first filtration device, wherein the first filter element and the second filter element are integrated into the first filtration device.

[0019] In one embodiment, the first filtration branch is further provided with a fourth filter element, which is located upstream of the second filter element.

[0020] In one embodiment, the water purification system includes a second filtration device, wherein the first filter element and the fourth filter element are integrated into the second filtration device.

[0021] In one embodiment, the second filtration branch is further provided with a fifth filter element, which is located downstream of the third filter element. The water purification system includes a third filtration device, and the fifth filter element and the second filter element are integrated into the third filtration device.

[0022] In the technical solution of this invention, by connecting the second filter element with mineralization function and the third filter element with reverse osmosis function in parallel, the fresh mineral water obtained after treatment by the second filter element flows into the fresh mineral water channel for users to use, and the pure water obtained after treatment by the third filter element flows into the pure water channel for users to use, which can well meet the users' needs for pure water and fresh mineral water.

[0023] 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.

[0024] 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.

[0025] Furthermore, the pure water circuit is also connected to the fresh mineral water outlet, allowing the fresh mineral water outlet to produce a mixture of fresh mineral water and pure water. Users can freely set the mixing ratio of pure water and fresh mineral water to obtain customized water quality with just the right TDS value and mineral concentration, which can meet the diverse water needs of users. Attached Figure Description

[0026] 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.

[0027] Figure 1This is a schematic diagram of a structure of an embodiment of the water purification system provided by the present invention; Figure 2 This is a schematic diagram of another embodiment of the water purification system provided by the present invention; Figure 3 A schematic diagram of another embodiment of the water purification system provided by the present invention; Figure 4 This is a schematic diagram of another embodiment of the water purification system provided by the present invention; Figure 5 This is a schematic diagram of another embodiment of the water purification system provided by the present invention; Figure 6 This is a schematic diagram of another embodiment of the water purification system provided by the present invention; Figure 7 A schematic diagram of the structure of a fourth filtration device in another embodiment of the water purification system provided by the present invention; Figure 8 for Figure 7 A magnified view of a section at point A in the middle; Figure 9 for Figure 7 A magnified view of a section at point B in the middle.

[0028] Explanation of icon numbers: 10. Water inlet system; 20. Filtration water path; 201. First filtration branch; 202. Second filtration branch; 210. First filtration device; 220. Second filtration device; 230. Third filtration device; 250. Pre-filter; 211. First filter; 212. Second filter; 213. Third filter; 214. Fourth filter; 215. Fifth filter; 30. Fresh Mine Waterway; 40. Pure water path; 41. First branch path; 51. Inlet water quality detector; 52. Outlet water quality detector; 53. Booster pump; 54. Faucet; 61. First control valve; 62. Second control valve; 63. Third control valve; 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.

[0029] 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

[0030] 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.

[0031] 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.

[0032] 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.

[0033] This invention proposes a water purification system.

[0034] Please see Figures 1 to 6 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. Fresh mineral water channel 30, wherein the inlet end of the fresh mineral water channel 30 is connected to the outlet end of the second filter element 212, and the outlet end of the fresh mineral water channel 30 is connected to the fresh mineral water user end; and The pure water path 40 is connected to the outlet side of the third filter element 213, and the pure water path 40 can be connected to the fresh mineral water end, so that the fresh mineral water end can form a mixed water outlet of fresh mineral water and pure water.

[0035] 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 fresh mineral water obtained after treatment by the second filter element 212 flows into the fresh mineral water channel 30 for users to use, and the pure water obtained after treatment by the third filter element 213 flows into the pure water channel 40 for users to use, which can well meet the users' needs for pure water and fresh mineral water.

[0036] 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.

[0037] 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.

[0038] Furthermore, the pure water path 40 is also connected to the fresh mineral water outlet, allowing the fresh mineral water outlet to produce a mixed output of fresh mineral water and pure water. Users can freely set the mixing ratio of pure water and fresh mineral water to obtain customized water quality with a perfectly balanced TDS (Total Dissolved Solids) value and mineral concentration, meeting diverse user needs. It can be understood that this mixed water is essentially fresh mineral water with a lower mineral content.

[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 cartridge, 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 cartridge 213, the daily large-scale washing, cooking, and direct drinking needs can be handled by the fresh mineral water path 30, with the pure water path 40 only activated for specific needs. This diversion mechanism significantly reduces the cumulative water flow and workload of the third filter cartridge 213, thereby significantly extending its service life and reducing the frequency of filter replacements and maintenance costs for users.

[0040] In one embodiment, the water purification system further includes a faucet 54, through which the fresh mineral water path 30 and the pure water path 40 are both connected. Thus, fresh mineral water, pure water, and a mixture of both can be integrated into a single faucet 54, greatly simplifying the layout of the water purification system. This eliminates the need for multiple faucets 54 to meet diverse drinking water needs and improves space utilization.

[0041] In one embodiment, the faucet 54 is configured as a mixing faucet 54. It can be understood that the outlet of the fresh mineral water circuit 30 should be connected to the faucet 54, which is also the outlet of the fresh mineral water. By configuring the faucet 54 as a mixing faucet 54, the connection between the pure water circuit 40 and the outlet of the fresh mineral water is realized.

[0042] Specifically, the faucet 54 is equipped with a proportional adjustment valve, which allows users to adjust the mixing ratio of fresh mineral water and pure water by rotating the handle or inputting commands. It can be infinitely adjusted between 100% fresh mineral water and 100% pure water. At the same time, the internal flow channel is designed with a static mixer to ensure that the two water qualities are fully mixed before flowing out of the faucet, avoiding stratification.

[0043] In this way, users can choose the mixing ratio of fresh mineral water and purified water according to their personal taste preferences or specific brewing needs, greatly enriching the personalized choices for drinking water. In addition, the mixing faucet 54 can have a one-button preset function, setting quick settings such as "tea brewing mode" and "milk making mode" to correspond to different mixing ratios of fresh mineral water and purified water. Users can directly reach the optimal mixing ratio with one touch, without having to manually adjust it each time.

[0044] In this embodiment, the fresh mineral water path 30 and the pure water path 40 can be set up independently until they merge in the mixing chamber of the faucet 54. This minimizes dead water zones in the pipeline, ensures that every adjustment can be responded to instantly, and prevents water quality parameter degradation or pipeline scaling due to long-distance mixing and transportation.

[0045] In one embodiment, the faucet 54 can switch between the fresh mineral water supply end and the pure water supply end. That is, the faucet 54 is configured as a switchable faucet, capable of switching between a single mode of fresh mineral water supply end and pure water supply end.

[0046] Specifically, the faucet 54 is internally equipped with two water outlets and a valve core for switching between them. The two water outlets are connected to the fresh mineral water outlet 30 and the pure water outlet 40, respectively. Users can control the valve core to selectively shut off one water outlet and open the other, depending on their water usage needs. Specifically, the two water outlets are physically isolated inside the faucet, sharing the same spout only at the outlet, or a dual-spout design can be used to ensure the purity of the pure water and the mineral content of the fresh mineral water.

[0047] At this point, the pure water path 40 should have a branch path connecting to the fresh mineral water, so that the pure water path 40 and the fresh mineral water end can be connected, allowing the fresh mineral water to be mixed with pure water in different proportions.

[0048] Specifically, please refer to Figures 2 to 6 The pure water path 40 branches into a first branch 41 between its inlet and outlet ends. The outlet end of the first branch 41 is connected to the fresh mineral water path 30, and the first branch 41 is equipped with a first one-way valve. Thus, the pure water path 40 can supply pure water to the fresh mineral water path 30 through the first branch 41. The mixing of fresh mineral water and pure water occurs before the water is used, utilizing the length of the pipeline and the natural turbulence of the fluid to provide a longer mixing path and more sufficient fusion time for the two water qualities, ensuring that the water quality is highly homogeneous by the time it reaches the outlet. It should be noted that this technique of mixing water in the pipeline is not only applicable when the fresh mineral water and pure water ends are integrated into the same faucet 54, but also suitable for scenarios where the two water ends are set separately.

[0049] Furthermore, in this embodiment, the pure water circuit 40 is also provided with a first control valve 61, which is located upstream of the branch position of the first branch circuit 41, and the fresh mineral water circuit 30 is also provided with a second control valve 62, which is located downstream of the connection position of the first branch circuit 41.

[0050] In this embodiment, the mode can be switched by the faucet 54 and the opening and closing of the first control valve 61 and the second control valve 62, thereby switching between the state of fresh mineral water output and pure water output.

[0051] Specifically, when the faucet 54 is in the pure water outlet state, that is, when it is used as the pure water outlet, the fresh mineral water outlet is equivalent to being closed. At this time, the first control valve 61 is opened and the second control valve 62 is closed, so that the pure water will not pass through the first branch 41, but will flow directly to the faucet 54, thereby providing pure water to the user. When faucet 54 is in the fresh mineral water dispensing state, that is, when it is used as the fresh mineral water outlet, the pure water outlet is essentially closed. At this time, the first control valve 61 is closed and the second control valve 62 is open. The fresh mineral water output from the fresh mineral water outlet is not mixed with pure water and is essentially 100% fresh mineral water. Furthermore, at this time, both the first control valve 61 and the second control valve 62 can be opened, allowing pure water to enter the fresh mineral water circuit 30 through the first branch 41. This results in the fresh mineral water output from the fresh mineral water outlet being mixed with a certain proportion of pure water. This mixed water is essentially fresh mineral water with a lower mineral content. Furthermore, the mixing ratio of pure water can be controlled by adjusting the opening of the first control valve 61, ensuring that the mineral content of the fresh mineral water output from the fresh mineral water outlet meets the user's requirements.

[0052] In one embodiment, the fresh mineral water path 30 is equipped with a second one-way valve, which is located upstream of the connection point of the first branch 41. That is, the second one-way valve is located between the pure water injection point and the second filter element 212, with its forward flow direction set from the second filter element 212 to the mixing confluence point. Its core function is to construct a one-way fluid barrier to prevent reverse fluid flow. When high-pressure pure water is injected into the first branch 41 for mixing, if the pressure on the pure water side is higher than the pressure on the fresh mineral water side, the second one-way valve immediately closes, blocking the backflow of pure water into the second filter element 212. This effectively prevents unintended backwashing of the second filter element 212 by high-purity water, avoiding abnormal precipitation of mineral components or damage to the filter material structure. Simultaneously, it maintains the stability of the ion concentration field inside the mineralized filter element, ensuring that the fresh mineral water quality parameters meet design standards. Furthermore, the second one-way valve also isolates the pressure fluctuations between the pure water path 40 and the upstream section of the fresh mineral water path 30, ensuring that each filter element operates within its rated pressure range and extending the service life of core components.

[0053] In one embodiment, please refer to Figures 2 to 6 The filtration water path 20 is also equipped with an inlet water quality detector 51 and a booster pump 53, which are located upstream of the third filter element 213. The water purification system also includes a control module, which is electrically connected to the inlet water quality detector 51 and the booster pump 53. The control module is configured to control the speed of the booster pump 53 according to the detection result of the inlet water quality detector 51 and the target water quality of the fresh mineral water effluent.

[0054] Specifically, when the inlet water quality detector 51 detects that the raw water quality has deteriorated, the control module increases the speed of the booster pump 53 to increase the reverse osmosis membrane inlet pressure, ensuring the desalination rate and pure water flux; when the raw water quality is good or only fresh mineral water is needed, the speed of the booster pump 53 is reduced.

[0055] This enables adaptive pressure control based on raw water quality and water demand, avoiding the energy waste and noise problems caused by the constant high-speed operation of the booster pump 53. It also reduces the mechanical load on the pump body and high-pressure pipelines, extending equipment lifespan. Furthermore, dynamic pressure regulation effectively addresses seasonal fluctuations in raw water quality, ensuring that the system can stably output fresh mineral water or sufficient pure water that meets target parameters under different influent conditions.

[0056] In one embodiment, please refer to Figure 3 and Figure 6 The pure water circuit 40 is also equipped with an outlet water quality detector 52, and the control module controls the speed of the booster pump 53 according to the detection result of the outlet water quality detector 52.

[0057] On the one hand, the water quality at the outlet of the third filter element 213 is monitored in real time by the effluent water quality detector 52, forming a closed-loop feedback control loop for the product water quality. When the effluent water quality is detected to be inconsistent with the target water quality requirements, the control module automatically increases the speed of the booster pump 53 and increases the pre-membrane operating pressure to improve the solvent permeation rate and solute rejection rate until the product water quality returns to the standard. Conversely, if the product water quality is excellent and the flux is excessive, the speed is appropriately reduced to optimize energy efficiency.

[0058] On the other hand, an adaptive learning and error correction mechanism is introduced. The control module can continuously compare the deviation between the "target water quality setpoint" and the "actual value measured by the effluent water quality detector 52" and build an error model using historical data accumulation. Through algorithm analysis, the system can automatically identify and correct control deviations caused by factors such as sensor drift and water temperature changes, thereby continuously optimizing the adjustment strategy of the booster pump 53 speed and improving control accuracy and response speed.

[0059] This eliminates deviations in product water quality caused by fluctuations in raw water, changes in water temperature, or degradation of reverse osmosis membrane performance, ensuring a continuous and stable output of high-quality pure water. This adaptive control strategy, based on real-time water quality feedback, maximizes the operating efficiency of the reverse osmosis membrane and achieves optimal system energy consumption while ensuring water quality meets standards, thus avoiding instability in effluent quality caused by fluctuations in pure water quality.

[0060] In one embodiment, both the influent water quality detector 51 and the effluent water quality detector 52 include a TDS detection module.

[0061] In this way, the water purification system can use the influent TDS value as a feedforward signal, combined with the target mixed water TDS value, to dynamically calculate the required mixing ratio of pure water and fresh mineral water. This allows for adjustment of the booster pump 53's speed, ensuring the output fresh mineral water's TDS value meets user needs. Simultaneously, by detecting the output TDS value, closed-loop control, adaptive learning, and error correction are implemented to continuously optimize the booster pump 53's speed adjustment strategy, improving control accuracy and response speed. This ensures that even with fluctuations in raw water quality, the final output TDS value remains highly stable within the user-set range. This not only guarantees a high degree of consistency in taste and mineral concentration, enhancing the user's drinking experience, but also achieves data-driven intelligent water quality management, enabling the system to adapt to water quality differences and consistently output high-quality drinking water that meets the user's personalized needs.

[0062] In other embodiments, the inlet water quality detector 51 or the outlet water quality detector 52 may also include a conductivity detection module.

[0063] In one embodiment, please refer to Figures 1 to 6 The filtration water path 20 includes a main path, a first filtration branch 201, and a second filtration branch 202. The first filter element 211 is located in the main path, the second filter element 212 is located in the first filtration branch 201, and the third filter element 213 is located in the second filtration branch 202. The inlet end of the fresh mineral water path 30 is connected to the outlet end of the first filtration branch 201, and the inlet end of the pure water path 40 is connected to the outlet end of the second filtration branch 202.

[0064] Specifically, after the raw water flows through the main channel and undergoes preliminary pretreatment via the first filter element 211, it is distributed at the branch point to two independent parallel branches: the first filtration branch 201 is dedicated to mineralization treatment, and the water flows through the second filter element 212 to form fresh mineral water; the second filtration branch 202 is dedicated to deep purification, and the water flows through the third filter element 213 to form pure water. The two branches are completely decoupled in terms of hydraulic pressure and flow direction, and do not interfere with each other.

[0065] In this way, when users take fresh mineral water, they can activate only the first filtration branch 201, without consuming the lifespan of the third filter element 213 or generating wastewater; when taking pure water, the second filtration branch 202 is activated independently. This architecture maximizes water resource utilization, significantly reduces the cumulative load on the filter elements, and facilitates pressure optimization and flow control for the two branches separately, improving the overall operating efficiency and reliability of the system.

[0066] In one embodiment, please refer to Figure 6 The second filtration branch 202 also has a third control valve 63 installed upstream of the third filter element 213.

[0067] Specifically, the third control valve 63 is installed in series in the second filtration branch 202, at the front end of the inlet side of the third filter element 213. As an independent switch for the pure water branch, it is controlled by the system control module and can cut off the water source to the reverse osmosis filter element independently without affecting the normal water supply of the first filtration branch 201 (fresh mineral water line 30).

[0068] This provides a flexible maintenance isolation and safety protection mechanism. When it is necessary to replace the third filter element 213, clean the pipeline, or perform maintenance on the pure water branch, only the third control valve 63 needs to be closed, without shutting off the entire unit's water inlet, ensuring the continuity of other household water use points (such as the fresh mineral water supply). In addition, when the system is idle for a long time, closing this valve can keep the reverse osmosis membrane in a static pressure-maintaining state, reducing unnecessary water hammer impact and water waste, and extending the membrane element's lifespan.

[0069] Furthermore, the third control valve 63 may also have a slow-opening and slow-closing function, which can suppress the water hammer effect at the moment of start-up and stop by linearly adjusting the opening degree, thus protecting the reverse osmosis membrane housing and connecting parts; or, the third control valve 63 may integrate a flow limiting function to prevent the membrane flux from exceeding the standard due to excessive inlet water pressure.

[0070] In one embodiment, please refer to Figure 4 The water purification system includes a first filtration device 210, in which the first filter element 211 and the second filter element 212 are integrated. Specifically, the first filtration device 210 is configured as a two-inlet, two-outlet type, forming two independent chambers for housing the first filter element 211 and the second filter element 212, thereby achieving the integration of the first filter element 211 and the second filter element 212. This greatly simplifies pipe connections, reduces the number of external joints, thereby reducing the risk of leakage and improving the overall sealing performance. Furthermore, it allows for centralized inspection and replacement of the first filter element 211 and the second filter element 212, 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.

[0071] In one embodiment, please refer to Figure 5 and Figure 6The first filtration branch 201 is also equipped with a fourth filter element 214, which is located upstream of the second filter element 212. Specifically, the fourth filter element 214 is typically configured as high-precision PP cotton, compressed activated carbon, or antibacterial material. Its function is to further remove fine particles, off-colors and odors, residual chlorine, and organic pollutants, ensuring that the water entering the second filter element 212 is highly pure. In this way, a multi-level barrier can be constructed to protect the second filter element 212. Through pre-deep adsorption, large particulate impurities are prevented from clogging the micropores of the mineralizing material, and residual chlorine is avoided from oxidizing and destroying the mineralized active ingredients, thereby significantly extending the service life of the second filter element 212. At the same time, the optimized influent water quality can improve the taste purity of the final fresh mineral water, eliminate odor interference, and ensure that the sweet taste of mineral elements is perfectly presented.

[0072] In one embodiment, please refer to Figure 5 and Figure 6 The water purification system includes a second filtration device 220, in which the first filter element 211 and the fourth filter element 214 are integrated. Specifically, the second filtration device 220 is configured as a two-inlet, two-outlet system, forming two independent chambers for housing the first filter element 211 and the fourth filter element 214, thereby achieving the integration of the first filter element 211 and the fourth filter element 214. This simplifies pipe connections, reduces the number of external joints, thereby reducing the risk of leakage and improving the overall sealing performance. Furthermore, it allows for centralized inspection and replacement of the first filter element 211 and the fourth filter element 214, reducing operational difficulty and maintenance costs.

[0073] In one embodiment, please refer to Figure 6 The second filtration branch 202 is also provided with a fifth filter element 215, which is located downstream of the third filter element 213. The water purification system includes a third filtration device 230, and the fifth filter element 215 and the second filter element 212 are integrated into the third filtration device 230.

[0074] After deep purification by the third filter element 213, the purified water flows through the fifth filter element 215 for final adsorption treatment. This aims to adsorb 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 fifth filter element 215 can be configured with activated carbon, or other functional filtration modules can be added to it.

[0075] Based on this, the third filtration device 230 is configured as a two-inlet, two-outlet type, forming two independent chambers for housing the second filter element 212 and the fifth filter element 215 respectively, thereby achieving the integration of the second filter element 212 and the fifth filter element 215. This further simplifies pipeline connections, reduces the number of external joints, thereby reducing the risk of leakage and improving the overall sealing performance of the unit. Furthermore, it allows for centralized inspection and replacement of the second filter element 212 and the fifth filter element 215, reducing operational difficulty and maintenance costs.

[0076] In other embodiments, the second filter element 212 and the fifth filter element 215 may also be provided independently.

[0077] In one embodiment, please refer to Figures 7 to 9 The water purification system includes a fourth filtration device 240, which includes a mounting housing 100. The mounting housing 100 has a mounting cavity 101 and multiple inlets and outlets communicating with the mounting cavity 101. The multiple inlets and outlets include a first water inlet 102, a second water inlet 103, a first drain outlet 104, a second drain outlet 105, and a third drain outlet 106. Multiple filter elements are disposed in the mounting cavity 101. The multiple filter elements include a pre-filter element 250 and a fifth filter element 215. The pre-filter element 250 includes a first filter element 211 and a second filter element 212 distributed along a first direction.

[0078] The water inlet side of the first filter element 211 is connected to the water inlet channel 10 through the first water inlet 102, the water outlet side of the first filter element 211 is connected to the water inlet side of the third filter element 213 through the first drain outlet 104, the water outlet side of the second filter element 212 is connected to the water inlet end of the fresh mineral water channel 30 through the second drain outlet 105, the water inlet side of the fifth filter element 215 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 fifth filter element 215 is connected to the water inlet end of the pure water channel 40 through the third drain outlet 106.

[0079] In this way, the first filter element 211, the second filter element 212 and the fifth filter element 215 can be integrated into the fourth filter device 240, which simplifies the pipeline connection, reduces the number of external joints, 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] Optionally, the fifth filter element 215 may be a post-activated carbon filter or a taste-improving filter, whose 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 filtered by the third filter element 213 can be sent to the fifth filter element 215 for further treatment to improve the taste and inhibit bacterial regeneration. Finally, the water treated by the fifth filter element 215 can be directly sent to the water outlet device. The water outlet device can include various types, such as a faucet (including mechanical and smart faucets), a coffee machine, or a water dispenser.

[0085] 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 fifth filter element 215 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.

[0086] The technical solution of the present invention integrates the first filter element 211, the second filter element 212 and the fifth filter element 215 into a fourth filtration device 240, so that the fourth filtration device 240 can supply pure water and fresh mineral water rich in minerals at the same time, effectively meeting the diversified usage 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.

[0087] 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.

[0088] For example, please see Figures 7 to 9In 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 fifth filter element 215 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.

[0089] Please see Figures 7 to 9 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.

[0090] 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.

[0091] 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.

[0092] Please see Figures 7 to 9 Optionally, in some embodiments, the pre-filter 250 and the fifth filter 215 are distributed along a second direction, which intersects with the first direction. Specifically, in this embodiment, the pre-filter 250 and the fifth filter 215 are distributed along the axial direction of the fourth filtration device 240.

[0093] Please refer to Figure 7 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 fourth filter device 240 is approximately cylindrical, the first direction is also designated as the radial direction of the fourth filter device 240, i.e., the direction radiating outward from the center of the fourth filter device 240, and the second direction is designated as the axial direction of the fourth filter device 240, i.e., the direction extending along the central axis of the fourth filter device 240. Using this arrangement, while maintaining a constant radial dimension of the fourth filter device 240, by arranging the pre-filter element 250 and the fifth filter element 215 along the axial direction of the fourth filter device 240, the first filter element 211 and the second filter element 212 can have a larger effective filtration area, thereby significantly improving the water treatment system's water production efficiency and filtration effect.

[0094] Optionally, in embodiments where the housing 300 includes a housing 310 and a cover 320, the installation position of the pre-filter 250 is flexible; it can be positioned at one end of the mounting cavity 101 near the cover 320 (e.g., Figure 8 (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 7 (See the illustrated embodiment). In other words, the pre-filter 250 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.

[0095] Of course, in other possible embodiments, the pre-filter 250 and the fifth filter 215 can also be distributed along the first direction, i.e., the radial direction. For example, the fifth filter 215 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 fifth filter 215, 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.

[0096] Please see Figure 7 and Figure 8 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.

[0097] Please see Figure 7 and Figure 9 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 arranged around the outer periphery of the fifth filter element 215; multiple inlets and outlets (including each water inlet and drain 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.

[0098] That is, in the specific implementation of this embodiment, the fifth filter element 215 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 that has undergone final filtration by the fifth filter element 215 to the third drain outlet 106. Through the above integrated design, not only is the rational 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 fourth filtration device 240, thereby adapting to the dual requirements of filter element volume and performance in more application scenarios.

[0099] Please see Figure 7 and Figure 9 Optionally, in some embodiments, the fifth filter element 215 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 fifth filter element 215. Specifically, in this embodiment, pure water flows through the second inlet channel 306 to the outer periphery of the fifth filter element 215, then flows radially along the fourth filtration device 240 through the fifth filter element 215 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 fifth filter element 215, thereby helping to improve filtration efficiency and overall performance. Of course, in other possible embodiments, the fifth filter element 215 can also adopt different structural designs, such as a flat plate structure, to meet different application requirements or space constraints.

[0100] Please see Figure 7 and Figure 9Optionally, 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 fifth filter element 215. 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 rate 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 fifth filter element 215. Such a configuration can also meet different filtration needs and performance optimization goals.

[0101] Please see Figure 7 and Figure 9 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 fifth filter element 215, 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.

[0102] Please see Figure 7 and Figure 9Optionally, 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 fifth filter element 215 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 fifth filter element 215, and then the water flows radially through the porous structure of the entire fifth filter element 215 under pressure, and finally enters the inner cavity of the fifth filter element 215. 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 media of the fifth filter element 215, thereby effectively removing any trace impurities that may remain and improving the purity and safety of the final effluent.

[0103] 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.

[0104] Please see Figure 7 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.

[0105] 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.

[0106] Please see Figures 7 to 9 Optionally, 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 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 fourth filter device 240 in the water purification system can be effectively simplified, assembly efficiency can be significantly improved, and the fourth filter device 240 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.

[0107] Please see Figure 7 and Figure 8 To further improve the ease of assembly and user-friendliness of the fourth filter device 240, 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.

[0108] Please see Figure 7 and Figure 8Optionally, 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.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] The above description is merely an exemplary embodiment of the present invention and is not intended to 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. The fresh mineral water channel has its inlet end connected to the outlet end of the second filter element, and its outlet end connected to the fresh mineral water user end. as well as The pure water circuit has an inlet end connected to the outlet end of the third filter element, and the pure water circuit can be connected to the fresh mineral water outlet end, so that the fresh mineral water outlet end can form a mixed outlet of fresh mineral water and pure water.

2. The water purification system as described in claim 1, characterized in that, The water purification system also includes a faucet, and the fresh mineral water path and the pure water path are both connected to the faucet.

3. The water purification system as described in claim 2, characterized in that, The faucet is configured as a mixer tap.

4. The water purification system as described in claim 2, characterized in that, The faucet can switch between the fresh mineral water supply end and the pure water supply end.

5. The water purification system as described in claim 1, characterized in that, The pure water circuit branches into a first branch between the inlet and outlet ends. The outlet end of the first branch is connected to the fresh mineral water circuit. The first branch is equipped with a first one-way valve.

6. The water purification system as described in claim 5, characterized in that, The pure water circuit is also equipped with a first control valve, which is located upstream of the branch position of the first branch.

7. The water purification system as described in claim 5, characterized in that, The fresh mineral water circuit is equipped with a second one-way valve, which is located upstream of the connection point of the first branch. The fresh mineral water circuit is also equipped with a second control valve, which is located downstream of the connection point of the first branch.

8. The water purification system as described in claim 1, characterized in that, The filtration water path is also equipped with an inlet water quality detector and a booster pump, which are located upstream of the third filter element; The water purification system also includes a control module, which is electrically connected to the inlet water quality detector and the booster pump. The control module is configured to control the speed of the booster pump based on the detection results of the inlet water quality detector and the target water quality of the fresh mineral water effluent.

9. The water purification system as described in claim 8, characterized in that, The pure water circuit is also equipped with an outlet water quality detector, and the control module controls the speed of the booster pump based on the detection result of the outlet water quality detector.

10. The water purification system as described in claim 9, characterized in that, Both the influent water quality detector and the effluent water quality detector include a TDS detection module.

11. The water purification system as described in claim 1, characterized in that, The filtration water circuit includes a main circuit, a first filtration branch circuit, and a second filtration branch circuit. The first filter element is located in the main circuit, the second filter element is located in the first filtration branch circuit, and the third filter element is located in the second filtration branch circuit. The inlet end of the fresh mineral water circuit is connected to the outlet end of the first filtration branch circuit, and the inlet end of the pure water circuit is connected to the outlet end of the second filtration branch circuit.

12. The water purification system as described in claim 11, characterized in that, The second filtration branch also has a third control valve installed upstream of the third filter element.

13. The water purification system as described in claim 11, characterized in that, The water purification system includes a first filtration device, wherein the first filter element and the second filter element are integrated into the first filtration device.

14. The water purification system as described in claim 11, characterized in that, The first filtration branch is also provided with a fourth filter element, which is located upstream of the second filter element.

15. The water purification system as described in claim 14, characterized in that, The water purification system includes a second filtration device, in which the first filter element and the fourth filter element are integrated.

16. The water purification system as described in claim 11, characterized in that, The second filtration branch is also provided with a fifth filter element, which is located downstream of the third filter element. The water purification system includes a third filtration device, and the fifth filter element and the second filter element are integrated into the third filtration device.

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