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 heating 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 second filter element is configured to be a first filter element, the third filter element is configured to be 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 fresh mineral water path is communicated with the water outlet side of the second filter element, the heating water path is provided with a heating device, and the water inlet end of the heating water path is communicated with the water outlet side of the third filter element. According to the technical scheme, the fresh mineral water way independent of the reverse osmosis filter element is provided, so that fresh mineral water which meets the drinking standard and is rich in mineral substances 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 provides a fresh mineral water path independent of the reverse osmosis filter, so as to provide users with fresh mineral water that meets drinking standards and is rich in minerals, thereby satisfying 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 side of the second filter element; and The heating water circuit is equipped with a heating device, and the inlet end of the heating water circuit is connected to the outlet side of the third filter element.

[0007] 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 heating water path.

[0008] In one embodiment, the outlet side of the fourth filter element is also connected to the inlet end of the fresh mineral water circuit.

[0009] In one embodiment, the water purification system further includes a first branch and a second branch. The outlet side of the fourth filter element is connected to the inlet end of the fresh mineral water path through the first branch. The inlet end of the second branch is connected to the first branch, and the outlet end of the second branch is connected to the filtration flow path between the second filter element and the third filter element.

[0010] In one embodiment, the water purification system further includes a pure water direct outlet branch, and the outlet side of the fourth filter element is also connected to the inlet end of the pure water direct outlet branch.

[0011] In one embodiment, the water purification system further includes a water outlet branch connected in parallel with the pure water direct outlet branch.

[0012] In one embodiment, the water purification system further includes a third branch, the inlet of which is connected to the outlet of the fourth filter element, the pure water direct outlet branch and the water outlet branch of the pipeline machine are connected to the outlet of the third branch, and the third branch is provided with a first one-way valve.

[0013] In one embodiment, the third branch is further provided with a flow meter and a first flow control valve.

[0014] In one embodiment, the water purification system further includes a faucet, and the outlet of the pure water direct outlet branch and the outlet of the heating water circuit are connected to the same faucet.

[0015] In one embodiment, the heating device is configured as a hot tank, which has an exhaust port.

[0016] In one embodiment, the water purification system further includes a faucet, the faucet having a vent, the water outlet of the heating water circuit being connected to the water outlet of the faucet, and the vent being connected to the vent.

[0017] In one embodiment, the water purification system further includes a fourth branch, the inlet of the fresh mineral water path being connected to the outlet of the second filter element through the fourth branch, and the fourth branch being equipped with a second flow control valve.

[0018] In one embodiment, the filtration water path is provided with a filtration device, the first filter element and the second filter element are integrated into the filtration device, and the water outlet side of the first filter element and the water inlet side of the second filter element are connected.

[0019] In one embodiment, the first filter element and the second filter element are sleeved together at intervals, and the water outlet side of the first filter element and the water inlet side of the second filter element are both 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 heating water circuit through the third water outlet.

[0021] In this invention, by connecting a second filter element with mineralization function and a third filter element with reverse osmosis function in parallel, the fresh mineral water path is independent of the flow path where the reverse osmosis filter element is located, thus effectively meeting the user's demand for fresh mineral water. Specifically, when a user needs fresh mineral water, raw water enters through the inlet water path, passes through the first filter element to remove large particulate impurities such as silt and residual chlorine, as well as some organic matter, and then flows directly into the second filter element in the parallel branch. During this process, the water does not undergo deep desalination treatment by the reverse osmosis membrane, thus retaining the natural beneficial mineral framework of calcium, magnesium, potassium, etc. in the raw water. The trace elements are further balanced or enhanced by mineralization materials, ultimately forming standard-compliant, drinkable, and mineral-rich fresh mineral water, which is then directly delivered to the user's end through the fresh mineral water path. This path 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.

[0022] Meanwhile, for applications requiring extremely high water purity, this water purification system also provides an independent heating circuit to heat the purified water. Specifically, raw water is pre-treated by the first filter cartridge before entering the third filter cartridge, where it undergoes deep filtration to remove bacteria, viruses, heavy metals, and inorganic salt ions, resulting in high-purity purified water. This purified water then enters the heating circuit, where it is processed by the heating device to output hot water at a suitable temperature. Because the heating source water is low-hardness reverse osmosis purified water, this design effectively avoids the scale problem that easily occurs when directly heating traditional tap water. This protects the lifespan of the heating device and ensures the safety and purity of the hot water for drinking, making it particularly suitable for scenarios such as preparing infant formula, brewing medicine, and high-end tea drinks.

[0023] 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, however, since the fresh mineral water path is completely independent of the third filter, the daily demand for washing, cooking, and direct drinking can be handled by the fresh mineral water path, with the reverse osmosis path only activated for specific needs. This diversion mechanism significantly reduces the cumulative water flow and workload of the third filter, thereby significantly extending its lifespan and reducing the frequency of filter replacements and maintenance costs for users. Attached Figure Description

[0024] 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.

[0025] 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 A schematic diagram of the structure of a filtration device for a water purification system provided by the present invention; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 for Figure 2 A magnified view of a section at point B.

[0026] 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; 40. Heated water circuit; 41. Heating device; 42. Exhaust port; 501. Pure water direct outlet branch; 502. Water outlet branch of pipeline machine; 51. First branch; 52. Second branch; 53. Third branch; 54. Fourth branch; 60. Faucet; 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.

[0027] 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

[0028] 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.

[0029] 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.

[0030] 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.

[0031] This invention proposes a water purification system.

[0032] 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. Fresh mineral water channel 30, wherein the inlet end of the fresh mineral water channel 30 is connected to the outlet side of the second filter element 212; and The heating water path 40 is equipped with a heating device 41, and the inlet end of the heating water path 40 is connected to the outlet side of the third filter element 213.

[0033] In this invention, by connecting the second filter element 212 (mineralization function) and the third filter element 213 (reverse osmosis function) in parallel, the fresh mineral water path 30 is independent of the flow path containing the reverse osmosis filter element, thus effectively meeting the user's demand for fresh mineral water. Specifically, when a user needs fresh mineral water, raw water enters through the inlet water path 10, passes through the first filter element 211 to remove large particulate impurities such as silt and residual chlorine, as well as some organic matter, and then flows directly into the second filter element 212 in the parallel branch. During this process, the water does not undergo deep desalination treatment by the reverse osmosis membrane, thus retaining the natural beneficial mineral framework of calcium, magnesium, potassium, etc. in the raw water. The trace elements are further balanced or enhanced by mineralization materials, ultimately forming standard-compliant, drinkable, and mineral-rich fresh mineral water, which is then directly delivered to the user's end through the fresh mineral water path 30. This path 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.

[0034] Meanwhile, for applications requiring extremely high water purity, this water purification system also provides an independent heating water path 40 to heat the purified water. Specifically, the raw water, after pretreatment by the first filter element 211, enters the third filter element 213, where it is deeply filtered to remove bacteria, viruses, heavy metals, and inorganic salt ions, forming high-purity purified water. This purified water can then enter the heating water path 40, and after being processed by the heating device 41, it outputs hot water at a suitable temperature. Because the heating source water is low-hardness reverse osmosis purified water, this design effectively avoids the scale problem that easily occurs when directly heating traditional tap water. This protects the service life of the heating device 41 and ensures the safety and purity of the hot water for drinking, making it particularly suitable for scenarios such as preparing infant formula, brewing medicine, and high-end tea drinks.

[0035] 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 reverse osmosis path 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.

[0036] In one embodiment, the filtration water path 20 is further provided with a fourth filter element 214. The inlet side of the fourth filter element 214 is connected to the outlet side of the third filter element 213, and the outlet side of the fourth filter element 214 is connected to the inlet end of the heating water path 40. The pure water, after deep purification by the third filter element 213, first flows through the fourth filter element 214 for final adsorption treatment to remove any possible residual trace odors and improve taste, before entering the heating water path 40. This ensures that the water entering the heating device 41 is not only pure and sterile but also has a crisp and sweet taste, effectively avoiding the generation of odors due to residual chlorine or organic matter in the water during the heating process, significantly improving the drinking experience of hot water. The fourth filter element 214 can be configured as activated carbon, or other functional filtration modules can be added to it.

[0037] In one embodiment, the outlet side of the fourth filter element 214 is also connected to the inlet end of the fresh mineral water circuit 30. This allows for more flexible water output from the fresh mineral water circuit 30; it can be either pure fresh mineral water or a mixture 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 applications requiring precise water quality control.

[0038] In one embodiment, please refer to Figure 1 The water purification system further includes a first branch 51 and a second branch 52. The outlet of the fourth filter element 214 is connected to the inlet of the fresh mineral water channel 30 via the first branch 51. The inlet of the second branch 52 is connected to the first branch 51, and the outlet of the second branch 52 is connected to the filtration flow path between the second filter element 212 and the third filter element 213. In this way, pure water can be reintroduced to the inlet of the third filter element 213 via the second branch 52, achieving a "zero stagnant water" function and improving the quality of drinking water.

[0039] 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 water is drawn again. This cup of water is called "stale water".

[0040] In this example, after the water purification system stops producing water, a portion of the newly produced pure water can be redirected back to the inlet side of the third filter element 213 via the second branch 52 to flush the third filter element 213. This pure water flows over the membrane surface, effectively displacing and diluting the high-concentration concentrate 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 reduced concentration difference greatly weakens the reverse osmosis driving force, effectively preventing the migration of concentrate to the pure water side. Therefore, regardless of the duration of the shutdown, the first cup of water dispensed when the user restarts the system will maintain a low TDS value.

[0041] The second branch 52 is equipped with a second one-way valve. When there is a certain pressure on the inlet side of the second one-way valve, the second one-way valve enables one-way flow from the inlet to the outlet of the second branch 52 and suppresses backflow. Furthermore, the second branch 52 is also equipped with a control valve to control the opening and closing of the second branch 52, thereby controlling 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.

[0042] In one embodiment, the water purification system further includes a pure water direct outlet branch 501, and the outlet side of the fourth filter element 214 is connected to the inlet end of the pure water direct outlet branch 501. Specifically, the raw water entering from the inlet flow path flows sequentially through the first filter element 211, the third filter element 213, the fourth filter element 214, and the pure water direct outlet branch 501, finally flowing to the water consumption end. In this way, unheated, room-temperature, high-purity drinking water can be provided through the pure water direct outlet branch 501, which can meet the user's immediate need for large-capacity, room-temperature pure water in scenarios such as cooking, washing vegetables, and directly drinking cold water. Since this branch does not pass through the heating device 41, there is no time delay waiting for heating, the water output speed is fast, and the energy waste of heating and then cooling water that does not need to be heated is avoided.

[0043] Among them, the pure water direct outlet branch 501 can be directly extended to the drinking water end, or connected to the refrigerator water inlet for making ice or providing cold drinking water, or connected to the coffee machine water inlet or dishwasher water inlet to realize the pure water supply for multiple devices in the whole house.

[0044] In one embodiment, the water purification system further includes a water dispenser outlet branch 502 connected in parallel with the pure water direct outlet branch 501. This water dispenser outlet branch 502 extends from the outlet of the fourth filter element 214 to areas such as the living room, bedroom, or office, and connects to the inlet of a wall-mounted or countertop water dispenser. This overcomes spatial limitations, allowing users to access high-quality pure water filtered through four stages anytime, anywhere in their 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 501 to connect to a smart water dispenser with heating or cooling functions, or to serve as a common water supply source for multiple water dispensers in commercial settings.

[0046] In one embodiment, the water purification system further includes a third branch 53, the inlet of which is connected to the outlet of the fourth filter element 214. The pure water direct outlet branch 501 and the water outlet branch 502 of the water dispenser are connected to the outlet of the third branch 53. The third branch 53 is equipped with a first one-way valve. It is understood that the first one-way valve should be configured to achieve unidirectional flow from the inlet to the outlet of the third branch 53 when the pressure on its inlet side meets the requirements, thus suppressing backflow. In this way, the mechanical characteristics of the first one-way valve can be used to strictly prevent water from external pipelines (such as the water tank or pressure vessel inside the water dispenser) from flowing back into the filter water path 20 when the system is stopped or the pressure fluctuates. This not only avoids the risk of secondary pollution caused by stagnant water backflow but also prevents external high pressure from damaging the post-filter structure, ensuring the unidirectional stability of the pure water path pressure. In other embodiments, an electric shut-off valve can also be installed in the third branch 53 to work with the control system to actively cut off the pure water output when leakage is detected or the water has not been used for a long time, providing a higher level of safety protection.

[0047] In one embodiment, the third branch 53 is further provided with a flow meter and a first flow control valve.

[0048] Specifically, the first flow control valve can be configured as a regulating valve to adaptively adjust the valve opening according to a preset program or user instructions, or it can be configured as a flow limiting valve to control the flow of the third branch 53 so that the outlet water of the room temperature pure water is not affected by the inlet water pressure. The flow meter is used to monitor the flow of the third branch 53 in real time to ensure the flow stabilization effect.

[0049] Thus, regardless of the inlet water pressure or whether the user draws room temperature water alone or simultaneously with hot water, the third branch 53 can output a constant water flow. This not only improves the comfort of water intake but also avoids the inconvenience caused by excessive water flow splashing or insufficient flow waiting, especially in scenarios requiring measured water dispensing, ensuring accurate metering.

[0050] In one embodiment, the water purification system further includes a faucet 60, with the outlet of the pure water direct outlet branch 501 and the outlet of the heated water circuit 40 connected to the same faucet 60. Thus, by integrating both room temperature pure water and heated pure water into the same faucet 60, the layout of the water purification system is greatly simplified, eliminating the need for multiple faucets 60 to meet diverse drinking water needs and improving space utilization.

[0051] Users can freely choose to output room temperature pure water or heated pure water through single handle switching, dual button control, or touch panel. Furthermore, the faucet 60 is configured as a mixing faucet 60, with at least two independent water outlet paths. One path connects to the outlet of the pure water direct outlet branch 501, and the other connects to the outlet of the heated water circuit 40. The two water flows remain physically isolated before converging at the faucet 60 outlet, and only flow out at the final outlet according to user instructions, either individually or in a specific ratio, ensuring that the final water temperature meets the user's requirements.

[0052] In one embodiment, the heating device 41 is configured as a heat tank, which is equipped with an exhaust port 42. As a heat storage heating element, the heat tank contains a heating inner tank and a temperature control probe, capable of heating incoming pure water to a set temperature and maintaining that temperature. The exhaust port 42 is typically located at the top of the heat tank and is connected to the outside atmosphere or a specific collection device via a pipe or valve. When cold water enters the heat tank and expands due to heat, or when water boils and generates steam, the internal pressure rises. Excess gas and water vapor can be discharged through the exhaust port 42 to maintain pressure balance within the tank. This effectively prevents the heat tank from deforming or even bursting due to excessive internal pressure, ensuring the stability and safety of the heating process. Simultaneously, timely steam discharge avoids "false boiling," ensuring the accuracy of the outlet water temperature and preventing difficulties in water absorption or abnormal pipe noise caused by negative pressure after heating stops. In other embodiments, the heating device 41 can also be configured as an instantaneous heating element, such as a thick-film heating tube.

[0053] In one embodiment, the water purification system further includes a faucet 60, which has an air outlet. The water outlet of the heating water circuit 40 is connected to the water outlet of the faucet 60, and the air vent 42 is connected to the air outlet.

[0054] It is understandable that the heating tank is installed inside the cabinet. The steam generated by the heating tank can be guided from the exhaust port 42 through the relevant pipes to the faucet 60, and finally discharged from the steam outlet of the faucet 60. This can prevent high temperature steam from accumulating inside the sealed cabinet, effectively preventing the cabinet board from becoming moldy and deformed due to long-term moisture, and also preventing the metal hardware inside the cabinet from rusting and corroding, thus extending the life of the furniture.

[0055] In other embodiments, the exhaust port 42 may also be connected to a dedicated exhaust duct for the building.

[0056] In one embodiment, the water purification system further includes a fourth branch 54, through which the inlet of the fresh mineral water path 30 is connected to the outlet of the second filter element 212. The fourth branch 54 is equipped with a second flow control valve. Thus, the proportion of water flowing through the second filter element 212 can be dynamically adjusted according to the user-set mineral concentration or TDS value, achieving precise control of the mineral content of the fresh mineral water.

[0057] In one embodiment, please refer to Figure 1 and Figure 2 The water filtration path 20 is provided with a filtration device 210, and the first filter element 211 and the second filter element 212 are 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.

[0058] 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.

[0059] Specifically, the first filter element 211 and the second filter element 212 are sleeved together at intervals, and the water outlet side of the first filter element 211 and the water inlet side of the second filter element 212 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.

[0060] Furthermore, 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 drain outlet 106 that connect 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 heating water circuit 40 through the third drain outlet 106.

[0061] 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.

[0062] In one embodiment, please refer to Figures 2 to 4 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] For example, please see Figures 2 to 4In 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.

[0073] Please see Figures 2 to 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.

[0074] 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.

[0075] 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.

[0076] Please see Figures 2 to 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.

[0077] Please refer to Figure 2 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.

[0078] 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 3 (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 2 (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.

[0079] 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.

[0080] Please see Figure 2 and Figure 3 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.

[0081] Please see Figure 2 and Figure 4 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.

[0082] 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.

[0083] Please see Figure 2 and Figure 4 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.

[0084] Please see Figure 2 and Figure 4 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.

[0085] Please see Figure 2 and Figure 4 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.

[0086] Please see Figure 2 and Figure 4 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.

[0087] 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.

[0088] Please see Figure 2 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.

[0089] 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.

[0090] Please see Figures 2 to 4Optionally, 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.

[0091] Please see Figure 2 and Figure 3 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.

[0092] Please see Figure 2 and Figure 3 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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 is connected to the outlet side of the second filter element. as well as The heating water circuit is equipped with a heating device, and the inlet end of the heating water circuit is connected to the outlet side of the third filter element.

2. 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 heating water path.

3. The water purification system as described in claim 2, characterized in that, The outlet side of the fourth filter element is also connected to the inlet end of the fresh mineral water circuit.

4. The water purification system as described in claim 3, characterized in that, The water purification system further includes a first branch and a second branch. The outlet of the fourth filter element is connected to the inlet of the fresh mineral water path through the first branch. The inlet of the second branch is connected to the first branch, and the outlet of the second branch is connected to the filtration flow path between the second filter element and the third filter element.

5. The water purification system as described in claim 2, characterized in that, The water purification system also has a pure water direct outlet branch, and the outlet side of the fourth filter element is connected to the inlet end of the pure water direct outlet branch.

6. The water purification system as described in claim 5, characterized in that, The water purification system also has a pipeline machine outlet branch connected in parallel with the pure water direct outlet branch.

7. The water purification system as described in claim 6, characterized in that, The water purification system also includes a third branch, the inlet of which is connected to the outlet of the fourth filter element. The pure water direct outlet branch and the water outlet branch of the pipeline machine are connected to the outlet of the third branch, and the third branch is equipped with a first one-way valve.

8. The water purification system as described in claim 7, characterized in that, The third branch is also equipped with a flow meter and a first flow control valve.

9. The water purification system as described in claim 5, characterized in that, The water purification system also includes a faucet, and the outlet of the pure water direct outlet branch and the outlet of the heating water circuit are connected to the same faucet.

10. The water purification system as described in claim 1, characterized in that, The heating device is configured as a hot tank, and the hot tank is provided with an exhaust port.

11. The water purification system as described in claim 10, characterized in that, The water purification system also includes a faucet, which has an air outlet. The water outlet of the heating water circuit is connected to the water outlet of the faucet, and the air vent is connected to the air outlet.

12. The water purification system as described in claim 1, characterized in that, The water purification system also includes a fourth branch, through which the inlet of the fresh mineral water path is connected to the outlet of the second filter element, and the fourth branch is equipped with a second flow control valve.

13. The water purification system as described in claim 1, characterized in that, The filtration water path is equipped with a filtration device, and the first filter element and the second filter element are 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.

14. The water purification system as described in claim 13, characterized in that, The first filter element and the second filter element are sleeved together at intervals, and the water outlet side of the first filter element and the water inlet side of the second filter element 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 heating water circuit through the third water outlet.

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