Central water purifier with cleaning function

Abstract

The utility model discloses a central water purifier with cleaning function, including central water purifier body, and the body contains casing, inlet pipeline, filter unit, purification water pipeline, sewage pipeline, waterway control assembly, sensing assembly and control assembly. Filter unit contains at least one filter core, and each filter core is equipped with independent three -way valve, and three -way valve interface is connected inlet pipeline, filter core, sewage pipeline respectively, sensing assembly contains double -pressure temperature integral sensor, and the state of inlet and filter unit output end is monitored, and the control panel linkage waterway control assembly and sensing assembly realize automatic switching water purification / cleaning mode. Add bypass assembly and deal with the emergency water supply of failure, and inlet pipeline, purification water pipeline, sewage pipeline all are equipped with double -interface adaptation installation, and the sewage pipeline multi -branch structure realizes positive and reverse flushing. The utility model solves the problem that the prior art is not completely cleaned, and the emergency capability is poor, prolongs filter core life, and improves water safety and installation flexibility.

Description

Technical Field

[0001] This utility model relates to the field of water purifier equipment, and in particular to a central water purifier with a cleaning function. Background Technology

[0002] As residents' quality of life improves, families are increasingly demanding higher quality drinking water and domestic water. Central water purifiers, as the core equipment for whole-house water purification, have been widely used in homes, apartments, and other settings.

[0003] Chinese patent publication CN215462262U discloses a timed flushing device for a large-bottle pre-filter central water purifier. This prior art achieves automatic filter cartridge flushing through a "timed and quantitative control device + switch valve," specifically including components such as a timer, control board, and flushing switch valve. It sets a fixed cycle to open the flushing channel and flush the activated carbon filter cartridge, thus solving to some extent the cumbersome operation problem of traditional manual flushing. However, it still has the following significant technical defects, making it difficult to meet users' needs for efficient, intelligent, and water-saving use: This existing technology uses a single on / off valve to control sewage discharge, which can only achieve simple forward flushing. That is, raw water flows in from the filter cartridge inlet and out from the outlet in a single path. It cannot perform reverse impact cleaning of impurities trapped deep in the filter cartridge, resulting in limited cleaning efficiency. At the same time, it does not have an independent purified water control valve. If the user's water supply is not manually shut off during the cleaning process, wastewater containing impurities can easily mix into the purified water pipeline, contaminating the purified water and affecting water safety.

[0004] To address the aforementioned issues, there is an urgent need to design a central water purifier that features cleaning, emergency water supply, and convenient maintenance, in order to overcome the shortcomings of existing technologies and meet users' demands for efficient, reliable, and low-cost water purification equipment. Utility Model Content

[0005] In view of the defects of the existing technology, the technical problem to be solved by this utility model is to provide a central water purifier with a cleaning function.

[0006] A central water purifier with a cleaning function includes a central water purifier body 100, the central water purifier body 100 comprising: Water inlet pipe 1 is used to supply the raw water to be purified. Filter unit 2 includes at least one filter element and is connected to water inlet pipe 1; Purified water pipe 3 is connected to the output end of filter unit 2 and is used to output purified water; Wastewater discharge pipe 4 is connected to filter unit 2 and is used to discharge wastewater generated during the cleaning process; The water circuit control component 5 includes a three-way valve, a purified water valve 52, and a drain valve 53. Each filter element is equipped with a three-way valve. The three ports of each three-way valve are respectively connected to the inlet pipe 1, the corresponding filter element, and the drain pipe 4 for switching the water flow direction. The purified water valve 52 is installed on the purified water pipe 3, and the drain valve 53 is installed on the drain pipe 4.

[0007] In some embodiments, the water inlet pipeline 1 includes a main water inlet pipeline 11 and a first water inlet branch pipeline 12 and a second water inlet branch pipeline 13 connected to the main water inlet pipeline 11 and disposed on the left and right sides respectively; the main water inlet pipeline 11 is provided with a first raw water inlet 14 and a second raw water inlet 15 on its left and right sides respectively; the filter unit 2 includes two first filter elements 21 and a second filter element 22 installed vertically side by side; wherein, the first filter element 21 is equipped with a first three-way valve 511 in the first water inlet branch pipeline 12, and the three ports of the first three-way valve 511 are respectively connected to the first raw water inlet 14, the first filter element 21, and the sewage discharge pipeline 4; the second filter element 22 is equipped with a second three-way valve 512 in the second water inlet branch pipeline 13, and the three ports of the second three-way valve 512 are respectively connected to the second raw water inlet 15, the second filter element 22, and the sewage discharge pipeline 4.

[0008] In some embodiments, the purified water pipeline 3 includes: a first purified water branch 31 connected to the first filter element 21, a second purified water branch 32 connected to the second filter element 22, a pure water confluence branch 33, and a pure water outlet main line 34; the pure water confluence branch 33 is connected to the first purified water branch 31 and the second purified water branch 32 respectively, and is used to collect the pure water from the two purified water branches and output it to the pure water outlet main line 34; the pure water outlet main line 34 is provided with a first pure water outlet 341 and a second pure water outlet 342 on its left and right sides respectively; the purified water valve 52 is provided on the pure water confluence branch 33.

[0009] In some embodiments, the first water purification branch 31 is provided with a first flow meter 311, and the second water purification branch 32 is provided with a second flow meter 321.

[0010] In some embodiments, the sewage discharge pipeline 4 includes: a first non-pure water branch 41 connected to the first filter element 21, a second non-pure water branch 42 connected to the second filter element 22, a first mixing branch 43, a sewage discharge main pipeline 44, a third non-pure water branch 45 connected to an interface of the first three-way valve 511, a fourth non-pure water branch 46 connected to an interface of the second three-way valve 512, and a second mixing branch 47; The first mixed branch 43 is connected to the first non-pure water branch 41 and the second non-pure water branch 42 respectively, and is used to collect the water flow from the two non-pure water branches and output it to the sewage drainage main 44. The second mixed branch 47 is connected to the third non-pure water branch 45 and the fourth non-pure water branch 46 respectively, and is used to collect the water flow from the two non-pure water branches and output it to the sewage drainage main 44 or the first mixed branch 43. The main sewage drainage channel 44 is provided with a first sewage outlet 441 and a second sewage outlet 442 on its left and right sides, respectively; the sewage discharge valve 53 is installed on the first mixing branch channel 43.

[0011] In some embodiments, the three-way valve, the purified water valve 52, and the drain valve 53 are all electric valves; The central water purifier body 100 also includes: The sensing component includes at least two integrated pressure and temperature sensors, which are respectively installed at the output ends of the water inlet pipe 1 and the filter unit 2. The control component 7 includes a control board 71, which is electrically connected to the water circuit control component 5 and the sensing component.

[0012] In some embodiments, the sensing component includes a first pressure and temperature integrated sensor 61 installed on the main water inlet 11 and a second pressure and temperature integrated sensor 62 installed on the main pure water outlet 34; the sensing component also includes a TDS sensor 63, which is disposed at the connection between the main pure water outlet 34 and the pure water confluence branch 33.

[0013] In some embodiments, the central water purifier body 100 further includes: The bypass assembly 8 includes a bypass pipe 81 and a bypass valve 82 for manual control installed on the bypass pipe 81. The two ends of the bypass pipe 81 are respectively connected to the inlet pipe 1 and the purified water pipe 3. The housing 101 is used to enclose the water inlet pipe 1, the top of the filter unit 2, the purified water pipe 3, the sewage discharge pipe 4, the water circuit control component 5, the sensing component, the control component 7, and the bypass component 8. The housing 101 adopts a split structure, including a main housing 1011 that cooperates with each other and a detachable top housing 1012 installed on the top of the main housing 1011. The purified water valve 52 and the drain valve 53 are installed at the top of the inside of the housing 101, both of which are below the top housing 1012.

[0014] In some embodiments, the central water purifier body 100 further includes: The filter element removal and installation wrench 9 is installed on the top of each filter element; the housing 101 is provided with a clearance opening 102 extending out of the housing 101 for the input end of the water inlet pipe 1, the output end of the purified water pipe 3, and the output end of the sewage discharge pipe 4.

[0015] 10. A central water purifier with cleaning function according to claim 8, characterized in that the control component 7 further includes a display control board 72, which is installed on the front side of the housing 101 and electrically connected to the control board 71.

[0016] In summary, the advantages of this utility model over the prior art are: 1. This design, which equips each filter element with an independent three-way valve and a dual mixing branch for sewage discharge, can achieve two cleaning modes: "forward flushing" and "reverse flushing". During purification, the three-way valve guides raw water into the filter element; during cleaning, the water path is switched so that the raw water impacts the impurities on the surface of the filter element and is discharged into the sewage pipe through the mixing branch.

[0017] 2. By adding a bypass component, when the equipment malfunctions (such as valve damage or filter replacement), the user can manually open the bypass valve to allow raw water to bypass the filter and be directly delivered to the purified water pipeline, avoiding water outages during maintenance. At the same time, the inlet water pipeline, purified water pipeline, and sewage discharge pipeline are all equipped with dual interfaces on both sides of the casing, which can be adapted to the pipeline installation direction of different households (left inlet right outlet / right inlet left outlet), reducing installation difficulty.

[0018] 3. This solution combines sensing components (integrated pressure and temperature sensors, and real-time monitoring by flow meters) to accurately determine cleaning timing, avoiding over-cleaning or under-cleaning, thus extending filter life and reducing filter replacement frequency and costs. Specifically, the sensing components use integrated pressure and temperature sensors to monitor inlet / outlet water status, preventing clogging and freezing; a TDS sensor to detect purified water purity, ensuring compliance; and dual flow meters to accumulate filter flow and predict lifespan. Furthermore, data from these sensors is transmitted to the control board in real-time, automatically switching operating modes. The control board also intuitively displays water quality and equipment status, allowing users to understand the operation without specialized knowledge.

[0019] 4. The water inlet pipeline, purified water pipeline, and sewage discharge pipeline in this project are designed independently. Through the coordinated control of three-way valves, purified water valves, and sewage discharge valves, the purified and clean water paths are strictly separated to avoid mixing of raw water and purified water. Moreover, the design of non-purified water branches and mixed branches ensures thorough sewage discharge with no impurities remaining, further guaranteeing the purification effect. Attached Figure Description

[0020] Figure 1 A 3D diagram of a central water purifier; Figure 2 This is an exploded view of a central water purifier. Figure 3 This is a schematic diagram of the water circuit during normal water production in a central water purifier. Figure 4 This is a schematic diagram of the water circuit during the forward flushing of a central water purifier. Figure 5 A schematic diagram of the water circuit when the first filter element of a central water purifier is backwashed. Figure 6 This is a schematic diagram of the water circuit when the second filter element of the central water purifier is backwashed. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Example 1 like Figures 1 to 6 As shown, a preferred embodiment of this utility model provides a central water purifier with a cleaning function, including a central water purifier body 100; the central water purifier body 100 includes: Housing 101; The central water purifier body 100 uses the housing 101 as a supporting frame to enclose various components, pipes or units. Water inlet pipe 1, installed on the casing 101, is used to supply raw water to be purified; The filter unit 2 includes at least one filter element connected to the water inlet pipe 1, the top of which is installed inside the housing 101; the top of the filter element is fixed to the mounting base inside the housing 101 by a threaded interface for easy disassembly. Purified water pipe 3 is installed on the housing 101 and connected to the output end of filter unit 2 for outputting purified water; Wastewater discharge pipe 4 is installed on the housing 101 and connected to the filter unit 2, used to discharge wastewater generated during the cleaning process; The water circuit control component 5 includes a three-way valve, a purified water valve 52, and a drain valve 53 installed inside the housing 101. Each filter element is equipped with a three-way valve, and the three ports of each three-way valve are respectively connected to the water inlet pipe 1, the corresponding filter element, and the wastewater discharge pipe 4 for switching the water flow direction. The purified water valve 52 is installed on the purified water pipe 3, and the drain valve 53 is installed on the wastewater discharge pipe 4.

[0022] In the aforementioned basic structure, the three-way valve, purified water valve 52, and drain valve 53 of the water circuit control component 5 can be manual valves. Manual water purification and cleaning can be achieved simply through the inlet pipe + filter unit + purified water pipe + drain pipe + manual water circuit control component, fulfilling the core function without relying on electricity: In water purification mode, manually open the three-way valve "inlet pipe 1 → filter element". The system operates by closing the drain valve 53 and opening the purified water valve 52. Raw water is filtered through the filter element and output from the purified water pipeline 3. In cleaning mode, manually switch the three-way valve to "inlet pipeline 1 → drain pipeline 4" (forward flushing to remove surface impurities) or "filter element → drain pipeline 4" (reverse flushing to remove deep impurities). Open the drain valve 53 and close the purified water valve 52; impurities are discharged with the wastewater. The system is simple in structure and easy to operate, suitable for scenarios without power or with low cost. This achieves manual cleaning and water purification without electricity, is simple in structure and low in cost, and is suitable for scenarios without power or with low cost, overcoming the limitations of existing technologies that are tied to automatic control.

[0023] like Figure 1 and Figure 2 As shown, the central water purifier body 100 also includes: The bypass assembly 8, installed inside the housing 101, includes a bypass pipe 81 and a manually controlled bypass valve 82 mounted on the bypass pipe 81. The two ends of the bypass pipe 81 are connected to the inlet water pipe 1 and the purified water pipe 3, respectively. Specifically, the bypass valve 82 is a manual ball valve, which can be manually opened / closed by the user. One end of the bypass pipe 81 is connected to the main inlet water line 11 of the inlet water line 1 via a tee connector, and the other end is connected to the main pure water outlet line 34 of the purified water pipe 3, forming an emergency channel of "inlet water line → bypass pipe → purified water line". Thus, when the filter element is clogged or the valve is damaged and requires repair, opening the bypass valve 82 allows raw water to bypass the filter unit 2 and be directly delivered to the user, meeting non-drinking needs such as washing and mopping. Furthermore, the bypass valve 82 is manually controlled, requiring no electricity, and can be used in emergencies even during power outages, improving equipment reliability. The bypass pipe 81 is independent of the main water line, avoiding interference with the normal purification process.

[0024] Example 2 Because existing technology relies on timers to trigger flushing at fixed intervals, it does not dynamically adjust based on the actual pollution level of the raw water and the clogging status of the filter element. When the raw water turbidity is low, fixed-cycle flushing leads to water waste; when the raw water turbidity suddenly increases (e.g., due to sediment mixing after pipeline repairs), untimely flushing can cause impurities to accumulate and harden inside the filter element, significantly shortening its lifespan. Furthermore, it lacks any water quality or pressure monitoring components, making it impossible to determine whether the flushing effect meets standards, potentially leading to ineffective flushing that doesn't completely remove impurities or excessive flushing that wastes water. Therefore, in practical implementation, the three-way valve, purified water valve 52, and drain valve 53 can be electric valves.

[0025] When the three-way valve, purified water valve 52, and drain valve 53 are electric valves, the central water purifier body 100 also includes: The sensing component includes at least two integrated pressure and temperature sensors, which are respectively installed at the output ends of the water inlet pipe 1 and the filter unit 2. The control component 7 includes a control board 71 installed inside the housing 101. The control board 71 is electrically connected to the water circuit control component 5 and the sensing component. Specifically, the control board 71 can be an STM32 series microcontroller, electrically connected to all valves and sensors via wires to receive signals and send commands. For example, the control board receives data from the sensor component and automatically controls the valve opening and closing and mode switching of the water circuit control component 5. For instance, in normal water purification mode, the control board 71 opens the purified water valve 52 and closes the drain valve 53.

[0026] As described above, the central water purifier with cleaning function in this case is configured with an inlet pipe 1, a filter unit 2, a purified water pipe 3, and a wastewater discharge pipe 4, enabling the central water purifier with cleaning function to purify water and discharge wastewater after rinsing the filter element. Through the setting of the sensing component, the water circuit control component 5, and the control component 7, this case can detect the blockage of the pipe or filter element through the sensing component, and control the water circuit control component 5 through the control component 7 to automatically switch between normal water inlet mode and rinsing mode. Specifically, the water circuit control component is equipped with an independent three-way valve for each filter element. Its three ports are connected to the inlet pipe 1, the corresponding filter element, and the wastewater discharge pipe 4, respectively, so as to flexibly switch between different modes by opening and closing different ports of the three-way valve. For example, in the water purification mode, the three-way valve opens the "inlet pipe → filter element" passage and closes the wastewater discharge to achieve the water purification function. In the cleaning mode, on the one hand, by switching to the "inlet pipe → wastewater discharge pipe" passage, a forward high-flow flush is achieved, so that the raw water impacts the impurities on the surface of the filter element. On the other hand, by switching to the "filter element → wastewater discharge pipe" passage, a reverse flush is achieved, so that the raw water flows back from the output end of the filter element to remove deep impurities, thereby significantly improving the cleaning efficiency. Furthermore, since the purified water valve 52 and the drain valve 53 of the water circuit control component 5 are connected in series on the purified water pipeline 1 and the drain pipeline 4 respectively, and with the independent control of the corresponding purified water valve 52 and drain valve 53, an interlocked structure is formed between the purified water and drain pipelines. During cleaning, the purified water output can be completely cut off, forming a design that isolates the purified water and sewage water circuits, avoiding sewage mixing and pollution, and ensuring water safety. By adding integrated pressure and temperature sensors to the inlet pipeline and the output end of the filter unit, the filter element clogging status can be determined by the pressure difference, and cleaning can be dynamically triggered by the control board 71; or warnings can be issued for pipeline damage caused by abnormal water pressure or low water temperature, so as to detect faults in a timely manner.

[0027] like Figure 3As shown, the water inlet pipeline 1 includes a main water inlet 11 and a first water inlet branch 12 and a second water inlet branch 13 connected to the main water inlet 11 and disposed on the left and right sides respectively; the main water inlet 11 is provided with a first raw water inlet 14 and a second raw water inlet 15 on the left and right sides of the housing 101 respectively; the filter unit 2 includes two first filter elements 21 and second filter elements 22 installed vertically side by side; wherein, the first filter element 21 is equipped with a first three-way valve 511 in the first water inlet branch 12, and the three ports of the first three-way valve 511 are respectively connected to the first raw water inlet 14, the first filter element 21, and the sewage discharge pipeline 4; the second filter element 22 is equipped with a second three-way valve 512 in the second water inlet branch 13, and the three ports of the second three-way valve 512 are respectively connected to the second raw water inlet 15, the second filter element 22, and the sewage discharge pipeline 4. In practice, the first three-way valve 511 and the second three-way valve 512 are of the same model and are connected to the control board 71 in parallel through wires to achieve synchronous or independent control.

[0028] As described above, this design utilizes a dual-filter system, with each filter forming a complete "inlet-filtration-outlet" pathway. These filters can operate independently, ensuring that when one filter requires cleaning or malfunctions, the other continues to supply water. This solves the problem of a single filter failure causing a complete water outage throughout the house, improving water supply reliability. Raw water inlets are located on both sides of the main inlet line, directly adapting to "left in, right out" or "right in, left out" pipe layouts in homes. No additional adapters are required during installation, reducing the risk of leaks and installation costs. The first and second inlet branches supply water to each filter separately, and with independent three-way valves, the other filter can continue operating normally while one is being cleaned / maintained. Furthermore, the dual filters are installed vertically side-by-side, with corresponding inlet branches and valves, forming a symmetrical and balanced internal structure, reducing water flow impact noise during operation. Moreover, the reserved design of dual water inlet branches allows for the increase of the number of filter elements without altering the main structure (e.g., to expand to a three-filter system, only a new three-way valve of the same model needs to be added to connect to the control board, solving the limitation of existing single-inlet technology which is difficult to expand, and meeting the upgrade needs when the family population increases or the water quality deteriorates).

[0029] Furthermore, such as Figure 3As shown, the purified water pipeline 3 includes: a first purified water branch 31 connected to the first filter element 21, a second purified water branch 32 connected to the second filter element 22, a pure water confluence branch 33, and a pure water outlet main line 34; the pure water confluence branch 33 is connected to the first purified water branch 31 and the second purified water branch 32 respectively, and is used to collect the pure water from the two purified water branches and output it to the pure water outlet main line 34; the pure water outlet main line 34 is provided with a first pure water outlet 341 and a second pure water outlet 342 on the left and right sides of the housing 101 respectively; the purified water valve 52 is installed on the pure water confluence branch 33. Thus, the purified water pipeline in this case connects to the dual filter cartridges through the first and second purified water branch lines respectively, ensuring that cleaning one filter cartridge does not affect the purified water output of the other filter cartridge; the pure water manifold branch line collects the purified water from both filter cartridges before outputting it, which can achieve flow superposition during peak water usage to meet the high flow demand of families using washing machines and water heaters simultaneously; the purified water valve is located on the manifold branch line and closes synchronously in cleaning mode, completely cutting off the purified water output, which completely eliminates the risk of sewage mixing compared to the existing technology's "no independent purified water valve" design; and the dual-interface design of the pure water outlet main line is adaptable to different water terminal installation locations, improving installation flexibility.

[0030] Furthermore, a first flow meter 311 is installed on the first water purification branch 31, and a second flow meter 321 is installed on the second water purification branch 32. In this way, the two flow meters collect the actual water flow of the dual filter cartridges, and the control board judges the actual water flow through the flow meters, which is more in line with actual use scenarios and can be adapted to different water quality scenarios; and the dual flow meters monitor independently, so users can replace only the failed filter cartridge without replacing all filter cartridges at the same time.

[0031] Furthermore, such as Figures 3-6 As shown, the sewage discharge pipeline 4 includes: a first non-pure water branch 41 connected to the first filter element 21, a second non-pure water branch 42 connected to the second filter element 22, a first mixing branch 43, a sewage discharge main pipeline 44, a third non-pure water branch 45 connected to one interface of the first three-way valve 511, a fourth non-pure water branch 46 connected to one interface of the second three-way valve 512, and a second mixing branch 47; The first mixed branch 43 is connected to the first non-pure water branch 41 and the second non-pure water branch 42 respectively, and is used to collect the water flow from the two non-pure water branches and output it to the sewage drainage main 44. The second mixed branch 47 is connected to the third non-pure water branch 45 and the fourth non-pure water branch 46 respectively, and is used to collect the water flow from the two non-pure water branches and output it to the sewage drainage main 44 or the first mixed branch 43. The main sewage drainage channel 44 is provided with a first sewage outlet 441 and a second sewage outlet 442 on the left and right sides of the casing 101, respectively; the sewage discharge valve 53 is provided on the first mixing branch channel 43.

[0032] In specific implementation, such as Figure 4 As shown, during forward flushing in cleaning mode, the first three-way valve 511 switches to the "inlet pipe → filter element" path, and the second three-way valve 512 works similarly. Raw water impacts impurities on the filter element surface, and these impurities flow with the water into the first non-pure water branch 41 / second non-pure water branch 42, then converge into the main sewage drainage line 44 via the first mixing branch 43 for discharge. Figure 5 and Figure 6 As shown, if deep cleaning is required, the reverse flushing mode can be switched. For example, the three-way valve can be switched to "inlet pipe → third non-clean water branch 45 / fourth non-clean water branch 46". The raw water reverse flushes the filter element, and the impurities flow into the drain pipe through the second mixing branch 47 to achieve thorough cleaning.

[0033] As described above, the first and second non-clean water branch lines receive forward flushing wastewater, while the third and fourth non-clean water branch lines receive reverse flushing wastewater. The two wastewater lines are discharged after flowing into the mixing branch line to avoid cross-contamination of impurities and ensure thorough sewage discharge. Wastewater outlets are provided on both sides of the main sewage drainage line, which can be connected to the sewers in different locations in the house (such as the bathroom and kitchen), making it highly adaptable. In addition, the sewage discharge valves are designed to facilitate precise control of the sewage discharge timing, and combined with pressure monitoring, the system stops once the cleaning standard is met.

[0034] Furthermore, such as Figure 3 As shown, the sensing component includes a first integrated pressure and temperature sensor 61 installed on the main inlet water line 11 and a second integrated pressure and temperature sensor 62 installed on the main outlet water line 34. The sensing component also includes a TDS sensor 63, which is located at the connection between the main outlet water line 34 and the pure water confluence branch line 33. Thus, the sensor component in this case enhances monitoring capabilities through the configuration of dual pressure and temperature sensors and a TDS sensor. Specifically, the first pressure and temperature sensor monitors the raw water status, and the second pressure and temperature sensor monitors the purified water status. Sensor data is fed back in real time, avoiding manual inspections and reducing the user's maintenance burden. The TDS sensor detects the purified water purity in real time, triggering an alarm when the TDS value exceeds the standard, avoiding water quality risks caused by the inability to judge the purification effect. Moreover, the TDS sensor is installed in the confluence pipeline, allowing simultaneous detection of the purification effect of two filter cartridges, eliminating the need for redundant configuration and simplifying the structure. Furthermore, all sensor data provides accurate input to the control board, making cleaning triggering and mode switching more intelligent, further reducing the equipment failure rate. In this way, comprehensive monitoring coverage of key nodes in the water circuit is achieved.

[0035] Furthermore, such as Figure 1 and Figure 2As shown, the central water purifier body 100 also includes: a filter element removal wrench 9, with the filter element removal wrench 9 installed on the top of each filter element; the housing 101 is provided with a clearance port 102 extending out of the housing 101 for the inlet end of the water supply pipe 1, the outlet end of the purified water pipe 3, and the outlet end of the wastewater pipe 4. Thus, by setting a dedicated filter element removal wrench 9, the problem of slippage during traditional filter element removal is solved, making operation easier and allowing even female users to complete the task independently; the clearance port 102 provides space for the pipes to extend, avoiding increased water flow resistance caused by pipe bends, while simplifying the installation process, allowing connection of external pipes without disassembling the housing, thus improving installation efficiency.

[0036] Furthermore, such as Figure 1 and Figure 2 As shown, the housing 101 adopts a split structure, including a main housing 1011 that cooperates with each other and a detachable top housing 1012 installed on top of the main housing 1011. The purified water valve 52 and the drain valve 53 are installed inside the top of the housing 101, both located below the top housing 1012. In specific implementation, the top housing 1012 is connected to the main housing 1011 by four self-tapping screws, which can be removed by the user with a Phillips screwdriver. The purified water valve 52 and the drain valve 53 are installed on top of the main housing 1011 by brackets, directly below the top housing 1012. After the top housing is removed, the valve's wiring terminals and interfaces are fully exposed, facilitating maintenance or replacement. Thus, this design only requires disassembling the top housing for operation, eliminating the need to disassemble the entire housing, shortening maintenance time; the valves are installed on top, away from the water lines, avoiding electrical faults caused by water leakage and improving equipment safety.

[0037] Furthermore, such as Figure 1 and Figure 2 As shown, the control component 7 also includes a display control board 72, which is mounted on the front side of the housing 101 and electrically connected to the control board 71. In practice, the display interface of the display control board 72 can display real-time TDS values, water temperature, the working status of water purification / cleaning / fault, filter lifespan, etc. This achieves visual interaction, lowers the user's barrier to entry, and allows users to easily monitor the equipment status through the display control board 72.

[0038] In summary, this utility model discloses a central water purifier with a cleaning function, comprising a central water purifier body, which includes a casing, an inlet pipe, a filter unit, a purified water pipe, a wastewater pipe, a water circuit control component, a sensing component, and a control component. The filter unit contains at least one filter element, each equipped with an independent three-way valve, with the three-way valve interfaces connected to the inlet pipe, the filter element, and the wastewater pipe respectively. The sensing component includes dual pressure and temperature integrated sensors to monitor the status of the inlet water and the output of the filter unit. The control board, in conjunction with the water circuit control component and the sensing component, automatically switches between purified water and cleaning modes. A bypass component is added to handle emergency water supply in case of failure. The inlet pipe, purified water pipe, and wastewater pipe are all equipped with dual-interface adapters, and the multi-branch structure of the wastewater pipe enables forward and reverse flushing. This utility model solves the problems of incomplete cleaning and poor emergency response capabilities in existing technologies, extends filter element life, and improves water safety and installation flexibility.

[0039] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents. .

Claims

1. A central water purifier with a cleaning function, comprising a central water purifier body (100), characterized in that, The central water purifier body (100) includes: Water inlet pipe (1) is used to supply the raw water to be purified; The filter unit (2) includes at least one filter element and is connected to the water inlet pipe (1); The purified water pipeline (3) is connected to the output end of the filter unit (2) for outputting purified pure water; Wastewater discharge pipe (4) is connected to filter unit (2) and is used to discharge wastewater generated during the cleaning process; Water circuit control component (5), the water circuit control component (5) includes a three-way valve, a purified water valve (52) and a drain valve (53). Each filter element is equipped with a three-way valve. The three ports of each three-way valve are respectively connected to the water inlet pipe (1), the corresponding filter element and the sewage discharge pipe (4) for switching the water flow direction. The purified water valve (52) is set on the purified water pipe (3) and the drain valve (53) is set on the sewage discharge pipe (4).

2. A central water purifier with cleaning function according to claim 1, characterized in that, The water inlet pipeline (1) includes a main water inlet pipeline (11) and a first water inlet branch pipeline (12) and a second water inlet branch pipeline (13) connected to the main water inlet pipeline (11) and located on the left and right sides respectively. The main water inlet pipeline (11) is provided with a first raw water inlet (14) and a second raw water inlet (15) on its left and right sides respectively. The filter unit (2) includes two first filter elements (21) and a second filter element (22) installed vertically side by side. The first filter element (21) is equipped with a first three-way valve (511) on the first water inlet branch pipeline (12). The three ports of the first three-way valve (511) are respectively connected to the first raw water inlet (14), the first filter element (21), and the sewage pipeline (4). The second filter element (22) is equipped with a second three-way valve (512) on the second water inlet branch pipeline (13). The three ports of the second three-way valve (512) are respectively connected to the second raw water inlet (15), the second filter element (22), and the sewage pipeline (4).

3. A central water purifier with cleaning function according to claim 2, characterized in that, The purified water pipeline (3) includes: a first purified water branch (31) connected to the first filter element (21), a second purified water branch (32) connected to the second filter element (22), a pure water confluence branch (33), and a pure water outlet main line (34); the pure water confluence branch (33) is connected to the first purified water branch (31) and the second purified water branch (32) respectively, and is used to collect the pure water from the two purified water branches and output it to the pure water outlet main line (34); the pure water outlet main line (34) is provided with a first pure water outlet (341) and a second pure water outlet (342) on its left and right sides respectively; the purified water valve (52) is set on the pure water confluence branch (33).

4. A central water purifier with cleaning function according to claim 3, characterized in that, The first water purification branch (31) is equipped with a first flow meter (311), and the second water purification branch (32) is equipped with a second flow meter (321).

5. A central water purifier with a cleaning function according to claim 2, 3, or 4, characterized in that, The sewage discharge pipeline (4) includes: a first non-pure water branch (41) connected to the first filter element (21), a second non-pure water branch (42) connected to the second filter element (22), a first mixed branch (43), a sewage discharge main pipeline (44), a third non-pure water branch (45) connected to one interface of the first three-way valve (511), a fourth non-pure water branch (46) connected to one interface of the second three-way valve (512), and a second mixed branch (47). The first mixed branch (43) is connected to the first non-pure water branch (41) and the second non-pure water branch (42) respectively, and is used to collect the water flow from the two non-pure water branches and output it to the main sewage drainage road (44). The second mixed branch (47) is connected to the third non-pure water branch (45) and the fourth non-pure water branch (46) respectively, and is used to collect the water flow from the two non-pure water branches and output it to the sewage drainage main (44) or the first mixed branch (43). The main sewage drainage road (44) is provided with a first sewage outlet (441) and a second sewage outlet (442) on its left and right sides respectively; the sewage discharge valve (53) is installed on the first mixed branch road (43).

6. A central water purifier with cleaning function according to claim 3, characterized in that, The three-way valve, the purified water valve (52), and the drain valve (53) are all electric valves; The central water purifier body (100) also includes: The sensing component includes at least two integrated pressure and temperature sensors, which are respectively installed at the output ends of the water inlet pipe (1) and the filter unit (2); The control component (7) includes a control board (71), which is electrically connected to the water circuit control component (5) and the sensing component respectively.

7. A central water purifier with cleaning function according to claim 6, characterized in that, The sensing component includes a first pressure and temperature integrated sensor (61) installed on the main water inlet (11) and a second pressure and temperature integrated sensor (62) installed on the main pure water outlet (34); the sensing component also includes a TDS sensor (63), which is located at the connection between the main pure water outlet (34) and the pure water confluence branch (33).

8. A central water purifier with a cleaning function according to claim 7, characterized in that, The central water purifier body (100) also includes: The bypass assembly (8) includes a bypass pipe (81) and a bypass valve (82) for manual control installed on the bypass pipe (81). The two ends of the bypass pipe (81) are respectively connected to the inlet pipe (1) and the purified water pipe (3). The housing (101) is used to enclose the water inlet pipe (1), the top of the filter unit (2), the purified water pipe (3), the sewage pipe (4), the water circuit control component (5), the sensing component, the control component (7), and the bypass component (8); The housing (101) adopts a split structure, including a main housing (1011) that cooperates with each other and a detachable top housing (1012) installed on the top of the main housing (1011). The purified water valve (52) and the drain valve (53) are installed at the top of the housing (101), both of which are located below the top housing (1012).

9. A central water purifier with a cleaning function according to claim 8, characterized in that, The central water purifier body (100) also includes: A filter element removal wrench (9) is installed on the top of each filter element; the housing (101) is provided with a clearance opening (102) extending out of the housing (101) for the input end of the water supply pipeline (1), the output end of the purified water pipeline (3), and the output end of the sewage discharge pipeline (4).

10. A central water purifier with a cleaning function according to claim 8, characterized in that, The control assembly (7) also includes a display control board (72), which is mounted on the front side of the housing (101) and electrically connected to the control board (71).

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