Purified water dispenser

Abstract

The utility model discloses a purified water dispenser which comprises a water softening system, a water purifying system and a mineral water pipeline, and the water softening system is communicated with a raw water inlet; the water purification system comprises a front filter element and a reverse osmosis filter element which are sequentially arranged in the water path direction, and the front filter element is communicated with a first soft water outlet channel of the water softening system or the raw water inlet; the mineral water pipeline is communicated with the water outlet end of the front filter element and the water outlet end of the reverse osmosis filter element and used for mixing water filtered by the front filter element and pure water filtered by the reverse osmosis filter element into mineral water, and the mineral water with the stable TDS value can be output.

Description

Technical Field

[0001] This utility model relates to the field of drinking water device technology, and in particular to a water purifier. Background Technology

[0002] In related technologies, the TDS value of mineral water output by water purifiers is easily affected by fluctuations in the water source, resulting in unstable mineral content and substandard water quality. Utility Model Content

[0003] This application provides a water purifier that can output mineral water with a stable TDS value.

[0004] This application provides a water purifier, including:

[0005] The soft water system is connected to the raw water inlet;

[0006] A water purification system includes a pre-filter and a reverse osmosis filter arranged sequentially in the water path direction, wherein the pre-filter is connected to the first soft water outlet channel of the soft water system or the raw water inlet; and

[0007] The mineral water pipeline connects the outlet of the pre-filter and the outlet of the reverse osmosis filter, and is used to mix the water filtered by the pre-filter with the pure water filtered by the reverse osmosis filter to form mineral water.

[0008] In some embodiments, the mineral water pipeline further includes:

[0009] The first mineral water pipe is connected to the outlet of the pre-filter.

[0010] A first on / off valve is installed in the first mineral water pipe and is used to regulate the amount of water output from the pre-filter to the first mineral water pipe; and

[0011] A pure water supply valve can selectively connect the outlet end of the reverse osmosis filter element and the mineral water pipe to regulate the amount of pure water output from the reverse osmosis filter element to the first mineral water pipe.

[0012] In some embodiments, the water purification system further includes:

[0013] A filtration system, comprising the pre-filter and the reverse osmosis filter; and

[0014] A pure water discharge valve is connected to the outlet of the filtration system.

[0015] In some embodiments, the water purification system further includes:

[0016] The third shut-off valve is located between the pre-filter and the reverse osmosis filter to control the amount of soft water output from the soft water system to the reverse osmosis filter.

[0017] In some embodiments, the water purification system further includes:

[0018] A soft water quality testing device is installed downstream of the pre-filter and upstream of the reverse osmosis filter to obtain the total dissolved solids value of the soft water.

[0019] In some embodiments, the mineral water pipeline further includes:

[0020] A mineral water quality testing device is installed downstream of the connection between the pure water supply valve and the first mineral water pipe to obtain the total dissolved solids value of the mineral water output from the first mineral water pipe.

[0021] In some embodiments, the water purification system further includes:

[0022] A pure water quality testing device is installed downstream of the reverse osmosis filter element and is used to detect the total dissolved solids value of the soft water after filtration by the reverse osmosis filter element.

[0023] In some embodiments, the water purification system further includes:

[0024] The inlet of the post-filter is connected to the outlet of the reverse osmosis filter.

[0025] In some embodiments, the soft water system further includes:

[0026] The soft water valve includes a first soft water outlet channel and a raw water outlet channel connected to the raw water inlet.

[0027] The pre-filter is connected to the first soft water outlet channel and the raw water outlet channel.

[0028] In some embodiments, the water purification system further includes:

[0029] A booster pump is located upstream of the reverse osmosis filter element and is used to pressurize the soft water flowing through the reverse osmosis filter element.

[0030] In some embodiments, the water purification system further includes:

[0031] The pure water return pipeline connects the downstream of the reverse osmosis filter element to the upstream of the booster pump, enabling the filtered pure water to return to the upstream of the booster pump for secondary filtration.

[0032] In some embodiments, the pure water return pipeline includes:

[0033] A pure water return pipe connects the downstream of the reverse osmosis filter element to the upstream of the booster pump, used to return filtered pure water to the upstream of the booster pump for secondary filtration; and

[0034] A pure water reflux control component is installed on the pure water reflux pipe to control the on / off state and flow rate of the reflux water.

[0035] The mineral water pipeline of the water purifier based on this application embodiment connects the outlet of the pre-filter and the outlet of the reverse osmosis filter to mix the water filtered by the pre-filter with the pure water filtered by the reverse osmosis filter to form mineral water. The mineral content of the mineral water can be controlled by adjusting the mixing ratio to meet the user's water quality requirements. The system can dynamically adjust the mixing ratio of mineral water and pure water according to the TDS value or user settings to generate mineral water that meets specific needs. For example, when the TDS value (Total Dissolved Solids) of the water filtered by the pre-filter is detected to be high, the amount of pure water filtered by the reverse osmosis filter can be increased to dilute the mineral content; conversely, the amount of pure water supplied can be reduced to increase the mineral concentration. This not only enhances the flexibility and controllability of the mineral water pipeline but also provides users with a more precise mineral water mixing function to meet diverse water needs. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application 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 this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the structure of a water purifier in one embodiment of this application;

[0038] Figure 2 This is a schematic diagram of the internal structure of a water purifier from one perspective in one embodiment of this application;

[0039] Figure 3 This is a schematic diagram of the internal structure of a water purifier from another perspective in one embodiment of this application;

[0040] Figure 4 This is a schematic diagram of the water system and mineral water pipeline of a water purifier in one embodiment of this application;

[0041] Figure 5 This is a schematic diagram of the water circuit structure of a water purifier in one embodiment of this application;

[0042] Figure 6 This is a schematic diagram of the water circuit structure of a water purifier in another embodiment of this application.

[0043] Explanation of icon numbers:

[0044] 001. Water purifier; 1A. Faucet; 10. Housing assembly; 10A. Inner cavity; 002. Soft water system; 010. Resin tank; 020. Soft water valve; 030. Salt tank; 003. Purification system; 0031. Pure water return pipe; 0032. Pure water return control component; 0033. Pure water quality testing component; 0034. Pure water discharge valve; 0035. Soft water quality testing component; 0036. Third on / off valve; 50. Filtration system; 52. Pre-filter cartridge 53. Reverse osmosis filter element; 54. Wastewater drainage pipeline; 541. Wastewater drainage pipe; 542. Wastewater valve; 543. Adjustable wastewater valve; 55. Post-filter element; 80. Booster pump; 57. Water dispenser; 004. Hot water system; 006. Mineral water pipeline; 0061. First mineral water pipeline; 0063. Primary filter element; 0064. First on / off valve; 0066. Flow restrictor; 0068. Pure water supply valve; 0069. Mineral water quality testing equipment.

[0045] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0046] To make the objectives, technical solutions and advantages of this utility model clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0047] Where the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this invention as detailed in the appended claims.

[0048] In the description of this utility model, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0050] Please refer to Figures 1 to 4 This application provides a water purifier 001, which includes a housing assembly 10, a soft water system 002, a water purification system 003, and a mineral water pipeline 006.

[0051] The housing assembly 10 has an inner cavity 10A, in which the soft water system 002, the water purification system 003, and the mineral water pipeline 006 are all installed. The housing assembly 10 protects the soft water system 002, the water purification system 003, and the mineral water pipeline 006, reducing the probability of damage to the soft water system 002 and the water purification system 003. It is understood that the housing assembly 10 can be made of at least one of metal and plastic. For example, the housing assembly 10 can be made of metal to give it high structural strength, reducing the probability of damage and consequently reducing the probability of damage to the soft water system 002, the water purification system 003, and the mineral water pipeline 006, thus extending the service life of the water purifier 001. Alternatively, the housing assembly 10 can be made of plastic, which reduces weight and material costs while ensuring structural strength.

[0052] The water softening system 002, serving as a water pretreatment unit, includes a water softening valve 020, a resin tank 010, and a brine tank 030. The water softening valve 020 has an inlet raw water channel, an outlet raw water channel, and a first outlet softened water channel. The inlet raw water channel connects the raw water inlet to the resin tank 010, allowing the incoming raw water to be transported to the resin tank 010 for softening. The outlet raw water channel connects to the inlet raw water channel and is used to output raw water that has not undergone softening in the resin tank 010. The water softening valve 020 may also include a channel connecting the brine tank 030 and the resin tank 010; the resin tank 010 softens hard water into soft water; the brine tank 030 stores regenerated salt, which can enter the resin tank 010 via the water softening valve 020 to regenerate the resin in the resin tank 010.

[0053] The water purifier 001 may also include a controller. When the soft water mode is activated, the controller can open the raw water inlet channel. At this time, hard water can enter the resin tank 010 through the soft water valve 020. The sodium ions on the resin in the resin tank 010 can exchange with the calcium and magnesium ions in the hard water, thereby adsorbing the calcium and magnesium ions, turning the hard water into soft water, and storing it in the resin tank 010.

[0054] When all sodium ions on the resin are converted into calcium and magnesium ions, the resin reaches saturation. At this point, the resin loses its ability to soften hard water, and the controller can control the soft water system 002 to start the regeneration mode. It is understood that the controller can control the soft water system 002 to start the regeneration program at preset intervals to regenerate the resin, thereby ensuring that users can access soft water. For example, the preset interval can be 12 hours, 24 hours, 36 hours, etc. In this embodiment, no specific limitation is made to the preset interval.

[0055] Please refer to Figure 4 When the regeneration mode is activated, the controller closes the first soft water outlet channel and connects the soft water valve 020 to the raw water inlet channel and the brine tank, allowing the raw water to contact the regenerated salt in the brine tank 030 and dissolve the regenerated salt to form brine. In another embodiment, the controller can also connect the soft water valve 020 to the resin tank 010 and the brine tank 030. In this case, hard water enters the resin tank 010 via the soft water valve 020 and then flows from the resin tank 010 into the brine tank 030 via the soft water valve 020. After entering the brine tank 030, the water in the resin tank 010 contacts the regenerated salt in the brine tank 030 and dissolves the regenerated salt to form brine. The soft water valve 020 can draw the brine from the brine tank 030 into the resin tank 010, using sodium ions in the brine to replace calcium and magnesium ions on the resin, thereby restoring the resin's softening ability.

[0056] The water purification system 003 may include multiple filter cartridges, which can be installed independently or integrated into a composite filter cartridge. Please refer to [link / reference needed]. Figures 1 to 4 More specifically, the water purification system 003 may include a filtration system 50, which includes a primary filter element and a secondary filter element. The primary filter element may be a pre-filter element 52, and the secondary filter element may be a reverse osmosis filter element 53. The inlet of the pre-filter element 52 is connected to the inlet of the filtration system 50, the outlet of the pre-filter element 52 is connected to the inlet of the reverse osmosis filter element 53, and the outlet of the reverse osmosis filter element 53 is connected to the outlet of the filtration system 50.

[0057] The aforementioned first soft water outlet channel is connected to the inlet of the water purification system 003, that is, to the pre-filter cartridge 52. The soft water system 002 can soften hard water rich in calcium and magnesium ions into soft water, that is, the soft water system 002 can adsorb calcium and magnesium ions in hard water, so that the first soft water outlet channel outputs soft water to the water purification system 003. This reduces the probability of calcium and magnesium ions accumulating in large quantities at the filter cartridge of the water purification system 003, ensuring that the filter cartridge has a normal service life. After being filtered by the water purification system 003, the soft water can provide pure water to the user. The soft water valve 020 also includes a second soft water outlet channel, which is connected to the resin tank 010, and this second soft water outlet channel can provide soft water to the user.

[0058] Pre-filter 52, serving as the first filtration barrier in the water purification system 003, primarily performs preliminary filtration of the softened water output from the soft water system 002. Its core function is to intercept large particles such as sediment, rust, insect eggs, and red worms in the soft water, preventing these impurities from entering the subsequent reverse osmosis filter 53, thereby extending the lifespan of the reverse osmosis membrane and improving filtration efficiency. Pre-filter 52 can be of various types, including PP cotton filter (polypropylene melt-blown filter), activated carbon filter, ultrafiltration filter, composite filter, or quartz sand filter. Each filter has different filtration characteristics: PP cotton filter removes large particles through physical interception; activated carbon filter adsorbs residual chlorine, odors, and some organic matter; ultrafiltration filter further retains colloids and microorganisms; composite filter combines multiple filter materials to provide a more comprehensive pretreatment effect; and quartz sand filter is suitable for the preliminary filtration of high-turbidity water sources. This versatile pre-filter configuration allows for flexible selection based on specific water quality conditions and user needs, ensuring that the water purification system 003 can operate efficiently and stably in different environments.

[0059] The reverse osmosis filter cartridge 53 features a reverse osmosis membrane, which can be an artificial semi-permeable membrane with an extremely small pore size, typically below 0.0001 micrometers. This ultra-micropore structure allows the reverse osmosis membrane to efficiently intercept various impurities in the water, such as dissolved salts, colloids, microorganisms, and organic matter. Driven by the pressure provided by the booster pump 80, water molecules can pass through the reverse osmosis membrane, while most dissolved solids, heavy metal ions, bacteria, viruses, and organic pollutants are retained and discharged with the wastewater. This highly efficient filtration mechanism enables the reverse osmosis filter cartridge 53 to produce high-purity drinking water, meeting users' stringent requirements for water safety and health.

[0060] Please see Figure 4 In other embodiments, the filtration system 50 may further include a post-filter 55, the inlet of which is connected to the outlet of the reverse osmosis filter 53, and the outlet of the post-filter 55 is connected to the outlet of the filtration system 50. The post-filter 55 is used to adsorb odors and residual chlorine, and can be used to improve the taste of room temperature water. The post-filter 55 can be configured similarly to the pre-filter 52. It is understood that the pre-filter 52 and the post-filter 55 can be integrated into a single-stage filter, so that when the user replaces the single-stage filter, both the pre-filter 52 and the post-filter 55 can be replaced simultaneously, thereby improving filter replacement efficiency.

[0061] It is understood that, in the embodiments of this application, the filtration system 50 may also include only the reverse osmosis filter element 53, which is used to filter impurities in the water in one step to provide pure water to the user.

[0062] Please refer to Figures 4 to 6In order to facilitate the removal of impurities removed by the filtration system 50, the water purification system 003 also includes a wastewater drainage pipe 54. The wastewater drainage pipe 54 includes a wastewater drainage pipe 541 and a wastewater valve 542. The wastewater drainage pipe 541 is connected to the wastewater outlet of the filtration system 50, and the wastewater valve 542 is installed on the wastewater drainage pipe 541. The wastewater valve 542 is used to control the discharge of wastewater.

[0063] It is understood that the wastewater drain pipe 54 can be connected to the wastewater outlet of the pre-filter 52 and the wastewater outlet of the reverse osmosis filter 53. In other embodiments, the wastewater drain pipe 54 may also be connected only to the wastewater outlet of the reverse osmosis filter 53.

[0064] Please refer to Figures 4 to 6 Because the reverse osmosis filter element 53 has operating water pressure requirements, the water purification system 003 also includes a booster pump 80. The booster pump 80 is located upstream of the reverse osmosis filter element 53 and can boost the water pressure to the operating pressure range required by the reverse osmosis membrane, ensuring the membrane can operate normally and achieve stable water production and good filtration effect. The booster pump 80 is a variable frequency booster pump, which can dynamically adjust its operating frequency and output pressure according to the actual needs of the water purification system 003. Through its built-in intelligent control system, the variable frequency booster pump monitors the operating status and inlet water pressure of the reverse osmosis filter element 53 in real time and automatically adjusts the pump speed to ensure the reverse osmosis membrane is always within the optimal operating pressure range. This not only improves the filtration efficiency and water production stability of the reverse osmosis filter element 53 but also significantly reduces energy consumption, avoiding energy waste and equipment wear caused by frequent start-stop cycles of traditional fixed frequency pumps. Furthermore, the variable frequency booster pump operates with lower noise, further enhancing the user experience. Through intelligent pressure regulation and energy-saving operation, the variable frequency booster pump provides efficient, stable, and environmentally friendly power support for the water purification system 003.

[0065] Please see Figures 4 to 6 Furthermore, the water purification system 003 may also include a pure water return pipeline and a pure water quality testing device 0033. The pure water quality testing device 0033 is located downstream of the reverse osmosis filter element 53 and is used to detect the total dissolved solids (TDS) value of the pure water filtered by the reverse osmosis filter element 53. The pure water return pipeline connects the downstream of the reverse osmosis filter element 53 to the upstream of the booster pump 80, enabling partial return of the filtered pure water to the upstream of the booster pump 80 for secondary filtration. Specifically, when the pure water quality testing device 0033 detects that the total dissolved solids value of the pure water exceeds a preset threshold, the controller will activate the pure water return pipeline, re-sending the substandard pure water to the upstream of the booster pump 80 for further filtration by the reverse osmosis filter element 53 until the TDS value of the pure water reaches the standard, ensuring the stability of the effluent water quality.

[0066] The pure water return pipeline includes a pure water return pipe 0031 and a pure water return control component 0032. The pure water return pipe 0031 connects the downstream of the reverse osmosis filter element 53 to the upstream of the booster pump 80, and is used to return a portion of the filtered pure water to the upstream of the booster pump 80 for secondary filtration. The pure water return control component 0032 is installed on the pure water return pipe 0031 and is used to control the on / off state and flow rate of the return water. The pure water return control component 0032 can be a pure water return check valve to ensure that the water flows only in the return direction, avoiding backflow contamination.

[0067] Please see Figure 4 The water purification system 003 also includes a third shut-off valve 0036, which is located downstream of the pre-filter element 52 and upstream of the reverse osmosis filter element 53. Specifically, the third shut-off valve 0036 is located upstream of the pure water return pipeline and the booster pump 80 to control the amount of soft water output from the soft water system (002) to the reverse osmosis filter element. During the pure water return filtration process, the controller can completely close the third shut-off valve 0036 to temporarily stop the input of softened water to the reverse osmosis filter element 53. This allows resources to be concentrated on repeatedly refluxing unqualified pure water to ensure its TDS value reaches the preset standard, without simultaneously processing new softened water input. Thus, the water purification system 003 can significantly improve the efficiency of pure water return filtration, reduce the workload of the reverse osmosis filter element 53, and extend its service life. Furthermore, it avoids fluctuations in mixed water quality caused by softened water input during the return filtration process, ensuring that the returned filtered pure water quickly reaches the high purity requirement.

[0068] The water purification system 003 also includes a pure water discharge valve 0034. The inlet of the pure water discharge valve 0034 is connected to the outlet of the filtration system 50, and it is used to control the discharge of pure water. By adjusting its opening and closing state, the pure water discharge valve 0034 can precisely control the output flow rate and timing of pure water. When a user needs to use pure water, the pure water discharge valve 0034 opens, and the pure water generated by the filtration system 50 flows through the pure water discharge valve 0034 to other water outlets for direct drinking or use by the user. When the system detects that no water supply is needed, the pure water discharge valve 0034 closes to avoid water waste.

[0069] The mineral water pipeline 006 connects the outlet of the pre-filter 52 and the outlet of the reverse osmosis filter 53, enabling the proportional mixing of the primary purified water filtered by the pre-filter 52 and the high-purity pure water filtered by the reverse osmosis filter 53 to generate mineral water. The mineral content of the mineral water can be precisely controlled by intelligently adjusting the mixing ratio. For example, increasing the proportion of water filtered by the pre-filter 52 can increase the mineral content, or increasing the proportion of pure water filtered by the reverse osmosis filter 53 can decrease the mineral content, thus meeting the user's water quality requirements.

[0070] The mineral water pipeline 006 also includes a first mineral water pipeline 0061, a first on / off valve 0064, and a pure water supply valve 0068. The first mineral water pipeline 0061 connects to the outlet of the pre-filter cartridge 52 and is used to deliver mineral water that has undergone primary filtration. The first on / off valve 0064 is located on the first mineral water pipeline 0061 and is used to adjust the amount of water output from the pre-filter cartridge 52 to the first mineral water pipeline 0061. The pure water supply valve 0068 can selectively connect the outlet of the reverse osmosis filter cartridge 53 and the first mineral water pipeline 0061 to regulate the amount of pure water output from the reverse osmosis filter cartridge 53 to the first mineral water pipeline 0061. Through the coordinated operation of the first on / off valve 0064 and the pure water supply valve 0068, the system can dynamically adjust the mixing ratio of mineral water and pure water according to the TDS value or user settings to generate mineral water that meets specific needs. For example, when the TDS (Total Dissolved Solids) value of the water filtered by pre-filter 52 is detected to be high, the opening of the pure water supply valve 0068 can be increased to dilute the mineral content; conversely, the pure water supply can be reduced to increase the mineral concentration. This not only enhances the flexibility and controllability of the mineral water pipeline 006, but also provides users with a more precise mineral water blending function to meet diverse water usage needs.

[0071] The mineral water pipeline 006 also includes a mineral water quality testing device 0069, which is located downstream of the connection between the pure water supply valve 0068 and the first mineral water pipeline 0061, to obtain the total dissolved solids value of the mineral water output from the first mineral water pipeline 0061, and to ensure that the mixed mineral water meets the preset mineral content standard.

[0072] The water purification system 003 also includes a soft water quality testing device 0035, located downstream of the pre-filter cartridge 52 and upstream of the reverse osmosis filter cartridge 53, to obtain the total dissolved solids (TDS) value of the soft water. It should be noted that the TDS value of water sources in a certain area is usually relatively stable over a specific time period. The soft water system uses sodium-type ion exchange resin to replace calcium and magnesium ions in the water with sodium ions (Na+). +Although calcium and magnesium ions are removed, the increase in sodium ions partially offsets the change in TDS value. Therefore, after softening, the TDS value of tap water remains basically unchanged or only changes slightly. Thus, the TDS value measured by the softened water quality tester 0035 is basically equivalent to the TDS value of the raw water after passing through the pre-filter cartridge 52. When the detected TDS value is greater than the preset threshold, it indicates that the total dissolved solids value of the raw water is high. At this time, the system can determine the operating mode of the mineral water pipeline 006 according to the preset logic: if the detected TDS value is within the normal range, the mineral water pipeline 006 can choose to discharge the primary purified water filtered by the pre-filter cartridge 52 separately and directly output drinking water rich in natural minerals; if the TDS value exceeds the first preset range (first preset value), the system will start the pure water supply valve 0068 to mix the pure water filtered by the reverse osmosis filter cartridge 53 with the primary purified water filtered by the pre-filter cartridge 52 in proportion to generate drinking water with appropriate mineral content and ensure that the water quality meets health standards; if the TDS value further increases and exceeds the second preset range (second preset value), the system will prioritize starting the pure water return pipeline of the water purification system 003 to return the pure water filtered by the reverse osmosis filter cartridge 53 to the upstream of the booster pump 80 for secondary or multiple filtrations to further reduce the TDS value of the pure water. Subsequently, the system mixes the high-purity pure water after multiple reflux filtrations with the primary purified water filtered by the pre-filter cartridge 52 in a certain proportion to generate mineral water that meets the user's needs.

[0073] This intelligent judgment and regulation mechanism based on TDS value ensures that the mineral content in mineral water is always within a reasonable range. It avoids both excessive mineral intake due to excessively high TDS value and insufficient mineral intake due to excessively low TDS value, providing users with a healthier and safer drinking water option.

[0074] Through the coordinated operation of the soft water quality testing device 0035, the mineral water quality testing device 0069, and the pure water quality testing device 0033, the water purification system 003 can acquire water quality data at each stage in real time and dynamically adjust the system operating parameters based on the test results. For example, when the soft water quality testing device 0035 detects an abnormal TDS value in the softened water, the system can activate the soft water direct discharge control device to discharge the substandard softened water; when the mineral water quality testing device 0069 detects that the TDS value of the mineral water exceeds the preset range, the system can adjust the mixing ratio of pure water and mineral water by adjusting the opening of the pure water supply valve 0068; when the pure water quality testing device 0033 detects that the TDS value of the pure water exceeds the standard, the system can activate the pure water return pipeline to re-send the substandard pure water to the reverse osmosis filter element 53 for secondary filtration. This multi-stage water quality monitoring and intelligent control mechanism not only improves the operating efficiency and water quality stability of the water purification system 003, but also provides users with a safer and healthier drinking water guarantee.

[0075] The mineral water pipeline 006 may also include a flow restrictor 0066, which is installed in the first mineral water pipeline 0061 and limits the maximum flow rate of the first mineral water pipeline 0061 through a fixed orifice or adjustable structure. This eliminates the problem of fluctuating water flow caused by raw water pressure fluctuations (such as changes in municipal water supply pressure) and ensures uniform water flow. In addition, when the first on / off valve 0064 suddenly opens or closes, the flow restrictor 0066 can buffer the water flow impact, reduce the risk of pipeline vibration and joint leakage, thereby improving the reliability and durability of the system.

[0076] The hot water system 004 is connected to the water purification system 003 and is used to store and heat the filtered pure water to meet users' hot water needs at any time, thus improving the functionality and practicality of the equipment. The hot water system 004 can quickly respond to users' hot water needs, such as for brewing coffee, tea, or cooking. At the same time, because the hot water system 004 directly uses high-purity pure water filtered by the reverse osmosis filter element 53, it avoids scale formation, extends the service life of the heating element, and ensures the purity and safety of the hot water.

[0077] Please refer to Figures 5 to 6 It is understandable that the water purifier 001 may also include a water dispenser 57, where room temperature water can enter the water dispenser 57 after passing through a one-way valve, thus supplying water to the water dispenser 57.

[0078] In this application, softened water is directly output through the second soft water outlet of the soft water system 002 to meet the needs of domestic water use such as washing and bathing, avoiding the scale problem caused by hard water. The water purification system 003 provides pure water, ensuring the purity and safety of drinking water. Meanwhile, the mineral water pipeline 006 retains the natural trace elements in the raw water, providing users with a mineral-supplemented drinking water option. Furthermore, the hot water system 004 can provide users with hot purified water. This differentiated design solves the problem of "overly pure water" caused by the complete removal of minerals in traditional water purifiers, while avoiding damage to the equipment from hard water, achieving a balance between health needs and practical functions. Moreover, soft water pretreatment significantly reduces the burden on the water purification system 003. For example, before the softened water enters the RO reverse osmosis membrane, calcium and magnesium ions, which are prone to scaling, are removed, delaying membrane fouling, improving desalination efficiency, extending filter life, and reducing wastewater caused by membrane clogging. Because the hot water system 004 uses purified water, the heating element and inner tank are less prone to scale buildup, resulting in stable heat transfer efficiency and reduced energy consumption and maintenance frequency.

[0079] The water purifier 001 may include a faucet 1A, which is integrated into the housing assembly 10. Alternatively, the water purifier 001 may not include a faucet 1A, but may have a faucet 1A connected to an external source (e.g., the kitchen). Specifically, the faucet 1A may be connected to, or a combination thereof, or all of the following outlets: the outlet of the mineral water pipeline 006, the outlet of the water purification system 003, the outlet of the soft water system 002, and the outlet of the hot water system 004. Thus, when a user takes pure water from faucet 1A, the soft water in resin tank 010 can flow out through the first soft water outlet channel of soft water valve 020 and enter the water purification system 003. After being filtered by the water purification system 003, the soft water can be directly output to faucet 1A to provide the user with room temperature pure water. After being filtered by the water purification system 003, the soft water can also be output to the heating tank assembly 20 or the water dispenser 57 for heating, and then output to faucet 1A through the heating tank assembly 20 to provide the user with hot water, or directly provide the user with hot water through the water dispenser 57.

[0080] It is understood that the water purifier 001 can have two faucets 1A, one of which is connected to the hot water system 004, and the other is connected to the water purification system 003, thus providing the user with both hot water and room temperature water. In other embodiments, the faucet 1A can also be connected to both the hot water system 004 and the water purification system 003, and the flow of hot water or room temperature water can be controlled by a switch.

[0081] It is understandable that faucet 1A can also be a smart faucet 1A. When the controller detects a signal for drawing room temperature water or a water replenishment signal from the hot water system 004 at the smart faucet 1A, the controller can control the water purification system 003 to start water production, so as to ensure that users can get room temperature water and hot water from the smart faucet 1A in a timely manner, reduce the user's waiting time, and improve the user experience.

[0082] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0083] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A water purifier, characterized in that, include: The soft water system is connected to the raw water inlet; A water purification system includes a pre-filter and a reverse osmosis filter arranged sequentially in the water path direction, wherein the pre-filter is connected to the first soft water outlet channel of the soft water system or the raw water inlet; as well as A mineral water pipeline connects the outlet of the pre-filter and the outlet of the reverse osmosis filter, and is used to mix the water filtered by the pre-filter with the pure water filtered by the reverse osmosis filter to form mineral water. The mineral water pipeline also includes: The first mineral water pipe is connected to the outlet of the pre-filter. A first on / off valve is installed in the first mineral water pipe and is used to regulate the amount of water output from the pre-filter to the first mineral water pipe; and A pure water supply valve can selectively connect the outlet end of the reverse osmosis filter element and the first mineral water pipe to regulate the amount of pure water output from the reverse osmosis filter element to the first mineral water pipe.

2. The water purifier as described in claim 1, characterized in that, The water purification system also includes: A filtration system, comprising the pre-filter and the reverse osmosis filter; and A pure water discharge valve is connected to the outlet of the filtration system.

3. The water purifier as described in claim 1, characterized in that, The water purification system also includes: The third shut-off valve is located between the pre-filter and the reverse osmosis filter to control the amount of soft water output from the soft water system to the reverse osmosis filter.

4. The water purifier as described in claim 1, characterized in that, The water purification system also includes: A soft water quality testing device is installed downstream of the pre-filter and upstream of the reverse osmosis filter to obtain the total dissolved solids value of the soft water.

5. The water purifier as described in claim 1, characterized in that, The mineral water pipeline also includes: A mineral water quality testing device is installed downstream of the connection between the pure water supply valve and the first mineral water pipe to obtain the total dissolved solids value of the mineral water output from the first mineral water pipe.

6. The water purifier as described in claim 1, characterized in that, The water purification system also includes: A pure water quality testing device is installed downstream of the reverse osmosis filter element and is used to detect the total dissolved solids value of the soft water after filtration by the reverse osmosis filter element.

7. The water purifier as described in claim 1, characterized in that, The water purification system also includes: The inlet of the post-filter is connected to the outlet of the reverse osmosis filter.

8. The water purifier as described in claim 1, characterized in that, The soft water system also includes: The soft water valve includes a first soft water outlet channel and a raw water outlet channel connected to the raw water inlet. The pre-filter is connected to the first soft water outlet channel and the raw water outlet channel.

9. The water purifier as described in any one of claims 1 to 8, characterized in that, The water purification system also includes: A booster pump is located upstream of the reverse osmosis filter element and is used to pressurize the soft water flowing through the reverse osmosis filter element.

10. The water purifier as described in claim 9, characterized in that, The water purification system also includes: The pure water return pipeline connects the downstream of the reverse osmosis filter element to the upstream of the booster pump, enabling the filtered pure water to return to the upstream of the booster pump for secondary filtration.

11. The water purifier as described in claim 10, characterized in that, The pure water return pipeline includes: A pure water return pipe connects the downstream of the reverse osmosis filter element to the upstream of the booster pump, used to return filtered pure water to the upstream of the booster pump for secondary filtration; and A pure water reflux control component is installed on the pure water reflux pipe to control the on / off state and flow rate of the reflux water.

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