Water purifier

Abstract

The utility model relates to the technical field of water purification, and discloses a water purifier which comprises a water purification system and a heat regeneration device, the water purification system comprises a front filter element, a water storage unit, a heating unit and a heat exchange unit which are connected to a water purification pipeline in series, the front filter element is provided with a first water inlet and a first water outlet, and the heating unit is provided with a heating water inlet and a heating water outlet. The heat exchange unit is provided with a first heat exchange channel and a second heat exchange channel, the heat regeneration device comprises a heat regeneration pipeline, a regeneration drainage pipeline and a control valve group, and the control valve group is switched to a first state based on the fact that the purified water amount of the water purification system reaches a preset nominal value; boiling water of the heating unit flows into the heat exchange unit and exchanges heat with normal-temperature water from the water storage unit to form hot water with a preset value, and the hot water flows into the front filter element to carry out hot flushing on the front filter element. The heating power of the heating unit does not need to be frequently adjusted, the requirement that a user can still directly take boiling water before and after the water purification system executes the heat regeneration mode is met, waiting is not needed, and user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, in particular to a water purifier. Background Art

[0002] During the pipeline transportation process, tap water is inevitably contaminated by rust, silt, organic matter, and microorganisms. A water purifier with a purification function can effectively remove impurities and purify tap water. A water purifier's water purification system typically includes a pre-filter, a precision filter, and a post-treatment filter. The pre-filter is used to remove organic matter, colloids, heavy metals, and silt particles. Precision filters, such as reverse osmosis membrane filters (RO filters), are extremely precise and serve as the core treatment filter of the water purification system. Post-treatment filters are used to remove trace elements, adjust pH, and enhance drinking taste.

[0003] The activated carbon component in the pre-filter can effectively remove oxidizing substances such as residual chlorine. Therefore, the activated carbon component is an indispensable and important component of the pre-filter. However, the activated carbon component of the pre-filter has a shorter lifespan than other filter elements, resulting in the need for frequent replacement of the pre-filter, high cost, and also limiting the nominal value of the rated water purification capacity of the entire machine. Utility Model Content

[0004] In view of this, the present invention provides a water purifier to solve the problem in the prior art that the pre-filter needs to be replaced frequently and at high cost.

[0005] The utility model provides a water purifier, including a water purification system and a heat regeneration device, the water purification system including a pre-filter element, a water storage unit, a heating unit and a heat exchange unit which are sequentially connected in series to a water purification pipeline, the pre-filter element including an activated carbon component, the pre-filter element having a first water inlet and a first water outlet, the water storage unit being connected to the first water outlet, the heating unit having a heating water inlet and a heating water outlet, the heating water outlet being connected to a boiling water intake, the heat exchange unit having a first heat exchange channel and a second heat exchange channel, the two ends of the first heat exchange channel being respectively connected to the water storage unit and the heating water inlet, one end of the second heat exchange channel being connected to the heating water outlet, the heat regeneration device including a heat regeneration pipeline, a regeneration drainage pipeline and a control valve group, One end of the heat regeneration pipeline is connected to the other end of the second heat exchange channel, the other end of the heat regeneration pipeline is connected to the first water outlet, and the regeneration drain pipeline is connected to the first water inlet. The control valve group has a first state of connecting the water storage unit and the first heat exchange channel. Based on the clean water volume of the water purification system reaching a preset nominal value, the control valve group switches to the first state to allow the boiling water of the heating unit to flow into the second heat exchange channel and exchange heat with the normal temperature water from the water storage unit in the first heat exchange channel to form hot water of a preset value. The hot water flows through the heat regeneration pipeline, the first water outlet, the pre-filter element, the first water inlet and the regeneration drain pipeline to realize reverse hot flushing regeneration of the pre-filter element.

[0006] Beneficial effect: The water purification system of the present application can control the working state of the control valve group according to the water purification amount of the water purification system. Specifically, when the water purification amount of the water purification system reaches the preset nominal value, the control valve group switches to the first state to conduct the water storage unit and the first heat exchange channel, so that the boiling water of the heating unit flows into the second heat exchange channel and exchanges heat with the normal temperature water from the water storage unit in the first heat exchange channel to form hot water of a preset value. The hot water flows through the heat regeneration pipeline and the first water outlet into the pre-filter element to realize reverse hot flushing and regeneration of the pre-filter element. The hot water after flushing is discharged through the first water inlet and the regeneration drain pipeline. The water purification system of the present application can start the pre-filter element when the water purification amount reaches the preset nominal value. The filter element is placed in the water for hot flushing to flush out the impurities adsorbed by the activated carbon, and at the same time the activated carbon is disinfected and the activated carbon fibers are regenerated, thereby effectively extending the service life of the pre-filter element, reducing its replacement frequency, reducing costs, and increasing the rated water purification capacity of the water purification system, extending the service life of the water purification system. At the same time, the boiling water of the heating unit is cooled by the set heat exchange unit, which does not affect the hot water use of the water purification system. That is, the water purification system does not need to adjust the heating power of the heating unit before and after executing the thermal regeneration mode, so that the heating unit maintains the power of heating boiling water. Users can directly use boiling water before and after the thermal regeneration mode without waiting, thereby improving the user experience.

[0007] In some embodiments, the water purification system further includes a flow sensor, which is disposed in the water purification pipeline. The flow sensor is used to control the control valve group to switch to the first state when it detects that the purified water volume of the water purification system reaches the preset nominal value.

[0008] Beneficial effect: The water flow in the water purification pipeline is detected in real time by the flow sensor. When it is detected that the water purification volume of the water purification system reaches the preset nominal value, the control valve group is controlled to switch to the first state to realize hot flushing regeneration of the pre-filter element and realize automatic control switching.

[0009] In some embodiments, the control valve group also has a second state that connects the water storage unit and the thermal regeneration pipeline. Based on the completion of the reverse hot flushing regeneration of the pre-filter element, the control valve group switches to the second state, so that the normal temperature water in the water storage unit flows through the thermal regeneration pipeline, the first water outlet, the pre-filter element, the first water inlet and the regeneration drain pipeline to achieve flushing and cooling of the pre-filter element.

[0010] Beneficial effect: After the reverse hot flushing and regeneration of the pre-filter element is completed, the control valve group is switched to the second state to conduct the water storage unit and the hot regeneration pipeline, so that the normal temperature water in the water storage unit flows through the hot regeneration pipeline and the first water outlet into the pre-filter element to achieve flushing and cooling of the pre-filter element. The cooled water is discharged through the first water inlet and the regeneration drain pipeline, thereby quickly replacing the hot water remaining in the hot regeneration of the pre-filter element, achieving rapid cooling of the pre-filter element, reducing the user's waiting time for water, and preventing hot water from flowing into the rear-end fine filter element to cause damage to it and shorten its life.

[0011] In some embodiments, the water purification system also includes a warm water pipeline, which is connected to the outlet of the second heat exchange channel and the inlet of the heat regeneration pipeline, and the warm water pipeline is connected to a warm water intake and a disinfection drainage pipeline; the control valve group also has a third state for connecting the heating unit and the warm water pipeline. Based on the fact that the water purification system is in a disinfection and sterilization mode, the control valve group switches to the third state to allow the boiling water of the heating unit to flow into the warm water pipeline for high-temperature sterilization and be discharged through the disinfection drainage pipeline.

[0012] Beneficial effect: When the water purification system is in the disinfection and sterilization mode, the control valve group switches to the third state to connect the heating unit and the warm water pipeline, so that the boiling water in the heating unit flows into the warm water pipeline to achieve high-temperature sterilization and disinfection of the warm water pipeline, and finally discharged through the disinfection drainage pipeline to ensure that users drink healthy water.

[0013] In some embodiments, the control valve group includes: a first solenoid valve, the inlet of the first solenoid valve is connected to the water storage unit, and the outlet of the first solenoid valve is connected to the first heat exchange channel; a second solenoid valve, the inlet of the second solenoid valve is connected to the water storage unit, and the outlet of the second solenoid valve is connected to the warm water pipeline; a third solenoid valve, the inlet of the third solenoid valve is connected to the heating unit, and the outlet of the third solenoid valve is connected to the inlet of the second solenoid valve;

[0014] Based on the control valve group being in the first state, the first solenoid valve is opened; based on the control valve group being in the second state, the second solenoid valve is opened; based on the control valve group being in the third state, both the second solenoid valve and the third solenoid valve are opened, so that the boiling water of the heating unit flows through the second solenoid valve and the third solenoid valve into the warm water pipeline and is discharged through the disinfection drainage pipeline.

[0015] Beneficial effect: when the control valve group is in the first state, the first solenoid valve is opened, and the normal temperature water of the water storage unit flows through the first solenoid valve into the first heat exchange channel, while the boiling water of the heating unit flows into the second heat exchange channel and exchanges heat with the normal temperature water in the first heat exchange channel to form hot water of a preset value, so as to hot-wash the pre-filter element; when the control valve group is in the second state, the second solenoid valve is opened, and the normal temperature water of the water storage unit flows through the second solenoid valve, the warm water pipeline, and the heat regeneration pipeline into the pre-filter element to flush and cool it; when the control valve group is in the third state, both the second solenoid valve and the third solenoid valve are opened, so that the boiling water of the heating unit flows through the second solenoid valve and the third solenoid valve into the warm water pipeline for high-temperature sterilization and disinfection, and then discharged through the disinfection drainage pipeline.

[0016] In some embodiments, the water purification system further includes a temperature regulating device, which is used to regulate the temperature of the hot water flowing out of the second heat exchange channel to reach the preset value.

[0017] Beneficial effect: Since the temperature of the normal temperature water in the water storage unit is constant (consistent with the environment), and the boiling water temperature of the heating unit is constant, the hot water after heat exchange in the heat exchange unit is generally at a specific temperature. Factors such as changes in ambient temperature are likely to affect the hot water after heat exchange in the heat exchange unit and not be at the preset value. Based on this, the temperature of the hot water flowing out of the second heat exchange channel can be adjusted by the temperature control device to reach the preset value.

[0018] In some embodiments, the temperature control device includes a temperature control pipeline and a temperature control valve, the two ends of the temperature control pipeline are respectively connected to the heating unit and the warm water pipeline, and the temperature control valve is arranged on the temperature control pipeline. The temperature control valve is used to open when it is detected that the temperature of the hot water in the warm water pipeline is lower than the preset value, so that the boiling water in the heating unit flows through the temperature control pipeline into the warm water pipeline.

[0019] Beneficial effect: The hot water after heat exchange in the heat exchange unit flows into the warm water pipeline. When the temperature of the warm water taken by the user is lower than the preset value or the temperature of the hot water for hot flushing the pre-filter is lower than the preset value, the thermostatic valve is opened to allow the boiling water in the heating unit to flow into the warm water pipeline through the thermostatic pipeline and mix with the hot water inside to increase the temperature of the hot water to reach the preset value.

[0020] In some embodiments, the water purification system further includes a pipeline detection device, which is used to detect leakage or blockage in the water purification pipeline.

[0021] Beneficial effect: Due to the failure of the seal at the connection of the water purification pipeline of the whole machine, the long-term water leakage of the whole machine caused the flow sensor detection data to be distorted and inaccurate, resulting in an erroneous judgment and the initiation of hot flushing and regeneration of the pre-filter, leading to unnecessary accidents. Based on this, this application sets up a pipeline detection device to detect the leakage and blockage of the water purification pipeline, and timely feedback the leakage and blockage of the water purification pipeline, reminding the background personnel to carry out timely inspection and maintenance.

[0022] In some embodiments, the pipeline detection device includes a first pressure switch, which is arranged in the clean water pipeline. The clean water pipeline is determined to be leaking based on the pressure of the first pressure switch being lower than a first pressure value and being in a closed state.

[0023] Beneficial effect: When the pressure of the first pressure switch is lower than the first pressure value and is in a closed state, it means that there is no water flowing through the position of the first pressure switch or a leak occurs in front of the first pressure switch, resulting in insufficient water pressure, thereby concluding that there is a leak in the water purification pipeline.

[0024] In some embodiments, the pipeline detection device also includes a second pressure switch, which is arranged in the regeneration drainage pipeline. According to the pressure of the second pressure switch being higher than a second pressure value and being in an open state, it is determined that the clean water pipeline is blocked.

[0025] Beneficial effect: When the pressure of the second pressure switch is higher than the second pressure value and is in the open state, it means that the clean water pipeline behind the second pressure switch is blocked, resulting in excessive pressure at the position of the second pressure switch, causing it to open to relieve pressure and allow water to flow through, thereby concluding that the clean water pipeline is blocked.

[0026] In some embodiments, the water purification system further includes a pre-filter, which is disposed at the water inlet end of the water purification pipeline and is used for performing primary physical filtration on the raw water.

[0027] Beneficial effect: By adding a pre-filter at the water inlet end to perform the first physical filtration of debris such as silt, the quality of the raw water entering the whole machine is improved, and large particles of impurities are removed, thereby ensuring the service life of the whole machine.

[0028] In some embodiments, the water purifier further includes an Internet of Things communication module, which is connected to the water purification system. The Internet of Things communication module is used to connect to the cloud to upload the health data of the water purifier to the cloud.

[0029] Beneficial effects: Through the IoT communication module, users can effectively monitor the operating status and filter life data of the water purifier from the IoT platform, and can upload the health monitoring data of the entire machine to the cloud in a targeted manner, so that back-end maintenance personnel can timely understand the usage of the water purifier and facilitate timely inspection and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 A schematic diagram of the overall connection structure of a water purifier is shown with the control valve group in a first state according to an embodiment of the utility model;

[0032] Figure 2 A schematic diagram of the overall connection structure of a water purifier is shown with the control valve group in a second state according to an embodiment of the utility model;

[0033] Figure 3 A schematic diagram of the overall connection structure of a water purifier is shown with the control valve group in a third state according to an embodiment of the utility model;

[0034] Figure 4 A schematic structural diagram of a pre-filter element according to an embodiment of the present invention is shown;

[0035] Figure 5 A schematic structural diagram of a fine filter element according to an embodiment of the present invention is shown;

[0036] Figure 6 A schematic diagram of the three-dimensional structure of a water purifier according to an embodiment of the present invention is shown;

[0037] Figure 7 A schematic diagram of the internal structure connection of a water purifier according to an embodiment of the present invention is shown.

[0038] Description of reference numerals:

[0039] 1. Pre-filter element; 11. First filter unit; 111. First water inlet; 112. First water outlet; 12. Second filter unit; 121. Second water inlet; 122. Second water outlet; 2. Fine filter element; 21. Fine filter element water inlet; 22. Pure water outlet; 23. Wastewater outlet; 3. Water storage unit; 4. Post-filter element; 5. Heat exchange unit; 6. Heating unit; 61. Heating water inlet; 62. Heating water outlet;

[0040] 100. Clean water pipeline; 101. First solenoid valve; 102. Second solenoid valve; 103. Third solenoid valve; 104. First water inlet valve; 105. Flow sensor; 106. First pressure switch; 107. Second water inlet valve; 108. Pressure-stabilizing pump; 200. Thermal regeneration pipeline; 201. Regeneration valve; 202. Check valve; 300. Boiling water pipeline; 301. Boiling water inlet; 302. Boiling water solenoid valve; 400. Warm water pipeline; 401. Warm water inlet; 402. Warm water solenoid valve; 500. Regeneration drain pipeline; 501. Regeneration drain valve; 502. Second pressure switch; 600. Thermostatic pipeline; 601. Thermostatic valve; 700. Disinfection drain pipeline; 701. Disinfection drain valve; 800. Wastewater pipeline; 801. Wastewater valve; 900. Casing. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0042] The following combination Figures 1 to 7 , describing the embodiments of the present utility model.

[0043] like Figures 1 to 5As shown, according to an embodiment of the present invention, a water purifier is provided, including a water purification system and a heat regeneration device, wherein the water purification system includes a pre-filter element 1, a water storage unit 3, a heating unit 6 and a heat exchange unit 5 which are sequentially connected in series to a water purification pipeline 100, the pre-filter element 1 includes an activated carbon component, the pre-filter element 1 has a first water inlet 111 and a first water outlet 112, the water storage unit 3 is connected to the first water outlet 112, the heating unit 6 has a heating water inlet 61 and a heating water outlet 62, the heating water outlet 62 is connected to a boiling water intake 301, the heat exchange unit 5 has a first heat exchange channel and a second heat exchange channel, the two ends of the first heat exchange channel are respectively connected to the water storage unit 3 and the heating water inlet 61, one end of the second heat exchange channel is connected to the heating water outlet 62, the heat regeneration device includes a heat regeneration pipe Road 200, regeneration drainage pipeline 500 and control valve group, one end of the hot regeneration pipeline 200 is connected to the other end of the second heat exchange channel, the other end of the hot regeneration pipeline 200 is connected to the first water outlet 112, the regeneration drainage pipeline 500 is connected to the first water inlet 111, the control valve group has a first state of conducting the water storage unit 3 and the first heat exchange channel, based on the water purification system The amount of clean water reaches a preset nominal value, the control valve group switches to the first state to allow the boiling water of the heating unit 6 to flow into the second heat exchange channel and exchange heat with the normal temperature water from the water storage unit 3 in the first heat exchange channel to form hot water of a preset value, and the hot water flows through the hot regeneration pipeline 200, the first water outlet 112, the pre-filter element 1, the first water inlet 111 and the regeneration drainage pipeline 500 to realize reverse hot flushing regeneration of the pre-filter element 1.

[0044] The water purification system of the present embodiment can control the working state of the control valve group according to the water purification amount of the water purification system. Specifically, when the water purification amount of the water purification system reaches the preset nominal value, the control valve group switches to the first state to connect the water storage unit 3 and the first heat exchange channel, so that the boiling water of the heating unit 6 flows into the second heat exchange channel and exchanges heat with the normal temperature water from the water storage unit 3 in the first heat exchange channel to form hot water of a preset value. The hot water flows through the heat regeneration pipeline 200 and the first water outlet 112 and flows into the pre-filter element 1 to realize reverse hot flushing and regeneration of the pre-filter element 1. The hot water after flushing is discharged through the first water inlet 111 and the regeneration drain pipeline 500. The water purification system of the present application reaches the preset nominal value. Start hot flushing of the pre-filter 1 to flush out impurities adsorbed by the activated carbon, and at the same time disinfect the activated carbon and regenerate the activated carbon fibers, thereby effectively extending the service life of the pre-filter 1, reducing its replacement frequency, reducing costs, and increasing the rated water purification capacity of the water purification system, extending the service life of the water purification system. At the same time, the boiling water of the heating unit 6 is cooled by the set heat exchange unit 5, thereby not affecting the hot water use of the water purification system. That is, the water purification system does not need to adjust the heating power of the heating unit 6 before and after executing the thermal regeneration mode, so that the heating unit 6 maintains the power of heating boiling water. The user can directly use boiling water before and after the thermal regeneration mode without waiting, thereby improving the user experience.

[0045] The clean water pipeline 100 is connected to the raw water inlet end, and the raw water is generally tap water, so as to purify the tap water. A first water inlet valve 104 is provided on the clean water pipeline 100 upstream of the pre-filter 1 to facilitate the control of the flow of tap water.

[0046] like Figure 1 、 Figure 4 and Figure 5 As shown, the pre-filter element 1 of the present application is a composite PCB filter element. In some embodiments, the pre-filter element 1 includes a first filter unit 11, which includes an activated carbon component, a first water inlet 111 connected to the inlet of the first filter unit 11, and a first water outlet 112 connected to the outlet of the first filter unit 11.

[0047] In the above arrangement, the raw water (tap water) entering from the water inlet flows through the first water inlet 111 and then flows into the first filter unit 11. After being filtered by the first filter unit 11, it flows out through the first water outlet 112, thereby achieving primary filtration of the raw water and removing large particles of impurities in the raw water.

[0048] For example, the first filter unit 11 can be a filter element synthesized from PP cotton, activated carbon, and ultrafiltration, which can adsorb impurities such as mud and sand in the raw water, and can also remove residual chlorine in the raw water to achieve coarse filtration of the raw water.

[0049] In some embodiments, the pre-filter element 1 has a second water inlet 121 and a second water outlet 122. The pre-filter element 1 also includes a second filter unit 12 independently arranged from the first filter unit 11. The second water inlet 121 is connected to the inlet of the second filter unit 12, the second water outlet 122 is connected to the outlet of the second filter unit 12, and the water storage unit 3 is connected to the second water outlet 122.

[0050] Pure water flows into the second filter unit 12 through the second water inlet 121. The second filter unit 12 can filter the pure water again to remove trace elements, adjust the pH value and drinking taste. The filtered pure water flows to the water intake end through the second water outlet 122 for user use and / or flows to the water storage unit 3 for storage.

[0051] For example, the second filter unit 12 may be a filter element containing activated carbon components.

[0052] Specifically, the pre-filter element 1 has a filter housing, and the first water inlet 111, the first water outlet 112, the second water inlet 121 and the second water outlet 122 are all arranged on the filter housing. The first filter unit 11 and the second filter unit 12 are independently arranged in the filter housing. By integrating the first filter unit 11 and the second filter unit 12 in the same filter housing, the structure of the whole machine is made more compact and the volume is reduced.

[0053] In some embodiments, the water production device further includes a fine filter element 2 having a fine filter element water inlet 21 and a pure water inlet 22 . The fine filter element water inlet 21 is connected to the first water outlet 112 , and the pure water inlet 22 is connected to the second water inlet 121 .

[0054] The fine filter element 2 can finely filter the raw water filtered by the first filter unit 11. The filtered pure water flows into the second filter unit 12 through the pure water port 22 and the second water inlet 121 for re-filtration to ensure water quality.

[0055] The fine filter element 2 has higher filtration accuracy than the pre-filter element 1. The fine filter element 2 is arranged downstream of the first filter unit 11 and can further purify the raw water filtered by the first filter unit 11 with high precision. It is the core treatment filter element of the water production device.

[0056] The specific form, for example, the fine filter element 2 can be a reverse osmosis membrane filter element (RO filter element), a nanofiltration membrane filter element, etc., which is selected according to the filtering requirements and is not specifically limited in this embodiment.

[0057] Since the particle size of the fine filter element 2 is very small and the resistance of raw water passing through is relatively large, a pressure-stabilizing pump 108 is provided on the water production pipeline connecting the first filter unit 11 and the fine filter element 2 to increase the pressure of the raw water so that it passes through the fine filter element 2 and improves the filtering efficiency.

[0058] In some embodiments, a second water inlet valve 107 is further provided on the water production pipeline connecting the first filter unit 11 and the fine filter element 2 , and the second water inlet valve 107 is located upstream of the pressure-stabilizing pump 108 .

[0059] The second water inlet valve 107 can control and regulate the raw water flowing to the fine filter element 2, and can also cut off the water pipeline when the water purification system stops working to prevent the raw water from continuing to flow into the fine filter element 2 and causing damage to the filter element.

[0060] As shown in the figure, in some embodiments, the fine filter element 2 further has a wastewater outlet 23, and the water production device further includes a wastewater pipeline 800, and the wastewater pipeline 800 is connected to the wastewater outlet 23.

[0061] When the fine filter element 2 is filtering, corresponding wastewater will be generated. The wastewater will flow into the wastewater pipeline 800 through the wastewater port 23 and be discharged to the outside through the wastewater pipeline 800.

[0062] A wastewater valve 801 is provided on the wastewater pipeline 800 to control the connection or disconnection of the wastewater pipeline 800.

[0063] The water storage unit 3 is used to store filtered purified water, which is convenient for users to use and can avoid the water production device from running for a long time.

[0064] The water storage unit 3 is a device with its own water discharge driving force, for example, it can be a pressure barrel, or a water storage device with a self-priming pump or a water pump.

[0065] The heating unit 6 can heat the purified water to boiling. For example, the heating unit 6 can be a hot tank or a water storage device with a built-in heating element.

[0066] The heat exchange unit 5 can specifically be a heat exchanger. During heat exchange, the boiling water of the heating unit 6 flows into the second heat exchange channel, and the normal temperature water of the water storage unit 3 flows into the first heat exchange channel. The heat of the boiling water is transferred to the normal temperature water in the first heat exchange channel through radiation, thereby realizing the heat exchange of the boiling water into hot water of a preset value.

[0067] It should be noted here that the preset value can be set according to the hot water temperature required by the heat regeneration mode. The preset value can be a specific temperature value or a temperature range value. For example, the preset value can be 45℃±5℃, but is not limited to this.

[0068] The heat regeneration pipeline 200 is used to flow the hot water after heat exchange to the pre-filter element 1 to achieve thermal regeneration. The heat regeneration pipeline 200 can be specifically sealed with the first water outlet 112, or the heat regeneration pipeline 200 is connected to the water supply pipeline between the first filter unit 11 and the fine filter element 2. It should be noted that when the heat regeneration pipeline 200 is connected to the water supply pipeline between the first filter unit 11 and the fine filter element 2, its connection point is located upstream of the second water inlet valve 107 to prevent the hot water in the heat regeneration pipeline 200 from flowing back to the fine filter element 2 and damaging it.

[0069] In some embodiments, a regeneration valve 201 is provided on the heat regeneration pipeline 200, and the regeneration valve 201 is used to control the on-off of the heat regeneration pipeline 200. The regeneration valve 201 is opened when the water purification system executes the heat regeneration mode and is closed when the water purification system is working on water purification.

[0070] In some embodiments, a check valve 202 is also provided on the heat regeneration pipeline 200. The check valve 202 is provided downstream of the regeneration valve 201. The check valve 202 can allow the hot water in the heat regeneration pipeline 200 to flow to the pre-filter element 1 and block the raw water flowing out of the pre-filter element 1 to prevent it from flowing back to the heat regeneration pipeline 200.

[0071] The regeneration drainage pipeline 500 is used to discharge the hot water after flushing in the pre-filter element 1, so that the hot water for flushing the pre-filter element 1 remains in a flowing state to ensure the thermal regeneration effect of the pre-filter element 1.

[0072] The regeneration drainage pipeline 500 can be specifically connected to the first water inlet 111 in a sealed manner, or the regeneration drainage pipeline 500 can be connected to the water supply pipeline upstream of the pre-filter element 1. It should be noted that when the regeneration drainage pipeline 500 is connected to the water supply pipeline upstream of the pre-filter element 1, the connection point is located downstream of the first water inlet valve 104. When the first water inlet valve 104 is closed, tap water can also be prevented from flowing into the regeneration drainage pipeline 500.

[0073] In some embodiments, the regeneration drain pipeline 500 is provided with a regeneration drain valve 501 , which is opened when drainage is required and closed when the water purification system is purifying water, to ensure the normal operation of the water purification system.

[0074] In some embodiments, the water purification system further includes a flow sensor 105, which is disposed in the water purification pipeline 100. The flow sensor 105 is used to control the control valve group to switch to the first state when it detects that the purified water volume of the water purification system reaches a preset nominal value.

[0075] The water flow of the water purification pipeline 100 is detected in real time by the flow sensor 105. When it is detected that the purified water volume of the water purification system reaches the preset nominal value, the control valve group is controlled to switch to the first state to realize hot flushing regeneration of the pre-filter element 1 and realize automatic control switching.

[0076] Specifically, the current water purification volume of the water purifier is calculated through the flow detection data of the flow sensor 105. After central processing, the current water purification volume and the preset nominal value (total water purification volume value) are compared and analyzed to determine whether the pre-filter element 1 needs to be hot-flushed and regenerated. If necessary, the solenoid valve group is controlled to switch to the first state.

[0077] The working principle of the flow sensor 105: There is a rotating impeller with magnetic poles inside it. The rotating impeller rotates under the action of water flow. There is a Hall sensor inside the flow sensor 105 that senses the change of magnetic poles. The central processing unit determines the amount of water purified by the water purifier by judging the number of pulse signals of its magnetic pole changes.

[0078] For example, the flow sensor 105 may be disposed on the purified water pipeline 100 upstream of the pre-filter element 1 , but is not limited thereto.

[0079] After the pre-filter element 1 is hot-flushed, hot water remains in it and the temperature is relatively high. In order to protect the rear-end components that are not resistant to high temperatures (such as the fine filter element 2), the pre-filter element 1 needs to be flushed and cooled. Therefore, in some embodiments, the control valve group also has a second state in which the water storage unit 3 and the thermal regeneration pipeline 200 are connected. Based on the completion of the reverse hot-flushing regeneration of the pre-filter element 1, the control valve group switches to the second state, so that the normal temperature water in the water storage unit 3 flows through the thermal regeneration pipeline 200, the first water outlet 112, the pre-filter element 1, the first water inlet 111 and the regeneration drainage pipeline 500 to achieve flushing and cooling of the pre-filter element 1.

[0080] When the reverse hot flushing and regeneration of the pre-filter element 1 is completed, the control valve group is switched to the second state to connect the water storage unit 3 and the hot regeneration pipeline 200, so that the normal temperature water in the water storage unit 3 flows through the hot regeneration pipeline 200 and the first water outlet 112 into the pre-filter element 1 to achieve flushing and cooling of the pre-filter element 1, and the cooled water is discharged through the first water inlet 111 and the regeneration drain pipeline 500, thereby quickly replacing the hot water remaining in the hot regeneration of the pre-filter element 1, achieving rapid cooling of the pre-filter element 1, reducing the waiting time for users to get water, and preventing hot water from flowing into the rear end fine filter element 2 to damage it and shorten its life.

[0081] In some embodiments, the water purification system also includes a warm water pipeline 400, which is connected to the outlet of the second heat exchange channel and the inlet of the heat regeneration pipeline 200. The warm water pipeline 400 is connected to a warm water intake 401 and a disinfection drainage pipeline 700. The control valve group also has a third state of connecting the heating unit 6 and the warm water pipeline 400. Based on the water purification system being in a disinfection and sterilization mode, the control valve group switches to the third state to allow the boiling water of the heating unit 6 to flow into the warm water pipeline 400 for high-temperature sterilization and be discharged through the disinfection drainage pipeline 700.

[0082] When the water purification system is in the disinfection and sterilization mode, the control valve group switches to the third state to connect the heating unit 6 and the warm water pipe 400, so that the boiling water of the heating unit 6 flows into the warm water pipe 400 to achieve high-temperature sterilization and disinfection of the warm water pipe 400, and finally discharged through the disinfection drainage pipe 700 to ensure that the user's drinking water is healthy.

[0083] Furthermore, a disinfection drain valve 701 is provided on the disinfection drain pipeline 700 . The disinfection drain valve 701 is opened only when the water purification system is in the disinfection mode to discharge the boiled water in the warm water pipeline 400 that has been sterilized.

[0084] It should be noted that since the warm water pipe 400 is connected to the outlet of the second heat exchange channel and the inlet of the heat regeneration pipe 200, when the pre-filter element 1 needs to be hot-flushed and regenerated, the warm water inlet 401 is closed and the control valve group is switched to the first state to connect the water storage unit 3 and the first heat exchange channel, so that the boiling water of the heating unit 6 flows into the second heat exchange channel and exchanges heat with the normal temperature water from the water storage unit 3 in the first heat exchange channel to form a preset value of hot water. The hot water flows through the warm water pipe 400, the heat regeneration pipe 200, and the first water outlet 112 into the pre-filter element 1 for hot flushing.

[0085] It can be understood that when the user needs to use warm water, the regeneration valve 201 is closed and the control valve group is switched to the first state to connect the water storage unit 3 and the first heat exchange channel, so that the boiling water of the heating unit 6 flows into the second heat exchange channel and exchanges heat with the normal temperature water from the water storage unit 3 in the first heat exchange channel to form hot water of a preset value. The hot water flows through the warm water pipeline 400 to the warm water inlet 401 for the user to use.

[0086] That is to say, when the control valve group of the present application is switched to the first state, it can be used to take warm water, and can also be used to perform hot flushing and regeneration of the pre-filter element 1, and the two states can operate independently of each other, or can operate simultaneously, that is, when performing hot flushing and regeneration of the pre-filter element 1, the warm water intake port 401 can also be opened to take warm water.

[0087] In some embodiments, the control valve group includes a first solenoid valve 101, a second solenoid valve 102 and a third solenoid valve 103, wherein the inlet of the first solenoid valve 101 is connected to the water storage unit 3, the outlet of the first solenoid valve 101 is connected to the first heat exchange channel, the inlet of the second solenoid valve 102 is connected to the water storage unit 3, the outlet of the second solenoid valve 102 is connected to the warm water pipeline 400, the inlet of the third solenoid valve 103 is connected to the heating unit 6, and the outlet of the third solenoid valve 103 is connected to the inlet of the second solenoid valve 102. Based on the control valve group being in the first state, the first solenoid valve 101 is opened, based on the control valve group being in the second state, the second solenoid valve 102 is opened, and based on the control valve group being in the third state, the second solenoid valve 102 and the third solenoid valve 103 are both opened, so that the boiling water of the heating unit 6 flows through the second solenoid valve 102 and the third solenoid valve 103 into the warm water pipeline 400 and is discharged through the disinfection drainage pipeline 700.

[0088] When the control valve group is in the first state, the first solenoid valve 101 is opened, and the normal temperature water of the water storage unit 3 flows through the first solenoid valve 101 into the first heat exchange channel, while the boiling water of the heating unit 6 flows into the second heat exchange channel and exchanges heat with the normal temperature water in the first heat exchange channel to form hot water of a preset value to hot-wash the pre-filter element 1; when the control valve group is in the second state, the second solenoid valve 102 is opened, and the normal temperature water of the water storage unit 3 flows through the second solenoid valve 102, the warm water pipeline 400, and the heat regeneration pipeline 200 to enter the pre-filter element 1 for flushing and cooling it; when the control valve group is in the third state, the second solenoid valve 102 and the third solenoid valve 103 are both opened, so that the boiling water of the heating unit 6 flows through the second solenoid valve 102 and the third solenoid valve 103 into the warm water pipeline 400 for high-temperature sterilization and disinfection, and then discharged through the disinfection drainage pipeline 700.

[0089] Of course, in other embodiments, the control valve group can also be set as a multi-channel valve, the multi-channel valve having a first channel, a second channel and a third channel, the first channel is connected to the first heat exchange channel and the water storage unit 3, the second channel is connected to the water storage unit 3 and the warm water pipeline 400, and the third channel is connected to the heating unit 6 and the second channel. When the control valve group is in the first state, the first channel is connected, when the control valve group is in the second state, the second channel is connected, and when the control valve group is in the third state, both the second channel and the third channel are connected.

[0090] Since the normal temperature of the water in the water storage unit 3 is constant (consistent with the environment), and the boiling water temperature of the heating unit 6 is constant, the hot water after heat exchange in the heat exchange unit 5 is generally at a specific temperature. Factors such as changes in ambient temperature are likely to affect the hot water after heat exchange in the heat exchange unit 5 and not be at a preset value. Based on this, in some embodiments, the water purification system also includes a temperature control device, which is used to adjust the temperature of the hot water flowing out of the second heat exchange channel to reach a preset value.

[0091] In some embodiments, the temperature control device includes a temperature control pipeline 600 and a temperature control valve 601, wherein the two ends of the temperature control pipeline 600 are respectively connected to the heating unit 6 and the warm water pipeline 400, and the temperature control valve 601 is set in the temperature control pipeline 600. The temperature control valve 601 is used to open when it is detected that the temperature of the hot water in the warm water pipeline 400 is lower than a preset value, so that the boiling water in the heating unit 6 flows through the temperature control pipeline 600 and flows into the warm water pipeline 400.

[0092] The hot water after heat exchange in the heat exchange unit 5 flows into the warm water pipe 400. When the temperature of the warm water taken by the user is lower than the preset value or the temperature of the hot water for hot flushing the pre-filter 1 is lower than the preset value, the temperature regulating valve 601 is opened to allow the boiling water of the heating unit 6 to flow into the warm water pipe 400 through the temperature regulating pipe 600 and mix with the hot water therein to increase the temperature of the hot water to reach the preset value.

[0093] It is understandable that when the user needs to increase the temperature of the warm water used, or needs to increase the temperature of the hot water for hot flushing the pre-filter 1, that is, the preset value needs to be increased, the temperature regulating valve 601 can be opened to allow boiling water to enter the warm water pipeline 400 through the temperature regulating pipeline 600 and mix with the hot water after heat exchange to achieve the purpose of raising its temperature.

[0094] In this embodiment, the heating water outlet 62 is connected to the boiling water inlet 301 through the boiling water pipeline 300, the inlet of the second heat exchange channel is connected to the boiling water inlet pipeline, and one end of the temperature regulating pipeline 600 is connected to the boiling water pipeline 300.

[0095] like Figure 3 、 Figure 7 and Figure 6 As shown, a boiling water solenoid valve 302 is provided at the boiling water inlet 301 to control the opening or closing of the boiling water inlet 301 through the boiling water solenoid valve 302. Correspondingly, a warm water solenoid valve 402 is provided at the warm water inlet 401 to control the opening or closing of the warm water inlet 401 through the warm water solenoid valve 402. The boiling water inlet 301 and the warm water inlet 401 are arranged side by side on the housing 900 of the water purifier, so that users can take boiling water or warm water according to their needs.

[0096] Due to the failure of the seal at the connection of the water purification pipeline 100 of the whole machine, the long-term water leakage of the whole machine causes the flow sensor 105 to detect distorted and inaccurate data, resulting in an erroneous judgment and initiating the hot flushing regeneration of the pre-filter 1, leading to unnecessary accidents. Based on this, in some embodiments, the water purification system also includes a pipeline detection device, which is used to detect the leakage and blockage of the water purification pipeline 100, and to provide timely feedback on the leakage and blockage of the water purification pipeline 100, reminding the background personnel to perform timely inspection and maintenance.

[0097] In some embodiments, the pipeline detection device includes a first pressure switch 106, which is arranged in the clean water pipeline 100. When the pressure of the first pressure switch 106 is lower than the first pressure value and is in a closed state, it is determined that the clean water pipeline 100 is leaking.

[0098] When the pressure of the first pressure switch 106 is lower than the first pressure value and is in a closed state, it means that there is no water flow through the position of the first pressure switch 106 or a leak occurs in front of the first pressure switch 106, resulting in insufficient water pressure, thereby concluding that there is a water leak in the water purification pipeline 100.

[0099] Specifically, the first pressure switch 106 is a low-pressure switch, which is in a closed state when the pressure is lower than 0.15Mpa±0.05Mpa. When the water purification pipeline 100 is normally filled with water, the pressure of the first pressure switch 106 is at 0.25Mpa±0.05Mpa and is in an open state, facilitating water flow.

[0100] The first pressure switch 106 can be set on the clean water pipeline 100 between the pre-filter element 1 and the fine filter element 2 to facilitate the detection of whether there is water leakage at the front end of the clean water pipeline 100, but is not limited thereto.

[0101] In some embodiments, the pipeline detection device also includes a second pressure switch 502, which is arranged in the regeneration drainage pipeline 500. According to the pressure of the second pressure switch 502 being higher than the second pressure value and being in the open state, it is determined that the clean water pipeline 100 is blocked.

[0102] When the pressure of the second pressure switch 502 is higher than the second pressure value and is in the open state, it means that the clean water pipeline 100 behind the second pressure switch 502 is blocked, resulting in excessive pressure at the position of the second pressure switch 502, causing it to open to release pressure and allow water to flow through. It is concluded that the clean water pipeline 100 is blocked.

[0103] Specifically, the second pressure switch 502 is a high-pressure switch, which is in an open state when the pressure is higher than 0.25 MPa±0.05 MPa so as to release the pressure in time when the water purification pipeline 100 is blocked.

[0104] It should be noted that when the pre-filter element 1 is subjected to hot flushing and regeneration, the second pressure switch 502 is in an open state to facilitate the discharge of hot water through the regeneration drainage pipeline 500 .

[0105] In some embodiments, the water purification system further includes a pre-filter, which is disposed at the water inlet end of the water purification pipeline 100 and is used for primary physical filtration of the raw water.

[0106] Taking into account the different water quality in different areas of use, the water may contain a large amount of large particles of debris such as mud, stones, etc. If it is directly connected to the water purifier without physical filtration, a large amount of mud and sand will flow in, causing the entire machine and its filter element to be blocked, resulting in a rapid decrease in the service life of the filter element, greatly reducing the service life of the entire machine. Therefore, this application adds a pre-filter at the water inlet end to perform the first physical filtration of mud and other debris, so as to improve the quality of the raw water entering the whole machine, remove large particles of impurities, and thus ensure the service life of the whole machine.

[0107] Specifically, the pre-filter may be a filter, but is not limited thereto.

[0108] In some embodiments, the water purifier also includes an Internet of Things communication module, which is connected to the water purification system. The Internet of Things communication module is used to connect to the cloud to upload the health data of the water purifier to the cloud.

[0109] Through the IoT communication module, users can effectively monitor the operating status of the water purifier and filter life data from the IoT platform, and can upload the health monitoring data of the entire machine to the cloud, so that back-end maintenance personnel can timely understand the usage of the water purifier and facilitate timely inspection and maintenance. At the same time, if the water purifier is used for public drinking water and there is a need to charge for drinking water, it can also use its IoT function to realize online payment and then draw water for drinking.

[0110] Although the water storage unit 3 stores purified pure water, the water quality will change if the storage time is too long, such as precipitation. Based on this, in some embodiments, the water purification system also includes a post-filter element 4, which is arranged between the water storage unit 3 and the heat exchange unit 5. The post-filter element 4 can filter the pure water flowing out of the water storage unit 3 again to improve the water quality.

[0111] It should be noted that in order to prevent the water in the water storage unit 3 or the boiling water in the heating unit 6 from flowing back into the second filter unit 12 of the pre-filter 1, a one-way valve can be set on the clean water pipeline 100 between the second water outlet 122 and the water storage unit 3. The one-way valve only allows the clean water from the second water outlet 122 to flow to the water storage unit 3 and prevents water from flowing back to the second water outlet 122.

[0112] In order to facilitate the understanding of the water purification system of this embodiment, the following Figure 1 To the attached Figure 7 , its working process is introduced as follows:

[0113] When the water purification system is in normal use, the raw water flows into the purified water pipeline 100, first flows into the first filter unit 11 of the pre-filter element 1 for primary filtration to filter out large particles of impurities such as mud and sand in the water, then flows into the fine filter element 2 for deep filtration to filter out odor and color in the water, and then flows into the second filter unit 12 of the pre-filter element 1 for further filtration to adjust the water quality and taste, and finally flows into the water storage unit 3 for storage, or flows to the heating unit 6 to be heated into boiling water. When the user takes boiling water, the boiling water inlet 301 can be opened, and the boiling water flows from the heating outlet 62 through the boiling water pipeline 300 to the boiling water inlet 301. When the user takes warm water, the warm water inlet 401 can be opened, and the boiling water in the heating unit 6 flows into the second heat exchange channel and the normal temperature water from the water storage unit 3 in the first heat exchange channel for heat exchange and forms a preset value of hot water, and the hot water flows through the warm water pipeline 400 to the warm water inlet 401.

[0114] like Figure 1As shown, when the flow sensor 105 detects that the purified water volume of the water purification system reaches a preset nominal value, the water purification system stops producing water, and the control valve group switches to the first state. The first solenoid valve 101, the regeneration valve 201, and the regeneration drain valve 501 are all opened, and the normal temperature water of the water storage unit 3 flows into the first heat exchange channel through the first solenoid valve 101 and exchanges heat with the boiling water from the heating unit 6 in the second heat exchange channel. If the temperature of the hot water after heat exchange is lower than the preset value, the thermostatic valve 601 is opened, and the boiling water flows into the warm water pipeline 400 through the thermostatic pipeline 600 to mix and heat the hot water. The hot water that reaches the preset value flows through the warm water pipeline 400, the hot regeneration pipeline 200, and the first water outlet 112 into the pre-filter element 1, and the pre-filter element 1 is hot-flushed and regenerated. The hot water after flushing flows into the regeneration drain pipeline 500 through the first water inlet 111 and is discharged;

[0115] like Figure 2 As shown, when the hot flushing of the pre-filter element 1 is completed, the control valve group is in the second state, the second solenoid valve 102, the regeneration valve 201, and the regeneration drain valve 501 are all opened, and the normal temperature water of the water storage unit 3 flows through the second solenoid valve 102, the warm water pipeline 400, the hot regeneration pipeline 200, and the hot regeneration pipeline 200 into the pre-filter element 1 to flush and cool the pre-filter element 1. The cooled water is discharged through the first water inlet 111 and the regeneration drain pipeline 500;

[0116] like Figure 3 As shown, when the water purification system is in the disinfection and sterilization mode, the control valve group switches to the third state, and the second solenoid valve 102, the third solenoid valve 103 and the disinfection drain valve 701 are all opened, so that the boiling water of the heating unit 6 flows through the second solenoid valve 102 and the third solenoid valve 103 into the warm water pipe 400 for high-temperature sterilization, and then is discharged through the disinfection drain pipe 700.

[0117] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by this application.

Claims

1. A water purifier, characterized in that: include: A water purification system comprises a pre-filter element (1), a water storage unit (3), a heating unit (6) and a heat exchange unit (5) which are sequentially connected to a water purification pipeline (100); the pre-filter element (1) comprises an activated carbon component; the pre-filter element (1) has a first water inlet (111) and a first water outlet (112); the water storage unit (3) and the first water outlet (112) are in communication; the heating unit (6) has a heating water inlet (61) and a heating water outlet (62); the heating water outlet (62) is connected to a boiling water intake (301); the heat exchange unit (5) has a first heat exchange channel and a second heat exchange channel; the two ends of the first heat exchange channel are respectively connected to the water storage unit (3) and the heating water inlet (61); and one end of the second heat exchange channel is connected to the heating water outlet (62); A heat regeneration device, comprising a heat regeneration pipeline (200), a regeneration drainage pipeline (500) and a control valve group, wherein one end of the heat regeneration pipeline (200) is connected to the other end of the second heat exchange channel, the other end of the heat regeneration pipeline (200) is connected to the first water outlet (112), and the regeneration drainage pipeline (500) is connected to the first water inlet (111); The control valve group has a first state for conducting the water storage unit (3) and the first heat exchange channel. When the purified water volume of the water purification system reaches a preset nominal value, the control valve group switches to the first state, so that the boiling water of the heating unit (6) flows into the second heat exchange channel and exchanges heat with the normal temperature water from the water storage unit (3) in the first heat exchange channel to form hot water of a preset value. The hot water flows through the heat regeneration pipeline (200), the first water outlet (112), the pre-filter element (1), the first water inlet (111) and the regeneration drainage pipeline (500) to achieve reverse hot flushing regeneration of the pre-filter element (1).

2. The water purifier according to claim 1, characterized in that: The water purification system further comprises a flow sensor (105), wherein the flow sensor (105) is arranged on the water purification pipeline (100), and the flow sensor (105) is used to control the control valve group to switch to the first state when detecting that the purified water volume of the water purification system reaches the preset nominal value.

3. The water purifier according to claim 1, characterized in that: The control valve group also has a second state for conducting the water storage unit (3) and the heat regeneration pipeline (200). Upon completion of the reverse hot flushing regeneration of the pre-filter element (1), the control valve group switches to the second state, so that the normal temperature water in the water storage unit (3) flows through the heat regeneration pipeline (200), the first water outlet (112), the pre-filter element (1), the first water inlet (111) and the regeneration drainage pipeline to flush and cool the pre-filter element (1).

4. The water purifier according to claim 3, characterized in that: The water purification system further comprises a warm water pipeline (400), wherein the warm water pipeline (400) is connected to the outlet of the second heat exchange channel and the inlet of the heat regeneration pipeline (200), and the warm water pipeline (400) is connected to a warm water intake (401) and a disinfection drainage pipeline (700); The control valve group also has a third state for conducting the heating unit (6) and the warm water pipeline (400). Based on the water purification system being in the disinfection and sterilization mode, the control valve group switches to the third state to allow the boiling water of the heating unit (6) to flow into the warm water pipeline (400) for high-temperature sterilization and then be discharged through the disinfection drainage pipeline (700).

5. The water purifier according to claim 4, characterized in that: The control valve group includes: a first solenoid valve (101), wherein an inlet of the first solenoid valve (101) is connected to the water storage unit (3), and an outlet of the first solenoid valve (101) is connected to the first heat exchange channel; a second solenoid valve (102), wherein the inlet of the second solenoid valve (102) is connected to the water storage unit (3), and the outlet of the second solenoid valve (102) is connected to the warm water pipeline (400); a third solenoid valve (103), wherein the inlet of the third solenoid valve (103) is connected to the heating unit (6), and the outlet of the third solenoid valve (103) is connected to the inlet of the second solenoid valve (102); Based on the control valve group being in the first state, the first solenoid valve (101) is opened; based on the control valve group being in the second state, the second solenoid valve (102) is opened; based on the control valve group being in the third state, both the second solenoid valve (102) and the third solenoid valve (103) are opened, so that the boiling water of the heating unit (6) flows through the second solenoid valve (102) and the third solenoid valve (103) into the warm water pipeline (400) and is discharged through the disinfection drainage pipeline (700).

6. The water purifier according to claim 4 or 5, characterized in that: The water purification system further includes a temperature regulating device, which is used to regulate the temperature of the hot water flowing out of the second heat exchange channel to reach the preset value.

7. The water purifier according to claim 6, characterized in that: The temperature control device comprises a temperature control pipeline (600) and a temperature control valve (601), wherein two ends of the temperature control pipeline (600) are respectively connected to the heating unit (6) and the warm water pipeline (400), and the temperature control valve (601) is arranged on the temperature control pipeline (600). The temperature control valve (601) is used to open when it is detected that the temperature of the hot water in the warm water pipeline (400) is lower than the preset value, so that the boiling water in the heating unit (6) flows through the temperature control pipeline (600) and flows into the warm water pipeline (400).

8. The water purifier according to any one of claims 1 to 5, characterized in that: The water purification system further comprises a pipeline detection device, which is used to detect water leakage or blockage in the water purification pipeline (100).

9. The water purifier according to claim 8, characterized in that: The pipeline detection device comprises a first pressure switch (106), which is arranged on the purified water pipeline (100). When the pressure of the first pressure switch (106) is lower than a first pressure value and is in a closed state, it is determined that the purified water pipeline (100) is leaking.

10. The water purifier according to claim 8, characterized in that: The pipeline detection device further comprises a second pressure switch (502), which is arranged in the regeneration drainage pipeline. When the pressure of the second pressure switch (502) is higher than a second pressure value and is in an open state, it is determined that the clean water pipeline (100) is blocked.

11. The water purifier according to any one of claims 1 to 5, characterized in that: The water purification system further comprises a pre-filter, which is arranged at the water inlet end of the water purification pipeline (100) and is used for performing primary physical filtration on the raw water.

12. The water purifier according to any one of claims 1 to 5, characterized in that: The water purifier also includes an Internet of Things communication module, which is connected to the water purification system. The Internet of Things communication module is used to connect to the cloud to upload the health data of the water purifier to the cloud.

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