Water purifier

Abstract

The invention provides a water purifier, and particularly relates to the field of water treatment equipment, the water purifier comprises: a water purification module, which comprises a purified water outlet end and a wastewater discharge end, and the wastewater discharge end is connected with a wastewater pipeline; the water inlet end of the heating module is communicated with the purified water outlet end; the water inlet end of the water outlet pipeline is connected with the water outlet end of the heating module, the water inlet end of the water outlet pipeline is further connected with a drainage pipeline, and the drainage pipeline is used for being communicated with a sewer pipeline together with a waste water pipeline; under the condition that the water outlet temperature of the water outlet pipeline is higher than the preset sterilization temperature, the water drainage pipeline is used for being conducted after water outlet of the water outlet pipeline is completed, so that water in the water outlet pipeline flows into the sewer pipeline through the water drainage pipeline. According to the application, the sterilization operation on the sewer line is combined with the daily water consumption behavior of the user, so that the sterilization operation is unconsciously and frequently carried out, the continuous cleanness and sanitation of the sewer line are ensured, bacteria are prevented from flowing back into the filter element of the water purification module through the wastewater pipeline, and the filter element is protected from being polluted.

Description

Technical Field

[0001] The present application relates to the field of water treatment equipment, and in particular to a water purifier. Background Art

[0002] As people's demands for a better quality of life continue to rise, safe and healthy drinking water has become a major concern. As a crucial component of ensuring water safety in homes and public spaces, the performance and reliability of water purification equipment directly impacts the health of users. However, in actual use, even with an efficient filtration system, there are still potential factors that can affect the water quality of water purification equipment.

[0003] As the primary channel for wastewater discharge within buildings, the sewer system carries a wide range of wastewater from areas like kitchens and bathrooms. This wastewater inevitably contains various microorganisms, including bacteria and viruses that can pose a threat to human health. Although the wastewater and water purification systems are designed to be independent to prevent cross-contamination, in practice, several factors can cause bacteria from the sewer to flow back through the wastewater pipe or enter the filter cartridge of the water purification module through other pathways, posing a threat to the water quality of the water purification module. Specifically, wastewater backflow can occur when the wastewater pipe pressure is unbalanced or when the seal is poor due to design flaws, improper construction, or inadequate maintenance. Furthermore, the lack of effective isolation between the wastewater pipe and the water purification equipment can also create a potential pathway for bacteria to enter the water purification system. Once these harmful bacteria enter the water purification module and attach to the filter cartridge, they not only reduce the filter's efficiency but can also multiply and grow, further contaminating the purified water, affecting the water quality of the water purification system and even endangering the health of users. Summary of the Invention

[0004] In order to solve at least one of the shortcomings of the above-mentioned prior art, the present application provides a water purifier, comprising:

[0005] A water purification module, comprising a purified water outlet and a wastewater outlet, wherein the wastewater outlet is connected to a wastewater pipeline;

[0006] A heating module, wherein the water inlet of the heating module is connected to the purified water outlet;

[0007] The water outlet pipe, the water inlet end of the water outlet pipe is connected to the water outlet end of the heating module, and the water inlet end of the water outlet pipe is also connected to the drainage pipe, and the drainage pipe is used to connect the sewer pipe together with the wastewater pipe; when the outlet water temperature of the water outlet pipe is higher than the preset sterilization temperature, the drainage pipe is used to be opened after the water outlet of the water outlet pipe is completed, so that the water in the water outlet pipe flows into the sewer pipe through the drainage pipe.

[0008] Optionally, the heating module includes a heating pipeline, a cold water pipeline, and a return pipeline connected end to end, the water outlet end of the heating module is formed between the heating pipeline and the cold water pipeline, the water inlet end of the heating module includes the water inlet end corresponding to the heating pipeline and the water inlet end corresponding to the cold water pipeline, and a hot water storage container is arranged between the heating pipeline and the return pipeline; the cold water pipeline and the return pipeline form a residual water recovery channel, and the residual water recovery channel is used to be connected after the water outlet pipeline completes water discharge, so that the water in the water outlet pipeline flows back to the hot water storage container along the residual water recovery channel.

[0009] Optionally, after the water outlet pipe has finished discharging water, the residual water recovery channel is used to be opened when the outlet water temperature of the water outlet pipe is lower than the preset sterilization temperature.

[0010] Optionally, a pumping element and a heating element are provided on the heating pipeline, the heating element is used to heat the water flowing through, and the hot water storage container is used to store the water heated by the heating element; the water outlet end of the heating module, the water inlet end of the water outlet pipeline, and the drainage pipeline are three-way connected; the drainage pipeline is used to be conducted in the first sterilization mode, and the pumping element is used to be in a working state in the first sterilization mode to pump out the water in the hot water storage container, flow through the heating element and flow into the sewer pipe through the drainage pipeline.

[0011] Optionally, in the first sterilization mode, the pumping element is configured to enter a non-working state when the pumped water volume reaches a preset water volume threshold.

[0012] Optionally, the heating pipeline, the cold water pipeline, and the return pipeline form a circulation channel, and the circulation channel is used to be conducted in the second sterilization mode. The pumping element is also used to be in a working state in the second sterilization mode to pump out the water in the hot water storage container, flow along the circulation channel through the heating element and return to the hot water storage container.

[0013] Optionally, a first temperature detection device is provided between the hot water storage container and the pumping element, and the detection result of the first temperature detection device indicates the temperature of water flowing out of the hot water storage container; the second sterilization mode is configured to be shut down when the detection result of the first temperature detection device indicates that the temperature of water flowing out of the hot water storage container is higher than a preset temperature threshold.

[0014] Optionally, the first sterilization mode is configured to be activated after the second sterilization mode is turned off.

[0015] Optionally, the second sterilization mode is used to start at a preset start time when the water outlet pipeline is cut off.

[0016] Optionally, the pumping element is further used to introduce water into the circulation channel through the water inlet end of the heating pipeline after the second sterilization mode is turned off, so that the hot water in the circulation channel returns to the hot water storage container.

[0017] By adopting the above technical solution, this application has the following beneficial effects:

[0018] The present application provides a water purifier, the water inlet end of the water outlet pipe of which is respectively connected to a heating module and a drainage pipe, and the drainage pipe is used to connect the wastewater pipe of the water purification module to the sewer pipe; when the water outlet temperature of the water outlet pipe is higher than the preset sterilization temperature, the drainage pipe is used to conduct after the water outlet pipe is completed, so that the water in the water outlet pipe flows into the sewer pipe through the drainage pipe. By setting the drainage pipe to be connected to the water outlet pipe, the sterilization operation of the sewer pipe is naturally combined with the user's daily hot water use behavior. Whenever the user uses hot water, the high temperature characteristics of the hot water are automatically used to introduce the hot water into the sewer pipe through the drainage pipe, thereby sterilizing the sewer pipe. Since users may use hot water frequently in their daily lives, this sterilization process can be carried out frequently and unconsciously without the user having to operate it specifically, ensuring the continuous cleanliness and hygiene of the sewer pipe, thereby preventing bacteria from flowing back into the filter element of the water purification module through the wastewater pipe, effectively protecting the filter element from contamination, and ensuring the safety and purity of the outlet water quality.

[0019] Other features and advantages of this application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, in which the same reference numerals generally represent the same components. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 This is a schematic diagram of the piping structure of a water purifier provided in an embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of the piping structure of another water purifier provided in an embodiment of the present application.

[0023] The following is a supplementary description of the accompanying drawings:

[0024] 1. Water purification module; 2. Purified water outlet; 3. Wastewater discharge; 4. Wastewater pipeline; 5. Water outlet pipeline; 6. Drainage pipeline; 7. Heating pipeline; 8. Cold water pipeline; 9. Return pipeline; 10. Hot water storage container; 11. Pumping element; 12. Heating element; 13. First temperature detection device; 14. Negative pressure valve; 15. Water outlet valve; 16. Drainage valve; 17. Second temperature detection device; 18. Hot water return valve; 19. First one-way valve; 20. Exhaust pipeline; 21. Exhaust valve; 22. Low water level probe; 23. High water level probe; 24. Cold water valve; 25. Hot water valve; 26. Second one-way valve. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of this application.

[0026] References to "one embodiment" or "embodiment" herein refer to specific features, structures, or characteristics that may be included in at least one implementation of the present application. Throughout the description of this application, it should be understood that the terms "upper," "lower," "top," and "bottom," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplification. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and are therefore not to be construed as limiting the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Thus, a feature designated "first" or "second" may explicitly or implicitly include one or more of such features. Furthermore, the terms "first," "second," etc. are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential sequence. It should be understood that such terms are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0027] refer to Figure 1-2 The present application provides a water purifier, including a water purification module 1, a heating module and a water outlet pipe 5; wherein the water purification module 1 includes a purified water outlet end 2 and a wastewater discharge end 3, the wastewater discharge end 3 is connected to the wastewater pipe 4 for discharging wastewater, the water inlet end of the heating module is connected to the purified water outlet end 2, the water inlet end of the water outlet pipe 5 is connected to the water outlet end of the heating module, and a water outlet valve 15 is provided on the water outlet pipe 5, which is used to control the water flow of the water outlet pipe 5.

[0028] Specifically, the water filtered by the water purification module 1 flows out from the water purification outlet 2 and enters the heating module. After being processed by the heating module, the water flows out through the water outlet pipe 5 for use by users. In specific implementation, the water purification module 1 serves as the water source treatment core of the entire water purifier, and includes multiple levels of filtering devices, such as a pre-filter for intercepting large particle impurities, an ultrafiltration membrane for removing bacteria, viruses and other microorganisms, and a reverse osmosis membrane for removing soluble salts and small molecular organic matter. Finally, the purified water flows out from the water purification outlet 2, and the wastewater is discharged through the wastewater discharge end 3 through the wastewater pipe 4. Specifically, the water purification module 1 includes a CPP composite filter element, a NF filter element and an MPF antibacterial composite filter element connected in series. The NF filter element is connected to the wastewater pipe, and the wastewater pipe is used to connect to the sewer pipe. The external water source first undergoes preliminary filtration through a CPP composite filter element to remove larger impurities and particles. The water then enters a NF filter element for further filtration. The NF filter element removes finer impurities and some dissolved matter, while allowing some beneficial substances, such as minerals, to pass through, achieving optimal purification. Wastewater generated during the NF filtration process is discharged through the wastewater pipeline. The filtered water then flows to the MPF antibacterial composite filter element, which performs the final treatment. The MPF antibacterial composite filter element has antibacterial properties, effectively inhibiting the growth and reproduction of bacteria and other microorganisms, further improving the safety and hygiene of the water. After three stages of filtration, the purified water exits the MPF antibacterial composite filter element and enters the subsequent pipeline system, where it can be heated by the heating module or used directly as cold water.

[0029] The water inlet end of the outlet pipe 5 is also connected to the drain pipe 6, which is used to connect to the sewer pipe together with the wastewater pipe 4; when the outlet water temperature of the outlet pipe 5 is higher than the preset sterilization temperature, the drain pipe 6 is used to be connected after the outlet pipe 5 has finished discharging water, so that the water in the outlet pipe 5 flows into the sewer pipe through the drain pipe 6. Specifically, a drain valve 16 is provided on the drain pipe 6, which is used to control the water flow of the drain pipe 6 to accurately control the timing of drainage; when the outlet pipe 5 has finished discharging water, if the outlet water temperature is higher than the preset sterilization temperature, the drain pipe 6 is connected to discharge the water in the outlet pipe 5 into the sewer pipe to achieve sterilization. Among them, the preset sterilization temperature is usually set between 60°C and 80°C.

[0030] Specifically, in the embodiment of the present application, by providing a drainage pipe 6 connected to the outlet pipe 5, the sterilization operation of the sewer pipe is naturally combined with the user's daily hot water use behavior. Whenever the user uses hot water, the high temperature characteristics of the hot water are automatically utilized to introduce the hot water into the sewer pipe through the drainage pipe 6, thereby sterilizing the sewer pipe. Since users may frequently use hot water in their daily lives, this sterilization process can be carried out frequently and unconsciously without the user having to specifically operate it, ensuring the continuous cleanliness and hygiene of the sewer pipe, thereby preventing bacteria from flowing back into the filter element of the water purification module 1 through the wastewater pipe 4, effectively protecting the filter element from contamination, and ensuring the safety and purity of the outlet water quality.

[0031] In one possible embodiment, the heating module includes a heating pipeline 7, a cold water pipeline 8, and a return pipeline 9 connected end to end. The water outlet of the heating module is formed between the heating pipeline 7 and the cold water pipeline 8. The water inlet of the heating module includes the water inlet corresponding to the heating pipeline 7 and the water inlet corresponding to the cold water pipeline 8. That is, the water inlet corresponding to the heating pipeline 7 and the water inlet corresponding to the cold water pipeline 8 are respectively connected to the purified water outlet 2 of the water purification module 1. The cold water pipeline 8 is used to directly transport unheated water to the water outlet pipeline 5 when cold water is needed to meet the user's demand for cold water. A hot water storage container 10 is provided between the heating pipeline 7 and the return pipeline 9; the cold water pipeline 8 and the return pipeline 9 form a residual water recovery channel. The residual water recovery channel is used to conduct after the water outlet pipeline 5 has completed water discharge, so that the water in the water outlet pipeline 5 flows back to the hot water storage container 10 along the residual water recovery channel. A negative pressure valve 14 is installed between the purified water outlet 2 of the water purification module 1 and the corresponding water inlet of the heating pipeline 7. The negative pressure valve 14 is used to control the water inlet switch and the water flow rate. The negative pressure valve 14 works in conjunction with the pumping element 11 to ensure that the amount of water entering the heating pipeline 7 meets the heating requirements, thereby ensuring the stability of the outlet water temperature and heating efficiency. A hot water return valve 18 is installed on the return pipeline 9 to control the water flow.

[0032] In a specific implementation, the cold water and hot water can share a common pipeline. When the user needs to discharge cold water, cold water enters through the cold water pipeline 8 and flows out from the water outlet pipeline 5 to realize the supply of cold water. In this way, the pipeline from the faucet to the water purifier can be saved. In this way, the faucet space occupied by the pipeline is smaller, the faucet is better designed, and can also be made smaller. In this case, a cold water valve 24 is set between the purified water outlet end 2 of the water purification module 1 and the water inlet end corresponding to the cold water pipeline 8. It is also possible to set a water outlet pipeline 5 for discharging cold water and a water outlet pipeline 5 for discharging hot water separately, and set a cold water valve 24 on the water outlet pipeline 5 for discharging cold water, and set a hot water valve 25 on the water outlet pipeline 5 for discharging hot water. The hot water valve 25 is used to control the output of hot water, and the cold water valve 24 is used to control the output of cold water. In this case, a second one-way valve 26 is provided between the purified water outlet 2 of the water purification module 1 and the corresponding water inlet of the cold water pipeline 8 . The second one-way valve 26 is used to limit the water flow to flow only from the purified water outlet 2 to the cold water pipeline 8 .

[0033] Optionally, after the outlet pipe 5 has finished discharging water, the residual water recovery channel is configured to be opened when the outlet water temperature of the outlet pipe 5 is lower than a preset sterilization temperature. Specifically, after the outlet pipe 5 has finished discharging water, the system will determine the outlet water temperature. If the temperature is lower than the preset sterilization temperature, the residual water recovery channel is opened. Due to the pressure difference, the remaining water in the outlet pipe 5 flows back into the hot water storage container 10 along the channel formed by the cold water pipe 8 and the return pipe 9. In a specific implementation, the drain pipe 6 can be controlled to be closed and the residual water recovery channel opened when the outlet water temperature exceeds the preset sterilization temperature as needed.

[0034] In a specific embodiment, the hot water storage container 10 is a vacuum heat storage tank with a double-layer stainless steel structure. A vacuum process is used between the double-layer structure, which has an excellent heat preservation effect. An exhaust line 20 is provided on the hot water storage container 10, and an exhaust valve 21 is provided on the exhaust line 20. The exhaust valve 21 is used to open when water is entering or leaving the hot water storage container 10 to balance the atmospheric pressure and facilitate water inflow and outflow. When the exhaust valve 21 is open, the water in the hot water storage container 10 can be pumped into the heating pipeline 7 by the pumping element 11. When the exhaust valve 21 is closed, the water in the hot water storage container 10 cannot be pumped by the pumping element 11, that is, it cannot enter the heating pipeline 7. A first one-way valve 19 is provided between the water outlet of the hot water storage container 10 and the water inlet of the heating pipe 7 to control the direction of water flow so that water can only flow from the water outlet of the hot water storage container 10 to the water inlet of the heating pipe 7, thereby preventing cold water from the clean water outlet 2 connected to the water inlet of the heating pipe 7 from directly entering the hot water storage container 10.

[0035] Specifically, in the embodiment of the present application, a residual water recovery channel is provided to connect the water outlet pipe 5 and the hot water storage container 10. After the cold water or hot water is discharged, the water outlet pipe 5 and the residual water recovery channel can be opened, and the stored water in the pipe can flow naturally into the hot water storage container 10 of the whole machine by gravity, thereby reducing the bacterial contamination of the first cup of water, and the water temperature of the first cup of water is more accurate. After the hot water is discharged, the cold water pipe 8 is also sterilized.

[0036] In one possible embodiment, the heating pipeline 7 is provided with a pumping element 11 and a heating element 12. The heating element 12 is used to heat the water flowing through it, and the hot water storage container 10 is used to store the water heated by the heating element 12. Specifically, the pumping element 11 is typically a water pump, which is used to transport water from the water purification module 1 or the hot water storage container 10 to the heating pipeline 7. The heating element 12 uses high-efficiency heating technology, such as an electric heating tube or an instant heating device, to heat the flowing water to a set temperature in a short time. The technical solution of separating the heating body and the heat storage device, that is, the heating element 12 and the hot water storage container 10, achieves an excellent thermal insulation effect.

[0037] Specifically, the hot water storage container 10 is disposed between the heating line 7 and the return line 9 to store hot water. Its capacity is determined by the design requirements of the water purifier and can store a certain amount of hot water heated by the heating element 12 to meet the user's continuous hot water needs.

[0038] The hot water storage container 10 is equipped with a low water level probe 22 for detecting whether the water level in the hot water storage container 10 has reached a first preset water level, and a high water level probe 23 for detecting whether the water level in the hot water storage container 10 has reached a second preset water level. When the low water level probe 22 detects that the water level in the hot water storage container 10 is below the first preset water level, water is added to the hot water storage container 10. Water addition to the hot water storage container 10 is stopped when the high water level probe 23 detects that the water level in the hot water storage container 10 is above the second preset water level. For example, when the hot water storage container 10 is empty and unused, the water outlet valve 15 is closed, and the negative pressure valve 14, pumping element 11, heating element 12, hot water return valve 18, and exhaust valve 21 are opened in sequence to add water to the hot water storage container 10. Once the hot water storage container 10 is detected to be full, the negative pressure valve 14 is closed.

[0039] Specifically, the heating element 12 has a relatively large power and can adjust its own power according to the target water outlet temperature to quickly heat the water to the set temperature. However, due to the limited power and volume of the heating element 12, when the flow rate is too large and the required temperature rise is too high, even if the heating element 12 is running at maximum power, the water cannot be heated to the specified temperature. In view of this, when discharging water below the second preset temperature (for example, 50°C), the water outlet of the purified water outlet end 2 is directly introduced into the heating pipe 7 and heated by the heating element 12 to discharge water; when discharging hot water above the second preset temperature and below the first preset temperature (for example, 50°C to 70°C), the water outlet of the purified water outlet end 2 is mixed with the water in the hot water storage container 10 and then heated by the heating element 12; when discharging water above the first preset temperature (for example, above 70°C), the hot water in the hot water storage container 10 is used, and then further heated by the heating element 12 to reach the target water outlet temperature. Specifically, with Figure 1 For example, when discharging hot water below the second preset temperature, the negative pressure valve 14, pumping element 11, heating element 12, and outlet valve 15 are opened, and the power of heating element 12 is adjusted based on the target outlet water temperature. Closing the exhaust valve 21 prevents hot water from the hot water storage container 10 from being pumped out by the pumping element 11, thereby preventing the outlet water from exceeding the user's desired outlet temperature. When discharging hot water above the second preset temperature but below the first preset temperature, the negative pressure valve 14, pumping element 11, heating element 12, exhaust valve 21, and outlet valve 15 are opened, and the power of heating element 12 is adjusted based on the target outlet water temperature. Opening the exhaust valve 21 reduces the pressure inside the hot water storage container 10, allowing the pumping element 11 to also pump some of the hot water from the hot water storage container 10, thereby increasing the outlet flow rate of the hot water. When discharging water above the first preset temperature, the pumping element 11, heating element 12, exhaust valve 21, and outlet valve 15 are opened, and the power of heating element 12 is adjusted based on the target outlet water temperature. The negative pressure valve 14 is closed here, so that the cold water from the purified water outlet 2 will not enter the heating pipe 7, avoiding the problem that the heating element 12 is not sufficiently powered and cannot heat the water, and the outlet water temperature does not reach the target outlet water temperature desired by the user. When the hot water in the hot water storage container 10 is exhausted, and the user still needs to use hot water higher than the second preset temperature, it will automatically switch to directly introduce the outlet water from the purified water outlet 2 into the heating pipe 7, and quickly heat the water through the heating element 12 before discharging the water to meet the user's hot water needs. Specifically, open the negative pressure valve 14, the pumping element 11, the heating element 12, and the outlet valve 15, and adjust the power of the heating element 12 according to the target outlet water temperature so that the outlet water temperature reaches the target outlet water temperature set by the user. Ensure the user's continuous water use.

[0040] The water outlet end of the heating module, the water inlet end of the water outlet pipe 5, and the drainage pipe 6 are three-way connected, and the three-way connection can be achieved through a three-way pipe joint; the drainage pipe 6 is used to be conducted in the first sterilization mode, and the pumping element 11 is used to be in a working state in the first sterilization mode to pump out the water in the hot water storage container 10, flow through the heating element 12 and flow into the sewer pipe through the drainage pipe 6.

[0041] Specifically, in the first sterilization mode, the drain valve 16 on the drain pipe 6 is opened, and the pumping element 11 is started at the same time. The pumping element 11 pumps out the hot water in the hot water storage container 10, and the hot water flows through the heating element 12 under the push of the pumping element 11. The heating element 12 heats the hot water again to ensure that the hot water reaches a sufficient temperature, for example, above 60°C, to effectively kill bacteria. Subsequently, the high-temperature hot water is discharged into the sewer pipe through the drain pipe 6, and the high-temperature hot water is used to sterilize and disinfect the sewer pipe, destroying the cell structure of bacteria, thereby achieving the purpose of sterilization. In a specific implementation, in the first sterilization mode, the heating element 12 can be controlled to be in a non-working state as needed, for example, the water temperature in the hot water storage container 10 is sufficient to achieve sterilization. In a specific implementation, the first sterilization mode can be started periodically, or it can be started by the user as needed.

[0042] Optionally, in the first sterilization mode, the pumping element 11 is configured to enter a non-operating state when the water pumped reaches a preset water volume threshold. Specifically, in the first sterilization mode, the pumping element 11 continuously pumps water from the hot water storage container 10. When the water pumped reaches a preset water volume threshold, such as a value pre-set based on the volume of the sewer pipe and sterilization requirements, the control system receives a corresponding signal, instructing the pumping element 11 to enter a non-operating state, i.e., to stop pumping water. This ensures that the amount of water discharged into the sewer pipe is appropriate, ensuring effective sterilization without excessive waste of water resources.

[0043] Specifically, in the embodiment of the present application, a drainage pipe 6 is introduced into the hot water storage container 10, and the water is discharged into the sewer pipe through the drainage pipe 6. The sewer pipe is sterilized and disinfected using high-temperature hot water to prevent the growth and reproduction of bacteria, and effectively prevent bacteria from flowing back into the filter element of the water purification module 1 through the wastewater pipe, thereby protecting the filter element from contamination and ensuring the safety and purity of the outlet water quality.

[0044] In one possible embodiment, the heating pipe 7, the cold water pipe 8, and the return pipe 9 form a circulation channel. The circulation channel is used to be open in the second sterilization mode. The pumping element 11 is also used to be in an operating state in the second sterilization mode to pump water out of the hot water storage container 10, flow through the heating element 12 along the circulation channel, and return to the hot water storage container 10. Specifically, in the second sterilization mode, the return pipe 9 is opened, forming a circulation channel consisting of the heating pipe 7, the cold water pipe 8, and the return pipe 9. At this time, the pumping element 11 is activated to pump hot water from the hot water storage container 10. The hot water flows through the heating element 12 under the push of the pumping element 11. The heating element 12 reheats the hot water to ensure that the hot water reaches a sufficient temperature, for example, 80°C, to effectively kill bacteria. Subsequently, the high-temperature hot water flows back to the hot water storage container 10 through the cold water pipe 8 and the return pipe 9, completing a cycle. During the circulation process, the water in the hot water storage container 10 is continuously pumped out and heated, so that the water temperature in the container is increased, thereby achieving reheating of the water in the hot water storage container 10.

[0045] In a specific implementation, when the temperature of the hot water in the hot water storage container 10 drops to a certain temperature, the water in the hot water storage container 10 needs to be reheated. During the reheating process of the water in the hot water storage container 10, the cold water pipe 8 is also sterilized at high temperature. The cold water pipe 8 also serves as a return water channel in this process. In traditional designs, it may be necessary to set up a dedicated return water pipe to achieve the circulation and return of hot water. However, in this design, the cold water pipe 8 is used as part of the return water channel, which saves the setting of a return water pipe, thereby reducing the cost of the entire machine, while also simplifying the system's pipeline layout and improving the system's compactness and aesthetics.

[0046] Specifically, in the embodiment of the present application, by allowing high-temperature hot water to flow in the circulation channel, the cold water pipeline 8 can be sterilized and disinfected comprehensively and thoroughly, effectively killing bacteria and microorganisms in the pipeline, preventing bacterial growth and reproduction, and ensuring the sanitation and safety of the water supply system; during the circulation process, the water in the hot water storage container 10 is reheated to meet the user's hot water needs.

[0047] In one possible embodiment, a first temperature detection device 13 is provided between the hot water storage container 10 and the pumping element 11. The detection result of the first temperature detection device 13 indicates the temperature of the water flowing out of the hot water storage container 10. The second sterilization mode is configured to be shut down when the detection result of the first temperature detection device 13 indicates that the temperature of the water flowing out of the hot water storage container 10 is higher than a preset temperature threshold. During the operation of the second sterilization mode, the first temperature detection device 13 continuously monitors the temperature of the water flowing out of the hot water storage container 10. When the detected water temperature is continuously higher than the preset temperature threshold, for example, 80°C, it indicates that the water in the hot water storage container 10 has been sufficiently heated and the cold water pipeline 8 has also been sterilized. At this time, the second sterilization mode is shut down and the operation of related components is stopped. The heating element 12 is used to adjust the heating power according to the detection results of the first temperature detection device 13 and the second temperature detection device 17.

[0048] In a specific implementation, after the water is replenished to the hot water storage container 10, the negative pressure valve 14 is closed. At this time, the water in the hot water storage container 10 circulates in the circulation channel, continuously flows through the heating element 12 for heating, and returns to the hot water storage container 10 through the cold water pipe 8 and the return pipe 9. This process continues until the first temperature detection device 13 detects that the temperature reaches or exceeds a certain temperature (for example, 80°C), and the circulation heating is stopped. A second temperature detection device 17 is provided at the water outlet end of the heating pipe 7. After the circulation heating is stopped, the negative pressure valve 14, the pumping element 11, the hot water return valve 18 and the exhaust valve 21 are opened to return the hot water in the pipeline to the hot water storage container 10. When the second temperature detection device 17 detects that the temperature is lower than a certain temperature (for example, 40°C), all loads are turned off.

[0049] Specifically, in the embodiment of the present application, by setting a first temperature detection device 13 to control the end of the second sterilization mode, the circulating heating can be stopped accurately when the temperature of the water flowing out of the hot water storage container 10 is higher than the preset temperature threshold, ensuring that the water in the hot water storage container 10 is fully heated to provide a stable hot water supply, thereby achieving simultaneous sterilization of the cold water pipeline 8 and ensuring the water quality safety of the entire water supply system.

[0050] In one possible embodiment, the first sterilization mode is configured to start after the second sterilization mode is turned off, ensuring that the water discharged into the sewer pipe is high-temperature water heated by the second sterilization mode, and using high-temperature water to effectively sterilize the sewer pipe.

[0051] Optionally, the second sterilization mode is designed to activate at a preset start time when the water outlet pipe 5 is shut off, including early morning hours (e.g., 4 or 5 o'clock), when the water temperature in the hot water storage container 10 drops above a certain temperature (e.g., 5°C), or when the predetermined sterilization time for the cold water pipe 8 is reached. The second sterilization mode is primarily used to reheat the water in the hot water storage container 10 and sterilize the cold water pipe 8 at high temperature during the heating process. For example, in the early morning hours, after a night of non-use, the water temperature in the hot water storage container 10 may have dropped, necessitating reheating to ensure the hot water supply temperature and sterilization effectiveness.

[0052] Specifically, in the embodiment of the present application, by setting the first sterilization mode to start after the second sterilization mode, it is ensured that the water discharged into the sewer pipe is high-temperature water that has been fully heated, thereby effectively killing bacteria in the sewer pipe.

[0053] In one possible embodiment, the pumping element 11 is further configured to introduce water into the circulation channel through the water inlet of the heating pipe 7 after the second sterilization mode is turned off, so that the hot water in the circulation channel returns to the hot water storage container 10. Specifically, after the second sterilization mode is turned off, to prevent hot water remaining in the cold water pipe 8 from causing burns to users when using cold water, cold water is used to displace the hot water in the pipe, thereby preventing burns. Specifically, after the second sterilization mode is turned off, the negative pressure valve 14, the pumping element 11, and the hot water return valve 18 are opened, allowing cold water flowing from the purified water outlet 2 to enter and flow through the heating pipe 7, gradually displacing the hot water in the pipe and pushing it back into the hot water storage container 10. This process lasts approximately 5 seconds, and the specific duration can be adjusted based on the length of the pipe and the speed of the water flow to ensure that the hot water in the pipe is fully displaced and returns to the hot water storage container 10, thereby lowering the water temperature in the cold water pipe 8 and preventing burns to users due to excessively high cold water temperatures.

[0054] Specifically, in the embodiment of the present application, after the second sterilization mode is turned off, cold water is introduced into the circulation channel, and the hot water in the circulation channel is pressed into the hot water storage container 10 by the inflow of cold water, thereby lowering the water temperature in the cold water pipeline 8 and preventing users from being scalded due to excessively high water temperature when using cold water.

[0055] In summary, the water inlet end of the water outlet pipe 5 of the water purifier of the present application is connected to the heating module and the drain pipe 6 respectively. The drain pipe 6 is used to connect to the sewer pipe together with the wastewater pipe 4 of the water purification module. When the outlet water temperature of the water outlet pipe 5 is higher than the preset sterilization temperature, the drain pipe 6 is used to conduct after the water outlet pipe 5 has finished discharging water, so that the water in the water outlet pipe 5 flows into the sewer pipe through the drain pipe 6. By setting the drain pipe 6 to be connected to the water outlet pipe 5, the sterilization operation of the sewer pipe is naturally combined with the user's daily hot water use behavior. Whenever the user uses hot water, the high temperature characteristics of the hot water are automatically utilized to introduce the hot water into the sewer pipe through the drain pipe 6, thereby sterilizing the sewer pipe. Since users may frequently use hot water in their daily lives, this sterilization process can be carried out frequently and unknowingly without the user having to operate it specifically, ensuring the continuous cleanliness and hygiene of the sewer pipes, thereby preventing bacteria from flowing back into the filter element of the water purification module 1 through the wastewater pipe 4, effectively protecting the filter element from contamination, and ensuring the safety and purity of the outlet water quality.

[0056] In this application, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal connection between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0057] It should be noted that the order of the embodiments of the present application described above is for descriptive purposes only and does not represent the superiority or inferiority of the embodiments. The above description describes specific embodiments, and other embodiments are also within the scope of the appended claims. In some cases, the actions or steps described in the claims can be performed in the order of different embodiments and can achieve the expected results. In addition, the processes depicted in the accompanying drawings do not necessarily require a specific order or a connection order to achieve the desired results. In some embodiments, multi-tasking parallel processing is also possible or may be advantageous.

[0058] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. The key points of each embodiment are the differences from other embodiments.

[0059] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A water purifier, characterized in that: include: A water purification module (1) comprises a purified water outlet (2) and a wastewater outlet (3), wherein the wastewater outlet (3) is connected to a wastewater pipeline (4); A heating module, wherein the water inlet of the heating module is connected to the purified water outlet (2); A water outlet pipe (5), the water inlet end of the water outlet pipe (5) is connected to the water outlet end of the heating module, the water inlet end of the water outlet pipe (5) is also connected to a drainage pipe (6), and the drainage pipe (6) is used to connect the wastewater pipe (4) and the sewer pipe together; when the outlet water temperature of the water outlet pipe (5) is higher than the preset sterilization temperature, the drainage pipe (6) is used to be connected after the water outlet of the water outlet pipe (5) is completed, so that the water in the water outlet pipe (5) flows into the sewer pipe through the drainage pipe (6).

2. The water purifier according to claim 1, characterized in that: The heating module comprises a heating pipeline (7), a cold water pipeline (8), and a return pipeline (9) connected end to end; the water outlet of the heating module is formed between the heating pipeline (7) and the cold water pipeline (8); the water inlet of the heating module comprises a water inlet corresponding to the heating pipeline (7) and a water inlet corresponding to the cold water pipeline (8); a hot water storage container (10) is provided between the heating pipeline (7) and the return pipeline (9); the cold water pipeline (8) and the return pipeline (9) form a residual water recovery channel, and the residual water recovery channel is used to conduct after the water outlet pipeline (5) has completed water discharge, so that the water in the water outlet pipeline (5) flows back into the hot water storage container (10) along the residual water recovery channel.

3. The water purifier according to claim 2, characterized in that: After the water outlet pipe (5) has finished discharging water, the residual water recovery channel is used to be opened when the outlet water temperature of the water outlet pipe (5) is lower than the preset sterilization temperature.

4. The water purifier according to claim 2, characterized in that: The heating pipe (7) is provided with a pumping element (11) and a heating element (12), the heating element (12) is used to heat the water flowing through, and the hot water storage container (10) is used to store the water heated by the heating element (12); the water outlet end of the heating module, the water inlet end of the water outlet pipe (5), and the drainage pipe (6) are connected in a three-way manner; the drainage pipe (6) is used to be conducted in the first sterilization mode, and the pumping element (11) is used to be in a working state in the first sterilization mode to pump out the water in the hot water storage container (10), flow through the heating element (12), and flow into the sewer pipe through the drainage pipe (6).

5. The water purifier according to claim 4, characterized in that: In the first sterilization mode, the pumping element (11) is configured to enter a non-working state when the pumped water volume reaches a preset water volume threshold.

6. The water purifier according to claim 4, characterized in that: The heating pipe (7), the cold water pipe (8), and the return pipe (9) form a circulation channel, and the circulation channel is used to be conducted in the second sterilization mode. The pumping element (11) is also used to be in a working state in the second sterilization mode to pump out water from the hot water storage container (10), flow along the circulation channel through the heating element (12), and return to the hot water storage container (10).

7. The water purifier according to claim 6, characterized in that: A first temperature detection device (13) is provided between the hot water storage container (10) and the pumping element (11), and a detection result of the first temperature detection device (13) indicates the temperature of water flowing out of the hot water storage container (10); the second sterilization mode is configured to be closed when the detection result of the first temperature detection device (13) indicates that the temperature of water flowing out of the hot water storage container (10) is higher than a preset temperature threshold.

8. The water purifier according to claim 7, characterized in that: The first sterilization mode is configured to be activated after the second sterilization mode is deactivated.

9. The water purifier according to claim 8, characterized in that: The second sterilization mode is used to start at a preset start time when the water outlet pipe (5) is cut off.

10. The water purifier according to claim 7, characterized in that: The pumping element (11) is also used to introduce water into the circulation channel through the water inlet end of the heating pipe (7) after the second sterilization mode is turned off, so that the hot water in the circulation channel returns to the hot water storage container (10).

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