Clean water dispenser

Abstract

The purification water dispenser comprises a water softening system, a water purification system and a hot water system, the water softening system is communicated with a raw water inlet of the purification water dispenser, the water purification system comprises a reverse osmosis filter element, a waste water backflow pipeline and a booster pump, and a water inlet of the reverse osmosis filter element is communicated with a first soft water outlet channel of the water softening system; a water inlet of the wastewater return pipeline is communicated with a wastewater port of the reverse osmosis filter element, a water outlet of the wastewater return pipeline is communicated with a water inlet of the reverse osmosis filter element, the booster pump is arranged between a first soft water outlet channel of the water softening system and the water inlet of the reverse osmosis filter element, and a water inlet of the hot water system is communicated with a water outlet of the reverse osmosis filter element. Through the arrangement, the water softening system firstly softens raw water to reduce the concentration of calcium and magnesium ions in water entering the reverse osmosis filter element, so that the calcium and magnesium ions are prevented from forming scale on the membrane surface of the reverse osmosis filter element, and the service life of the reverse osmosis filter element is further prolonged.

Description

Technical Field

[0001] This application relates to the field of water treatment technologies, and particularly to a water purifier and dispenser. Background Art

[0002] Water purifiers and dispensers usually are provided with reverse osmosis filters to purify raw water. By means of a semipermeable membrane, dissolved solids, salts, heavy metals, microorganisms and other pollutants in water are separated under high pressure. The accuracy can reach 0.0001 micrometers, which is one of the most effective water purification technologies currently.

[0003] However, in related technologies, the functions of water purifiers and dispensers are relatively single, resulting in a short service life of the reverse osmosis filter.

[0004] Application Content

[0005] An embodiment of this application provides a water purifier and dispenser, aiming to improve the problem of the short service life of the reverse osmosis filter.

[0006] To solve the above technical problems, an embodiment of this application provides a water purifier and dispenser, including:

[0007] A soft water system, which is communicated with the raw water inlet of the water purifier and dispenser;

[0008] A water purification system, including a reverse osmosis filter, a waste water return pipeline and a booster pump. The water inlet of the reverse osmosis filter is communicated with the first soft water outlet channel of the soft water system. The water inlet of the waste water return pipeline is communicated with the waste water outlet of the reverse osmosis filter. The water outlet of the waste water return pipeline is communicated with the water inlet of the reverse osmosis filter. The booster pump is arranged between the first soft water outlet channel of the soft water system and the water inlet of the reverse osmosis filter; and

[0009] A hot water system, the water inlet of which is communicated with the water outlet of the reverse osmosis filter. The hot water system is configured to provide hot water softened by the soft water system and purified by the water purification system to users.

[0010] In some embodiments, the waste water return pipeline includes:

[0011] A waste water return pipe, both ends of which are respectively communicated with the water inlet and the waste water outlet of the reverse osmosis filter; and

[0012] A waste water return control member, which is arranged on the waste water return pipe to control the flow rate in the waste water return pipe.

[0013] In some embodiments, the waste water return control member includes a waste water control valve, and the waste water control valve can adjust the flow rate in the waste water return pipe; or

[0014] The wastewater reflux control member includes a wastewater control plug.

[0015] In some embodiments, the water inlet end of the booster pump is communicated with the water outlet end of the wastewater reflux control member.

[0016] In some embodiments, the water purification system further includes:

[0017] A pure water reflux pipeline, one end of which is communicated with the water outlet of the reverse osmosis filter element, and the other end of which is communicated with the water inlet of the reverse osmosis filter element.

[0018] In some embodiments, the pure water reflux pipeline includes:

[0019] A pure water reflux pipe, one end of which is communicated with the water outlet of the reverse osmosis filter element, and the other end of which is communicated with the water inlet of the reverse osmosis filter element; and

[0020] A pure water reflux control member, which is arranged on the pure water reflux pipe and is used to control whether the pure water reflux pipe is in circulation.

[0021] In some embodiments, the pure water reflux control member includes a pure water reflux check valve.

[0022] In some embodiments, the water outlet of the pure water reflux pipeline is communicated with the water inlet end of the booster pump.

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

[0024] A pre-filter element, the water inlet of which is communicated with the first softened water outlet channel of the soft water system, and the water outlet of which is communicated with the water inlet end of the booster pump.

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

[0026] A resin tank; and

[0027] A soft water valve, the raw water inlet channel of which is communicated with the raw water inlet, the first softened water outlet channel of which is communicated with the water inlet of the reverse osmosis filter element, and the raw water inlet channel of which is communicated with the first softened water outlet channel through the resin tank.

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

[0029] A salt box assembly, which is communicated with the salt box connecting pipe of the soft water valve, and the salt box connecting pipe of the soft water valve is communicated with the sewage discharging connecting pipe of the soft water valve through the resin pipe.

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

[0031] Soft water quality detection component, and the soft water quality detection component is communicated with a first soft water outlet channel of the soft water valve.

[0032] In some embodiments thereof, the hot water system includes:

[0033] A hot water tank assembly, where an inlet of the hot water tank assembly is communicated with an outlet of the reverse osmosis filter element; and

[0034] A water pump, where an inlet end of the water pump is communicated with an outlet of the hot water tank assembly.

[0035] In some embodiments thereof, the hot water tank assembly includes:

[0036] A tank body;

[0037] A heating element, at least partially located inside the tank body; and

[0038] A temperature control element, at least partially located inside the tank body, and the temperature control element is used to detect the water temperature inside the tank body;

[0039] The water purifier further includes a control board, and the control board is electrically connected to the temperature control element and the heating element to control the heating element to operate according to the detection result of the temperature control element.

[0040] In some embodiments thereof, the water purification system further includes:

[0041] A waste water drainage pipeline, communicated with a waste water outlet of the reverse osmosis filter element, and used for discharging the concentrated water of the reverse osmosis filter element.

[0042] In some embodiments thereof, the waste water drainage pipeline includes:

[0043] A waste water drainage pipe, communicated with the waste water outlet of the reverse osmosis filter element; and

[0044] A waste water drainage valve, installed on the waste water drainage pipe.

[0045] In the water purifier according to the embodiments of the present application, by arranging a soft water system in front of the reverse osmosis filter element, the raw water is first softened by the soft water system to reduce the concentration of calcium and magnesium ions in the water entering the reverse osmosis filter element, thereby avoiding the formation of scale on the membrane surface of the reverse osmosis filter element, and further improving the service life of the reverse osmosis filter element. At the same time, a waste water return pipeline is arranged to perform secondary filtration on the concentrated water of the reverse osmosis filter element, thereby increasing the waste water ratio of the reverse osmosis filter element, and returning the concentrated water of the reverse osmosis filter element for reprocessing, reducing the amount of waste water finally discharged into the environment, and reducing the pollution and pressure on the environment. Description of the Drawings

[0046] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0047] Figure 1 Structural schematic diagram of an embodiment of the water purifying and drinking machine of the present application;

[0048] Figure 2 Structural schematic diagram of another perspective of an embodiment of the water purifying and drinking machine of the present application;

[0049] Figure 3 Structural schematic diagram of another perspective of an embodiment of the water purifying and drinking machine of the present application;

[0050] Figure 4 Water circuit diagram of an embodiment of the water purifying and drinking machine of the present application;

[0051] Figure 5 Water circuit diagram of another embodiment of the water purifying and drinking machine of the present application;

[0052] Figure 6 Water circuit diagram of another embodiment of the water purifying and drinking machine of the present application;

[0053] Figure 7 Structural schematic diagram of an embodiment of the hot water tank assembly of the present application;

[0054] Figure 8 Structural schematic diagram of another perspective of an embodiment of the hot water tank assembly of the present application;

[0055] Figure 9 For Figure 8 Cross-sectional view at A - A in;

[0056] Figure 10 Exploded view of an embodiment of the hot water tank assembly of the present application;

[0057] Figure 11 Structural schematic diagram of the soft water valve of an embodiment of the present application;

[0058] Figure 12 Cross-sectional structural schematic diagram of the soft water valve of an embodiment of the present application;

[0059] Figure 13 Exploded structural schematic diagram of the soft water valve of an embodiment of the present application.

[0060] Explanation of reference numerals:

[0061] 001, Water purification dispenser; 001a, Raw water inlet; 1A, Tap; 10, Housing assembly; 10A, Inner cavity; 002, Soft water system; 010, Resin tank; 020, Soft water valve; 021, Main valve body; 0211, Raw water inlet pipe; 0211A, Raw water inlet channel; 0212, First soft water outlet pipe; 0212A, First soft water outlet channel; 0213, Raw water outlet pipe; 0213A, Raw water outlet channel; 0214, Second soft water outlet pipe; 0214A, Second soft water outlet channel; 0215, First valve housing; 0215A, Main chamber; 0215B, First liquid passing channel; 022, Sub valve body; 0221, Second valve housing; 0221A, Fourth liquid passing channel; 0221B, Fifth liquid passing channel; 0221C, Sixth liquid passing channel; 0222, First tank connection pipe; 0222A, First tank channel; 0223, Second tank connection pipe; 0223A, Second tank channel; 0224, Salt box connection pipe; 0224A, Salt passing channel; 0225, Drainage connection pipe; 023, Spool assembly; 0231, Spool; 0232, Driving part; 024, Jet assembly; 030, Salt box assembly; 040, Soft water quality detection part; 004, Hot water system; 20, Hot tank assembly; 21, Tank body; 211, Tank body; 212, Tank top cover; 213, Tank bottom cover; 21a, Heating chamber; 22, Heating element; 221, Terminal; 23, Detection assembly; 232, Water level detection element; 233, High water level probe; 234, Low water level probe; 237, Temperature control element; 2371, Temperature control fixing plate; 2372, Temperature sensor; 2373, Second through hole; 251, Hot tank water replenishing valve; 30, Water pump; 003, Pure water system; 50, Filtration system; 52, Pre-filter element; 53, Reverse osmosis filter element; 54, Waste water drainage pipeline; 541, Waste water drain pipe; 542, Waste water drainage valve; 55, Waste water return pipeline; 551, Waste water return pipe; 552, Waste water return control part; 553, Waste water control valve; 554, Waste water control plug; 56, Pure water return pipeline; 561, Pure water return pipe; 562, Pure water return control part; 563, Pure water return one-way valve; 57, Pipeline machine; 003a, Pure water outlet valve; 003b, High pressure switch; 70, Booster pump; 80, Control board. Detailed implementation manners

[0062] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0063] A water purifier usually has a reverse osmosis filter element to purify raw water. Through a semi-permeable membrane, pollutants such as dissolved solids, salts, heavy metals, and microorganisms in water are separated under high pressure. Its precision can reach 0.0001 microns, which is one of the most effective water purification technologies currently.

[0064] However, in related technologies, the functions of water purifiers are relatively single, resulting in a short service life of the reverse osmosis filter element. The raw water is usually hard water containing a large amount of calcium and magnesium ions. After the calcium and magnesium filter element is filtered by the reverse osmosis filter element, it accumulates on the concentrated water side of the reverse osmosis filter element, making it easy for calcium and magnesium ions to form scale on the membrane surface of the reverse osmosis filter element, leading to membrane blockage and too high pre-membrane pressure, reducing the water permeability of the reverse osmosis filter element and shortening the service life of the reverse osmosis filter element.

[0065] To solve the above problems, please refer to Figures 1 to 3 , the embodiment of the present application provides a water purifier 001. The water purifier 001 includes a soft water system 002, a water purification system 003, and a hot water system 004. The soft water system 002 is connected to the raw water inlet 001a of the water purifier 001. The soft water system 002 is mainly used to soften the raw water to reduce the content of calcium and magnesium ions in the raw water, thereby obtaining soft water. The soft water system 002 can soften the raw water by distillation, or the soft water system 002 can also soften the raw water by ion exchange, or the soft water system 002 can also soften the raw water by other methods, which will not be specifically limited here.

[0066] Please refer to Figure 4 , the water purification system 003 includes a reverse osmosis filter element 53, a waste water return pipeline 55, and a booster pump 70. The water inlet of the reverse osmosis filter element 53 is connected to the first soft water outlet channel 0212A of the soft water system 002. The reverse osmosis module is mainly used to filter the soft water to obtain pure water. The reverse osmosis filter element 53 can filter out microorganisms, dissolved salts, colloidal substances, heavy metal ions, etc. in the soft water, so as to achieve pure water of drinkable level. The membrane of the reverse osmosis filter element 53 can be one or more of cellulose acetate membranes, polyamide membranes, etc.

[0067] Please refer to Figure 4 , the water inlet of the waste water return pipeline 55 is connected to the waste water outlet of the reverse osmosis filter element 53, and the water outlet of the waste water return pipeline 55 is connected to the water inlet of the reverse osmosis filter element 53. The waste water return pipeline 55 can only include a waste water return pipe 551, that is, after the reverse osmosis filter element 53 generates concentrated water, it directly flows to the water inlet of the reverse osmosis filter element 53 through the waste water return pipe 551. The waste water return pipeline 55 can also include a waste water return pipe 551 and a waste water return control member 552 to control the flow rate of the concentrated water of the reverse osmosis filter element 53, which will not be listed one by one here.

[0068] The booster pump 70 is arranged between the water inlet of the reverse osmosis filter element 53 and the first softened water outlet channel 0212A of the soft water system 002. The reverse osmosis technology utilizes the principle of a semi-permeable membrane. Under the action of a pressure higher than the osmotic pressure of the solution, water passes through the semi-permeable membrane while microorganisms, dissolved salts, colloidal substances, heavy metal ions, etc. cannot pass through, thereby achieving the purposes of separation, purification, and concentration. The main function of the booster pump 70 is to increase the pressure of water, provide sufficient driving force for the operation of the reverse osmosis filter element 53, enable water to overcome the resistance of the membrane of the reverse osmosis filter element 53, and smoothly pass through the membrane of the reverse osmosis filter element 53 to effectively separate impurities, salts, etc. in the water.

[0069] Please refer to Figure 3 , the water inlet of the hot water system 004 is communicated with the water outlet of the reverse osmosis filter element 53, and the hot water system 004 is used to provide hot water softened by the soft water system 002 and purified by the water purification system 003 to users.

[0070] In the embodiment of the present application, the water purifier 001 reduces the concentration of calcium and magnesium ions in the water entering the reverse osmosis filter element 53 by first softening the raw water through the soft water system 002 before the reverse osmosis filter element 53, thereby avoiding the formation of scale on the membrane surface of the reverse osmosis filter element 53 and further increasing the service life of the reverse osmosis filter element 53. At the same time, a waste water return pipeline 55 is provided to perform secondary filtration on the concentrated water of the reverse osmosis filter element 53, thereby increasing the waste water ratio of the reverse osmosis filter element 53, and recycling and reprocessing the concentrated water of the reverse osmosis filter element 53, reducing the amount of waste water finally discharged into the environment, and reducing the pollution and pressure on the environment.

[0071] Please refer to together Figures 1 to 3 , in some embodiments, the water purifier 001 includes a housing assembly 10. The housing assembly 10 has an inner cavity 10A. The soft water system 002 and the water purification system 003 are both arranged in the inner cavity 10A. As the external frame of the entire water purifier 001, its overall outer contour is arranged in a rectangular body. It is especially suitable for installation and placement in the kitchen area. The kitchen usually has a regular cabinet space, and the rectangular water purifier 001 can be easily embedded under the cabinet or placed in the corner of the kitchen countertop to integrate with the overall kitchen environment.

[0072] Please refer to Figure 4, in some embodiments, the wastewater return pipeline 55 includes a wastewater return pipe 551 and a wastewater return control member 552. The two ends of the wastewater return pipe 551 are respectively communicated with the water inlet and the wastewater outlet of the reverse osmosis filter element 53. The wastewater return control member 552 is arranged on the wastewater return pipe 551 to control the flow rate in the wastewater return pipe 551. With such an arrangement, the flow rate of the concentrated water in the wastewater drain pipe 541 is controlled by the wastewater return control member 552, so that the filtration efficiency of the reverse osmosis filter element 53 is in the best state, a certain amount of soft water can be treated per unit time, and it can be effectively separated into pure water and concentrated water. The system operates stably, and the ratio of the amount of pure water to the amount of concentrated water is relatively stable, which can meet the designed treatment capacity.

[0073] When the flow rate in the wastewater return pipeline 55 is too slow, the residence time of the concentrated water on the membrane surface of the reverse osmosis filter element 53 is too long, which will hinder the contact and separation process between the subsequent incoming water and the membrane of the reverse osmosis filter element 53, reducing the filtration efficiency of the reverse osmosis filter element 53, manifested as a decrease in the water output and a reduction in the amount of soft water treated per unit time. When the flow rate in the wastewater return pipeline 55 is too fast, although the concentrated water can be quickly carried away, it may change the pressure difference on both sides of the membrane, affecting the driving force for water molecules to pass through the membrane of the reverse osmosis filter element 53, also reducing the filtration efficiency, causing the water production to not increase but decrease instead, and at the same time may increase energy consumption.

[0074] Preferably, please refer to Figure 5 , the wastewater return control member 552 includes a wastewater control valve 553. The wastewater control valve 553 can adjust the flow rate in the wastewater return pipe 551. With such an arrangement, the user can adjust the wastewater control valve 553 according to needs, thereby adjusting the flow rate in the wastewater return pipe 551. For example, after replacing the reverse osmosis filter element 53, the wastewater control valve 553 can be adjusted to reduce the flow rate of the water in the wastewater return pipe 551, thereby increasing the pressure of the reverse osmosis filter element 53 and further improving the filtration effect of the reverse osmosis filter element 53. Another example is that after the reverse osmosis filter element 53 has been used for a long time, the wastewater control valve 553 can be adjusted to increase the flow rate of the water in the wastewater return pipe 551, thereby reducing the pressure on the reverse osmosis filter element 53 and further avoiding damage to the reverse osmosis filter element 53 caused by excessive pressure.

[0075] In some embodiments, please refer to Figure 6 , the wastewater return control member 552 includes a wastewater control plug 554. The wastewater control plug 554 is used to fix the flow rate of the water in the wastewater return pipe 551. With such an arrangement, the influence on the reverse osmosis filter element 53 caused by the change of the flow rate in the wastewater return pipe 551 can be avoided.

[0076] Further, the water inlet end of the booster pump 70 is communicated with the water outlet end of the wastewater reflux control member 552. With such a setting, the booster pump 70 can not only drive the flow of water in the wastewater reflux pipe 551, but also pressurize the reverse osmosis filter element 53 to improve the filtration efficiency, thereby optimizing the structure of the water purifier 001.

[0077] Please refer to Figure 4 , in some embodiments, the hot water system 004 includes a hot water tank assembly 20 and a hot water tank water replenishing valve 251 communicated with the hot water tank assembly 20. The hot water tank water replenishing valve 251 is communicated with the water outlet of the reverse osmosis filter element 53. The hot water tank assembly 20 is used to provide hot water softened by the soft water system 002 and purified by the water purification system 003 to users. The hot water tank assembly 20 is mainly used to store and heat pure water to provide hot water for users.

[0078] The hot water tank water replenishing valve 251 is used to control the water inlet of the hot water tank assembly 20, so as to prevent the pure water filtered by the reverse osmosis filter element 53 from directly entering the hot water tank assembly 20 when the user is receiving water and affecting the hot water temperature in the hot water tank assembly 20. Furthermore, the hot water tank assembly 20 can provide hot water with a stable temperature for users.

[0079] There are many heating methods for the hot water tank assembly 20. The hot water tank assembly 20 can heat the pure water by means of resistance heating, the hot water tank assembly 20 can also heat the pure water by means of induction heating, and the hot water tank assembly 20 can also heat the pure water by means of infrared heating. No specific limitation is made here.

[0080] When the water in the hot water tank assembly 20 is insufficient, it can be that the user manually opens the hot water tank water replenishing valve 251 to supplement pure water for the heat pipe assembly, or a water level detection assembly 23 and a control board 80 are arranged in the hot water tank assembly 20. When the water level detection assembly 23 detects that the pure water in the hot water tank assembly 20 is insufficient, the control board 80 will open the hot water tank water replenishing valve 251 to replenish water for the hot water tank assembly 20. They are not listed one by one here.

[0081] Please refer to Figures 7 to 10 together, and the hot water tank assembly 20 will be described in detail below.

[0082] The hot water tank assembly 20 includes a tank body 21, a heating member 22, and a detection assembly 23. At least part of the heating member 22 is located inside the tank body 21. The detection assembly 23 includes a water level detection element 232. At least part of the water level detection element 232 extends into the tank body 21. The water level detection element 232 is used to detect the water level in the tank body 21. The water purifier 001 further includes a control board 80. The control board 80 is electrically connected to the hot water tank water replenishing valve 251 and the water level detection element 232 to control the operation of the hot water tank water replenishing valve 251 according to the detection result of the water level detection element 232.

[0083] With such a setting, the control board 80 can detect the water level of pure water in the tank body 21 through the water level detection element 232, and correspondingly control the operation of the hot tank water replenishing valve 251, thereby playing a role in protecting the hot tank assembly 20.

[0084] For example, the water level detection element 232 is used to detect the lowest water level of pure water in the tank body 21. When the water level of pure water in the tank body 21 is lower than the preset value, the water level detection element 232 will send a signal to the control board 80, and the control board 80 will control the hot tank water replenishing valve 251 to open to replenish water to the tank body 21, thereby avoiding damage to the hot tank assembly 20 caused by dry burning of the heating element 22. Another example is that the water level detection element 232 is used to detect the highest water level of pure water in the tank body 21. When the water level of pure water in the tank body 21 is higher than the preset value, the water level detection element 232 will send a signal to the control board 80, and the control board 80 will control the hot tank water replenishing valve 251 to close, thereby avoiding the overflow of pure water in the tank body 21 from affecting the normal operation of the water purifier 001. These are not listed one by one here.

[0085] Please refer to Figures 7 to 10 , the tank body 21 has a heating cavity 21a, and the heating cavity 21a can be used to hold liquid; the heating element 22 is connected to the tank body 21 to heat the liquid in the heating cavity 21a. It can be understood that the heating element 22 can be installed on the outer wall surface or near the tank body 21 to transfer heat to the liquid in the heating cavity 21a through heat conduction, so that the liquid in the heating cavity 21a can be heated; or, the heating element 22 is installed in the heating cavity 21a and connected to the tank body 21. In this way, the heating element 22 can directly heat the liquid in the heating cavity 21a. The embodiments of the present application do not make specific limitations on this.

[0086] Among them, when the heating element 22 is located in the heating cavity 21a, the terminal 221 of the heating element 22 can penetrate the tank body 21 so that the terminal 221 extends out of the outer wall surface of the tank body 21, facilitating the electrical connection between the control board 80 and the terminal 221, thereby facilitating the control board 80 to control the operation of the heating element 22 according to the set program, so as to realize heating the liquid in the heating cavity 21a.

[0087] Specifically, the water level detection element 232 is connected to the tank body 21 and communicates with the heating chamber 21a, so that the water level detection element 232 can detect the water level in the heating chamber 21a. In the embodiments of the present application, the type of the water level detection element 232 is not specifically limited. Exemplarily, the water level detection element 232 can be one of a float type water level sensor, an electrode type water level sensor, and a capacitance type water level sensor. Among them, the float type water level sensor detects the change of the water level by the up and down floating of the float. When the water level rises, the float also rises; when the water level drops, the float drops. The floating of the float will trigger the switch inside the float type water level sensor, thereby outputting a corresponding electrical signal to the control board 80 to facilitate the detection of the water level in the heating chamber 21a. The electrode type water level sensor detects the water level by setting electrodes in the heating chamber 21a and using the conductivity of water. When the water level rises and contacts the electrode, the circuit will be turned on, thereby outputting an electrical signal to the control board 80 to facilitate the detection of the water level in the heating chamber 21a. The capacitance type water level sensor detects the water level by measuring the capacitance value formed between the capacitance type water level sensor and the water level. When the water level rises, the capacitance value will change, thereby outputting a corresponding electrical signal to the control board 80 to facilitate the detection of the water level in the heating chamber 21a.

[0088] Please continue to refer to Figure 9 , Further, in some embodiments, the water level detection element 232 includes a high water level probe 233 and a low water level probe 234. It can be understood that the high water level probe 233 is used to detect the position of the highest water level in the heating chamber 21a, and the low water level probe 234 is used to detect the position of the lowest water level in the heating chamber 21a; that is, when the liquid in the heating chamber 21a rises to the highest water level, the water inlet pipe 25 stops supplying water to the heating chamber 21a to prevent the liquid in the heating chamber 21a from overflowing; when the liquid in the heating chamber 21a drops to the lowest water level, the water inlet pipe 25 supplies water to the heating chamber 21a to prevent the heating chamber 21a from dry burning.

[0089] It should be noted that in the embodiments of the present application, the positions of the high water level probe 233 and the low water level probe 234 provided on the tank body 21 are not specifically limited.

[0090] Please continue to refer to Figure 10, in another embodiment, the water level detection element 232 may include two high water level probes 233 and one low water level probe 234. Among them, the two high water level probes 233 may be arranged on the tank top cover 212, and the positions of the high water levels detected by the two high water level probes 233 are inconsistent; that is, there are a first high water level position and a second high water level position in the heating chamber 21a, and in the height direction of the tank body 21, the position of the first high water level is higher than that of the second high water level. At this time, one high water level probe 233 is used to detect the position of the first high water level, and the other high water level probe 233 is used to detect the position of the second high water level. When the other high water level probe 233 fails, the detection can still be carried out through one high water level probe 233 to improve the accuracy of the high water level probe 233 detection. Furthermore, the low water level probe 234 may be arranged on the tank top cover 212 or on the tank bottom cover 213 to detect the position of the lowest water level in the heating chamber 21a.

[0091] Please continue to refer to Figure 9 , in some embodiments, the detection assembly 23 further includes a temperature control element 237. The temperature control element 237 is at least partially located inside the tank body 21. The temperature control element 237 is used to detect the water temperature inside the tank body 21. The control board 80 is electrically connected to the temperature control element 237 and the heating element 22 to control the operation of the heating element 22 according to the detection result of the temperature control element 237. With such a setting, the user can adjust the water temperature of the hot water according to the needs, thereby improving the user experience.

[0092] When the temperature control element 237 detects that the water temperature is higher than the preset value, the temperature control assembly will send a signal to the control board 80, and the control board 80 will control the heating element 22 to stop working, so as to prevent the water temperature from exceeding the preset value. When the temperature control element 237 detects that the water temperature is lower than the preset value, the temperature control assembly will send a signal to the control board 80, and the control board 80 will control the heating element 22 to work, so that the water temperature is maintained at the preset value.

[0093] The temperature control element 237 is connected to the tank body 21 and communicates with the heating chamber 21a; that is, a part of the temperature control element 237 extends into the heating chamber 21a to facilitate the temperature control element 237 to detect the temperature of the liquid in the heating chamber 21a. Among them, the temperature control element 237 may be arranged on the tank top cover 212 or on the tank body 211. The embodiments of the present application do not make specific limitations on this.

[0094] Please continue to refer to Figure 10, Further, in some embodiments, the temperature control element 237 includes a temperature control fixing plate 2371 and a temperature sensor 2372. Specifically, the temperature control fixing plate 2371 is connected to the tank body 21; that is, when the temperature control element 237 is installed on the tank body 211, the temperature control fixing plate 2371 can be fixed on the tank body 211, or the tank top cover 212, or the tank bottom cover 213 by welding, screwing, clamping, bonding, etc. A second through hole 2373 communicating with the heating chamber 21a is provided on the temperature control fixing plate 2371. In this way, it is convenient for the temperature sensor 2372 to extend into the heating chamber 21a through the second through hole 2373, so that the temperature sensor 2372 can detect the temperature of the liquid in the heating chamber 21a. When the temperature of the liquid is too high, the control board 80 can control the heating element 22 to stop heating to protect the tank body 21.

[0095] Please refer to Figure 4 , In some embodiments, the water purification system 003 further includes a pre-filter element 52. The water inlet of the pre-filter element 52 is communicated with the first soft water outlet channel 0212A of the soft water system 002, and the water outlet of the pre-filter element 52 is communicated with the water inlet of the reverse osmosis filter element 53. It can be understood that the pre-filter element 52 is arranged between the soft water system 002 and the reverse osmosis filter element 53; or the water inlet of the pre-filter element 52 is communicated with the raw water inlet 001a, and the water outlet of the pre-filter element 52 is communicated with the water inlet of the reverse osmosis filter element 53. It can be understood that the pre-filter element 52 is arranged between the soft water system 002 and the raw water inlet 001a. With such an arrangement, the pre-filter element 52 filters large particle impurities in the raw water or soft water, thereby reducing the filtration pressure of the reverse osmosis filter element 53 and further increasing the service life of the reverse osmosis filter element 53.

[0096] The pre-filter element 52 can be one or more of a stainless steel filter element, a PP cotton filter, a ceramic filter, a compression filter, an activated carbon filter, etc., and no specific limitation is made here. The pre-filter element 52 can remove visible impurities such as sediment, rust, and insect eggs in the water.

[0097] Please refer to Figure 4, in some embodiments, the soft water system 002 includes a resin tank 010 and a soft water valve 020. The raw water inlet passage 0211A of the soft water valve 020 is communicated with the raw water inlet 001a. The first soft water outlet passage 0212A of the soft water valve 020 is communicated with the water inlet of the reverse osmosis filter element 53. The raw water inlet passage 0211A of the soft water valve 020 is communicated with the first soft water outlet passage 0212A of the soft water valve 020 through the resin tank 010. With such a setting, the resin tank 010 adopts the physical and chemical ion exchange principle, without the need to add a large amount of chemical agents, thereby reducing the environmental pollution caused by chemical agents and the potential harm to human health. And the maintenance of the resin tank 010 is relatively simple, without the need for complex technologies and professional equipment. Regularly checking the state of the resin, replenishing the brine (for the case of softening water quality using ion exchange resin), and performing necessary cleaning and other work are sufficient. The service life of the resin is relatively long. Generally, through correct use and maintenance, the resin can be used for several years or even longer, reducing the maintenance cost of the soft water system 002.

[0098] Furthermore, the soft water system 002 further includes a salt tank assembly 030. The salt tank assembly 030 is communicated with the salt tank connection pipe 0224 of the soft water valve 020. The salt tank connection pipe 0224 is communicated with the sewage discharge connection pipe 0225 of the soft water valve 020 through a resin pipe. With such a setting, the salt tank assembly 030 can provide salt for the resin tank 010. The raw water obtains salt through the salt tank connection pipe 0224 of the soft water valve 020 to form brine, and then completes the ion exchange with the resin tank 010 to complete the regeneration process, and finally is discharged through the sewage discharge connection pipe 0225 of the soft water valve 020, without the need for the user to manually add salt, thus facilitating the user to use the water purifier 001.

[0099] The water purifier 001 can perform the regeneration step on the resin tank 010 regularly, or can perform the regeneration step on the resin tank 010 when the TDS value of the soft water flowing out of the first soft water outlet passage 0212A of the soft water system 002 is detected to be abnormal by the soft water quality detection component 040, without specific limitation.

[0100] Preferably, the soft water system 002 further includes a soft water quality detection component 040, which is arranged between the first soft water outlet passage 0212A of the soft water valve 020 and the water inlet of the reverse osmosis filter element 53. With such a setting, when the soft water quality detection component 040 detects that the TDS value of the soft water flowing out of the first soft water outlet passage 0212A of the soft water valve 020 is abnormal, the water purifier 001 starts the regeneration step of the resin tank 010. This can save water resources and salt, and timely performing the regeneration step on the resin tank 010 can avoid the shortening of the service life of the reverse osmosis filter element 53 due to too high calcium and magnesium ion content in the soft water flowing into the reverse osmosis filter element 53.

[0101] It should be noted that when the TDS value of the soft water detected by the soft water quality detector 040 is abnormal, the user can be prompted by a buzzer to start the regeneration step of the resin tank 010, or the control board 80 can automatically start the regeneration step of the resin tank 010. No specific limitation is made here.

[0102] Please refer to Figures 11 to 12 , the soft water valve 020 is used for the water purifier 001. The soft water valve 020 includes a valve housing, and the valve housing has a raw water inlet channel 0211A and a first soft water outlet channel 0212A. The raw water inlet channel 0211A is used to receive raw water, and the first soft water outlet channel 0212A is used to receive the soft water generated after the raw water is processed by the resin tank 010 of the water purifier 001. Among them, the valve housing also has a raw water outlet channel 0213A and a second soft water outlet channel 0214A. The raw water outlet channel 0213A is communicated with the raw water inlet channel 0211A to direct a part of the raw water entering the raw water inlet channel 0211A to directly flow out of the raw water inlet channel 0211A. The second soft water outlet channel 0214A is communicated with the first soft water outlet channel 0212A to direct a part of the soft water entering the first soft water outlet channel 0212A to directly flow out of the first soft water outlet channel 0212A.

[0103] Please refer to Figure 11 , in the embodiment of the present application, the soft water valve 020 can shunt and output raw water and soft water to meet different water use needs of users and improve the user experience. Among them, the raw water is processed by the water purifier 001 and supplied to the user as domestic water, so as to meet the domestic water use needs of the user such as washing vegetables and watering flowers, and there is no need to configure external pipelines in the water purifier 001, reducing material and installation costs. The soft water valve 020 of the present application is provided with two soft water output channels and can supply different soft water using components. For example, the first soft water outlet channel 0212A supplies the water purification system 003 to reduce scale blockage, and the second soft water outlet channel 0214A supplies drinking water to the user.

[0104] It should be noted that the soft water valve 020 includes a valve housing and a plurality of control components arranged in the valve housing. A plurality of water delivery channels are formed in the valve housing, and the plurality of water delivery channels are respectively used to communicate with the external raw water pipeline, the sewage pipeline, the resin tank 010 and the salt tank assembly 030 of the soft water system 002, etc. The control components are used to control the on-off of the plurality of water delivery channels to switch the flow path in the soft water valve 020, so as to realize various functions such as soft water production, salt dissolution, salt absorption and backwashing.

[0105] Please refer to Figure 11In some embodiments, the soft water valve 020 includes a main valve body 021, the main valve body 021 includes a raw water inlet pipe 0211 and a raw water outlet pipe 0213, the raw water inlet pipe 0211 has a raw water inlet channel 0211A, the raw water outlet pipe 0213 has a raw water outlet channel 0213A, and the raw water outlet pipe 0213 is arranged on the raw water inlet pipe 0211 so that the raw water outlet channel 0213A is connected with the raw water inlet channel 0211A. The raw water entering the soft water valve 020 from the external raw water pipeline passes through the raw water inlet channel 0211A and the raw water outlet channel 0213A in sequence and then directly outputs the soft water valve 020, so as to shorten the path of the raw water supplied by the soft water valve 020 as much as possible, avoid turbulence and pressure drop caused by multi-stage diversion, and ensure rapid supply of raw water.

[0106] In order to meet various water use scenarios, the main valve body 021 in the embodiment of the present application includes a first soft water outlet pipe 0212 and a second soft water outlet pipe 0214. The first soft water outlet pipe 0212 has a first soft water outlet channel 0212A, and the second soft water outlet pipe 0214 has a second soft water outlet channel 0214A. The main valve body 021 is provided with two soft water outlet pipes, and there is no need to install additional three-way interfaces or other diversion devices, covering the needs of multiple scenarios. Among them, the second soft water outlet pipe 0214 is arranged on the first soft water outlet pipe 0212, so that the first soft water outlet channel 0212A is connected to the second soft water outlet channel 0214A, and the two soft water delivery channels are internally connected to ensure balanced water flow pressure.

[0107] See also Figure 12 In some embodiments, the main valve body 021 includes a first valve housing 0215, a raw water inlet pipe 0211, and a first soft water outlet pipe 0212. The raw water inlet pipe 0211 has a raw water inlet passage 0211A, and the first soft water outlet pipe 0212 has a first soft water outlet passage 0212A. The first valve housing 0215 has a main chamber 0215A. The raw water inlet pipe 0211 and the first soft water outlet pipe 0212 are disposed outside the first valve housing 0215 and are respectively connected to the first valve housing 0215, so as to facilitate installation with other components. The soft water valve 020 also includes a valve core assembly 023, which is arranged in the main chamber 0215A. The raw water inlet channel 0211A is connected to the main chamber 0215A. The valve core assembly 023 is used to adjust the connection between the main chamber 0215A and the resin tank 010 or the salt box assembly 030 of the water purifier 001, so as to control the water supply from the raw water inlet channel 0211A to the resin tank 010 or the salt box assembly 030 to meet the water supply for softening water or resin regeneration.

[0108] See also Figure 12, in some embodiments, the raw water inlet pipe 0211 and the first softened water outlet pipe 0212 are arranged side by side. The raw water inlet channel 0211A and the main chamber 0215A are connected through a first liquid passage 0215B provided in the first valve housing 0215. The first liquid passage 0215B extends from the raw water inlet pipe 0211 towards the main chamber 0215A. Among them, the first liquid passage 0215B is designed in a straight line. During the process of raw water flowing through the raw water inlet channel 0211A and the first liquid passage 0215B, it does not need to pass through multiple bent channels and can quickly flow to the main chamber 0215A, improving the water flow efficiency.

[0109] Please refer to Figure 13 , in some embodiments, the soft water valve 020 further includes a secondary valve body 022, and the secondary valve body 022 is used to connect to the resin tank 010 and the salt tank assembly 030. The secondary valve body 022 includes a second valve housing 0221, a first tank connection pipe 0222 and a second tank connection pipe 0223 provided in the second valve housing 0221. The second valve housing 0221 is connected to the first valve housing 0215. The first tank connection pipe 0222 has a first tank channel 0222A, and the second tank connection pipe 0223 has a second tank channel 0223A. The first tank channel 0222A and the second tank channel 0223A are respectively used to communicate with the resin chamber of the resin tank 010 to convey raw water or brine to the resin tank 010.

[0110] Specifically, the first tank channel 0222A communicates with the top of the resin chamber, and the second tank channel 0223A communicates with the bottom of the resin chamber. When the soft water valve 020 works, the liquid enters the resin tank 010 from the first tank channel 0222A or the second tank channel 0223A. For example, during the process of the soft water system 002 producing soft water, the raw water enters the top of the resin tank 010 through the first tank channel 0222A, flows through the resin chamber, and then enters the soft water valve 020 from the second tank channel 0223A that communicates with the bottom of the resin chamber; during the process of the soft water system 002 regenerating the resin, the raw water or brine enters the bottom of the resin tank 010 from the second tank channel 0223A and enters the soft water valve 020 from the first tank channel 0222A that communicates with the top of the resin chamber.

[0111] Please refer to Figure 12 , in some embodiments, the valve core assembly 023 includes a valve core 0231 and a driving part 0232. The driving part 0232 is installed in the first valve housing 0215, and the driving part 0232 is connected to the valve core 0231 to drive the valve core 0231 to switch among multiple valve core positions, thereby adjusting the on-off of the soft water valve 020 with the resin tank 010 or the salt tank assembly 030 of the water purifier 001.

[0112] Please refer to Figure 13, in some embodiments, the auxiliary valve body 022 further includes a salt tank connection pipe 0224 connected to the second valve housing 0221. The salt tank connection pipe 0224 is provided with a salt passage 0224A for communicating with the salt tank assembly 030. A fourth liquid passage 0221A is provided in the second valve housing 0221, and the fourth liquid passage 0221A communicates with the main chamber 0215A and the salt passage 0224A respectively. The valve core assembly 023 has a second valve core position. In the second valve core position, the raw water inlet passage 0211A, the main chamber 0215A, the fourth liquid passage 0221A, and the salt passage 0224A are communicated in sequence to guide the raw water to enter the salt tank assembly 030 from the salt tank connection pipe 0224. That is, the second valve core position of the valve core assembly 023 defines the water injection path of the water softening valve 020. When the water softening valve 020 actually works, the valve core assembly 023 switches to the second valve core position to realize the salt tank water injection action for resin regeneration, so as to facilitate the formation of brine for subsequent regeneration processes.

[0113] Please refer to Figure 13 , in some embodiments, along the extension direction of the raw water inlet pipe 0211, the raw water inlet pipe 0211 and the first softened water outlet pipe 0212 are arranged on one side of the first valve housing 0215, and the two are arranged side by side to reduce the risk of interference of the pipelines installed on the water softening valve 020 caused by the staggered arrangement of the pipes. The auxiliary valve body 022 is arranged on the other side of the first valve housing 0215 to disperse the pipes on both sides of the water softening valve 020 along the extension direction of the raw water inlet pipe 0211, so as to facilitate the connection of the resin tank 010 and the salt tank assembly 030.

[0114] Please refer to Figure 11 , in some embodiments, the extension directions of the raw water inlet pipe 0211 and the first softened water outlet pipe 0212 are the same, and the extension direction of the part of the valve housing having the raw water outlet passage 0213A is perpendicular to the extension direction of the raw water inlet pipe 0211. That is, the raw water outlet pipe 0213 is perpendicular to the raw water inlet pipe 0211, and the water paths inside the two are orthogonal, reducing the pipeline intersection and the installation complexity. The extension direction of the part of the valve housing having the second softened water passage 0214A is perpendicular to the extension direction of the first softened water outlet pipe 0212. That is, the second softened water outlet pipe 0214 is perpendicular to the first softened water outlet pipe 0212, and the water paths inside the two are orthogonal, reducing the pipeline intersection and the installation complexity.

[0115] Please refer to Figure 13, in some embodiments, the second valve housing 0221 is further provided with a fifth liquid passage 0221B for communicating between the fourth liquid passage 0221A and the second tank passage 0223A. The fifth liquid passage 0221B communicates with the salt passage 0224A. Wherein, the auxiliary valve body 022 further includes a jet assembly 024. The jet assembly 024 is arranged in the fifth liquid passage 0221B of the second valve housing 0221. The jet assembly 024 is used to control the water flow direction in the salt passage 0224A. The spool assembly 023 of the embodiment of the present application further has a third spool position. In the third spool position, the jet assembly 024 is activated to form a negative pressure, so that the brine in the salt tank assembly 030 flows back into the salt passage 0224A. And in the third spool position, the raw water inlet passage 0211A, the main chamber 0215A, the fourth liquid passage 0221A, the fifth liquid passage 0221B, and the second tank passage 0223A are connected in sequence, so that the brine formed in the salt tank assembly 030 and the raw water entering the water softening valve 020 converge and then enter the bottom of the resin tank 010 from the second tank connection pipe 0223 to regenerate the resin in the resin tank 010.

[0116] The second valve housing 0221 is further provided with a sixth liquid passage 0221C for communicating between the main chamber 0215A and the second tank passage 0223A. The spool assembly 023 of the embodiment of the present application further has a fourth spool position. In the fourth spool position, the raw water inlet passage 0211A, the main chamber 0215A, the sixth liquid passage 0221C, and the second tank passage 0223A are connected in sequence, so that the raw water entering the water softening valve 020 enters the bottom of the resin tank 010 from the second tank connection pipe 0223 to backwash the resin tank 010.

[0117] Please refer to Figure 11 , in some embodiments, the second valve housing 0221 is provided with a drain connection pipe 0225. The drain connection pipe 0225 communicates with the first tank passage 0222A. When the resin in the water softening system 002 is regenerated, the drain connection pipe 0225 is used to discharge the regenerated sewage from the first tank passage 0222A.

[0118] The water softening system 002 includes a resin tank 010, a salt tank assembly 030, and a water softening valve 020. The salt tank assembly 030 is arranged side by side with the resin tank 010 along the first direction. The water softening valve 020 is installed on the resin tank 010, and the water softening valve 020 is respectively connected to the resin tank 010 and the salt tank assembly 030. In the water softening system 002, the water softening valve 020 can control the raw water to enter the resin tank 010 to produce softened water. The water softening valve 020 can control the raw water to enter the salt tank assembly 030 to form brine, and control the brine to be mixed with the raw water and enter the resin tank 010 to realize resin regeneration.

[0119] The soft water system 002 and the water purification system 003 are arranged side by side in the second direction, and the second direction is perpendicular to the first direction. Among them, in the soft water system 002, the soft water valve 020 guides the soft water formed by the resin tank 010 to the water purification system 003. In this way, the water purification system 003 filters the soft water, and the filter element in the water purification system 003 is not easily blocked by scale, thereby extending the service life of the filter element.

[0120] Further, please refer to Figure 4 , the water purification system 003 further includes a high-pressure switch 003b. The water inlet end of the high-pressure switch 003b is connected to the water outlet of the reverse osmosis filter element 53, and the water outlet end of the high-pressure switch 003b is communicated with the water inlet end of the hot water tank filling valve 251. The control board 80 is electrically connected to the high-pressure switch 003b and the booster pump 70. With such a setting, the high-pressure switch 003b monitors the water pressure in the system. When the pressure reaches the set upper limit value, the high-pressure switch 003b sends a signal to the control board 80, and the control board 80 controls the booster pump 70 to stop working. This is to prevent damage to the reverse osmosis filter element 53 caused by excessive system pressure, and at the same time avoid shortening the service life of the booster pump 70 due to long-term operation under high pressure.

[0121] Please refer to Figure 4 , in some embodiments, the water outlet of the reverse osmosis filter element 53 is communicated with the pure water outlet of the water purifier 001. With such a setting, the water purifier 001 can supply pure water to users through the pure water outlet, thereby improving the user experience.

[0122] Further, the water purification system 003 further includes a pure water outlet valve 003a, and the pure water outlet valve 003a is arranged between the pure water outlet and the water outlet of the reverse osmosis filter element 53. With such a setting, users can control the water output or stop the water output at the pure water outlet by controlling the opening and closing of the pure water outlet valve 003a.

[0123] Specifically, the water purifier 001 further includes a faucet 1A, and the faucet 1A is communicated with the pure water outlet and the water outlet of the hot water system 004. The faucet 1A is used to control the water output at the pure water outlet and the water outlet of the hot water system 004. With such a setting, users can switch the water output at the pure water outlet and the hot water outlet according to their needs through the faucet 1A, which is convenient for users to operate, and can adjust the water output at the pure water outlet and the water output at the hot water outlet through the faucet 1A to obtain water with an appropriate water temperature.

[0124] Please refer to Figure 4, in some embodiments, the water purification system 003 further includes a wastewater drainage pipeline 54. The wastewater drainage pipeline 54 is communicated with the wastewater outlet of the reverse osmosis filter element 53, and the wastewater drainage pipeline 54 is used to discharge the concentrated water of the reverse osmosis filter element 53. With such a setting, the concentrated water in the reverse osmosis filter element 53 can be discharged through the wastewater drainage pipe 541, which can maintain the osmotic pressure balance of the reverse osmosis filter element 53, thereby ensuring the filtering effect of the reverse osmosis filter element 53. Moreover, the concentrated water contains high-concentration impurities and salts that may crystallize and precipitate on the membrane surface of the reverse osmosis filter element 53, causing the membrane pores to be blocked and the water permeability of the membrane to decrease. Therefore, discharging the concentrated water can play a role in protecting the reverse osmosis filter element 53, and further improve the service life of the reverse osmosis filter element 53.

[0125] The wastewater drainage pipeline 54 may only include the wastewater drainage pipe 541, that is, the concentrated water generated by the reverse osmosis filter element 53 is directly discharged through the wastewater drainage pipe 541. The wastewater drainage pipeline 54 may also include the wastewater drainage pipe 541 and the wastewater drainage valve 542, and the flow rate of the concentrated water of the reverse osmosis filter element 53 is controlled by the wastewater drainage valve 542, which will not be listed one by one here.

[0126] Preferably, please refer to Figure 4 , the wastewater drainage pipeline 54 includes a wastewater drainage pipe 541 and a wastewater drainage valve 542. The wastewater drainage pipe 541 is communicated with the wastewater outlet of the reverse osmosis filter element 53, and the wastewater drainage valve 542 is installed on the wastewater drainage pipe 541. With such a setting, the flow rate of the concentrated water in the wastewater drainage pipe 541 is controlled by the wastewater drainage valve 542, so that the filtering efficiency of the reverse osmosis filter element 53 is in the best state, and a certain amount of soft water can be treated per unit time and effectively separated into pure water and concentrated water. The system operates stably, and the ratio of the amount of pure water to the amount of concentrated water is relatively stable, which can meet the designed treatment capacity.

[0127] When the drainage speed is too slow and the residence time of the concentrated water on the membrane surface of the reverse osmosis filter element 53 is too long, it will hinder the contact and separation process between the subsequent influent and the membrane of the reverse osmosis filter element 53, reduce the filtering efficiency of the reverse osmosis filter element 53, manifested as a decrease in the water output and a reduction in the amount of soft water treated per unit time. When the drainage speed is too fast, although the concentrated water can be quickly carried away, it may change the pressure difference on both sides of the membrane, affect the driving force for water molecules to pass through the membrane of the reverse osmosis filter element 53, also reduce the filtering efficiency, cause the water production to not increase but decrease, and may increase the energy consumption at the same time.

[0128] Please refer to Figure 4, in some embodiments, the water purifier 001 further includes a pipeline machine 57, and the pipeline machine 57 is communicated with the water outlet of the reverse osmosis filter element 53. With such a setting, users can obtain pure water filtered by the soft water system 002 and the reverse osmosis filter element 53 through the pipeline machine 57. Generally, the pipeline machine 57 has multiple water volume selection gears. Users can easily select the required water volume according to their own needs through button or touch operations, without the need to use other containers for measurement, which is convenient and fast, avoiding the problems of taking too much or too little water, and thus improving the user experience.

[0129] Considering that during the shutdown period of the water purifier 001, the concentrated water may reverse osmosis back to the inlet side through the membrane of the reverse osmosis filter element 53, resulting in an increase in the content of salts and other impurities in the first cup of water when starting again. In view of this, please refer to Figure 5 , the water purification system 003 further includes a pure water return pipeline 56. One end of the pure water return pipeline 56 is communicated with the water outlet of the reverse osmosis filter element 53, and the other end of the pure water return pipeline 56 is communicated with the water inlet of the reverse osmosis filter element 53. With such a setting, when the water purifier 001 is turned on, the water flowing out of the water outlet of the reverse osmosis filter element 53 first enters the water inlet of the reverse osmosis filter element 53 through the pure water return pipeline 56, so that the reverse osmosis filter element 53 filters the water again, ensuring that the TDS value of the first cup of water is normal, so that users do not need to drain a certain amount of water to ensure water safety, and thus avoid wasting water resources.

[0130] It should be noted that the pure water return pipeline 56 may include a pure water return pipe 561 and a one-way valve. The one-way valve can prevent the soft water of the soft water system 002 from directly bypassing the reverse osmosis filter element 53 through the pure water return pipe 561. The pure water return pipeline 56 may also include a pure water return pipe 561 and a pure water return control member 562 to control the flow of the pure water return pipeline 56 through the pure water return control member 562. The pure water return pipeline 56 may further include a pure water return pipe 561, a pure water return control member 562 and a water pump, and the water pump is used to drive the water to flow from the water outlet of the reverse osmosis filter element 53 to the water inlet of the reverse osmosis filter element 53. No specific limitation is made here.

[0131] Preferably, please refer to Figure 5, the pure water return pipeline 56 includes a pure water return pipe 561 and a pure water return control member 562. One end of the pure water return pipe 561 is communicated with the water outlet of the reverse osmosis filter element 53, and the other end of the pure water return pipe 561 is communicated with the water inlet of the reverse osmosis filter element 53. The pure water return control member 562 is arranged on the pure water return pipe 561, and the pure water return control member 562 is used to control whether the pure water return pipe 561 is in circulation. With this setting, the pure water return control member 562 can close the pure water return pipe 561, thereby preventing the water flowing out of the water outlet of the reverse osmosis filter element 53 from entering the pure water return pipe 561 and causing the water outlet efficiency of the water purifier 001 to decrease. When the user first turns on the water purifier 001, the pure water return control member 562 opens the pure water return pipeline 56, so that the water flowing out of the water outlet of the reverse osmosis filter element 53 first passes through the pure water return pipe 561 and returns to the water inlet of the reverse osmosis filter element 53.

[0132] It should be noted that there are many working modes of the pure water return pipeline 56. For example, when the water purifier 001 stops, the pure water return control member 562 can remain open, so that the water in the reverse osmosis filter element 53 is circulated and filtered through the pure water return pipe 561. When the user turns on the water purifier 001, the pure water return control member 562 closes, and the water purifier 001 can provide drinkable pure water in time, thereby improving the user experience. Another example is that when the water purifier 001 starts, the pure water return control member 562 starts, and the hot water tank filling valve 251 or the pure water outlet valve 003a remains closed. After the pure water completes the return step, the pure water return control member 562 closes, and the hot water tank filling valve 251 or the pure water outlet valve 003a opens. These are not listed one by one here.

[0133] Specifically, please refer to Figure 6 , the pure water return control member 562 is a one-way pure water return valve 563. With this setting, the soft water of the soft water system 002 can be prevented from directly bypassing the reverse osmosis filter element 53 through the pure water return pipe 561.

[0134] Preferably, please refer to Figure 4 , the water outlet of the pure water return pipeline 56 is communicated with the water inlet end of the booster pump 70. With this setting, the booster pump 70 can drive the water in the pure water return pipeline 56, thereby accelerating the return efficiency of the pure water return pipeline 56 and further shortening the waiting time of the user. At the same time, the booster pump 70 can not only drive the flow of the water in the pure water return pipeline 56, but also pressurize the reverse osmosis filter element 53 to improve the filtration efficiency, thereby optimizing the structure of the water purifier 001.

[0135] Furthermore, please refer to Figure 5, the water inlet end of the booster pump 70 is communicated with the water outlet of the pure water return pipeline 56 and the water outlet of the wastewater return pipeline 55. With such a setting, the booster pump 70 can drive the water in the pure water return pipeline 56, thereby accelerating the return efficiency of the pure water return pipeline 56 and further shortening the waiting time of the user. At the same time, the booster pump 70 can not only drive the flow of water in the pure water return pipeline 56, but also pressurize the reverse osmosis filter element 53 to improve the filtration efficiency, and can also drive the flow of water in the wastewater return pipeline 55, thereby optimizing the structure of the water purifier 001.

[0136] Please refer to Figure 4 , in some embodiments, the hot water system 004 includes a hot water tank assembly 20 and a water extraction pump 30. The water inlet of the hot water tank assembly 20 is communicated with the water outlet of the reverse osmosis filter element 53, and the water inlet end of the water extraction pump 30 is communicated with the water outlet of the hot water tank assembly 20. With such a setting, the pure water can be stored by the hot water tank assembly 20, and when the user needs hot water, the hot water tank assembly 20 can quickly provide hot water without the user waiting for a long time for the hot water system 004 to heat the water. At the same time, the water extraction pump 30 can improve the water outlet efficiency of the hot water tank assembly 20.

[0137] In some embodiments, please refer to Figure 4 , the hot water system 004 includes a hot water tank assembly 20 and a hot water tank water replenishing valve 251 communicated with the hot water tank assembly 20. The hot water tank water replenishing valve 251 is communicated with the water outlet of the reverse osmosis filter element 53, and the hot water tank assembly 20 is used to provide hot water softened by the soft water system 002 and purified by the water purification system 003 to the user. The hot water tank assembly 20 is mainly used to store and heat pure water to provide hot water for the user.

[0138] The hot water tank water replenishing valve 251 is used to control the water inlet of the hot water tank assembly 20, so as to prevent the pure water filtered by the reverse osmosis filter element 53 from directly entering the hot water tank assembly 20 when the user is receiving water and affecting the hot water temperature in the hot water tank assembly 20. Furthermore, the hot water tank assembly 20 can provide hot water with a stable temperature for the user.

[0139] There are many heating methods for the hot water tank assembly 20. The hot water tank assembly 20 can heat the pure water by means of resistance heating, and the hot water tank assembly 20 can also heat the pure water by means of induction heating, and the hot water tank assembly 20 can also heat the pure water by means of infrared heating. No specific limitation is made here.

[0140] When the water in the hot water tank assembly 20 is insufficient, it can be that the user manually opens the hot water tank water replenishing valve 251 to replenish pure water for the hot water pipe assembly, or a water level detection assembly 23 and a control board 80 are provided in the hot water tank assembly 20. When the water level detection assembly 23 detects that the pure water in the hot water tank assembly 20 is insufficient, the control board 80 will open the hot water tank water replenishing valve 251 to replenish water for the hot water tank assembly 20. They are not listed one by one here.

[0141] In the description of the present application, it should be understood that if terms such as "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and should not be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0142] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0143] In the description of the present application, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0144] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0145] The above content is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A water purifier, characterized in that: include: A soft water system connected to the raw water inlet of the water purifier; A water purification system, comprising a reverse osmosis filter element, a wastewater return pipeline and a booster pump, wherein the water inlet of the reverse osmosis filter element is communicated with the first soft water outlet channel of the soft water system, the water inlet of the wastewater return pipeline is communicated with the wastewater outlet of the reverse osmosis filter element, the water outlet of the wastewater return pipeline is communicated with the water inlet of the reverse osmosis filter element, and the booster pump is arranged between the first soft water outlet channel of the soft water system and the water inlet of the reverse osmosis filter element; and A hot water system, wherein the water inlet of the hot water system is connected to the water outlet of the reverse osmosis filter element, and the hot water system is used to provide users with hot water softened by the soft water system and purified by the water purification system.

2. The water purifier according to claim 1, characterized in that: The wastewater return pipeline comprises: a wastewater return pipe, wherein both ends of the wastewater return pipe are respectively connected to the water inlet of the reverse osmosis filter element and the wastewater outlet of the reverse osmosis filter element; and The wastewater reflux control component is arranged in the wastewater reflux pipe to control the flow rate in the wastewater reflux pipe.

3. The water purifier according to claim 2, characterized in that: The wastewater reflux control element includes a wastewater control valve, and the wastewater control valve can adjust the flow rate in the wastewater reflux pipe; or The wastewater backflow control component includes a wastewater control plug.

4. The water purifier according to claim 2, characterized in that: The water inlet end of the booster pump is communicated with the water outlet end of the wastewater reflux control component.

5. The drinking water purifier according to any one of claims 1 to 4, characterized in that: The water purification system also includes: A pure water reflux pipeline is connected to the water outlet of the reverse osmosis filter element at one end and to the water inlet of the reverse osmosis filter element at the other end.

6. The water purifier according to claim 5, characterized in that: The pure water return pipeline comprises: a pure water reflux pipe, one end of which is connected to the water outlet of the reverse osmosis filter element, and the other end of which is connected to the water inlet of the reverse osmosis filter element; and The pure water reflux control component is arranged on the pure water reflux pipe and is used to control whether the pure water reflux pipe is flowing.

7. The water purifier according to claim 6, characterized in that: The pure water reflux control component comprises a pure water reflux one-way valve.

8. The water purifier according to claim 6, characterized in that: The water outlet of the pure water reflux pipeline is communicated with the water inlet end of the booster pump.

9. The water purifier according to claim 1, characterized in that: The water purification system also includes: A pre-filter element, wherein the water inlet of the pre-filter element is communicated with the first soft water outlet channel of the soft water system, and the water outlet of the pre-filter element is communicated with the water inlet end of the booster pump.

10. The water purifier according to claim 1, characterized in that: The soft water system comprises: Resin tanks; and A soft water valve, wherein the raw water inlet channel of the soft water valve is connected to the raw water inlet, the first soft water outlet channel of the soft water valve is connected to the water inlet of the reverse osmosis filter element, and the raw water inlet channel of the soft water valve is connected to the first soft water outlet channel of the soft water valve through the resin tank.

11. The drinking water purifier according to claim 10, characterized in that: The soft water system also includes: The salt box assembly is communicated with the salt box connecting pipe of the soft water valve, and the salt box connecting pipe of the soft water valve is communicated with the sewage connecting pipe of the soft water valve through the resin pipe.

12. The drinking water purifier according to claim 11, characterized in that: The soft water system also includes: A soft water quality detection component is communicated with the first soft water outlet channel of the soft water valve.

13. The water purifier according to claim 1, characterized in that: The hot water system comprises: a hot tank assembly, wherein a water inlet of the hot tank assembly is connected to a water outlet of the reverse osmosis filter element; and A water pump, wherein the water inlet end of the water pump is connected to the water outlet of the hot tank assembly.

14. The drinking water purifier according to claim 13, characterized in that: The hot tank assembly comprises: Tank; a heating element, at least partially located within the tank; and A temperature control element, at least partially located in the tank body, the temperature control element is used to detect the water temperature in the tank body; The water purifier also includes a control board, which is electrically connected to the temperature control element and the heating element to control the operation of the heating element according to the detection result of the temperature control element.

15. The drinking water purifier according to any one of claims 1 to 13, characterized in that: The water purification system also includes: The wastewater drainage pipeline is connected to the wastewater outlet of the reverse osmosis filter element and is used to discharge the concentrated water of the reverse osmosis filter element.

16. The drinking water purifier according to claim 15, characterized in that: The wastewater drainage pipeline comprises: a wastewater drainage pipe connected to the wastewater outlet of the reverse osmosis filter element; and A wastewater drainage valve is installed on the wastewater drainage pipe.

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