Clean water dispenser

Abstract

The purification water dispenser comprises a water softening system and a water purification 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 water outlet of the water softening system. A water outlet of the reverse osmosis filter element is communicated with a pure water outlet of the purified water dispenser, a water inlet of the wastewater backflow pipeline is communicated with a wastewater opening of the reverse osmosis filter element, a water outlet of the wastewater backflow branch is communicated with a water inlet of the reverse osmosis filter element, and the booster pump is arranged between a water outlet of the water softening system and the water inlet 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] The present application relates to the technical field of water treatment, and particularly relates to a purified drinking water machine. BACKGROUND

[0002] The purified drinking water machine is generally provided with a reverse osmosis filter core to purify raw water, and through a semi-permeable membrane, dissolved solids, salts, heavy metals and microorganisms and other pollutants in water are separated under high pressure, and the precision can reach 0.0001 microns, which is one of the most effective water purification technologies at present.

[0003] However, in the related art, the purified drinking water machine has a single function, so that the service life of the reverse osmosis filter core is short. CONTENT OF THE UTILITY MODEL

[0004] Embodiments of the present application provide a purified drinking water machine, aiming to improve the problem of short service life of the reverse osmosis filter core.

[0005] In order to solve the above technical problem, the embodiments of the present application provide a purified drinking water machine, comprising:

[0006] a soft water system, which is in communication with a raw water inlet of the purified drinking water machine; and

[0007] a purified water system, comprising a reverse osmosis filter core, a waste water backflow pipeline and a booster pump, a water inlet of the reverse osmosis filter core is in communication with a water outlet of the soft water system, a water outlet of the reverse osmosis filter core is in communication with a purified water outlet of the purified drinking water machine, a water inlet of the waste water backflow pipeline is in communication with a waste water outlet of the reverse osmosis filter core, a water outlet of the waste water backflow pipeline is in communication with the water inlet of the reverse osmosis filter core, and the booster pump is arranged between the water outlet of the soft water system and the water inlet of the reverse osmosis filter core.

[0008] In some embodiments, the purified water system further comprises:

[0009] a purified water outlet valve arranged between the purified water outlet and the water outlet of the reverse osmosis filter core.

[0010] In some embodiments, the purified water system further comprises:

[0011] a waste water drainage pipeline in communication with the waste water outlet of the reverse osmosis filter core, used for discharging concentrated water of the reverse osmosis filter core.

[0012] In some embodiments, the waste water drainage pipeline comprises:

[0013] a waste water drainage pipe in communication with the waste water outlet of the reverse osmosis filter core; and

[0014] a waste water drainage valve installed on the waste water drainage pipe.

[0015] In some embodiments, the wastewater return pipeline comprises:

[0016] a wastewater return pipe, two ends of the wastewater return pipe being in communication with the water inlet of the reverse osmosis filter core and the wastewater outlet of the reverse osmosis filter core respectively; and

[0017] a wastewater return control member installed on the wastewater return pipe for controlling the flow in the wastewater return pipe.

[0018] In some embodiments, the wastewater return control member is a wastewater control valve, which can adjust the flow in the wastewater return pipe; or

[0019] the wastewater return control member is a wastewater control plug.

[0020] In some embodiments, the water outlet end of the wastewater return control member is in communication with the water inlet end of the booster pump.

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

[0022] a pure water return pipeline, one end of which is in communication with the water outlet of the reverse osmosis filter core, and the other end of which is in communication with the water inlet of the reverse osmosis filter core.

[0023] In some embodiments, the pure water return pipeline comprises:

[0024] a pure water return pipe, one end of which is in communication with the water outlet of the reverse osmosis filter core, and the other end of which is in communication with the water inlet of the reverse osmosis filter core; and

[0025] a pure water return control member provided on the pure water return pipe for controlling whether the pure water return pipe is in communication.

[0026] In some embodiments, the pure water return control member is a pure water return check valve.

[0027] In some embodiments, the water outlet of the pure water return pipeline is in communication with the water inlet end of the booster pump.

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

[0029] a resin tank; and

[0030] a soft water valve, the water inlet of the soft water valve being in communication with the raw water inlet, the water outlet of the soft water valve being in communication with the water inlet of the reverse osmosis filter core, and the water inlet of the soft water valve being in communication with the water outlet of the soft water valve through the resin tank.

[0031] In some embodiments, the soft water system further comprises:

[0032] A salt tank assembly is in communication with a salt tank connection of the water softener valve, which is in communication with a drain connection of the water softener valve through the resin tube.

[0033] In some embodiments, the water softening system further comprises:

[0034] A water quality detection member is in communication with a water outlet of the water softener valve.

[0035] The water purifier in the embodiments of the present application sets a water softening system before the reverse osmosis filter element, and reduces the concentration of calcium and magnesium ions in the water entering the reverse osmosis filter element by softening the raw water through the water softening system, so as to avoid the formation of scale on the membrane surface of the reverse osmosis filter element, thereby improving the service life of the reverse osmosis filter element. Meanwhile, a waste water return pipeline is arranged to perform secondary filtration on the concentrated water of the reverse osmosis filter element, thereby improving the waste water ratio of the reverse osmosis filter element, and the concentrated water of the reverse osmosis filter element is returned for reprocessing, which reduces the amount of waste water finally discharged into the environment and reduces the pollution and pressure on the environment. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0037] Figure 1 FIG. 1 is a structural schematic diagram of an embodiment of the water purifier of the present application;

[0038] Figure 2 FIG. 2 is a structural schematic diagram of another view of an embodiment of the water purifier of the present application;

[0039] Figure 3 FIG. 3 is a structural schematic diagram of another view of an embodiment of the water purifier of the present application;

[0040] Figure 4 FIG. 4 is a water circuit diagram of an embodiment of the water purifier of the present application;

[0041] Figure 5 FIG. 5 is a water circuit diagram of another embodiment of the water purifier of the present application;

[0042] Figure 6 FIG. 6 is a water circuit diagram of another embodiment of the water purifier of the present application;

[0043] Figure 7 FIG. 7 is a structural schematic diagram of an embodiment of the hot tank assembly of the present application;

[0044] Figure 8Fig. 6 is a perspective view of a heat tank assembly according to an embodiment of the present application;

[0045] Figure 9 Fig. 7 is a sectional view taken along line A-A of Fig. 6; Figure 8

[0046] Figure 10 Fig. 8 is an exploded view of a heat tank assembly according to an embodiment of the present application;

[0047] Figure 11 Fig. 9 is a perspective view of a water softening valve according to an embodiment of the present application;

[0048] Figure 12 Fig. 10 is a sectional view of a water softening valve according to an embodiment of the present application;

[0049] Figure 13 Fig. 11 is an exploded view of a water softening valve according to an embodiment of the present application.

[0050] BRIEF DESCRIPTION OF DRAWINGS

[0051] ​001. water purifier; 001a. raw water inlet; 1A. faucet; 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 shell; 0215A. main cavity; 0215B. first liquid passage; 022. auxiliary valve body; 0221. second valve shell; 0221A. fourth liquid passage; 0221B. fifth liquid passage; 0221C. sixth liquid passage; 0222. first tank body connecting pipe; 0222A. first tank body channel; 0223. second tank body connecting pipe; 0223A. second tank body channel; 0224. salt tank connecting pipe; 0224A. salt passage; 0225. sewage connecting pipe; 023. valve core assembly; 0231. valve core; 0232. driving part; 024. jet assembly; 030. salt tank assembly; 040. soft water quality detection member; 004. hot water system; 20. hot tank assembly; 21. tank body; 211. tank body; 212. tank top cover; 213. tank bottom cover; 21a. heating cavity; 22. heating member; 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. water purification system; 50. filtration system; 52. pre-filter element; 53. reverse osmosis filter element; 54. waste water drainage pipeline; 541. waste water drainage pipe; 542. waste water drainage valve; 55. waste water backflow pipeline; 551. waste water backflow pipe; 552. waste water backflow control member; 553. waste water control valve; 554. waste water control plug; 56. pure water backflow pipeline; 561. pure water backflow pipe; 562. pure water backflow control member; 563. pure water backflow check valve; 57. pipeline machine; 003a. pure water outlet valve; 003b. high pressure switch; 70. booster pump; 80. control board. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0053] The net drinking water machine is usually provided with a reverse osmosis filter core to purify raw water, and through a semi-permeable membrane under high pressure, the dissolved solids, salts, heavy metals and microorganisms and other pollutants in the water are separated, and the precision can reach 0.0001 microns, which is one of the most effective water purification technologies at present.

[0054] However, in the related art, the net drinking water machine has a single function, so that the service life of the reverse osmosis filter core is short. The raw water is usually hard water containing a large amount of calcium and magnesium ions, and the calcium and magnesium filter core will accumulate on the concentrated water side of the reverse osmosis filter core after being filtered by the reverse osmosis filter core, so that calcium and magnesium ions are easy to form scale on the membrane surface of the reverse osmosis filter core, causing membrane clogging and excessive pre-membrane pressure, reducing the water permeability of the reverse osmosis filter core, and shortening the service life of the reverse osmosis filter core.

[0055] To solve the above problems, please refer to Figures 1 to 3 The embodiment of the present application provides a net drinking water machine 001, which comprises a soft water system 002 and a water purification system 003, the soft water system 002 is communicated with the raw water inlet 001a of the net drinking water machine 001, and the soft water system 002 is mainly used for softening the raw water to reduce the content of calcium and magnesium ions in the raw water, so as to obtain soft water. The soft water system 002 can soften the raw water by distillation, and the soft water system 002 can also soften the raw water by ion exchange, and the soft water system 002 can also soften the raw water by other ways, which are not limited here.

[0056] Please refer to Figure 4 The water purification system 003 comprises a reverse osmosis filter core 53, a waste water backflow pipeline 55 and a booster pump 70, the water inlet of the reverse osmosis filter core 53 is communicated with the first soft water outlet channel 0212A of the soft water system 002, and the water outlet of the reverse osmosis filter core 53 is communicated with the pure water outlet of the net drinking water machine 001. The reverse osmosis module is mainly used for filtering the soft water to obtain pure water, and the reverse osmosis filter core 53 can filter out microorganisms, dissolved salts, colloidal substances, heavy metal ions and the like in the soft water, so as to obtain pure water of drinkable level, and the membrane of the reverse osmosis filter core 53 can be one or more of cellulose acetate membrane, polyamide membrane and the like.

[0057] Please refer to Figure 4 The water inlet of the waste water backflow pipeline 55 is communicated with the waste water outlet of the reverse osmosis filter core 53, and the water outlet of the waste water backflow pipeline 55 is communicated with the water inlet of the reverse osmosis filter core 53. The waste water backflow pipeline 55 can only comprise a waste water backflow pipe 551, that is, the concentrated water generated by the reverse osmosis filter core 53 directly flows to the water inlet of the reverse osmosis filter core 53 through the waste water backflow pipe 551, and the waste water backflow pipeline 55 can comprise the waste water backflow pipe 551 and a waste water backflow control member 552, and the flow rate of the concentrated water of the reverse osmosis filter core 53 is controlled through the waste water backflow control member 552, which will not be enumerated here.

[0058] The booster pump 70 is arranged between the water inlet of the reverse osmosis filter core 53 and the first soft water outlet channel 0212A of the soft water system 002. The reverse osmosis technology is based on the principle of 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 and the like cannot pass through, so as to achieve the purpose of separation, purification and concentration. The main function of the booster pump 70 is to increase the pressure of the water, to provide sufficient driving force for the operation of the reverse osmosis filter core 53, so that the water can overcome the resistance of the membrane of the reverse osmosis filter core 53 and smoothly pass through the membrane of the reverse osmosis filter core 53, realizing the effective separation of impurities and salts in the water.

[0059] The purified water dispenser 001 in the embodiments of the present application is provided with the soft water system 002 in front of the reverse osmosis filter core 53. The soft water system 002 is used to soften the raw water to reduce the concentration of calcium and magnesium ions in the water entering the reverse osmosis filter core 53, so as to avoid the formation of scale on the surface of the membrane of the reverse osmosis filter core 53, thereby prolonging the service life of the reverse osmosis filter core 53. The waste water return pipeline 55 is arranged to filter the concentrated water of the reverse osmosis filter core 53 again, thereby increasing the waste water ratio of the reverse osmosis filter core 53, and the concentrated water of the reverse osmosis filter core 53 is returned for further treatment, reducing the amount of waste water discharged into the environment and reducing the pollution and pressure on the environment.

[0060] Please refer to Figures 1 to 3 In some embodiments, the purified water dispenser 001 comprises a housing assembly 10 having an inner cavity 10A, and the soft water system 002 and the water purification system 003 are arranged in the inner cavity 10A as the external frame of the entire purified water dispenser 001, and the overall external contour is in the shape of 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 body of the purified water dispenser 001 can be easily embedded under the cabinet or placed in the corner of the kitchen countertop, and integrated with the overall environment of the kitchen.

[0061] Please refer to Figure 4 In some embodiments, the purified water dispenser 001 further comprises a hot water system 004, which comprises a hot tank assembly 20 and a hot tank water replenishing valve 251 communicating with the hot tank assembly 20. The hot tank water replenishing valve 251 communicates with the water outlet of the reverse osmosis filter core 53. The hot tank assembly 20 is used to provide users with hot water softened by the soft water system 002 and purified by the water purification system 003. The hot tank assembly 20 is mainly used to store and heat pure water to provide hot water for users. In this way, when users need hot water, the hot tank assembly 20 can provide hot water for users in time, thereby shortening the waiting time for users to heat the water and improving the user experience.

[0062] The hot tank water replenishing valve 251 is used to control the water inflow of the hot tank assembly 20, so as to avoid the direct inflow of the pure water filtered by the reverse osmosis filter element 53 into the hot tank assembly 20 when the user draws water, which affects the temperature of the hot water in the hot tank assembly 20, and then the hot tank assembly 20 can provide the user with hot water with stable temperature.

[0063] The hot tank assembly 20 can heat the pure water by the resistance heating mode, the inductive heating mode or the infrared heating mode, which is not limited here.

[0064] When the water in the hot tank assembly 20 is insufficient, the user can manually open the hot tank water replenishing valve 251 to replenish the pure water for the hot pipe assembly, or the water level detection assembly 23 and the control panel 80 can be arranged in the hot tank assembly 20, and when the water level detection assembly 23 detects that the pure water in the hot tank assembly 20 is insufficient, the control panel 80 will open the hot tank water replenishing valve 251 to replenish the water for the hot tank assembly 20, which is not listed here.

[0065] Please refer to Figures 7 to 10 , and the hot tank assembly 20 will be described in detail below.

[0066] The hot tank assembly 20 comprises a tank body 21, a heating element 22 and a detection assembly 23, the heating element 22 is at least partially located in the tank body 21, the detection assembly 23 comprises a water level detection element 232, the water level detection element 232 is at least partially inserted into the tank body 21, the water level detection element 232 is used to detect the water level in the tank body 21, the pure water dispenser 001 further comprises a control panel 80, the control panel 80 is electrically connected with the hot tank water replenishing valve 251 and the water level detection element 232, so as to control the working of the hot tank water replenishing valve 251 according to the detection result of the water level detection element 232.

[0067] In this way, the control panel 80 can detect the water level of the pure water in the tank body 21 through the water level detection element 232, and correspondingly control the working of the hot tank water replenishing valve 251, so as to protect the hot tank assembly 20.

[0068] For example, the water level detecting element 232 is used to detect the lowest water level of the pure water in the tank body 21. When the water level of the pure water in the tank body 21 is lower than the preset value, the water level detecting element 232 sends a signal to the control board 80, and the control board 80 controls the hot tank water supplement valve 251 to open to supplement water to the tank body 21, so as to avoid the damage of the hot tank assembly 20 caused by the dry burning of the heating element 22. For another example, the water level detecting element 232 is used to detect the highest water level of the pure water in the tank body 21. When the water level of the pure water in the tank body 21 is higher than the preset value, the water level detecting element 232 sends a signal to the control board 80, and the control board 80 controls the hot tank water supplement valve 251 to close, so as to avoid the pure water in the tank body 21 overflowing to affect the normal work of the purified water dispenser 001. Here, the above examples are not listed one by one.

[0069] Please refer to Figures 7 to 10 The tank body 21 has a heating cavity 21a which can be used to carry liquid; the heating element 22 is connected with the tank body 21, and is used to heat the liquid in the heating cavity 21a. It can be understood that the heating element 22 can be installed on or near the outer wall surface of the tank body 21, so as to transfer heat to the liquid in the heating cavity 21a by 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 with the tank body 21, so that the heating element 22 can directly heat the liquid in the heating cavity 21a, and the embodiments of the present application are not limited in this regard.

[0070] 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, so as to facilitate the electrical connection between the control board 80 and the terminal 221, thereby facilitating the control board 80 to control the working of the heating element 22 according to the set program, so as to realize the heating of the liquid in the heating cavity 21a.

[0071] Specifically, the water level detecting element 232 is connected with the tank body 21, and the water level detecting element 232 is in communication with the heating cavity 21a, so that the water level detecting element 232 can detect the water level condition in the heating cavity 21a. The type of the water level detecting element 232 is not limited in the embodiments of the present application. For example, the water level detecting element 232 can be one of a float ball type water level sensor, an electrode type water level sensor and a capacitive type water level sensor. The float ball type water level sensor detects the change of the water level by the up and down floating of the float ball. When the water level rises, the float ball also rises. When the water level falls, the float ball falls. The floating of the float ball triggers the switch inside the float ball type water level sensor, so as to output the corresponding electric signal to the control board 80, so as to detect the water level condition in the heating cavity 21a. The electrode type water level sensor detects the water level by the electric conductivity of the water by setting the electrode in the heating cavity 21a. When the water level rises to contact the electrode, the circuit is turned on, so as to output the electric signal to the control board 80, so as to detect the water level condition in the heating cavity 21a. The capacitive type water level sensor detects the water level by measuring the capacitance value formed between the capacitive type water level sensor and the water level. When the water level rises, the capacitance value changes, so as to output the corresponding electric signal to the control board 80, so as to detect the water level condition in the heating cavity 21a.

[0072] Please continue to refer to Figure 9 Further, in some embodiments, the water level detecting element 232 comprises 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 cavity 21a, and the low water level probe 234 is used to detect the position of the lowest water level in the heating cavity 21a. That is, when the liquid in the heating cavity 21a rises to the highest water level, the water inlet pipe 25 stops supplying water to the heating cavity 21a, so as to prevent the liquid in the heating cavity 21a from overflowing. When the liquid in the heating cavity 21a falls to the lowest water level, the water inlet pipe 25 supplies water to the heating cavity 21a, so as to prevent the dry burning of the heating cavity 21a.

[0073] It should be noted that the embodiments of the present application do not limit the positions of the high water level probe 233 and the low water level probe 234 on the tank body 21.

[0074] Please continue to refer to Figure 10In another embodiment, the water level detecting element 232 can include two high water level probes 233 and one low water level probe 234, wherein the two high water level probes 233 can be arranged on the tank top cover 212, and the two high water level probes 233 detect different high water level positions; that is, the heating cavity 21a has a first high water level position and a second high water level position, and in the height direction of the tank body 21, the first high water level position is higher than the second high water level position, at this time, one high water level probe 233 is used to detect the first high water level position, and the other high water level probe 233 is used to detect the second high water level position, when the other high water level probe 233 fails, the detection can still be performed through one high water level probe 233, so as to improve the accuracy of the detection of the high water level probe 233. In addition, the low water level probe 234 can be arranged on the tank top cover 212 or the tank bottom cover 213 to detect the lowest water level position in the heating cavity 21a.

[0075] 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 in the tank body 21, the temperature control element 237 is used to detect the water temperature in the tank body 21, and the control panel 80 is electrically connected with the temperature control element 237 and the heating element 22, so as to control the heating element 22 to work according to the detection result of the temperature control element 237. In this way, the user can adjust the water temperature of the hot water according to the demand, so as to improve the user experience.

[0076] When the temperature control element 237 detects that the water temperature is higher than the preset value, the temperature control assembly sends a signal to the control panel 80, and the control panel 80 controls the heating element 22 to stop working, so as to avoid that the water temperature exceeds the preset value. When the temperature control element 237 detects that the water temperature is lower than the preset value, the temperature control assembly sends a signal to the control panel 80, and the control panel 80 controls the heating element 22 to work, so as to maintain the water temperature at the preset value.

[0077] The temperature control element 237 is connected with the tank body 21 and communicates with the heating cavity 21a; that is, part of the temperature control element 237 extends into the heating cavity 21a, so that the temperature control element 237 detects the temperature of the liquid in the heating cavity 21a. Wherein, the temperature control element 237 can be arranged on the tank top cover 212 or the upper part of the tank body 211, and the present application does not make specific limitation on this.

[0078] Please continue to refer to Figure 10Further, in some embodiments, the temperature control element 237 comprises a temperature control fixing plate 2371 and a temperature sensor 2372. Specifically, the temperature control fixing plate 2371 is connected with 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 or the like. The temperature control fixing plate 2371 is provided with a second through hole 2373 in communication with the heating cavity 21a, so that the temperature sensor 2372 can extend into the heating cavity 21a through the second through hole 2373, so that the temperature sensor 2372 detects the temperature of the liquid in the heating cavity 21a, and when the temperature of the liquid is too high, the control panel 80 can control the heating element 22 to stop heating, so as to protect the tank 21.

[0079] Referring to Figure 4 In some embodiments, the water purification system 003 further comprises a pre-filter 52, the water inlet of the pre-filter 52 is in communication with the first soft water outlet channel 0212A of the water softening system 002, and the water outlet of the pre-filter 52 is in communication with the water inlet of the reverse osmosis filter 53. It can be understood that the pre-filter 52 is arranged between the water softening system 002 and the reverse osmosis filter 53; or the water inlet of the pre-filter 52 is in communication with the raw water inlet 001a, and the water outlet of the pre-filter 52 is in communication with the water inlet of the reverse osmosis filter 53. It can be understood that the pre-filter 52 is arranged between the water softening system 002 and the raw water inlet 001a. In this way, the pre-filter 52 filters large particles in raw water or soft water, thereby reducing the filtration pressure of the reverse osmosis filter 53, and thereby improving the service life of the reverse osmosis filter 53.

[0080] The pre-filter 52 can be one or more of a stainless steel filter, a PP cotton filter, a ceramic filter, a compressed filter and an activated carbon filter, which are not limited here. The pre-filter 52 can remove visible impurities such as silt, rust and insect eggs in water.

[0081] Referring to Figure 4In some embodiments, the soft water system 002 comprises a resin tank 010 and a soft water valve 020, the raw water inlet channel 0211A of the soft water valve 020 is communicated with the raw water inlet 001a, the first soft water outlet channel 0212A of the soft water valve 020 is communicated with the water inlet of the reverse osmosis filter element 53, and the raw water inlet channel 0211A of the soft water valve 020 is communicated with the first soft water outlet channel 0212A of the soft water valve 020 through the resin tank 010. In this way, the resin tank 010 uses the principle of physical and chemical ion exchange, without the need for a large amount of chemical additives, thereby reducing the pollution of the environment and the potential harm to human health caused by chemical additives. In addition, the maintenance of the resin tank 010 is relatively simple and does not require complex technology and professional equipment. Regularly checking the state of the resin, supplementing the salt solution (for the case of using ion exchange resin to soften water quality), and performing necessary cleaning and other work can reduce the maintenance cost of the soft water system 002.

[0082] Further, the soft water system 002 further comprises a salt tank assembly 030, which is communicated with the salt tank connecting pipe 0224 of the soft water valve 020, and the salt tank connecting pipe 0224 is communicated with the blowdown connecting pipe 0225 of the soft water valve 020 through the resin pipe. In this way, the salt tank assembly 030 can provide salt for the resin tank 010, the raw water obtains salt through the salt tank connecting pipe 0224 of the soft water valve 020 to form brine, and then completes the ion exchange and regeneration process with the resin tank 010, and finally is discharged through the blowdown connecting pipe 0225 of the soft water valve 020, without the need for the user to manually add salt, thereby facilitating the user to use the purified water dispenser 001.

[0083] The purified water dispenser 001 can periodically implement the regeneration step for the resin tank 010, or can implement the regeneration step for the resin tank 010 when the soft water TDS value flowing out of the first soft water outlet channel 0212A of the soft water system 002 is detected to be abnormal by the soft water quality detection element 040, without being specifically limited.

[0084] Preferably, the soft water system 002 further comprises a soft water quality detection element 040, which is arranged between the first soft water outlet channel 0212A of the soft water valve 020 and the water inlet of the reverse osmosis filter element 53. In this way, when the soft water TDS value flowing out of the first soft water outlet channel 0212A of the soft water valve 020 is detected to be abnormal by the soft water quality detection element 040, the purified water dispenser 001 starts the regeneration step for the resin tank 010, which can save water resources and salt, and timely perform the regeneration step for the resin tank 010, thereby avoiding the shortening of the service life of the reverse osmosis filter element 53 caused by the high content of calcium and magnesium ions in the soft water flowing into the reverse osmosis filter element 53.

[0085] It should be noted that when the soft water quality detection piece 040 detects that the TDS value of the soft water is abnormal, the user can be prompted to start the regeneration step of the resin tank 010 through the buzzer, or the control panel 80 can automatically start the regeneration step of the resin tank 010, which is not specifically limited here.

[0086] In some embodiments, referring to Figure 5 , the water outlet of the reverse osmosis filter core 53 is in communication with the pure water outlet of the purified drinking water machine 001. In this way, the purified drinking water machine 001 can provide pure water to the user through the pure water outlet, thereby improving the user's experience.

[0087] Further, referring to Figure 5 , the water purification system 003 further comprises a pure water outlet valve 003a, which is arranged between the pure water outlet and the water outlet of the reverse osmosis filter core 53. In this way, the user can control the water outlet or stop the water outlet of the pure water outlet by controlling the on-off of the pure water outlet valve 003a.

[0088] Specifically, referring to Figure 5 , the purified drinking water machine 001 further comprises a faucet 1A, which is in communication with the pure water outlet and the water outlet of the hot water system 004, and the faucet 1A is used to control the water outlet of the pure water outlet and the hot water system 004. In this way, the user can switch the water outlet of the pure water outlet and the hot water outlet according to the demand through the faucet 1A, thereby facilitating the user's operation, and the user can adjust the water outlet of the pure water outlet and the water outlet of the hot water outlet to obtain water of appropriate temperature through the faucet 1A.

[0089] Referring to Figure 5 , in some embodiments, the water purification system 003 further comprises a waste water drainage pipeline 54, which is in communication with the waste water outlet of the reverse osmosis filter core 53, and the waste water drainage pipeline 54 is used to drain the concentrated water of the reverse osmosis filter core 53. In this way, the concentrated water in the reverse osmosis filter core 53 is drained through the waste water drainage pipeline 541, which can maintain the osmotic pressure balance of the reverse osmosis filter core 53, thereby ensuring the filtering effect of the reverse osmosis filter core 53, and the concentrated water with high concentration of impurities and salt may be crystallized and precipitated on the membrane surface of the reverse osmosis filter core 53, causing membrane hole blockage and reducing the water permeability of the membrane, thereby the concentrated water can protect the reverse osmosis filter core 53, thereby improving the service life of the reverse osmosis filter core 53.

[0090] The waste water drainage pipeline 54 can only include the waste water drainage pipeline 541, that is, the concentrated water generated by the reverse osmosis filter core 53 is directly drained through the waste water drainage pipeline 541, and the waste water drainage pipeline 54 can also include the waste water drainage pipeline 541 and the waste water drainage valve 542, which controls the flow rate of the concentrated water of the reverse osmosis filter core 53, which is not listed here.

[0091] Preferably, referring to Figure 5 , the wastewater drainage pipeline 54 comprises a wastewater drainage pipe 541 and a wastewater drainage valve 542, the wastewater drainage pipe 541 is in communication with the wastewater port of the reverse osmosis filter core 53, and the wastewater drainage valve 542 is installed on the wastewater drainage pipe 541. In this way, 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 core 53 is in an optimal state, a certain amount of soft water can be treated in a unit of time, and the soft water is effectively separated into pure water and concentrated water, the system runs stably, the proportion of the amount of pure water and the amount of concentrated water is relatively stable, and the designed treatment capacity can be met.

[0092] When the drainage speed is too slow, the concentrated water stays on the membrane surface of the reverse osmosis filter core 53 for too long, which hinders the contact and separation process of the subsequent water with the membrane of the reverse osmosis filter core 53, reduces the filtering efficiency of the reverse osmosis filter core 53, and is manifested as a decrease in the water output and a decrease in the amount of soft water treated in a unit of time. When the drainage speed is too fast, although the concentrated water can be quickly taken away, the pressure difference on both sides of the membrane may change, the driving force of the water molecules passing through the membrane of the reverse osmosis filter core 53 is affected, and the filtering efficiency is also reduced, so that the water production does not increase but decreases, and the energy consumption may also increase.

[0093] Preferably, referring to Figure 5 , in some embodiments, the purified drinking water machine 001 further comprises a pipeline machine 57, which is in communication with the water outlet of the reverse osmosis filter core 53. In this way, the user can obtain the pure water filtered by the soft water system 002 and the reverse osmosis filter core 53 through the pipeline machine 57. The pipeline machine 57 generally has multiple water volume selections, and the user can easily select the required water volume through key or touch operation according to his own needs, without the need to use other containers for measurement, which is convenient and fast, avoids the problem of taking too much or too little water, and thus improves the user experience.

[0094] Considering that during the shutdown of the purified drinking water machine 001, the concentrated water may be reverse osmosis through the membrane of the reverse osmosis filter core 53 back to the water inlet side, resulting in an increase in the content of impurities such as salt in the first cup of water when restarting, and in view of this, referring to Figure 5 , the purified water system 003 further comprises a pure water backflow pipeline 56, one end of the pure water backflow pipeline 56 is in communication with the water outlet of the reverse osmosis filter core 53, and the other end of the pure water backflow pipeline 56 is in communication with the water inlet of the reverse osmosis filter core 53. In this way, when the purified drinking water machine 001 is started, the water flowing out of the water outlet of the reverse osmosis filter core 53 first enters the water inlet of the reverse osmosis filter core 53 through the pure water backflow pipeline 56, so that the reverse osmosis filter core 53 filters the water again, ensures that the TDS value of the first cup of water is normal, and thus the user does not need to discard a certain amount of water to ensure water safety, thereby avoiding waste of water resources.

[0095] It should be noted that the pure water return pipeline 56 can be composed of the pure water return pipeline 561 and a one-way valve, through which the soft water of the soft water system 002 can be prevented from bypassing the reverse osmosis filter core 53 directly through the pure water return pipeline 561. The pure water return pipeline 56 can also be composed of the pure water return pipeline 561 and a pure water return control member 562, through which the flow of the pure water return pipeline 56 is controlled. The pure water return pipeline 56 can also be composed of the pure water return pipeline 561, the pure water return control member 562 and a water pump, through which the water is driven to flow from the water outlet of the reverse osmosis filter core 53 to the water inlet of the reverse osmosis filter core 53. No specific limitation is made herein.

[0096] Preferably, referring to Figure 5 , the pure water return pipeline 56 is composed of the pure water return pipeline 561 and the pure water return control member 562. One end of the pure water return pipeline 561 is in communication with the water outlet of the reverse osmosis filter core 53, and the other end of the pure water return pipeline 561 is in communication with the water inlet of the reverse osmosis filter core 53. The pure water return control member 562 is arranged on the pure water return pipeline 561, and is used to control whether the pure water return pipeline 561 is in flow. In this way, the pure water return control member 562 can close the pure water return pipeline 561, so as to avoid the water flowing out of the water outlet of the reverse osmosis filter core 53 from entering the pure water return pipeline 561, thereby reducing the water outlet efficiency of the pure water drinking machine 001. When the user first opens the pure water drinking machine 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 core 53 first passes through the pure water return pipeline 561 and returns to the water inlet of the reverse osmosis filter core 53.

[0097] It should be noted that there are many working modes of the pure water return pipeline 56. For example, when the pure water drinking machine 001 is stopped, the pure water return control member 562 can be kept in an open state, so that the water in the reverse osmosis filter core 53 is kept in circulation filtering through the pure water return pipeline 561. When the user opens the pure water drinking machine 001, the pure water return control member 562 is closed, so that the pure water drinking machine 001 can provide drinkable pure water in time, thereby improving the user's experience. For another example, when the pure water drinking machine 001 is started, the pure water return control member 562 is started, and the hot tank water supplement valve 251 or the pure water outlet valve 003a is kept closed. After the pure water completes the return step, the pure water return control member 562 is closed, and the hot tank water supplement valve 251 or the pure water outlet valve 003a is opened. Here, the above-mentioned examples are not listed one by one.

[0098] Specifically, referring to Figure 6 , the pure water return control member 562 is a pure water return one-way valve 563. In this way, the soft water of the soft water system 002 can be prevented from bypassing the reverse osmosis filter core 53 directly through the pure water return pipeline 561.

[0099] Preferably, the outlet of the pure water return pipeline 56 is in communication with the water inlet of the booster pump 70. In this way, 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 thus 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 filtering efficiency, thereby optimizing the structure of the purified water dispenser 001.

[0100] Referring to Figure 5 In some embodiments, the hot water system 004 comprises a hot tank assembly 20 and a water pump 30, the water inlet of the hot tank assembly 20 is in communication with the water outlet of the reverse osmosis filter element 53, and the water inlet of the water pump 30 is in communication with the water outlet of the hot tank assembly 20. In this way, the pure water can be stored in the hot tank assembly 20, and the hot tank assembly 20 can quickly provide hot water when the user needs hot water, without the user having to wait for a long time for the hot water system 004 to heat the water. At the same time, the water pump 30 can improve the water outlet efficiency of the hot tank assembly 20.

[0101] Further referring to Figure 4 The purified water system 003 further comprises a high-pressure switch 003b, the water inlet of the high-pressure switch 003b is connected to the water outlet of the reverse osmosis filter element 53, the water outlet of the high-pressure switch 003b is in communication with the water inlet of the hot tank water replenishing valve 251, and the control panel 80 is electrically connected to the high-pressure switch 003b and the booster pump 70. In this way, 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 panel 80, and the control panel 80 controls the booster pump 70 to stop working. This is to prevent the system pressure from being too high to damage the reverse osmosis filter element 53, and also to avoid the booster pump 70 running for a long time under high pressure to shorten the service life.

[0102] Referring to Figure 4 In some embodiments, the purified water system 003 further comprises a pure water outlet valve 003a, which is arranged between the pure water outlet and the water outlet of the reverse osmosis filter element 53. In this way, the user can control the pure water outlet to discharge or stop discharging water by controlling the on-off of the pure water outlet valve 003a.

[0103] Specifically, the purified water dispenser 001 further comprises a faucet 1A, which is in communication with the pure water outlet and the water outlet of the hot water system 004, and is used to control the pure water outlet and the water outlet of the hot water system 004 to discharge water. In this way, the user can switch the pure water outlet and the hot water outlet to discharge water according to the needs through the faucet 1A, thereby facilitating the user's operation, and the user can adjust the water discharge amount of the pure water outlet and the hot water outlet through the faucet 1A to obtain water with a suitable water temperature.

[0104] Please refer to Figure 4 In some embodiments, the water purification system 003 further comprises a waste water drainage pipeline 54, which is in communication with the waste water outlet of the reverse osmosis filter core 53, and is used to drain the concentrated water from the reverse osmosis filter core 53. In this way, the concentrated water in the reverse osmosis filter core 53 is drained through the waste water drainage pipeline 541, so that the osmotic pressure balance of the reverse osmosis filter core 53 can be maintained, thereby ensuring the filtering effect of the reverse osmosis filter core 53. In addition, the concentrated water has high concentration of impurities and salts, which may crystallize and precipitate on the membrane surface of the reverse osmosis filter core 53, causing membrane hole blockage and reducing the water permeability of the membrane. Therefore, draining the concentrated water can protect the reverse osmosis filter core 53, thereby prolonging the service life of the reverse osmosis filter core 53.

[0105] The waste water drainage pipeline 54 can only include the waste water drainage pipeline 541, i.e., the concentrated water generated by the reverse osmosis filter core 53 is directly drained through the waste water drainage pipeline 541. Alternatively, the waste water drainage pipeline 54 can include the waste water drainage pipeline 541 and a waste water drainage valve 542, which is used to control the flow rate of the concentrated water from the reverse osmosis filter core 53. However, this will not be listed one by one here.

[0106] Preferably, please refer to Figure 4 The waste water drainage pipeline 54 includes the waste water drainage pipeline 541 and the waste water drainage valve 542, the waste water drainage pipeline 541 is in communication with the waste water outlet of the reverse osmosis filter core 53, and the waste water drainage valve 542 is installed on the waste water drainage pipeline 541. In this way, the flow rate of the concentrated water in the waste water drainage pipeline 541 is controlled by the waste water drainage valve 542, so that the filtering efficiency of the reverse osmosis filter core 53 is in an optimal state, a certain amount of soft water can be treated in a unit of time, and the soft water is effectively separated into pure water and concentrated water. In addition, the system runs stably, the ratio of the amount of pure water to the amount of concentrated water is relatively stable, and the designed treatment capacity can be met.

[0107] When the drainage speed is too slow, the concentrated water stays on the membrane surface of the reverse osmosis filter core 53 for too long, which hinders the contact and separation process between the subsequent water and the membrane of the reverse osmosis filter core 53, and reduces the filtering efficiency of the reverse osmosis filter core 53, which is manifested as a decrease in the amount of water, and a decrease in the amount of soft water treated in a unit of time. When the drainage speed is too fast, although the concentrated water can be quickly removed, the pressure difference between the two sides of the membrane may change, which affects the driving force of water molecules passing through the membrane of the reverse osmosis filter core 53, and also reduces the filtering efficiency, which causes the water production to decrease instead of increasing, and also increases the energy consumption.

[0108] Please refer to Figure 4In some embodiments, the purified drinking water machine 001 further comprises a pipeline machine 57 which is in communication with the water outlet of the reverse osmosis filter core 53. In this way, the user can obtain the purified water filtered by the soft water system 002 and the reverse osmosis filter core 53 through the pipeline machine 57, which generally has multiple water volume selections. The user can easily select the required water volume by pressing or touching the operation according to his own needs, without using other containers to measure the water volume, which is convenient and fast, avoids the problem of taking too much or too little water, and thus improves the user's experience.

[0109] Considering that during the shutdown of the purified drinking water machine 001, the concentrated water may be reverse osmosis through the membrane of the reverse osmosis filter core 53 back to the water inlet side, resulting in an increase in the content of impurities such as salt in the first cup of water when restarting, in view of this, please refer to Figure 5 , the purified water system 003 further comprises a purified water backflow pipeline 56, one end of the purified water backflow pipeline 56 is in communication with the water outlet of the reverse osmosis filter core 53, and the other end of the purified water backflow pipeline 56 is in communication with the water inlet of the reverse osmosis filter core 53. In this way, when the purified drinking water machine 001 is turned on, the water flowing out of the water outlet of the reverse osmosis filter core 53 first enters the water inlet of the reverse osmosis filter core 53 through the purified water backflow pipeline 56, so that the reverse osmosis filter core 53 re-filters the water, ensuring that the TDS value of the first cup of water is normal, so that the user does not need to discard a certain amount of water to ensure water safety, thereby avoiding wasting water resources.

[0110] It should be noted that the purified water backflow pipeline 56 can include a purified water backflow pipeline 561 and a one-way valve, which can prevent the soft water of the soft water system 002 from directly bypassing the reverse osmosis filter core 53 through the purified water backflow pipeline 561. The purified water backflow pipeline 56 can also include a purified water backflow control member 562, which controls the flow of the purified water backflow pipeline 56. The purified water backflow pipeline 56 can also include a purified water backflow pipeline 561, a purified water backflow control member 562, and a water pump, which drives water from the water outlet of the reverse osmosis filter core 53 to the water inlet of the reverse osmosis filter core 53. Herein, no specific limitation is made.

[0111] Preferably, please refer to Figure 5, the pure water return pipeline 56 comprises a pure water return pipeline 561 and a pure water return control member 562, one end of the pure water return pipeline 561 is in communication with the water outlet of the reverse osmosis filter element 53, the other end of the pure water return pipeline 561 is in communication with the water inlet of the reverse osmosis filter element 53, and the pure water return control member 562 is arranged on the pure water return pipeline 561 and is used to control whether the pure water return pipeline 561 is in communication. In this way, the pure water return control member 562 can close the pure water return pipeline 561, so as to avoid that the water flowing out of the water outlet of the reverse osmosis filter element 53 enters the pure water return pipeline 561 and causes the water outlet efficiency of the purified drinking water machine 001 to be reduced, and when the user first opens the purified drinking water machine 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 pipeline 561 and returns to the water inlet of the reverse osmosis filter element 53.

[0112] It should be noted that there are many working modes of the pure water return pipeline 56, for example, when the purified drinking water machine 001 is stopped, the pure water return control member 562 can be kept in an open state, so that the water in the reverse osmosis filter element 53 is kept circulating and filtering through the pure water return pipeline 561, when the user opens the purified drinking water machine 001, the pure water return control member 562 is closed, and the purified drinking water machine 001 can provide drinkable pure water in time, thereby improving the user experience. For another example, when the purified drinking water machine 001 is started, the pure water return control member 562 is started, the hot tank water supplement valve 251 or the pure water outlet valve 003a is kept closed, after the pure water completes the return step, the pure water return control member 562 is closed, and the hot tank water supplement valve 251 or the pure water outlet valve 003a is opened, and here, the above-mentioned working modes are not listed one by one.

[0113] Specifically, referring to Figure 6 The pure water return control member 562 is a pure water return one-way valve 563. In this way, 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 pipeline 561.

[0114] Preferably, the water outlet of the pure water return pipeline 56 is in communication with the water inlet end of the booster pump 70. In this way, 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 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 filtering efficiency, thereby optimizing the structure of the purified drinking water machine 001.

[0115] Please refer to Figure 4In some embodiments, the hot water system 004 comprises a hot tank assembly 20 and a water pump 30, the water inlet of the hot tank assembly 20 is communicated with the water outlet of the reverse osmosis filter 53, and the water inlet of the water pump 30 is communicated with the water outlet of the hot tank assembly 20. In this way, the pure water can be stored in the hot tank assembly 20, and the hot tank assembly 20 can quickly provide hot water when the user needs 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 pump 30 can improve the water outlet efficiency of the hot tank assembly 20.

[0116] In some embodiments, referring to Figure 4 , the waste water return pipeline 55 comprises a waste water return pipe 551 and a waste water return control member 552, both ends of the waste water return pipe 551 are communicated with the water inlet of the reverse osmosis filter 53 and the waste water outlet of the reverse osmosis filter 53, and the waste water return control member 552 is arranged in the waste water return pipe 551 to control the flow in the waste water return pipe 551. In this way, the flow rate of the concentrated water in the waste water return pipe 551 is controlled by the waste water return control member 552, so that the filtering efficiency of the reverse osmosis filter 53 is in an optimal state, a certain amount of soft water can be processed in a unit of time, and the soft water is effectively separated into pure water and concentrated water, the system runs stably, the ratio of the amount of pure water and the amount of concentrated water is relatively stable, and the designed processing capacity can be met.

[0117] When the flow rate in the waste water return pipeline 55 is too slow, the concentrated water stays on the membrane surface of the reverse osmosis filter 53 for too long, which hinders the contact and separation process of the subsequent water with the membrane of the reverse osmosis filter 53, reduces the filtering efficiency of the reverse osmosis filter 53, and causes the water outlet to decrease and the amount of soft water processed in a unit of time to decrease. When the flow rate in the waste water return pipeline 55 is too fast, although the concentrated water can be quickly taken away, the pressure difference on both sides of the membrane may change, the driving force of the water molecules passing through the membrane of the reverse osmosis filter 53 is affected, the filtering efficiency is reduced, the water production is not increased but decreased, and the energy consumption may be increased.

[0118] Preferably, referring to Figure 5 , the waste water return control member 552 is a waste water control valve 553, which can adjust the flow in the waste water return pipe 551. In this way, the user can adjust the waste water control valve 553 according to the needs, so as to adjust the flow rate in the waste water return pipe 551. For example, after replacing the reverse osmosis filter 53, the waste water control valve 553 can be adjusted to reduce the flow rate of the water in the waste water return pipe 551, so as to increase the pressure of the reverse osmosis filter 53, and then improve the filtering effect of the reverse osmosis filter 53. For another example, after the reverse osmosis filter 53 is used for a long time, the waste water control valve 553 can be adjusted to increase the flow rate of the water in the waste water return pipe 551, so as to reduce the pressure on the reverse osmosis filter 53, and then avoid damaging the reverse osmosis filter 53 due to the large pressure.

[0119] In some embodiments, referring to Figure 6 The wastewater backflow control member 552 is a wastewater control plug 554 for fixing the flow rate of water in the wastewater backflow pipe 551, so that the change of the flow rate of water in the wastewater backflow pipe 551 does not affect the reverse osmosis filter core 53.

[0120] Further, referring to Figure 4 The water inlet end of the booster pump 70 is in communication with the water outlet end of the wastewater backflow control member 552. In this way, the booster pump 70 can drive the flow of water in the wastewater backflow pipe 551 and pressurize the reverse osmosis filter core 53 to improve the filtering efficiency, thereby optimizing the structure of the purified drinking water machine 001.

[0121] Further, referring to Figure 5 The water inlet end of the booster pump 70 is in communication with the water outlet of the pure water backflow pipe 56 and the water outlet of the wastewater backflow pipe 55. In this way, the booster pump 70 can drive the flow of water in the pure water backflow pipe 56, thereby improving the backflow efficiency of the pure water backflow pipe 56 and shortening the waiting time of the user. At the same time, the booster pump 70 can drive the flow of water in the pure water backflow pipe 56, pressurize the reverse osmosis filter core 53 to improve the filtering efficiency, and drive the flow of water in the wastewater backflow pipe 55, thereby optimizing the structure of the purified drinking water machine 001.

[0122] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the positional relationship described in the drawings is only for exemplary illustration, and cannot be understood as a limitation of the present patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0123] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as implying or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0124] In the description of the application, unless otherwise clearly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0125] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a mediating element. When an element is referred to as "connected to" another element, it can be directly connected to another element or there can be a mediating element. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and the like used herein are for illustrative purposes only and do not represent the only implementation.

[0126] The above is only a specific implementation of the application, but the protection scope of the application is not limited thereto, any skilled in the art within the technical scope disclosed by the application, can easily think of changes or replacements, should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A water purifier, characterized in that, include: A soft water system is connected to the raw water inlet of the water purifier; as well as A water purification system includes a reverse osmosis filter element, a wastewater return pipeline, and a booster pump. The inlet of the reverse osmosis filter element is connected to the outlet of the soft water system, and the outlet of the reverse osmosis filter element is connected to the pure water outlet of the water purifier. The inlet of the wastewater return pipeline is connected to the wastewater outlet of the reverse osmosis filter element, and the outlet of the wastewater return pipeline is connected to the inlet of the reverse osmosis filter element. The booster pump is located between the outlet of the soft water system and the inlet of the reverse osmosis filter element.

2. The water purifier as described in claim 1, characterized in that, The water purification system also includes: A pure water outlet valve is located between the pure water outlet and the outlet of the reverse osmosis filter element.

3. The water purifier as described in claim 1, characterized in that, The water purification system also includes: The wastewater drainage pipe is connected to the wastewater outlet of the reverse osmosis filter element and is used to discharge the concentrated water from the reverse osmosis filter element.

4. The water purifier as described in claim 3, characterized in that, The wastewater drainage pipeline includes: A wastewater drain pipe is connected to the wastewater outlet of the reverse osmosis filter element; and Wastewater drain valve, installed on the wastewater drain pipe.

5. The water purifier as described in claim 1, characterized in that, The wastewater return pipeline includes: A wastewater return pipe, the two ends of which are respectively connected to the inlet of the reverse osmosis filter element and the wastewater outlet of the reverse osmosis filter element; and A wastewater return control component is installed on the wastewater return pipe to control the flow rate within the wastewater return pipe.

6. The water purifier as described in claim 5, characterized in that, The wastewater return control component is a wastewater control valve, which can adjust the flow rate in the wastewater return pipe; or The wastewater recirculation control component is a wastewater control plug.

7. The water purifier as described in claim 5, characterized in that, The outlet of the wastewater recirculation control component is connected to the inlet of the booster pump.

8. The water purifier as described in any one of claims 1-7, characterized in that, The water purification system also includes: The pure water return pipeline is connected at one end to the outlet of the reverse osmosis filter element and at the other end to the inlet of the reverse osmosis filter element.

9. The water purifier as described in claim 8, characterized in that, The pure water return pipeline includes: A pure water return pipe, one end of which is connected to the outlet of the reverse osmosis filter element, and the other end of which is connected to the inlet of the reverse osmosis filter element; and A pure water reflux control component is installed in the pure water reflux pipe to control whether the pure water reflux pipe is open.

10. The water purifier as described in claim 9, characterized in that, The pure water reflux control component is a pure water reflux check valve.

11. The water purifier as described in claim 8, characterized in that, The outlet of the pure water return pipeline is connected to the inlet of the booster pump.

12. The water purifier as described in claim 1, characterized in that, The soft water system includes: Resin tank; and A water softener valve, wherein the inlet of the water softener valve is connected to the raw water inlet, the outlet of the water softener valve is connected to the inlet of the reverse osmosis filter element, and the inlet and outlet of the water softener valve are connected through the resin tank.

13. The water purifier as described in claim 12, characterized in that, The soft water system also includes: The brine tank assembly is connected to the brine tank connector of the water softener valve, and the brine tank connector of the water softener valve is connected to the drain connector of the water softener valve through the resin tank.

14. The water purifier as described in claim 12, characterized in that, The soft water system also includes: A soft water quality testing device, wherein the soft water quality testing device is connected to the outlet of the soft water valve.

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