Water purifier

Abstract

A water inlet pipeline is configured to allow tap water to flow into the water purifier, a water inlet of an RO membrane filter element is connected with the water inlet pipeline, the RO membrane filter element is configured to filter the tap water flowing through the RO membrane filter element so as to obtain purified water, and a water outlet pipeline is configured to be connected with a water outlet of the RO membrane filter element so as to allow the purified water prepared by the RO membrane filter element to flow out. The water outlet end and the water inlet end of the water storage branch are respectively connected with the water outlet pipeline, the water inlet end is positioned at the downstream of the water outlet end, and a water storage tank is arranged on the water storage branch and is configured to store purified water. And the purified water in the water storage tank flows into the water outlet pipeline and is converged with the purified water flowing out of the RO membrane filter element, so that the purified water yield of the water purifier is increased. According to the water purifier disclosed by the invention, an RO membrane filter element with a larger membrane area and a booster pump with higher power do not need to be configured, and double RO membrane filter elements do not need to be used, so that the large-flux use requirement can be met, and noise and cost increase cannot be caused.

Description

Technical Field

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

[0002] An RO (reverse osmosis) machine is a pure water machine that pressurizes raw water through reverse osmosis filtration, filters out some impurities using physical principles, and produces pure water that can be directly drunk by humans without adding any compounds. It is also called a terminal water purification device.

[0003] The normal flux of an RO machine is usually between 400 - 1200G, which cannot meet the needs of users for large flux, resulting in a long water connection time. To increase the flux of the RO machine, there are usually the following two improvement methods:

[0004] First, use an RO membrane filter element with a larger membrane area and a booster pump with a higher power. For example, an RO machine uses a 1800G filter element and a 1800G booster pump. Its disadvantage is that although the purified water output can be increased, the noise of the whole machine increases, and the problem of high TDS in the first glass of water will occur with the RO membrane filter element with a larger membrane area.

[0005] Second, use a double RO membrane filter element to filter the wastewater after the first - stage RO membrane filter element again through the second - stage RO membrane filter element to increase the purified water output. Its disadvantage is that it increases the cost of the whole machine and the cost of replacing the filter element, and there is also the problem of increased noise of the whole machine.

[0006] The above - mentioned information disclosed in this background art is only used to increase the understanding of the background art of this application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Summary of the Invention

[0007] In view of the problems pointed out in the background art, the utility model provides a water purifier, which realizes large flux, low cost, and low noise, and improves the user experience.

[0008] To achieve the above - mentioned utility model purpose, the utility model adopts the following technical solutions:

[0009] In some embodiments, a water purifier is provided, including:

[0010] An inlet water pipeline configured to supply tap water to flow into the water purifier;

[0011] An RO membrane filter element, the water inlet of which is connected to the inlet water pipeline, and the RO membrane filter element is configured to filter the flowing tap water to obtain purified water;

[0012] A water outlet pipe, configured to be connected to the water outlet of the RO membrane filter element for the purified water prepared by the RO membrane filter element to flow out;

[0013] A water storage branch, the water outlet end and the water inlet end of the water storage branch are respectively connected to the water outlet pipe, and a water storage tank is arranged on the water storage branch;

[0014] Wherein, the purified water in the water storage tank flows into the water outlet pipe and converges with the purified water flowing out from the RO membrane filter element to increase the purified water output of the water purifier.

[0015] In some embodiments, the water storage branch includes a first water storage branch and a second water storage branch. The first water storage branch is connected between the water outlet of the water storage tank and the water outlet pipe, and the second water storage branch is connected between the water inlet of the water storage tank and the water outlet pipe. A water pump or a solenoid valve is arranged on the first water storage branch.

[0016] In some embodiments, a second one-way valve is arranged on the first water storage branch.

[0017] In some embodiments, a water replenishing solenoid valve is arranged on the second water storage branch.

[0018] In some embodiments, the second water storage branch is connected to the water outlet pipe through a three-way valve.

[0019] In some embodiments, a first one-way valve and a water discharge solenoid valve are arranged on the water outlet pipe. The first one-way valve is located upstream of the water outlet end of the first water storage branch, and the water discharge solenoid valve is located downstream of the water inlet end of the second water storage branch.

[0020] In some embodiments, the flow rate of the water pump is greater than 4 L / min.

[0021] In some embodiments, a booster pump is arranged on the water inlet pipe.

[0022] In some embodiments, a water inlet solenoid valve and a pre-filter are arranged on the water inlet pipe. The pre-filter is located upstream of the water inlet solenoid valve, and the water inlet solenoid valve is located upstream of the booster pump.

[0023] In some embodiments, the water output of the RO membrane filter element is less than 600 G.

[0024] In some embodiments, in the first working state of the water purifier, the water inlet pipe, the water outlet pipe, and the first water storage branch are opened, the water replenishing solenoid valve is closed, and the purified water in the water storage tank flows into the water outlet pipe through the first water storage branch and converges with the purified water flowing out from the RO membrane filter element to increase the purified water output of the water purifier.

[0025] In some embodiments, when the water purifier is in the second working state, the water inlet pipeline and the second water storage branch are opened, the first one-way valve is opened, the water pump and the second one-way valve are closed, and the water discharge solenoid valve is closed. The purified water flowing out of the RO membrane filter element flows into the water storage tank through the second water storage branch for storage.

[0026] In some embodiments, when the water purifier is in the third working state, the water inlet pipeline and the water outlet pipeline are opened, and the water storage branch is closed.

[0027] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0028] When the water purifier of the present disclosure is in use, the water inlet pipeline and the water outlet pipeline are opened. Tap water flows into the RO membrane filter element through the water inlet pipeline, and after being filtered by the RO membrane filter element, it becomes purified water. The purified water flows out through the water outlet pipeline. At the same time, the purified water in the water storage tank flows into the water outlet pipeline through the water storage branch and converges with the purified water flowing out of the RO membrane filter element. The two streams of purified water converge and flow out through the water outlet pipeline for the user to use. This water purifier stores purified water through the water storage tank, and the water storage tank and the RO membrane filter element supply water to the user's water-using end simultaneously, thereby increasing the purified water output of the water purifier. This water purifier can meet the large-flux usage requirements without configuring an RO membrane filter element with a larger membrane area and a booster pump with a higher power, and without using a double RO membrane filter element, and will not cause an increase in noise and cost.

[0029] After reading the specific embodiments of the present utility model in conjunction with the accompanying drawings, other features and advantages of the present utility model will become clearer. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 It is a schematic diagram of the water circuit of the water purifier in the first working state according to some embodiments;

[0032] Figure 2 It is a schematic diagram of the water circuit of the water purifier in the second working state according to some embodiments;

[0033] Figure 3 It is a schematic diagram of the water circuit of the water purifier in the third working state according to some embodiments;

[0034] Figure 4 It is a schematic diagram of the water circuit of the water purifier according to other embodiments;

[0035] Figure 5 Schematic diagram of the water circuit of a water purifier according to some other embodiments;

[0036] Reference numerals:

[0037] 10. Inlet water pipeline; 11. Pre-filter element; 12. Inlet water solenoid valve; 13. Booster pump;

[0038] 20. Outlet water pipeline; 21. First check valve; 22. Drain solenoid valve;

[0039] 30. Water storage branch; 31. First water storage branch; 32. Second water storage branch; 33. Water storage tank; 34. Make-up water solenoid valve; 35. Water extraction pump; 36. Second check valve; 37. Three-way valve; 371. First end of the three-way valve; 372. Second end of the three-way valve; 373. Third end of the three-way valve; 38. Solenoid valve;

[0040] 40. Drainage pipeline; 41. Third check valve;

[0041] 50. RO membrane filter element. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0043] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore cannot be understood as a limitation to the present application.

[0044] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0045] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. 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 situations.

[0046] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0047] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0048] The present disclosure provides a water purifier, referring to Figure 1 , specifically an RO water purifier.

[0049] The water purifier includes a water inlet pipeline 10, and the water inlet pipeline 10 is configured to allow tap water to flow into the water purifier. In other words, one end of the water inlet pipeline 10 is connected to the tap water pipe in the user's home, and the tap water in the tap water pipe flows into the water purifier through the water inlet pipeline 10. The water purifier filters and purifies the tap water to obtain purified water.

[0050] The water purifier includes an RO membrane filter element 50, and the water inlet of the RO membrane filter element 50 is connected to the water inlet pipeline 10. The RO membrane filter element 50 is configured to filter the flowing tap water to obtain purified water.

[0051] The water purifier includes a water outlet pipe 20. The water outlet pipe 20 is configured to be connected to the water outlet of the RO membrane filter element 50 so as to allow the purified water prepared by the RO membrane filter element 50 to flow out. In other words, the tap water becomes purified water after being filtered through the RO membrane filter element 50, and the purified water then flows out through the water outlet pipe 20 for use by the user.

[0052] The water purifier includes a water storage branch 30. The water outlet and water inlet of the water storage branch 30 are respectively connected to the water outlet pipeline 20. A water storage tank 33 is arranged on the water storage branch 30, and the water storage tank 33 is configured to store purified water.

[0053] The water storage tank 33 serves to store purified water. The water purifier has a second working state, which is a process of replenishing water to the water storage tank 33 .

[0054] Reference Figure 2 In the second working state of the water purifier, tap water flows into the RO membrane filter element 50 through the water inlet pipe 10, and becomes purified water after being filtered by the RO membrane filter element 50. The purified water flows into the water storage tank 33 through the water storage branch 30 for storage, so that the water storage tank 33 can be replenished when the user is not taking water.

[0055] The water purifier has a first working state, referring to Figure 1 In the first working state of the water purifier, the water inlet pipe 10 and the water outlet pipe 20 are opened, and the tap water flows into the RO membrane filter element 50 through the water inlet pipe 10, and becomes clean water after being filtered by the RO membrane filter element 50. The clean water flows out through the water outlet pipe 20. At the same time, the clean water in the water storage tank 33 flows into the water outlet pipe 20 through the water storage branch 30, and merges with the clean water flowing out of the RO membrane filter element 50. After the two streams of clean water merge, they flow out from the water outlet pipe 20 for use by users.

[0056] In the first working state, the water purifier produces water through the RO membrane filter element 50 and supplies water through the water storage tank 33. The two paths of purified water are combined and then supplied to the user, thereby increasing the purified water output of the water purifier.

[0057] The water purifier disclosed in the present invention does not need to be equipped with an RO membrane filter element 50 with a larger membrane area and a higher-power booster pump, nor does it need to use a double RO membrane filter element, and can meet the demand for large-flux usage without causing an increase in noise or cost.

[0058] In some embodiments, reference Figure 4 The water storage branch 30 includes a first water storage branch 31 and a second water storage branch 32. The first water storage branch 31 is connected between the water outlet of the water tank 33 and the water outlet pipeline 20, and the second water storage branch 32 is connected between the water inlet of the water tank 33 and the water outlet pipeline 20.

[0059] In some embodiments, a water pump 35 is provided on the first water storage branch 31. The water pump 35 provides power for the water storage tank 33 to discharge water.

[0060] In some embodiments, the water pump 35 serves both to open and close the first water storage branch 31. When the water storage tank 33 needs to supply purified water to the water outlet pipe 20, the water pump 35 is turned on. When the water storage tank 33 does not need to supply purified water to the water outlet pipe 20, the water pump 35 is turned off.

[0061] In some embodiments, referring to Figure 4 , a second one-way valve 36 is provided on the first water storage branch 31. The second one-way valve 36 is configured to prevent the purified water in the first water storage branch 31 from flowing back into the water storage tank 33.

[0062] When the water storage tank 33 needs to supply purified water to the water outlet pipe 20, the water pump 35 and the second one-way valve 36 are opened. When the water storage tank 33 does not need to supply purified water to the water outlet pipe 20, the water pump 35 and the second one-way valve 36 are closed.

[0063] In some embodiments, referring to Figure 5 , a solenoid valve 38 is provided on the first water storage branch 31, and the solenoid valve 38 serves to open and close the first water storage branch 31. When the solenoid valve 38 is applied, the position of the water storage tank 33 is higher than that of the water outlet pipe 20, and the purified water in the water storage tank 33 flows into the water outlet pipe 20 through the first water storage branch 31 by the action of gravity.

[0064] When the water storage tank 33 needs to supply purified water to the water outlet pipe 20, the solenoid valve 38 is opened, and the purified water in the water storage tank 33 flows into the water outlet pipe 20 through the first water storage branch 31 under the action of gravity. When the water storage tank 33 does not need to supply purified water to the water outlet pipe 20, the solenoid valve is closed.

[0065] In some embodiments, referring to Figure 1 , a water replenishing solenoid valve 34 is provided on the second water storage branch 32. The water replenishing solenoid valve 34 is configured to open or close the second water storage branch 32.

[0066] When purified water needs to be replenished into the water storage tank 33, the water replenishing solenoid valve 34 is opened. When purified water does not need to be replenished into the water storage tank 33, the water replenishing solenoid valve 34 is closed.

[0067] In some embodiments, referring to Figure 4 , the second water storage branch 32 is connected to the water outlet pipe 20 through a three-way valve 37.

[0068] The first end 371 of the three-way valve 37 is connected to the second water storage branch 32, and the second end 372 and the third end 373 of the three-way valve 37 are connected to the water outlet pipe 20.

[0069] When purified water needs to be provided to the user water consumption end through the water outlet pipe 20, the second end 372 and the third end 373 of the three-way valve 37 are communicated to conduct the water outlet pipe 20.

[0070] When it is necessary to replenish clean water into the water storage tank 33, the first end 371 and the third end 373 of the three-way valve 37 are opened, and the clean water in the water outlet pipeline 20 flows into the second water storage branch 32 through the three-way valve 37. When it is not necessary to replenish clean water into the water storage tank 33, the first end 371 of the three-way valve 37 is closed.

[0071] In some embodiments, referring to Figure 1 , a booster pump 13 is provided on the water inlet pipeline 10. The booster pump 13 is configured to increase the pressure of the tap water in the water inlet pipeline 10.

[0072] In some embodiments, referring to Figure 1 , a water inlet solenoid valve 12 and a pre-filter 11 are provided on the water inlet pipeline 10. The pre-filter 11 is located upstream of the water inlet solenoid valve 12, and the water inlet solenoid valve 12 is located upstream of the booster pump 13.

[0073] Closing the water inlet pipeline 10 means closing the water inlet solenoid valve 12 and the booster pump 13. Opening the water inlet pipeline 10 means opening the water inlet solenoid valve 12 and the booster pump 13.

[0074] In some embodiments, the water pump 35 is an impeller pump.

[0075] In some embodiments, the flow rate of the water pump 35 is greater than 4 L / min.

[0076] In some embodiments, the water output of the RO membrane filter element 50 is less than 600 G. For example, an RO membrane filter element with a water output of 600 G or 400 G is selected.

[0077] In some embodiments, the first one-way valve 21 is a two-way one-way valve, and the second one-way valve 36 is a three-way one-way valve.

[0078] In some embodiments, the wastewater outlet of the RO membrane filter element 50 is connected to a drainage pipeline 40, and a third one-way valve 41 is provided on the drainage pipeline 40.

[0079] In some embodiments, the water purifier has a first working state. Referring to Figure 1 , when the water purifier is in the first working state, the water inlet pipeline 10, the water outlet pipeline 20, and the first water storage branch 31 are opened, the second water storage branch 32 is closed, and the clean water in the water storage tank 33 flows into the water outlet pipeline 20 through the first water storage branch 31 and converges with the clean water flowing out of the RO membrane filter element 50 to increase the clean water output of the water purifier. Specifically, Figure 1Taking the illustrated embodiment as an example, when the water purifier is in the first working state, the water inlet solenoid valve 12, the booster pump 13, the first one-way valve 21, the water discharge solenoid valve 22, the water pump 35 and the second one-way valve 36 are opened, and the water replenishment solenoid valve 34 is closed. The tap water flows into the RO membrane filter element 50 through the water inlet solenoid valve 12 and the booster pump 13 in sequence, and becomes the first path of purified water after filtration. At the same time, the purified water (the second path of purified water) in the water storage tank 33 flows through the water pump 35 and the second one-way valve 36 in sequence to the downstream water outlet pipe 20 of the first one-way valve 21. The first path of purified water and the second path of purified water are combined in the downstream water outlet pipe 20 of the first one-way valve 21, and the two paths of purified water are superimposed, thereby increasing the purified water output of the water purifier, meeting the user's large flow usage requirements, shortening the water connection time, and improving the user experience.

[0080] For example, the RO membrane filter element 50 uses a water output of 600G or 400G, so that the flow rate of the first purified water can reach 1.0L / min or 1.5L / min, and the flow rate of the second purified water is, for example, 4-5L / min. The two purified waters are combined and superimposed to obtain a large flow rate of 4.5L / min or 5.5L / min. This initial flow rate can be converted into 1800G or 2000G.

[0081] In some embodiments, a first one-way valve 21 and a water drain solenoid valve 22 are provided on the water outlet pipe 20 , the first one-way valve 21 is located upstream of the water outlet end of the first water storage branch 31 , and the water drain solenoid valve 22 is located downstream of the water inlet end of the second water storage branch 32 .

[0082] Reference Figure 2 When the water purifier is in the second working state, the water inlet pipe 10 and the second water storage branch 32 are opened, the first one-way valve 21 is opened, the first water storage branch 31 is closed, and the water discharge solenoid valve 22 is closed. The purified water flowing out of the RO membrane filter element 50 flows into the water storage tank 33 through the second water storage branch 32 for storage, so that the water storage tank 33 can be replenished when the user is not taking water.

[0083] Specifically, Figure 2 Taking the illustrated embodiment as an example, when the user does not take water, the water purifier can execute the second working state, at which time the water inlet solenoid valve 12, the booster pump 13, the first one-way valve 21, and the water replenishment solenoid valve 34 are opened, and the water discharge solenoid valve 22, the water pump 35 and the second one-way valve 36 are closed, and the tap water flows through the water inlet solenoid valve 12 and the booster pump 13 to the RO membrane filter element 50 in turn, and clean water is obtained after filtration. The clean water flows into the water storage tank 33 through the first one-way valve 21 and the water replenishment solenoid valve 34 in turn, so as to replenish the water storage tank 33.

[0084] In some embodiments, reference Figure 3, the water purifier has a third working state. In the third working state, the water inlet pipeline 10 and the water outlet pipeline 20 are opened, and the water storage branch 30 is closed. That is, the first water storage branch 31 and the second water storage branch 32 are closed. At this time, the water output of the water purifier is only obtained by the RO membrane filter element 50.

[0085] Specifically, taking Figure 3 the illustrated embodiment as an example, when the user does not need to draw water with a large flow rate or there is a lack of purified water in the water storage tank 33, the water purifier executes the third working state. At this time, the inlet solenoid valve 12, the booster pump 13, the first one-way valve 21 and the drain solenoid valve 22 are opened, and the make-up water solenoid valve 34, the water pump 35 and the second one-way valve 36 are closed. The tap water flows through the inlet solenoid valve 12 and the booster pump 13 to the RO membrane filter element 50 in sequence, and the purified water is obtained after filtration. The purified water then flows out through the first one-way valve 21 and the drain solenoid valve 22 in sequence for the user to use.

[0086] In the description of the above embodiments, the specific features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0087] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A water purifier, characterized in that: include: a water inlet pipeline configured to supply tap water into the water purifier; An RO membrane filter element, wherein the water inlet of the RO membrane filter element is connected to the water inlet pipeline, and the RO membrane filter element is configured to filter the tap water flowing therethrough to obtain purified water; a water outlet pipeline configured to be connected to the water outlet of the RO membrane filter element so as to allow the purified water prepared by the RO membrane filter element to flow out; A water storage branch, the water outlet and water inlet of the water storage branch are respectively connected to the water outlet pipeline, and a water storage tank is arranged on the water storage branch; The purified water in the water storage tank flows into the water outlet pipeline and merges with the purified water flowing out of the RO membrane filter element to increase the purified water output of the water purifier.

2. The water purifier according to claim 1, characterized in that: The water storage branch includes a first water storage branch and a second water storage branch, the first water storage branch is connected between the water outlet of the water storage tank and the water outlet pipeline, the second water storage branch is connected between the water inlet of the water storage tank and the water outlet pipeline, and a water pump or a solenoid valve is arranged on the first water storage branch.

3. The water purifier according to claim 2, characterized in that: A second one-way valve is arranged on the first water storage branch.

4. The water purifier according to claim 2, characterized in that: A water replenishment solenoid valve is arranged on the second water storage branch.

5. The water purifier according to claim 2, characterized in that: The second water storage branch is connected to the water outlet pipeline through a three-way valve.

6. The water purifier according to claim 2, characterized in that: A first one-way valve and a water discharge solenoid valve are arranged on the water outlet pipeline. The first one-way valve is located upstream of the water outlet end of the first water storage branch, and the water discharge solenoid valve is located downstream of the water inlet end of the second water storage branch.

7. The water purifier according to claim 2, characterized in that: The flow rate of the water pump is greater than 4L / min.

8. The water purifier according to any one of claims 1 to 7, characterized in that: A booster pump is arranged on the water inlet pipeline.

9. The water purifier according to claim 8, characterized in that: A water inlet solenoid valve and a pre-filter are arranged on the water inlet pipeline. The pre-filter is located upstream of the water inlet solenoid valve, and the water inlet solenoid valve is located upstream of the booster pump.

10. The water purifier according to any one of claims 1 to 7, characterized in that: The water output of the RO membrane filter element is less than 600G.

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