Water purifier

Abstract

The utility model relates to domestic appliance technical field, concretely provides a water purifier, and aims at solving the problem that the existing water purifier has complex pipeline connection, higher cost and poor cleaning effect. The water purifier of the application includes reverse osmosis membrane filter element and filter filter element, and the filter filter element includes casing and filter filter material, the casing has first chamber and second chamber, and first cleaning agent and second cleaning agent are respectively arranged in the first chamber and the second chamber, and the filter filter material is arranged in the first chamber and / or the second chamber, and the first cleaning agent and the second cleaning agent can be transported to the reverse osmosis membrane filter element after dissolving to clean the reverse osmosis membrane filter element. The application can clean the reverse osmosis membrane filter element when replacing the filter filter element, and does not need to set up the external cleaning module, thereby simplifying the pipeline connection of the water purifier, reducing the cost, by setting up two kinds of cleaning agent, can remove different types of dirt on the reverse osmosis membrane filter element, improve the cleaning effect, prolong the service life.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically providing a water purifier. Background Technology

[0002] As people's living standards improve, their demand for drinking water is also increasing. Water dispensers, tea dispensers, pipeline water dispensers, and integrated water purifiers are gradually becoming essential drinking water facilities in people's daily lives.

[0003] After prolonged use, dirt and grime in the water will adhere to the inside of the reverse osmosis membrane filter element, affecting the water production rate of the water purification equipment and thus the service life of the reverse osmosis membrane filter element. If the reverse osmosis membrane filter element continues to be used for a long time, it will reduce the quality of the water produced by the water purification equipment. If the reverse osmosis membrane filter element is replaced frequently, the high cost of replacing the reverse osmosis membrane filter element will lead to a high operating cost of the water purification equipment.

[0004] In existing technologies, cleaning reverse osmosis membrane filter cartridges with detergents can extend their service life. However, existing water purification equipment usually has the cleaning module externally installed, meaning the cleaning module is connected to the main water inlet line via pipes and valves. This results in complex piping connections and higher costs. Furthermore, since the dirt on reverse osmosis membrane filter cartridges is mostly divided into organic and inorganic dirt, it is difficult to clean the dirt off the filter cartridges completely using only one type of detergent, leading to poor cleaning results. Utility Model Content

[0005] The present invention aims to solve the above-mentioned technical problems to at least a certain extent, namely, to solve the problems of complex pipe connections, high cost and poor cleaning effect of existing water purifiers.

[0006] In a first aspect, the present invention provides a water purifier comprising: a reverse osmosis membrane filter element; and a filter element comprising a housing and filter media disposed within the housing, the housing having a first chamber and a second chamber, the first chamber containing a first cleaning agent and the second chamber containing a second cleaning agent, the filter media being disposed within the first chamber and / or the second chamber, wherein the first and second cleaning agents within the filter element, after dissolving, can be delivered to the reverse osmosis membrane filter element to clean it.

[0007] In the preferred embodiment of the above-mentioned water purifier, the filter element is a pre-filter element, and the housing is provided with a first pre-inlet and a first pre-outlet communicating with the first chamber, and a second pre-inlet and a second pre-outlet communicating with the second chamber. The first pre-inlet and the second pre-inlet can both be connected to a water source, and the first pre-outlet and the second pre-outlet can be selectively connected to the inlet end of the reverse osmosis membrane filter element.

[0008] In the preferred embodiment of the above-mentioned water purifier, the water purifier further includes a first pre-inlet pipe and a second pre-inlet pipe. The first pre-inlet is connected to a water source through the first pre-inlet pipe, and the second pre-inlet is connected to a water source through the second pre-inlet pipe. A first pre-inlet valve and a second pre-inlet valve are respectively provided on the first pre-inlet pipe and the second pre-inlet pipe. Alternatively, the water purifier further includes a first reversing valve, a first pre-inlet pipe, and a second pre-inlet pipe. The first port of the first reversing valve is connected to a water source. The second port of the first reversing valve is connected to the first pre-inlet through the first pre-inlet pipe. The third port of the first reversing valve is connected to the second pre-inlet through the second pre-inlet pipe. The first port of the first reversing valve can selectively connect to the second port or the third port of the second reversing valve.

[0009] In the preferred embodiment of the above-mentioned water purifier, the water purifier further includes a first pre-outlet pipe and a second pre-outlet pipe. The first pre-outlet is connected to the inlet of the reverse osmosis membrane filter element through the first pre-outlet pipe, and the second pre-outlet is connected to the inlet of the reverse osmosis membrane filter element through the second pre-outlet pipe. A first pre-outlet valve is provided on the first pre-outlet pipe, and a second pre-outlet valve is provided on the second pre-outlet pipe. Alternatively, the water purifier further includes a second reversing valve, a first pre-outlet pipe, and a second pre-outlet pipe. The first port of the second reversing valve is connected to the first pre-outlet through the first pre-outlet pipe, and the second port of the second reversing valve is connected to the second pre-outlet through the second pre-outlet pipe. The third port of the second reversing valve is connected to the inlet of the reverse osmosis membrane filter element, and the first or second port of the second reversing valve can selectively connect to the third port of the second reversing valve.

[0010] In the preferred embodiment of the above-mentioned water purifier, the filter element is a post-filter element, and the water purifier further includes a return pipe. The housing is provided with a first post-inlet and a first post-outlet communicating with the first chamber, and a second post-inlet and a second post-outlet communicating with the second chamber. The pure water end of the reverse osmosis membrane filter element can selectively communicate with the first post-inlet and the second post-inlet, and the first post-outlet and the second post-outlet can selectively communicate with the first end of the return pipe. The second end of the return pipe is connected to the inlet end of the reverse osmosis membrane filter element. Liquid in the first chamber or the second chamber can be transported to the reverse osmosis membrane filter element through the return pipe.

[0011] In the preferred embodiment of the above-mentioned water purifier, the water purifier further includes a first post-inlet pipe and a second post-inlet pipe. The pure water end of the reverse osmosis membrane filter element is connected to the first post-inlet port through the first post-inlet pipe, and the pure water end of the reverse osmosis membrane filter element is also connected to the second post-inlet port through the second post-inlet pipe. A first post-inlet valve is provided on the first post-inlet pipe, and a second post-inlet valve is provided on the second post-inlet pipe. Alternatively, the water purifier further includes a third reversing valve, a first post-inlet pipe, and a second post-inlet pipe. The pure water end of the reverse osmosis membrane filter element is connected to the first interface of the third reversing valve. The second interface of the third reversing valve is connected to the first post-inlet port through the first post-inlet pipe, and the third interface of the third reversing valve is connected to the second post-inlet port through the second post-inlet pipe. The first interface of the third reversing valve can selectively connect to either the second or third interface of the third reversing valve.

[0012] In the preferred embodiment of the above-mentioned water purifier, the water purifier further includes a first post-outlet pipe and a second post-outlet pipe. The first post-outlet pipe is connected to the first end of the return pipe through the first post-outlet pipe, and the second post-outlet pipe is connected to the first end of the return pipe through the second post-outlet pipe. A first post-outlet valve and a second post-outlet valve are respectively provided on the first post-outlet pipe and the second post-outlet pipe. Alternatively, the water purifier further includes a fourth reversing valve, a first post-outlet pipe, and a second post-outlet pipe. The first port of the fourth reversing valve is connected to the first end of the return pipe. The first post-outlet pipe is connected to the second port of the fourth reversing valve through the first post-outlet pipe, and the second post-outlet pipe is connected to the third port of the fourth reversing valve through the second post-outlet pipe. The first port of the fourth reversing valve can selectively connect to either the second port or the third port of the fourth reversing valve.

[0013] In the preferred embodiment of the above-mentioned water purifier, the booster pump of the water purifier is located at the upstream end of the reverse osmosis membrane filter element. The booster pump has a water production working mode. When the booster pump is in the water production working mode, it can pressurize the water flowing into the reverse osmosis membrane filter element. The water purifier also includes a water quality detection component installed on the return pipe. The water quality detection component is used to detect the water quality information in the return pipe. The water quality detection component is communicatively connected to the booster pump so that the booster pump can be selectively deactivated from the water production working mode based on the detection data of the water quality detection component.

[0014] In the preferred embodiment of the above-mentioned water purifier, the water purifier further includes a circulation pipe. The first end of the circulation pipe is connected to the wastewater end of the reverse osmosis membrane filter element, and the second end is connected to the inlet end of the reverse osmosis membrane filter element, so that the inlet end and the wastewater end of the reverse osmosis membrane filter element are connected in sequence to form a cleaning loop. The booster pump of the water purifier is located at the upstream end of the reverse osmosis membrane filter element, and the second end of the circulation pipe is connected to the upstream end of the booster pump. The booster pump can drive the liquid circulation flow in the cleaning loop. Alternatively, the water purifier further includes a circulation pump, which is located on the cleaning loop and is used to drive the liquid circulation flow in the cleaning loop.

[0015] In the preferred embodiment of the above-mentioned water purifier, the booster pump includes at least a first working level and a second working level. The booster pump has a water production working mode and a circulation working mode. The booster pump also includes a level adjustment module, which is configured to adjust the working level of the booster pump to the first working level when the booster pump is in the water production working mode and to adjust the working level of the booster pump to the second working level when the booster pump is in the circulation working mode. The working pressure value and / or flow rate of the second working level is lower than the working pressure value and / or flow rate of the first working level. And / or, the water purifier further includes a dirt collection component, which is disposed on the cleaning circuit and is capable of collecting impurities within the cleaning circuit. And / or, the water purifier further includes a flow control component, which is disposed on the cleaning circuit and is used to adjust the amount of water flowing from the wastewater end of the reverse osmosis membrane filter element to the inlet end of the reverse osmosis membrane filter element.

[0016] When the above-mentioned preferred technical solution is adopted, by placing the first cleaning agent and the second cleaning agent in the first and second chambers of the filter element, the reverse osmosis membrane filter element can be cleaned when replacing the filter element without the need for an external cleaning module. This simplifies the piping connection of the water purifier, reduces the cost of the water purifier, and removes different types of dirt from the reverse osmosis membrane filter element by using two cleaning agents. This improves the cleaning effect of the reverse osmosis membrane filter element, extends its service life, and enhances the user experience.

[0017] Furthermore, by installing a water quality detection component on the return pipe, when cleaning the reverse osmosis membrane filter element, the reverse osmosis membrane filter element needs to produce water first. The pure water filtered by the reverse osmosis membrane filter element flows into the first chamber (or the second chamber), dissolving the first cleaning agent (or the second cleaning agent) and delivering it to the reverse osmosis membrane filter element through the return pipe. By installing a water quality detection component on the return pipe, when the reverse osmosis membrane filter element needs to be cleaned, it can be determined whether the first cleaning agent in the first chamber (or the second cleaning agent in the second chamber) has been completely delivered to the reverse osmosis membrane filter element. When the cleaning agent has been completely delivered to the reverse osmosis membrane filter element, a signal is transmitted to the booster pump, causing the booster pump to exit the water production mode and the reverse osmosis membrane filter element to stop producing water. This not only saves energy but also shortens the cleaning time.

[0018] Furthermore, by setting up a circulation pipe, the cleaning solution can circulate within the cleaning circuit, thereby circulating and flushing the reverse osmosis membrane filter element, more effectively cleaning off the dirt on the reverse osmosis membrane filter element, and improving the cleaning effect of the reverse osmosis membrane filter element.

[0019] Furthermore, by using a booster pump in the water purifier to drive the liquid circulation in the cleaning circuit, there is no need to install an additional pump body, which further reduces the cost and size of the water purifier. Moreover, by setting the booster pump to include at least a first voltage level and a second voltage level, when the water purifier is in cleaning mode, the booster pump can operate at a lower voltage level, resulting in lower water pressure of the cleaning liquid during circulation. On the one hand, this can prevent the cleaning liquid from seeping into the pure water end of the reverse osmosis membrane filter, reducing chemical residues. On the other hand, it can also prevent the cleaning liquid from damaging the diaphragm inside the booster pump.

[0020] Furthermore, by using a circulation pump installed on the cleaning circuit to drive the liquid circulation within the cleaning circuit, it is possible to avoid using a booster pump, thereby preventing damage to the diaphragm in the booster pump from the cleaning liquid and extending the service life of the booster pump. In addition, using a circulation pump to drive the liquid circulation within the cleaning circuit can achieve pressureless driving of the cleaning liquid circulation, which can reduce the amount of cleaning agent that permeates to the pure water end of the reverse osmosis membrane filter element, thereby reducing the residue of cleaning agent in the reverse osmosis membrane filter element.

[0021] Furthermore, by setting up a dirt collection component, when the cleaning fluid circulates in the cleaning circuit, it can intercept the dirt washed off in the cleaning fluid, preventing the dirt from re-entering the reverse osmosis membrane filter element with the cleaning fluid, thereby preventing the dirt from causing secondary pollution to the reverse osmosis membrane filter element and further improving the cleaning effect of the reverse osmosis membrane filter element. Attached Figure Description

[0022] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0023] Figure 1 This is a schematic diagram of the connection structure of a water purifier according to an embodiment of the present invention, which shows the connection and positional relationship of each component when the filter element is a pre-filter element;

[0024] Figure 2 This is a schematic diagram of the connection structure of a water purifier according to a second embodiment of the present invention, which shows the connection and positional relationship of each component when the filter element is a pre-filter element;

[0025] Figure 3 This is a schematic diagram of the connection structure of a water purifier according to Embodiment 3 of this utility model, which shows the connection and positional relationship of each component when the filter element is a pre-filter element;

[0026] Figure 4 This is a schematic diagram of the connection structure of the water purifier of this utility model in Embodiment 4, which shows the connection and positional relationship of each component when the filter element is a pre-filter element;

[0027] Figure 5 This is a schematic diagram of the connection structure of the water purifier of this utility model in embodiment five, which shows the connection and positional relationship of each component when the filter element is a post-filter element;

[0028] Figure 6 This is a schematic diagram of the connection structure of Embodiment Six of the water purifier of this utility model, which shows the connection and positional relationship of each component when the filter element is a post-filter element;

[0029] Figure 7This is a schematic diagram of the connection structure of Embodiment 7 of the water purifier of this utility model, which shows the connection and positional relationship of each component when the filter element is a post-filter element;

[0030] Figure 8 This is a schematic diagram of the connection structure of Embodiment 8 of the water purifier of this utility model, which shows the connection and positional relationships of each component when the filter element is a post-filter element.

[0031] Figure 9 This is a longitudinal sectional view of one embodiment of the pre-filter element of this utility model;

[0032] Figure 10 This is a longitudinal sectional view of another embodiment of the pre-filter element of this utility model;

[0033] Figure 11 This is a longitudinal sectional view of another embodiment of the pre-filter element of this utility model;

[0034] Figure 12 This is a schematic diagram of one embodiment of the dirt collection component of this utility model;

[0035] Figure 13 This is a schematic diagram of another embodiment of the dirt collection component of this utility model;

[0036] Figure 14 This is a schematic diagram of another embodiment of the dirt collection component of this utility model;

[0037] Figure 15 This is a schematic diagram of another embodiment of the dirt collection component of this utility model.

[0038] List of reference numerals in the attached diagram:

[0039] 1. Main water inlet; 11. Inlet valve; 12. Booster pump; 2. Reverse osmosis membrane filter element; 21. Wastewater pipe; 211. Wastewater valve; 300. Housing; 301. First chamber; 302. Second chamber; 303. Filter media; 31. Pre-filter element; 311. First pre-filter inlet; 3111. First pre-filter inlet pipe; 3112. First pre-filter inlet valve; 312. First pre-filter outlet; 3121. First... 3122. First pre-outlet water pipe; 313. Second pre-inlet water port; 3131. Second pre-inlet water pipe; 3132. Second pre-inlet water valve; 314. Second pre-outlet water port; 3141. Second pre-outlet water pipe; 3142. Second pre-outlet water valve; 32. Post-filter cartridge; 321. First post-inlet water port; 3211. First post-inlet water pipe; 3212. First post-inlet water valve; 322. 3221, First rear outlet; 3222, First rear outlet valve; 323, Second rear inlet; 3231, Second rear inlet pipe; 3232, Second rear inlet valve; 324, Second rear outlet; 3241, Second rear outlet pipe; 3242, Second rear outlet valve; 41, First reversing valve; 42, Second reversing valve; 43, Third reversing valve; 44, Fourth reversing valve; 5. Return pipe; 51. Return valve; 52. First check valve; 53. Water quality testing component; 6. Circulation pipe; 61. Cleaning valve; 62. Circulation pump; 63. Second check valve; 64. Dirt collection component; 641. Outer shell; 642. Filter screen; 643. First chamber; 644. Second chamber; 645. Inlet pipe; 646. Outlet pipe; 647. Drain outlet; 65. Flow control component; 7. Pure water outlet pipe. Detailed Implementation

[0040] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0041] It should be noted that in the description of this utility model, terms such as "upper," "lower," and "inner," which indicate direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] Please see Figures 1 to 8 , Figures 1 to 8 The diagram shows the water circuit connections for various embodiments of the water purifier.

[0044] like Figures 1 to 8 As shown, the water purifier of this utility model includes a reverse osmosis membrane filter element 2 and a filter element. The filter element includes a housing 300 and a filter material 303 disposed in the housing 300. The housing 300 has a first chamber 301 and a second chamber 302. A first cleaning agent is disposed in the first chamber 301 and a second cleaning agent is disposed in the second chamber 302. The filter material 303 is disposed in the first chamber 301 and / or the second chamber 302. The first and second cleaning agents in the filter element can be delivered to the reverse osmosis membrane filter element 2 after dissolving to clean the reverse osmosis membrane filter element 2.

[0045] By setting the first and second cleaning agents in the first and second chambers 301 of the filter element, the reverse osmosis membrane filter element 2 can be cleaned when replacing the filter element without the need for an external cleaning module. This simplifies the piping connection of the water purifier, reduces its cost, and removes different types of dirt from the reverse osmosis membrane filter element 2 through the use of two cleaning agents, thereby improving the cleaning effect and enhancing the user experience.

[0046] It should be noted that this utility model does not limit the specific type of the first and second cleaning agents. For example, one of the first and second cleaning agents can be set as an acidic cleaning agent, and the other can be set as an alkaline cleaning agent. Alternatively, one of the first and second cleaning agents can be set as an acidic or alkaline cleaning agent, and the other can be set as an oxidizing or reducing cleaning agent, etc. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model.

[0047] Preferably, one of the first and second cleaning agents is an acidic cleaning agent, and the other of the first and second cleaning agents is an alkaline cleaning agent.

[0048] It should be noted that, in practical applications, those skilled in the art can set the filter element as a pre-filter element 31, or as a post-filter element 32, or as a composite filter element, etc. Such adjustments and changes to the specific setting type of the filter element do not deviate from the principle and scope of this utility model and should all be included within the protection scope of this utility model.

[0049] The following two embodiments will be described in detail.

[0050] Example 1:

[0051] like Figures 1 to 4 As shown, the filter element is a pre-filter element 31. The housing 300 is provided with a first pre-filter inlet 311 and a first pre-filter outlet 312 communicating with the first chamber 301, and a second pre-filter inlet 313 and a second pre-filter outlet 314 communicating with the second chamber 302.

[0052] The first pre-inlet 311 and the second pre-inlet 313 can both be connected to a water source, and the first pre-outlet 312 and the second pre-outlet 314 can be selectively connected to the inlet end of the reverse osmosis membrane filter element 2.

[0053] With this setup, since the pre-filter 31 has a short service life, when the water purifier needs to replace the pre-filter 31, the old pre-filter 31 is removed and replaced with a new pre-filter 31. The first chamber 301 and the second chamber 302 of the new pre-filter 31 are respectively equipped with a first cleaning agent and a second cleaning agent, and the first cleaning agent and the second cleaning agent are used to clean the reverse osmosis membrane filter 2 respectively.

[0054] It should be noted that, in practical applications, this utility model does not impose any limitations on the specific connection method by which both the first front water inlet 311 and the second front water inlet 313 can be connected to the water source.

[0055] In one specific embodiment, such as Figure 1 , Figure 2 and Figure 4 As shown, the water purifier also includes a first pre-inlet pipe 3111 and a second pre-inlet pipe 3131. The first pre-inlet pipe 311 is connected to the water source through the first pre-inlet pipe 3111, and the second pre-inlet pipe 313 is connected to the water source through the second pre-inlet pipe 3131. A first pre-inlet valve 3112 and a second pre-inlet valve 3132 are respectively provided on the first pre-inlet pipe 3111 and the second pre-inlet pipe 3131.

[0056] In another embodiment, such as Figure 3As shown, the water purifier also includes a first reversing valve 41, a first pre-inlet pipe 3111, and a second pre-inlet pipe 3131. The first port of the first reversing valve 41 is connected to the water source, the second port of the first reversing valve 41 is connected to the first pre-inlet 311 through the first pre-inlet pipe 3111, and the third port of the first reversing valve 41 is connected to the second pre-inlet 313 through the second pre-inlet pipe 3131. The first port of the first reversing valve 41 can selectively connect to the second port or the third port.

[0057] It should be noted that in practical applications, the water source can be set as a water storage tank, or as a tap water pipe, or as any other possible form, etc. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0058] For example, the water source is a tap water pipe.

[0059] It should be noted that, in practical applications, this utility model does not impose any restrictions on the specific connection method in which the first pre-outlet 312 and the second pre-outlet 314 can be selectively connected to the inlet end of the reverse osmosis membrane filter element 2.

[0060] In one specific embodiment, such as Figure 1 , Figure 2 and Figure 4 As shown, the water purifier also includes a first pre-outlet pipe 3121 and a second pre-outlet pipe 3141. The first pre-outlet 312 is connected to the inlet of the reverse osmosis membrane filter element 2 through the first pre-outlet pipe 3121, and the second pre-outlet 314 is connected to the inlet of the reverse osmosis membrane filter element 2 through the second pre-outlet pipe 3141. The first pre-outlet pipe 3121 is equipped with a first pre-outlet valve 3122, and the second pre-outlet pipe 3141 is equipped with a second pre-outlet valve 3142.

[0061] In another specific embodiment, such as Figure 3 As shown, the water purifier also includes a second reversing valve 42, a first pre-outlet pipe 3121, and a second pre-outlet pipe 3141. The first port of the second reversing valve 42 is connected to the first pre-outlet 312 through the first pre-outlet pipe 3121, and the second port of the second reversing valve 42 is connected to the second pre-outlet 314 through the second pre-outlet pipe 3141. The third port of the second reversing valve 42 is connected to the inlet end of the reverse osmosis membrane filter element 2. The first port or the second port of the second reversing valve 42 can be selectively connected to the third port of the second reversing valve 42.

[0062] It should be noted that, in practical applications, those skilled in the art can place the filter media 303 in the first chamber 301, or in the second chamber 302, or simultaneously in both chambers 301 and 302. When the reverse osmosis membrane filter element is cleaned and the normal water production mode is restored, if the filter media 303 in one chamber reaches its service life, the filter media 303 in the other chamber can be switched to filter the water to extend the service life of the filter element. Such adjustments and changes to the specific placement of the filter media 303 in the first chamber 301 and the second chamber 302 do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0063] Preferably, the filter media 303 is disposed in the first chamber 301.

[0064] It should be noted that in practical applications, this utility model does not limit the specific type of filter material 303. For example, the filter material 303 can be set as PP cotton, or it can be set as PP cotton and carbon rod, etc. Such adjustments and changes to the specific type of filter material 303 do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0065] Preferably, the filter media includes PP cotton and carbon rods.

[0066] It should be noted that the first cleaning agent can be placed on the inner side of the filter material 303, or it can be placed on the outer side of the filter material 303, etc. Such adjustments and changes to the specific arrangement of the first cleaning agent and the filter material 303 in the first chamber do not deviate from the principle and scope of this utility model, and should all be included within the protection scope of this utility model.

[0067] Preferably, the first cleaning agent is disposed on the inner side of the filter media 303; more specifically, the first cleaning agent is disposed on the inner side of the carbon rod.

[0068] Preferably, such as Figures 1 to 4 As shown, the water purifier also includes a main water inlet 1, and the first pre-outlet pipe 3121 and the second pre-outlet pipe 3141 are both connected to the inlet end of the reverse osmosis membrane filter element 2 through the main water inlet 1. The booster pump 12 is installed on the main water inlet 1.

[0069] With this setup, when the water purifier is in normal water production mode, the water source enters the first chamber 301 and flows out from the first pre-outlet 312 after being filtered by the filter element. It is then pressurized by the booster pump 12 and enters the reverse osmosis membrane filter element 2, where it is filtered.

[0070] In some embodiments, such as Figures 1 to 4 As shown, the water purifier also includes a post-filter 32. The pure water end of the reverse osmosis membrane filter 2 is connected to the inlet end of the post-filter 32, and the outlet end of the post-filter 32 is connected to the pure water outlet pipe 7 so as to output pure water for users to use.

[0071] Preferably, such as Figures 1 to 4 As shown, the water purifier also includes a return pipe 5 and a return valve 51 installed on the return pipe 5. The first end of the return pipe 5 is connected to the pure water outlet pipe 7, and the second end of the return pipe 5 is connected to the inlet end of the reverse osmosis membrane filter element 2, so as to transport water with a higher TDS value at the pure water end of the reverse osmosis membrane filter element 2 to the inlet end of the reverse osmosis membrane filter element 2, thus solving the problem of high TDS value of the "first cup of water" caused by the water purifier not being used for a long time.

[0072] It should be noted that the connection is not limited to connecting the first end of the return pipe 5 to the pure water outlet pipe 7. For example, the first end of the return pipe 5 can be directly connected to the pure water end of the reverse osmosis membrane filter element 2. Alternatively, the first end of the return pipe 5 can be connected to the connecting pipe between the pure water end of the reverse osmosis membrane filter element 2 and the inlet end of the post-filter element 32. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0073] Example 2:

[0074] like Figures 2 to 8 As shown, the filter element is a post-filter element 32. The water purifier also includes a return pipe 5. The housing 300 is provided with a first post-inlet 321 and a first post-outlet 322 communicating with the first chamber 301, and a second post-inlet 323 and a second post-outlet 324 communicating with the second chamber 302.

[0075] The pure water end of the reverse osmosis membrane filter element 2 can be selectively connected to the first post-inlet 321 and the second post-inlet 323, the first post-outlet 322 and the second post-outlet 324 can be selectively connected to the first end of the return pipe 5, the second end of the return pipe 5 is connected to the inlet end of the reverse osmosis membrane filter element 2, and the liquid in the first chamber 301 or the second chamber 302 can be transported to the reverse osmosis membrane filter element 2 through the return pipe 5.

[0076] With this setup, since the lifespan of the post-filter 32 is shorter than that of the reverse osmosis membrane filter 2, when the post-filter 32 reaches the end of its lifespan, the old post-filter 32 is removed and replaced with a new one. The new post-filter 32 contains a first cleaning agent and a second cleaning agent. The reverse osmosis membrane filter 2 is used to produce water first. The pure water filtered by the reverse osmosis membrane filter 2 dissolves the first or second cleaning agent to form a cleaning solution. The cleaning solution is transported to the reverse osmosis membrane filter 2 through the return pipe 5 to clean the reverse osmosis membrane filter 2. There is no need to set up an external cleaning module, which simplifies the internal piping connection of the water purifier.

[0077] In some embodiments, a return valve 51 is also provided on the return pipe 5, which is used to control the opening and closing of the return pipe 5.

[0078] It should be noted that, in practical applications, this utility model does not impose any restrictions on the specific connection method in which the pure water end of the reverse osmosis membrane filter element 2 can be selectively connected to the first post-inlet 321 and the second post-inlet 323.

[0079] In one specific embodiment, such as Figure 5 , Figure 6 and Figure 8 As shown, the water purifier also includes a first post-inlet pipe 3211 and a second post-inlet pipe 3231. The pure water end of the reverse osmosis membrane filter element 2 is connected to the first post-inlet 321 through the first post-inlet pipe 3211. The pure water end of the reverse osmosis membrane filter element 2 is also connected to the second post-inlet 323 through the second post-inlet pipe 3231. A first post-inlet valve 3212 is provided on the first post-inlet pipe 3211, and a second post-inlet valve 3232 is provided on the second post-inlet pipe 3231.

[0080] In another specific embodiment, such as Figure 7 As shown, the water purifier also includes a third reversing valve 43, a first post-inlet pipe 3211, and a second post-inlet pipe 3231. The pure water end of the reverse osmosis membrane filter element 2 is connected to the first interface of the third reversing valve 43. The second interface of the third reversing valve 43 is connected to the first post-inlet 321 through the first post-inlet pipe 3211. The third interface of the third reversing valve 43 is connected to the second post-inlet 323 through the second post-inlet pipe 3231. The first interface of the third reversing valve 43 can selectively connect to either the second or third interface of the third reversing valve 43.

[0081] It should also be noted that, in practical applications, those skilled in the art do not impose any restrictions on the specific connection method by which the first post-outlet 322 and the second post-outlet 324 can be selectively connected to the first end of the return pipe 5.

[0082] In one specific embodiment, such as Figure 5 , Figure 6 and Figure 8 As shown, the water purifier also includes a first post-outlet pipe 3221 and a second post-outlet pipe 3241. The first post-outlet 322 is connected to the first end of the return pipe 5 through the first post-outlet pipe 3221, and the second post-outlet 324 is connected to the first end of the return pipe 5 through the second post-outlet pipe 3241. A first post-outlet valve 3222 and a second post-outlet valve 3242 are respectively provided on the first post-outlet pipe 3221 and the second post-outlet pipe 3241.

[0083] In another specific embodiment, such as Figure 7 As shown, the water purifier also includes a fourth reversing valve 44, a first post-outlet pipe 3221, and a second post-outlet pipe 3241. The first port of the fourth reversing valve 44 is connected to the first end of the return pipe 5. The first post-outlet 322 is connected to the second port of the fourth reversing valve 44 through the first post-outlet pipe 3221. The second post-outlet 324 is connected to the third port of the fourth reversing valve 44 through the second post-outlet pipe 3241. The first port of the fourth reversing valve 44 can selectively connect to either the second or third port of the fourth reversing valve 44.

[0084] It should be noted that, in practical applications, those skilled in the art can place the filter material 303 in the first chamber 301, or in the second chamber 302, or in both the first chamber 301 and the second chamber 302, etc. Such flexible adjustments and changes do not deviate from the principles and scope of this utility model and should all be included within the protection scope of this utility model.

[0085] Preferably, the filter media 303 is disposed in the first chamber 301, and the water purifier also includes a pure water outlet pipe 7, and the first post-outlet pipe 3221 is also connected to the pure water outlet pipe 7.

[0086] With this setup, when the water purifier is in normal water production mode, the pure water filtered by the reverse osmosis membrane filter 2 can enter the first chamber 301, be filtered by the filter material 303 in the post-filter 32, and then flow through the first post-outlet pipe 3221 to the pure water outlet pipe 7 for users to use.

[0087] Preferably, such as Figures 5 to 8As shown, the booster pump 12 of the water purifier is located at the upstream end of the reverse osmosis membrane filter element 2. The booster pump 12 has a water production working mode. When the booster pump 12 is in the water production working mode, it can pressurize the water flowing into the reverse osmosis membrane filter element 2 so that the reverse osmosis membrane filter element 2 can filter the water to produce pure water. The water purifier also includes a water quality detection component 53 installed on the return pipe 5. The water quality detection component 53 is used to detect the water quality information in the return pipe 5. The water quality detection component 53 is communicatively connected to the booster pump 12 so that the booster pump 12 can be selectively shut down from the water production working mode according to the detection data of the water quality detection component 53.

[0088] With this setup, when cleaning the reverse osmosis membrane filter element 2, the reverse osmosis membrane filter element 2 needs to produce water first. The pure water filtered by the reverse osmosis membrane filter element 2 flows into the first chamber 301 (or the second chamber 302), dissolves the first cleaning agent (or the second cleaning agent), and delivers it to the reverse osmosis membrane filter element 2 through the return pipe 5. By setting a water quality detection component 53 on the return pipe 5, when the reverse osmosis membrane filter element 2 needs to be cleaned, the water quality detection component 53 on the return pipe 5 can determine whether the first cleaning agent in the first chamber 301 (or the second cleaning agent in the second chamber 302) has been completely delivered to the reverse osmosis membrane filter element 2. When the cleaning agent has been completely delivered to the reverse osmosis membrane filter element 2, a signal is transmitted to the booster pump 12, causing the booster pump 12 to exit the water production mode and the reverse osmosis membrane filter element 2 to stop producing water. This not only saves energy but also shortens the cleaning time.

[0089] It should be noted that, in practical applications, those skilled in the art do not impose any limitations on the specific configuration type of the water quality detection component 53. For example, the water quality detection component 53 can be configured as a TDS sensor, or as a conductivity meter, or even as a pH sensor (since the first and second cleaning agents are usually acidic or alkaline cleaning agents, the pH value of the liquid in the return pipe 5 can be used to determine whether all the cleaning agent has been delivered to the reverse osmosis membrane filter element 2), etc. Such adjustments and changes to the specific configuration type of the water quality detection component 53 do not deviate from the principle and scope of this utility model and should all be included within the protection scope of this utility model.

[0090] Preferably, the water quality detection component 53 is a TDS sensor.

[0091] Preferably, such as Figures 5 to 8 As shown, the water purifier in this embodiment also includes a main water inlet 1, which is connected to the water inlet end of the reverse osmosis membrane filter element 2. A booster pump 12 is installed on the main water inlet 1, and the second end of the return pipe 5 is connected to the main water inlet 1. An inlet valve 11 is installed on the main water inlet 1, which is used to control the opening and closing of the main water inlet 1.

[0092] In some embodiments, such as Figures 5 to 8 As shown, a first check valve 52 is also provided on the return pipe 5. The first check valve 52 is used to prevent water in the main water inlet 1 from flowing back into the return pipe 5.

[0093] It should be noted that when the reverse osmosis membrane filter element 2 is not used for a long time, the TDS value of the pure water end of the reverse osmosis membrane filter element 2 will increase. The problem of high TDS value of the pure water end of the reverse osmosis membrane filter element 2 can be solved by the return pipe 5 to achieve pure water return.

[0094] Preferably, such as Figures 5 to 8 As shown, the water purifier in this embodiment also includes a pre-filter 31. The inlet end of the pre-filter 31 is connected to the water source, and the outlet end of the pre-filter 31 is connected to the inlet end of the reverse osmosis membrane filter 2 through the main water inlet channel 1.

[0095] It should be noted that although the present invention is described using the above two embodiments as examples, it is not restrictive. For example, the first cleaning agent and the second cleaning agent can both be placed in the front and rear composite filter elements, etc. Any other possible forms do not deviate from the principle and scope of the present invention and should be included within the protection scope of the present invention.

[0096] It should be noted that, in practical applications, those skilled in the art do not impose any limitations on the specific locations of the first chamber 301 and the second chamber 302.

[0097] The following example, using Embodiment 1, details the specific arrangement of the first and second chambers within the filter element.

[0098] Specifically, see next. Figures 9 to 11 , Figures 9 to 11 A longitudinal sectional view of various embodiments of the filter element is shown.

[0099] In one specific embodiment, such as Figure 9 As shown, the first chamber 301 and the second chamber 302 are arranged to be distributed sequentially along the vertical direction.

[0100] In another specific embodiment, such as Figure 10 As shown, the first chamber 301 and the second chamber 302 are arranged to be distributed sequentially along the horizontal direction.

[0101] In another possible embodiment, such as Figure 11 As shown, the first chamber 301 and the second chamber 302 are arranged in a sequence from the inside to the outside.

[0102] It should be noted that although this utility model uses Embodiment 1 as an example and combines it with the pre-filter to introduce the specific arrangement of the first chamber and the second chamber in the filter element, this is not limiting. The specific arrangement of the first chamber and the second chamber in the filter element is also applicable to the post-filter in Embodiment 2.

[0103] It should be noted that when cleaning the reverse osmosis membrane filter element 2, it can be cleaned by soaking the reverse osmosis membrane filter element 2 in a cleaning solution, or by circulating the cleaning solution in the cleaning circuit. Alternatively, it can be cleaned by combining soaking the reverse osmosis membrane filter element 2 in a cleaning agent with circulating the cleaning solution in the cleaning circuit, etc. Such adjustments and changes to the cleaning methods of the first and second cleaning agents for cleaning the reverse osmosis membrane filter element 2 do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0104] Preferably, such as Figures 2 to 4 , Figures 6 to 8 As shown, the water purifier also includes a circulation pipe 6. The first end of the circulation pipe 6 is connected to the wastewater end of the reverse osmosis membrane filter element 2, and the second end is connected to the inlet end of the reverse osmosis membrane filter element 2, so that the inlet end and the wastewater end of the reverse osmosis membrane filter element 2 are connected in sequence to form a cleaning circuit. The water purifier is configured to drive the liquid circulation flow in the cleaning circuit.

[0105] By setting up the circulation pipe 6, the cleaning solution can circulate within the cleaning circuit, thereby circulating and flushing the reverse osmosis membrane filter element 2, more effectively cleaning off the dirt on the reverse osmosis membrane filter element 2, and improving the cleaning effect of the reverse osmosis membrane filter element 2.

[0106] In some embodiments, such as Figures 2 to 4 , Figures 6 to 8 As shown, a cleaning valve 61 and a second check valve 63 are also provided on the circulation pipe 6. The second check valve 63 is used to prevent water in the main water inlet 1 from flowing back into the circulation pipe 6.

[0107] It should be noted that, in practical applications, those skilled in the art do not impose any restrictions on the specific driving method for driving the liquid circulation within the cleaning circuit, as long as it can drive the cleaning fluid circulation within the cleaning circuit.

[0108] The following two scenarios will be discussed in detail.

[0109] Scenario 1:

[0110] like Figures 2 to 3 , Figures 6 to 7As shown, the second end of the circulation pipe 6 is connected to the upstream end of the booster pump 12, which can drive the liquid circulation flow in the cleaning circuit.

[0111] With this setup, the booster pump 12 of the water purifier can drive the liquid circulation in the cleaning circuit without the need for an additional pump body, further reducing the cost and size of the water purifier.

[0112] It should be noted that, in practical applications, those skilled in the art can configure the booster pump 12 to have only one working position, in which the booster pump 12 can both produce water and drive the liquid circulation in the cleaning circuit. Alternatively, the booster pump 12 can be configured to include at least a first working position and a second working position, wherein the working pressure value (and / or flow rate) of the second working position is lower than the working pressure value (and / or flow rate) of the first working position. In the first working position, the booster pump 12 pressurizes the inlet of the reverse osmosis membrane filter element 2 to produce water, and in the second working position, the booster pump 12 drives the liquid circulation in the cleaning circuit, etc. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0113] Preferably, the booster pump 12 includes at least a first working level and a second working level. The booster pump 12 has a water production working mode and a circulation working mode. The booster pump 12 has a level adjustment module, which is used to adjust the working level of the booster pump 12 to the first working level when the water purifier is in the water production working mode and to adjust the working level of the booster pump 12 to the second working level when the water purifier is in the circulation working mode. The working pressure value and / or flow rate of the second working level is lower than the working pressure value and / or flow rate of the first working level.

[0114] With this setting, when the water purifier is in circulation mode, the booster pump 12 can operate at a lower working pressure or a lower flow rate, so that the water pressure of the cleaning solution is lower during circulation. On the one hand, this can prevent the cleaning solution from seeping into the pure water end of the reverse osmosis membrane filter element 2, reducing chemical residues. On the other hand, it can also prevent the cleaning solution from damaging the diaphragm inside the booster pump 12.

[0115] It should be noted that the working pressure value of the second working level can be set lower than that of the first working level, or the flow rate of the second working level can be set lower than that of the first working level, or the working pressure value of the second working level can be set lower than that of the first working level, and the flow rate of the second working level can be set lower than that of the first working level, etc. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model, and should all be included within the protection scope of this utility model.

[0116] It should be noted that the booster pump 12 can be configured to include a first working position and a second working position, or it can be configured to include more working positions, etc. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0117] It should also be noted that the gear adjustment module can be installed on the outer casing 641 of the water purifier. When the water purifier is in cleaning mode, the user can adjust the gear of the booster pump 12 by operating the gear adjustment module. Alternatively, the gear adjustment module can be connected to the controller of the water purifier to realize the automatic adjustment of the voltage level of the booster pump 12, etc. Such flexible adjustment and change do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0118] For example, the speed adjustment module is connected to the controller of the water purifier to realize the automatic adjustment of the voltage speed of the booster pump 12.

[0119] Scenario 2:

[0120] like Figure 4 and Figure 8 As shown, the water purifier also includes a circulation pump 62, which is installed on the cleaning circuit and is used to drive the liquid circulation flow in the cleaning circuit.

[0121] With this setup, the use of booster pump 12 for driving can be avoided, thereby preventing damage to the diaphragm inside booster pump 12 in the cleaning solution and extending the service life of booster pump 12. In addition, using circulation pump 62 to drive the liquid circulation in the cleaning circuit can achieve low water pressure to drive the cleaning solution circulation, which can reduce the amount of cleaning agent that permeates to the pure water end of reverse osmosis membrane filter element 2, thereby reducing the residue of cleaning agent in reverse osmosis membrane filter element 2.

[0122] It should be noted that when the circulating pump 62 drives the cleaning fluid to circulate in the cleaning circuit, the booster pump 12 is in the circulation working mode. At this time, the working pressure value and / or flow rate of the second working position is, that is, the booster pump 12 is in the closed state.

[0123] In some embodiments, such as Figures 2 to 4 Figure 6 to Figure 8 As shown, the water purifier of this utility model also includes a dirt collection component 64, which is disposed on the cleaning circuit and can collect impurities in the cleaning circuit.

[0124] By setting up the dirt collection component 64, when the cleaning liquid circulates in the cleaning circuit, it can intercept the dirt washed off in the cleaning liquid, preventing the dirt from re-entering the reverse osmosis membrane filter element 2 with the cleaning liquid, thereby preventing the dirt from causing secondary pollution to the reverse osmosis membrane filter element 2 and further improving the cleaning effect of the reverse osmosis membrane filter element 2.

[0125] It should be noted that, in practical applications, those skilled in the art do not impose any limitations on the specific location of the dirt collection component 64 in the cleaning circuit. For example, the dirt collection component 64 can be set on the circulation pipe 6, or it can be set on the main water inlet 1, etc. Such adjustments and changes to the specific location of the dirt collection component 64 in the cleaning circuit do not deviate from the principle and scope of this utility model and should be included within the protection scope of this utility model.

[0126] Preferably, such as Figures 2 to 4 , Figures 6 to 8 As shown, the dirt collection component 64 is disposed on the circulation pipe 6 and located upstream of the cleaning valve 61.

[0127] With this setup, the dirt collection component 64 is placed on the circulation pipe 6, which allows the dirt in the cleaning liquid flowing out of the wastewater end of the reverse osmosis membrane filter element 2 to be intercepted as soon as possible, while also preventing the dirt from entering the main water inlet 1.

[0128] See next Figures 12 to 15 , Figures 12 to 15 The diagram shown is a cross-sectional view of different embodiments of the dirt collection component 64.

[0129] Preferably, such as Figures 12 to 15 As shown, the dirt collection component 64 includes a housing 641 and a filter screen 642 disposed inside the housing 641. The dirt collection component 64 has an inlet pipe 645 and an outlet pipe 646. The filter screen 642 divides the space inside the housing 641 into a first cavity 643 and a second cavity 644. The first cavity 643 is connected to the inlet, and the second cavity 644 is connected to the outlet. The filter screen 642 intercepts impurities in the cleaning fluid in the first cavity 643.

[0130] It should be noted that, in practical applications, those skilled in the art do not impose any restrictions on the specific type of the dirt collection component 64, as long as it can intercept the dirt in the cleaning fluid.

[0131] In one specific embodiment, such as Figure 12 As shown, the filter surface of filter 642 is set to be perpendicular to the horizontal direction.

[0132] In another specific embodiment, such as Figure 13 and Figure 14 As shown, the filter surface of filter 642 is set to be parallel to the horizontal direction.

[0133] In another possible embodiment, such as Figure 15 As shown, the filter surface of filter screen 642 is set at a predetermined angle with the horizontal direction.

[0134] Preferably, such as Figures 12 to 15 As shown, the dirt collection component 64 of this utility model is also provided with a drain port 647, wherein the drain port 647 is used to discharge the collected impurities.

[0135] Specifically, such as Figures 12 to 15 As shown, the drain port 647 is connected to the first cavity 643. The dirt collection component 64 also includes a drain valve, which is located at the drain port 647 and can open or close the drain port 647. For example, the drain valve can be pivotally connected to the outer casing 641, or it can be slidably connected to the outer casing 641, or it can be detachably connected to the outer casing 641, etc. Such adjustments and changes to the specific connection method between the drain valve and the outer casing 641 do not deviate from the protection scope of this utility model.

[0136] Preferably, such as Figures 2 to 4 , Figures 6 to 8 As shown, the water purifier of this utility model also includes a flow control component 65, which is disposed on the cleaning circuit and is used to regulate the amount of water flowing from the wastewater end of the reverse osmosis membrane filter element 2 to the water inlet end of the reverse osmosis membrane filter element 2.

[0137] When the water purifier is in normal water production mode, it can also achieve wastewater return through the circulation pipe 6, which helps to reduce water waste. By setting the flow control component 65, the return flow from the wastewater end of the reverse osmosis membrane filter element 2 to the water inlet end of the reverse osmosis membrane filter element 2 can be adjusted. On the one hand, it can avoid the problem of water waste caused by insufficient return flow, and on the other hand, it can also avoid affecting the service life of the reverse osmosis membrane filter element 2 due to excessive return flow.

[0138] It should be noted that when cleaning the reverse osmosis membrane filter element 2, the first cleaning agent can be used to clean the reverse osmosis membrane filter element 2 first, and then the second cleaning agent can be used to clean the reverse osmosis membrane filter element 2. Alternatively, the second cleaning agent can be used to clean the reverse osmosis membrane filter element 2 first, and then the first cleaning agent can be used to clean the reverse osmosis membrane filter element 2, and so on. Such flexible adjustments and changes do not deviate from the principle and scope of this utility model, and should all be included within the protection scope of this utility model.

[0139] For example, the reverse osmosis membrane filter element 2 is first cleaned with a first cleaning agent, and then the reverse osmosis membrane filter element 2 is cleaned with a second cleaning agent.

[0140] Preferably, such as Figures 1 to 8 As shown, the water purifier of this utility model also includes a wastewater pipe 21 and a wastewater valve 211 installed on the wastewater pipe 21. The wastewater pipe 21 is connected to the wastewater end of the reverse osmosis membrane filter element 2.

[0141] When the reverse osmosis membrane filter element 2 is in normal water production mode, the wastewater produced by the reverse osmosis membrane filter element 2 flows out through the wastewater pipe 21. When the reverse osmosis membrane filter element 2 is cleaned, the cleaning wastewater after cleaning flows out through the wastewater pipe 21.

[0142] The specific working process of the water purifier will be described in detail below with reference to Example 1.

[0143] Scenario 1:

[0144] When the water purifier is in normal water production mode: the booster pump 12 is in water production mode, connecting the water source to the first pre-filter inlet 311 and the first pre-filter outlet 312 to the reverse osmosis membrane filter element 2. The water source flows into the pre-filter element 31, and the water filtered in the pre-filter element 31 enters the reverse osmosis membrane filter element 2 under the action of the booster pump 12. The pure water filtered by the reverse osmosis membrane filter element 2 enters the post-filter element 32, and after being filtered by the filter media 303 in the post-filter element 32, the water is output through the water outlet component for the user to use.

[0145] Scenario 2:

[0146] The water purifier is in the first cleaning agent cleaning mode: the water source is connected to the first pre-filter inlet 311 and the first pre-filter outlet 312 is connected to the inlet of the reverse osmosis membrane filter element 2. The water source enters the first chamber 301 through the first pre-filter inlet 311. The water filtered by the filter material 303 in the first chamber 301 dissolves the first cleaning agent to form the first cleaning liquid. The first cleaning liquid enters the reverse osmosis membrane filter element 2 through the first pre-filter outlet 312. Then, the booster pump 12 (or circulation pump 62) drives the first cleaning liquid to circulate in the cleaning circuit, so that the first cleaning agent cleans the dirt on the reverse osmosis membrane filter element 2. The cleaned dirt is intercepted by the dirt collection component 64 to prevent the dirt from causing secondary pollution to the reverse osmosis membrane filter element 2. After cleaning is completed, the cleaning wastewater is discharged through the wastewater pipe 21.

[0147] Scenario 3:

[0148] The water purifier is in the second cleaning agent cleaning mode: the water source is connected to the second pre-filter inlet 313 and the second pre-filter outlet 314 is connected to the inlet of the reverse osmosis membrane filter element 2. The water source enters the second chamber 302 through the second pre-filter inlet 313 and dissolves the second cleaning agent to form the second cleaning liquid. The second cleaning liquid enters the reverse osmosis membrane filter element 2 through the second pre-filter outlet 314. Then, the booster pump 12 (or circulation pump 62) drives the second cleaning liquid to circulate in the cleaning circuit, so that the second cleaning agent cleans the dirt on the reverse osmosis membrane filter element 2. The cleaned dirt is intercepted by the dirt collection component 64 to prevent the dirt from causing secondary pollution to the reverse osmosis membrane filter element 2. After cleaning is completed, the cleaning wastewater is discharged through the wastewater pipe 21.

[0149] The specific working process of the water purifier will be described in detail below with reference to Example 2.

[0150] Scenario 1:

[0151] When the water purifier is in normal water production mode: the booster pump 12 is in water production mode, water flows into the pre-filter 31, and the water filtered in the pre-filter 31 enters the reverse osmosis membrane filter 2 under the action of the booster pump 12. The pure water filtered by the reverse osmosis membrane filter 2 enters the first chamber 301 of the post-filter 32, and after being filtered by the filter media 303 in the post-filter 32, the water is output through the water outlet component for the user to use.

[0152] Scenario 2:

[0153] The water purifier is in the first cleaning agent cleaning mode: the pure water end of the reverse osmosis membrane filter 2 is connected to the first post-inlet 321 and the first post-outlet 322 is connected to the first end of the return pipe 5. The booster pump 12 is switched to the first operating position, and water flows into the pre-filter 31. The water filtered by the pre-filter 31 enters the reverse osmosis membrane filter 2 under the action of the booster pump 12. The pure water filtered by the reverse osmosis membrane filter 2 enters the first chamber 301 through the first post-inlet 321, dissolving the first cleaning agent in the first chamber 301 to form the first cleaning liquid. The first cleaning liquid flows through the first post-outlet 322. The first cleaning solution flows into the return pipe 5 and is delivered to the reverse osmosis membrane filter element 2. When the value detected by the water quality detection component 53 reaches the preset value, the signal is transmitted to the booster pump 12. The booster pump 12 switches to the second working position, so that the reverse osmosis membrane filter element 2 stops producing water. Then, the booster pump 12 (or circulation pump 62) drives the first cleaning solution to circulate in the cleaning circuit, so that the first cleaning agent cleans the dirt on the reverse osmosis membrane filter element 2. The cleaned dirt is intercepted by the dirt collection component 64 to prevent the dirt from causing secondary pollution to the reverse osmosis membrane filter element 2. After cleaning is completed, the cleaning wastewater is discharged through the wastewater pipe 21.

[0154] Scenario 3:

[0155] The water purifier is in the second cleaning agent cleaning mode: the pure water end of the reverse osmosis membrane filter 2 is connected to the second post-inlet 323 and the second post-outlet 324 is connected to the first end of the return pipe 5. First, the booster pump 12 is switched to the first working position, and water flows into the pre-filter 31. The water filtered in the pre-filter 31 enters the reverse osmosis membrane filter 2 under the action of the booster pump 12. The pure water filtered by the reverse osmosis membrane filter 2 enters the second chamber 302 through the second post-inlet 323, dissolving the second cleaning agent in the second chamber 302 to form the second cleaning liquid. The second cleaning liquid exits through the second post-outlet 324. The second cleaning solution flows into the return pipe 5 and is delivered to the reverse osmosis membrane filter element 2. When the value detected by the water quality detection component 53 reaches the preset value, the signal is transmitted to the booster pump 12. The booster pump 12 switches to the second working position, so that the reverse osmosis membrane filter element 2 stops producing water. Then, the booster pump 12 (or circulation pump 62) drives the second cleaning solution to circulate in the cleaning circuit, so that the second cleaning agent cleans the dirt on the reverse osmosis membrane filter element 2. The cleaned dirt is intercepted by the dirt collection component 64 to prevent the dirt from causing secondary pollution to the reverse osmosis membrane filter element 2. After cleaning is completed, the cleaning wastewater is discharged through the wastewater pipe 21.

[0156] It should be noted that this utility model does not impose any limitation on the cleaning order of the first cleaning agent and the second cleaning agent on the reverse osmosis membrane filter element 2. For example, the first cleaning agent can be used to clean the reverse osmosis membrane filter element 2 first, and then the second cleaning agent can be used to clean the reverse osmosis membrane filter element 2. Alternatively, the second cleaning agent can be used to clean the reverse osmosis membrane filter element 2 first, and then the first cleaning agent can be used to clean the reverse osmosis membrane filter element 2.

[0157] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A water purifier, characterized in that, The water purifier includes: Reverse osmosis membrane filter element (2); and A filter element includes a housing (300) and filter media (303) disposed within the housing (300). The housing (300) has a first chamber (301) and a second chamber (302). A first cleaning agent is disposed in the first chamber (301), and a second cleaning agent is disposed in the second chamber (302). The filter media (303) is disposed within the first chamber (301) and / or the second chamber (302). The first and second cleaning agents in the filter element are dissolved and then transported to the reverse osmosis membrane filter element (2) to clean the reverse osmosis membrane filter element (2).

2. The water purifier according to claim 1, characterized in that, The filter element is a pre-filter (31). The housing (300) is provided with a first pre-filter inlet (311) and a first pre-filter outlet (312) communicating with the first chamber (301), and a second pre-filter inlet (313) and a second pre-filter outlet (314) communicating with the second chamber (302). The first pre-inlet (311) and the second pre-inlet (313) can both be connected to a water source, and the first pre-outlet (312) and the second pre-outlet (314) can be selectively connected to the inlet end of the reverse osmosis membrane filter element (2).

3. The water purifier according to claim 2, characterized in that, The water purifier also includes a first pre-inlet pipe (3111) and a second pre-inlet pipe (3131). The first pre-inlet pipe (311) is connected to a water source through the first pre-inlet pipe (3111), and the second pre-inlet pipe (313) is connected to a water source through the second pre-inlet pipe (3131). A first pre-inlet valve (3112) and a second pre-inlet valve (3132) are respectively provided on the first pre-inlet pipe (3111) and the second pre-inlet pipe (3131). Alternatively, the water purifier may further include a first reversing valve (41), a first pre-inlet pipe (3111), and a second pre-inlet pipe (3131). The first port of the first reversing valve (41) is connected to the water source. The second port of the first reversing valve (41) is connected to the first pre-inlet (311) through the first pre-inlet pipe (3111). The third port of the first reversing valve (41) is connected to the second pre-inlet (313) through the second pre-inlet pipe (3131). The first port of the first reversing valve (41) can selectively connect to the second port or the third port of the first reversing valve (41).

4. The water purifier according to claim 2, characterized in that, The water purifier also includes a first pre-outlet pipe (3121) and a second pre-outlet pipe (3141). The first pre-outlet (312) is connected to the inlet of the reverse osmosis membrane filter element (2) through the first pre-outlet pipe (3121), and the second pre-outlet (314) is connected to the inlet of the reverse osmosis membrane filter element (2) through the second pre-outlet pipe (3141). The first pre-outlet pipe (3121) is provided with a first pre-outlet valve (3122), and the second pre-outlet pipe (3141) is provided with a second pre-outlet valve (3142). Alternatively, the water purifier may further include a second reversing valve (42), a first pre-outlet pipe (3121), and a second pre-outlet pipe (3141). The first port of the second reversing valve (42) is connected to the first pre-outlet (312) through the first pre-outlet pipe (3121), the second port of the second reversing valve (42) is connected to the second pre-outlet (314) through the second pre-outlet pipe (3141), and the third port of the second reversing valve (42) is connected to the inlet end of the reverse osmosis membrane filter (2). The first port or the second port of the second reversing valve (42) may be selectively connected to the third port of the second reversing valve (42).

5. The water purifier according to claim 1, characterized in that, The filter element is a post-filter (32), and the water purifier also includes a return pipe (5). The housing (300) is provided with a first post-inlet (321) and a first post-outlet (322) communicating with the first chamber (301), and a second post-inlet (323) and a second post-outlet (324) communicating with the second chamber (302). The pure water end of the reverse osmosis membrane filter element (2) can be selectively connected to the first post-inlet (321) and the second post-inlet (323), the first post-outlet (322) and the second post-outlet (324) can be selectively connected to the first end of the return pipe (5), the second end of the return pipe (5) is connected to the inlet end of the reverse osmosis membrane filter element (2), and the liquid in the first chamber (301) or the second chamber (302) can be transported to the reverse osmosis membrane filter element (2) through the return pipe (5).

6. The water purifier according to claim 5, characterized in that, The water purifier also includes a first post-inlet pipe (3211) and a second post-inlet pipe (3231). The pure water end of the reverse osmosis membrane filter element (2) is connected to the first post-inlet port (321) through the first post-inlet pipe (3211). The pure water end of the reverse osmosis membrane filter element (2) is also connected to the second post-inlet port (323) through the second post-inlet pipe (3231). A first post-inlet valve (3212) is provided on the first post-inlet pipe (3211), and a second post-inlet valve (3232) is provided on the second post-inlet pipe (3231). Alternatively, the water purifier may also include a third reversing valve (43), a first post-inlet pipe (3211), and a second post-inlet pipe (3231). The pure water end of the reverse osmosis membrane filter (2) is connected to the first interface of the third reversing valve (43). The second interface of the third reversing valve (43) is connected to the first post-inlet (321) through the first post-inlet pipe (3211). The third interface of the third reversing valve (43) is connected to the second post-inlet (323) through the second post-inlet pipe (3231). The first interface of the third reversing valve (43) can selectively connect to the second interface or the third interface of the third reversing valve (43).

7. The water purifier according to claim 5, characterized in that, The water purifier also includes a first post-outlet pipe (3221) and a second post-outlet pipe (3241). The first post-outlet (322) is connected to the first end of the return pipe (5) through the first post-outlet pipe (3221). The second post-outlet (324) is connected to the first end of the return pipe (5) through the second post-outlet pipe (3241). The first post-outlet pipe (3221) and the second post-outlet pipe (3241) are respectively provided with a first post-outlet valve (3222) and a second post-outlet valve (3242). Alternatively, the water purifier may further include a fourth reversing valve (44), a first post-outlet pipe (3221), and a second post-outlet pipe (3241). The first port of the fourth reversing valve (44) is connected to the first end of the return pipe (5). The first post-outlet (322) is connected to the second port of the fourth reversing valve (44) through the first post-outlet pipe (3221). The second post-outlet (324) is connected to the third port of the fourth reversing valve (44) through the second post-outlet pipe (3241). The first port of the fourth reversing valve (44) can selectively connect to either the second or third port of the fourth reversing valve (44).

8. The water purifier according to claim 5, characterized in that, The booster pump (12) of the water purifier is located at the upstream end of the reverse osmosis membrane filter element (2). The booster pump (12) has a water production working mode. When the booster pump (12) is in the water production working mode, it can pressurize the water flowing into the reverse osmosis membrane filter element (2). The water purifier also includes a water quality detection component (53) installed on the return pipe (5). The water quality detection component (53) is used to detect the water quality information in the return pipe (5). The water quality detection component (53) is communicatively connected to the booster pump (12) so that the booster pump (12) can be selectively shut off from the water purification mode based on the detection data of the water quality detection component (53).

9. The water purifier according to any one of claims 1 to 8, characterized in that, The water purifier also includes a circulation pipe (6), the first end of which is connected to the wastewater end of the reverse osmosis membrane filter element (2), and the second end of which is connected to the inlet end of the reverse osmosis membrane filter element (2), so that the inlet end and the wastewater end of the reverse osmosis membrane filter element (2) are connected in sequence to form a cleaning circuit, wherein: The booster pump (12) of the water purifier is located at the upstream end of the reverse osmosis membrane filter element (2), and the second end of the circulation pipe (6) is connected to the upstream end of the booster pump (12). The booster pump (12) can drive the liquid circulation flow in the cleaning circuit. Alternatively, the water purifier may further include a circulation pump (62) disposed on the cleaning circuit and used to drive the liquid circulation flow within the cleaning circuit.

10. The water purifier according to claim 9, characterized in that, The booster pump (12) includes at least a first working level and a second working level. The booster pump (12) has a water production working mode and a circulation working mode. The booster pump (12) also has a level adjustment module. The level adjustment module is configured to adjust the working level of the booster pump (12) to the first working level when the booster pump (12) is in the water production working mode, and to adjust the working level of the booster pump (12) to the second working level when the booster pump (12) is in the circulation working mode. Wherein, the working pressure value and / or flow rate of the second working gear is lower than the working pressure value and / or flow rate of the first working gear; And / or, the water purifier further includes a dirt collection component (64), which is disposed on the cleaning circuit and is capable of collecting impurities in the cleaning circuit; And / or, the water purifier further includes a flow control component (65) disposed on the cleaning circuit and used to regulate the amount of water flowing from the wastewater end of the reverse osmosis membrane filter element (2) to the inlet end of the reverse osmosis membrane filter element (2).

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