Self-cleaning water purifier

Abstract

The utility model relates to the field of water purification equipment, particularly provides a self-cleaning water purifier, and aims to solve the problem that the existing self-cleaning water purifier has a poor cleaning effect on a reverse osmosis membrane filter element. The utility model provides a self-cleaning water purifier which comprises a reverse osmosis membrane filter element, a cleaning assembly, a circulating pipeline and a heating component, and the cleaning assembly is arranged to be capable of dissolving or diluting a cleaning agent so as to form cleaning liquid in a cleaning agent storage component; the circulating pipeline, the cleaning assembly, the water inlet end of the reverse osmosis membrane filter element and the wastewater end of the reverse osmosis membrane filter element are sequentially communicated to form a cleaning loop; the heating component is used for heating the cleaning liquid in the cleaning loop; wherein the self-cleaning water purifier is set to enable the cleaning liquid to circularly flow in the cleaning loop. By arranging the heating component, the decontamination ability of the cleaning liquid can be improved, the dissolving speed and solubility of the cleaning agent can be improved, the cleaning effect can be more effectively improved by enabling the cleaning liquid to circularly flow in the cleaning loop, and the use experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water purification equipment field, specifically provide a kind of self-cleaning water purifier. BACKGROUND

[0002] Water purification equipment in people's daily life in the long-term use process, the dirt or other impurities in water is attached in reverse osmosis membrane filter core, affect the water filtration rate of water purification equipment, make the service life of reverse osmosis membrane filter core decline. And use the reverse osmosis membrane filter core that a large amount of dirt is attached to filter water, the quality of pure water obtained by filtration can decline. Therefore, the reverse osmosis membrane filter core is cleaned by cleaning agent in the prior art.

[0003] In the prior art, when the reverse osmosis membrane filter core is cleaned, the reverse osmosis membrane filter core is usually soaked for a fixed cleaning time, so as to clean the reverse osmosis membrane filter core. However, the inventors have found that the cleaning effect of the cleaning liquid on the reverse osmosis membrane filter core is poor at a low temperature. On the one hand, at a low temperature, the dirt dissolving speed of the reverse osmosis membrane filter core is slow, so that the cleaning liquid cannot completely clean the reverse osmosis membrane filter core when the reverse osmosis membrane filter core is cleaned, or the cleaning time is long, which causes waste of resources. On the other hand, the dissolving speed and solubility of the cleaning agent at a low temperature are not very high, so that the concentration of the cleaning liquid is low, which affects the cleaning effect on the reverse osmosis membrane filter core and makes the user experience poor. In addition, the cleaning liquid enters the reverse osmosis membrane filter core through the cleaning pipeline and cleans the reverse osmosis membrane filter core by immersion, which cannot completely clean the dirt on the reverse osmosis membrane filter core and also causes poor cleaning effect. SUMMARY

[0004] The utility model aims at solving the above technical problem, that is, solving the problem of poor cleaning effect of the existing self-cleaning water purifier when cleaning the reverse osmosis membrane filter core.

[0005] In a first aspect, the utility model provides a self-cleaning water purifier, which comprises a reverse osmosis membrane filter core, a cleaning assembly having a cleaning agent storage member for storing a cleaning agent, the cleaning assembly being arranged to dissolve or dilute the cleaning agent to form a cleaning liquid in the cleaning agent storage member, the cleaning agent storage member being in communication with a water inlet end of the reverse osmosis membrane filter core to deliver the cleaning liquid to the reverse osmosis membrane filter core, a circulation pipeline having a first end in communication with a wastewater end of the reverse osmosis membrane filter core and a second end in communication with the cleaning assembly, so that the cleaning assembly, the water inlet end of the reverse osmosis membrane filter core and the wastewater end of the reverse osmosis membrane filter core are sequentially communicated to form a cleaning loop, and a heating member for heating the cleaning liquid in the cleaning loop. The self-cleaning water purifier is arranged to circulate the cleaning liquid in the cleaning loop.

[0006] In the preferred technical scheme of the self-cleaning water purifier, the self-cleaning water purifier further comprises a water inlet main path, the water inlet main path is communicated with a water inlet end of the reverse osmosis membrane filter core, the cleaning assembly further has a cleaning pipeline, two ends of the cleaning pipeline form a cleaning inlet and a cleaning outlet respectively, the cleaning inlet is communicated with the water inlet main path, so that the water in the water inlet main path enters the cleaning agent storage member through the cleaning inlet to form a cleaning liquid, and the cleaning outlet is communicated with the water inlet main path, so that the cleaning liquid is delivered into the reverse osmosis membrane filter core through the cleaning outlet.

[0007] In the preferred technical scheme of the self-cleaning water purifier, the self-cleaning water purifier further comprises a booster pump and a circulating pump, the booster pump is arranged on the water inlet main path, the cleaning outlet is located at a downstream end of the booster pump, and the circulating pump is arranged on the cleaning circuit and is used to drive the cleaning liquid in the cleaning circuit to flow in a circulating manner.

[0008] In the preferred technical scheme of the self-cleaning water purifier, the cleaning assembly further comprises a cleaning valve and a cleaning agent storage member arranged on the cleaning pipeline in sequence, the cleaning agent storage member is located at a downstream end of the cleaning valve and is used to store an acidic cleaning agent or an alkaline cleaning agent, and the circulating pump is arranged on the cleaning pipeline; or the cleaning assembly comprises a converging pipe, at least two cleaning pipelines arranged in parallel, a cleaning valve and a cleaning agent storage member arranged on each cleaning pipeline, first ends of the cleaning pipelines are converged and communicated with the cleaning inlet, second ends of the cleaning pipelines are converged and communicated with the converging pipe, a terminal end of the converging pipe forms the cleaning outlet, the cleaning agent storage members on the cleaning pipelines are located at downstream ends of the cleaning valves, the cleaning agent storage members on each cleaning pipeline are used to store different types of cleaning agents, and the circulating pump is arranged on the converging pipe.

[0009] In the preferred technical scheme of the self-cleaning water purifier, the cleaning assembly further comprises a first one-way valve arranged between the cleaning outlet and the circulating pump and capable of resisting water pressure in the water inlet main path; and / or the cleaning assembly further comprises a second one-way valve arranged between the cleaning outlet and the cleaning agent storage member and capable of preventing liquid in the converging pipe from flowing reversely into the cleaning agent storage member.

[0010] In the preferred technical scheme of the self-cleaning water purifier, the heating member is arranged on the circulating pipeline or the heating member is arranged on the cleaning pipeline and located at an upstream end of the cleaning agent storage member; and / or the heating member is arranged outside the cleaning agent storage member to heat the cleaning agent storage member.

[0011] In the preferred technical solution of the self-cleaning water purifier, the self-cleaning water purifier further comprises a water inlet valve arranged on the water inlet main line and used for controlling the opening and closing of the water inlet main line, the cleaning inlet is located at the upstream end of the water inlet valve, and the cleaning outlet is located at the downstream end of the water inlet valve; and / or the self-cleaning water purifier further comprises a pre-filter unit, a water outlet end of the pre-filter unit being communicated with the water inlet main line, and the cleaning inlet being located at the downstream end of the pre-filter unit.

[0012] In the preferred technical solution of the self-cleaning water purifier, the self-cleaning water purifier further comprises a waste water pipe and a waste water valve arranged on the waste water pipe, the waste water pipe being communicated with the waste water end of the reverse osmosis membrane filter core, and the first end of the circulation pipeline being communicated with the waste water pipe.

[0013] In the preferred technical solution of the self-cleaning water purifier, the self-cleaning water purifier further comprises a pure water outlet pipe and a pure water water-using member, the pure water end of the reverse osmosis membrane filter core being communicated with the pure water water-using member through the pure water outlet pipe.

[0014] In the preferred technical solution of the self-cleaning water purifier, the self-cleaning water purifier further comprises a drain pipe and a drain valve, one end of the drain pipe being communicated with the pure water outlet pipe, the other end of the drain pipe being communicated with the waste water pipe, and the drain valve being arranged on the drain pipe and used for controlling the opening and closing of the drain pipe; or the self-cleaning water purifier further comprises a backflow pipe and a backflow valve, one end of the backflow pipe being communicated with the pure water outlet pipe, the other end of the backflow pipe being communicated with the water inlet main line, and the backflow valve being arranged on the backflow pipe and used for controlling the opening and closing of the backflow pipe.

[0015] In the case of adopting the above technical solution, the cleaning liquid in the cleaning circuit is heated by the heating member, on the one hand, the heated cleaning liquid enters the reverse osmosis membrane filter core to clean the reverse osmosis membrane filter core, which can accelerate the disintegration of dirt on the reverse osmosis membrane filter core, so that the cleaning of the reverse osmosis membrane filter core is more thorough and the cleaning efficiency is higher; on the other hand, the heating of the cleaning liquid can improve the dissolution speed and solubility of the cleaning agent, so as to ensure the concentration of the cleaning liquid and make the cleaning of the reverse osmosis membrane filter core more thorough; the circulation pipeline, the cleaning assembly, the water inlet end of the reverse osmosis membrane filter core and the waste water end of the reverse osmosis membrane filter core are sequentially communicated to form a cleaning circuit, and the cleaning liquid circulates in the cleaning circuit, which can continuously clean the reverse osmosis membrane filter core and repeatedly flush the reverse osmosis membrane filter core, so as to more effectively remove dirt on the reverse osmosis membrane filter core and make the cleaning effect better. Compared with the existing technology which uses normal-temperature cleaning liquid to soak and clean the reverse osmosis membrane filter core, the self-cleaning water purifier can clean the reverse osmosis membrane filter core more thoroughly and has a better cleaning effect, and the user experience is better. BRIEF DESCRIPTION OF DRAWINGS

[0016] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. In the drawings:

[0017] Figure 1 is a schematic diagram of the connecting structure of the self-cleaning water purifier according to Embodiment One of the present application;

[0018] Figure 2 is a schematic diagram of the connecting structure of the self-cleaning water purifier according to Embodiment Two of the present application;

[0019] Figure 3 is a schematic diagram of the connecting structure of the self-cleaning water purifier according to Embodiment Three of the present application;

[0020] Figure 4 is a schematic diagram of the connecting structure of the self-cleaning water purifier according to Embodiment Four of the present application.

[0021] Reference Signs:

[0022] 10, reverse osmosis membrane filter core; 21, cleaning agent storage member; 22, cleaning pipeline; 221, cleaning inlet; 222, cleaning outlet; 23, cleaning valve; 24, manifold; 25, first one-way valve; 26, second one-way valve; 31, circulation pipeline; 32, circulation pump; 40, heating member; 50, water inlet main line; 61, booster pump; 62, water inlet valve; 63, pre-filter unit; 64, pure water outlet pipe; 65, pure water water-using member; 71, wastewater pipe; 72, wastewater valve; 81, drain pipe; 82, drain valve; 83, backflow pipe; 84, backflow valve. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. In the drawings:

[0024] It should be noted that, in the description of the present application, the terms "upper", "lower", "inner", "outer", and the like, which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] In addition, it needs to be explained that, in the description of the utility model, unless another explicit provision and limitation, the term "mount", "arrangement", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integral connection. For the person skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to specific circumstances.

[0026] As Figures 1 to 4 The utility model provides a kind of self-cleaning water purifier, including reverse osmosis membrane filter core 10, cleaning assembly, circulation pipeline 31 and heating component 40, cleaning assembly has cleaning agent storage component 21, cleaning agent storage component 21 is used to store cleaning agent, cleaning assembly is set to be able to dissolve or dilute cleaning agent to form cleaning liquid in cleaning agent storage component 21, cleaning agent storage component 21 is communicated with the water inlet end of reverse osmosis membrane filter core 10, to send cleaning liquid to reverse osmosis membrane filter core 10;The first end of circulation pipeline 31 is communicated with the wastewater end of reverse osmosis membrane filter core 10, and its second end is communicated with cleaning assembly, so that cleaning assembly, the water inlet end of reverse osmosis membrane filter core 10 and the wastewater end of reverse osmosis membrane filter core 10 are sequentially communicated to form cleaning circuit;Heating component 40 is used to heat cleaning liquid in cleaning circuit;Wherein, self-cleaning water purifier is set to make cleaning liquid circulate in cleaning circuit.

[0027] By such setting, i.e. by setting heating component 40 to heat cleaning liquid in cleaning circuit, on the one hand, heated cleaning liquid enters reverse osmosis membrane filter core 10 to clean reverse osmosis membrane filter core 10, can just speed up the disintegration of dirt on reverse osmosis membrane filter core 10, so that the cleaning of reverse osmosis membrane filter core 10 is more thorough, and cleaning efficiency is higher;On the other hand, heating cleaning liquid can also improve the dissolution rate and solubility of cleaning agent, so as to ensure the concentration of cleaning liquid, so that cleaning liquid is more thorough to clean reverse osmosis membrane filter core 10, by setting circulation pipeline 31, cleaning assembly, the water inlet end of reverse osmosis membrane filter core 10 and the wastewater end of reverse osmosis membrane filter core 10 are sequentially communicated to form cleaning circuit, can continuously clean reverse osmosis membrane filter core 10 and can repeatedly flush reverse osmosis membrane filter core, so as to effectively remove dirt on reverse osmosis membrane filter core 10, and cleaning makes the cleaning effect better. Compared with the mode of soaking and cleaning reverse osmosis membrane filter core 10 by using normal temperature cleaning liquid in the prior art, the cleaning of reverse osmosis membrane filter core 10 in the utility model is more thorough, the cleaning effect is better, and the user's use experience is better.

[0028] As Figures 1 to 4As shown, the self-cleaning water purifier further comprises a water inlet main path 50, the water inlet main path 50 is communicated with the water inlet end of the reverse osmosis membrane filter core 10, and the cleaning assembly further has a cleaning pipeline 22, two ends of the cleaning pipeline 22 are respectively formed with a cleaning inlet 221 and a cleaning outlet 222, the cleaning inlet 221 is communicated with the water inlet main path 50, so that the water in the water inlet main path 50 enters the cleaning agent storage member 21 through the cleaning inlet 221 to form a cleaning liquid, and the cleaning outlet 222 is communicated with the water inlet main path 50, so that the cleaning liquid is transported into the reverse osmosis membrane filter core 10 through the cleaning outlet 222.

[0029] Through such an arrangement, the water in the water inlet main path 50 enters the cleaning pipeline 22 through the cleaning inlet 221, and the cleaning agent stored in the cleaning agent storage member 21 is dissolved to form a cleaning liquid, the cleaning outlet 222 is communicated with the water inlet main path 50, so that the cleaning liquid is transported into the reverse osmosis membrane filter core 10 through the cleaning outlet 222, the second end of the circulating pipeline 31 is communicated with the cleaning pipeline 22, so that the cleaning pipeline 22, the reverse osmosis membrane filter core 10 and the circulating pipeline 31 form a cleaning loop, and the cleaning liquid is circulated and washed to the reverse osmosis membrane filter core 10.

[0030] It should be noted that the cleaning inlet 221 is not limited to being arranged to be communicated with the water inlet main path 50, for example, a water inlet pipe can be directly connected to the cleaning agent storage member 21, and an external water source is transported into the cleaning agent storage member 21 through the water inlet pipe to dissolve the cleaning agent, or a first cavity and a second cavity can be arranged in the cleaning agent storage member 21, wherein the first cavity is used to store the cleaning agent, and the second cavity is used to store water, when the reverse osmosis membrane filter core 10 needs to be cleaned, the water in the second cavity and the cleaning agent in the first cavity can be mixed to form a cleaning liquid, and the like, such flexible adjustment and change do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application. Of course, preferably, the cleaning inlet 221 is arranged to be communicated with the water inlet main path 50, so that the water in the water inlet main path 50 enters the cleaning agent storage member 21 to dissolve the cleaning agent.

[0031] It should be noted that compared with the cleaning assembly arranged to have only the cleaning outlet 222, the cleaning assembly arranged to have the cleaning inlet 221 and the cleaning outlet 222 can form the cleaning liquid by injecting water into the cleaning inlet 221 during cleaning, avoiding the cleaning assembly being too large in size due to a large amount of cleaning liquid stored in the cleaning agent storage member 21, and further improving the user experience.

[0032] It should be noted that in practical application, the specific driving mode of the water purifier for driving the cleaning liquid to circulate in the cleaning circuit is not limited, for example, a circulating pump 32 can be arranged on the cleaning circuit to drive the cleaning liquid in the cleaning circuit to circulate, or the cleaning outlet of the cleaning assembly can be arranged to communicate with the water inlet main path 50 of the water purifying device and the water inlet end of the reverse osmosis membrane filter core 10, and the cleaning liquid in the cleaning circuit is driven to circulate by the booster pump on the water inlet main path 50 (not shown in the figure), and the like. Such flexible adjustment and change does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0033] As shown in Figures 1 to 4 The self-cleaning water purifier further comprises a booster pump 61 and a circulating pump 32. The booster pump 61 is arranged on the water inlet main path 50, and the cleaning outlet 222 is located at the downstream end of the booster pump 61. The circulating pump 32 is arranged on the cleaning circuit and is used to drive the cleaning liquid in the cleaning circuit to circulate.

[0034] Through such arrangement, that is, by arranging the circulating pump 32 to drive the cleaning liquid in the cleaning circuit to circulate, compared with the form of driving the cleaning liquid in the cleaning circuit to circulate by the booster pump 61, the cleaning liquid can be prevented from entering the booster pump 61 to cause corrosion to the diaphragm of the booster pump 61, and the service life of the booster pump 61 is affected. The cleaning outlet is arranged at the downstream end of the booster pump 61, which can prevent the cleaning liquid from flowing through the booster pump 61, further prolonging the service life of the booster pump. At the same time, since the circulating pump 32 has a lower cost than the booster pump 61, using the circulating pump to drive the cleaning liquid in the cleaning circuit to circulate can save costs.

[0035] It should be noted that in practical application, the cleaning outlet 222 is not limited to be arranged to communicate with the water inlet main path 50, and the cleaning assembly delivers the cleaning liquid into the reverse osmosis membrane filter core 10 through the water inlet main path 50, for example, the reverse osmosis membrane filter core 10 can be arranged to have two water inlet ends, and the two water inlet ends respectively communicate with the water inlet main path 50 and the cleaning pipeline 22, and the like. Such flexible adjustment and change does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application. Of course, preferably, the cleaning outlet 222 is arranged to communicate with the water inlet main path 50, and the cleaning assembly delivers the cleaning liquid into the reverse osmosis membrane filter core 10 through the water inlet main path 50.

[0036] The cleaning assembly of the present application will be described below in combination with the following two embodiments.

[0037] Embodiment one:

[0038] As shown in Figure 1As shown, the cleaning assembly also includes a cleaning valve 23 and a cleaning agent storage component 21 sequentially disposed on the cleaning pipeline 22. The cleaning agent storage component 21 is located downstream of the cleaning valve 23 and is used to store acidic or alkaline cleaning agents. A circulation pump 32 is disposed on the cleaning pipeline 22.

[0039] It should be noted that the installation of the circulation pump 32 is not limited to the first cleaning pipe 22. For example, the circulation pump 32 can also be installed on the circulation pipe 31, or on the main water inlet pipe 50, etc. Such adjustments and changes to the specific installation position of the circulation pump 32 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. Of course, preferably, the circulation pump 32 is installed on the cleaning pipe 22.

[0040] Understandably, the cleaning valve 23 is used to control the opening and closing of the cleaning pipeline 22. When the self-cleaning water purifier is in normal water production mode, the cleaning valve 23 cuts off the cleaning pipeline 22. When the self-cleaning water purifier cleans the reverse osmosis membrane filter element 10, the cleaning valve 23 opens, and the water in the main inlet 50 flows through the cleaning pipeline 22 and enters the cleaning agent storage component 21, dissolving the cleaning agent in the cleaning agent storage component 21 to form a cleaning liquid, which then flows out of the cleaning pipeline 22 and into the reverse osmosis membrane filter element 10.

[0041] It should be noted that in specific embodiments of this utility model, the cleaning agent can be solid or liquid, and can be acidic or alkaline. The appropriate cleaning agent can be selected according to the specific type of dirt on the reverse osmosis membrane filter element 10.

[0042] Example 2:

[0043] like Figure 2 As shown, the cleaning assembly includes a manifold 24, at least two parallel cleaning lines 22, a cleaning valve 23 disposed on each cleaning line 22, and a cleaning agent storage component 21. The first ends of the multiple cleaning lines 22 converge to form a cleaning inlet 221, and the second ends of the multiple cleaning lines 22 converge and communicate with the manifold 24. The end of the manifold 24 forms a cleaning outlet 222. The cleaning agent storage component 21 is located downstream of the cleaning valve 23. The cleaning agent storage component 21 on each cleaning line 22 is used to store different types of cleaning agents. A circulation pump 32 is disposed on the manifold 24.

[0044] By such an arrangement, the cleaning agent storage member 21 of each cleaning pipeline 22 stores different kinds of cleaning agents, and a person skilled in the art can select appropriate cleaning agents according to the kind of dirt on the reverse osmosis membrane filter element 10, and selectively open the cleaning valve 23 on the cleaning pipeline 22. The second ends of the plurality of cleaning pipelines 22 are communicated with the manifold 24, so that the cleaning liquid in the cleaning pipeline 22 enters the reverse osmosis membrane filter element 10 through the manifold 24 and the cleaning outlet 222 to clean the reverse osmosis membrane filter element 10.

[0045] It should be noted that the circulation pump 32 is not limited to being arranged on the manifold 24, for example, the circulation pump 32 can also be arranged on the circulation pipeline 31, or the circulation pump 32 can also be arranged on the water inlet main pipeline 50, etc. Such adjustment and change of the specific arrangement position of the circulation pump 32 on the cleaning circuit does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application. Of course, preferably, the circulation pump 32 is arranged on the manifold 24.

[0046] It should be noted that in actual application, the present application does not make any limitation on the specific number of the parallelly arranged cleaning pipelines 22, for example, two parallelly arranged cleaning pipelines 22 can be arranged, the cleaning valve 23 and the cleaning agent storage member 21 are arranged on the two cleaning pipelines 22 respectively, or three parallelly arranged cleaning pipelines 22 can be arranged, the cleaning valve 23 and the cleaning agent storage member 21 are arranged on the three cleaning pipelines 22 respectively, or a plurality of parallelly arranged cleaning pipelines 22 can be arranged, the cleaning valve 23 and the cleaning agent storage member 21 are arranged on the plurality of cleaning pipelines 22 respectively, etc. Such adjustment and change of the specific arrangement number of the parallelly arranged cleaning pipelines 22 does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0047] Exemplarily, the cleaning assembly includes two parallelly arranged cleaning pipelines 22, and the cleaning agent storage members 21 on the two cleaning pipelines 22 respectively store acidic cleaning agents and alkaline cleaning agents.

[0048] It should be noted that when cleaning the reverse osmosis membrane filter element 10, the acidic cleaning agent can be used to clean the reverse osmosis membrane filter element 10 first, and then the alkaline cleaning agent is used to clean the reverse osmosis membrane filter element 10, or the alkaline cleaning agent can be used to clean the reverse osmosis membrane filter element 10 first, and then the acidic cleaning agent is used to clean the reverse osmosis membrane filter element 10, etc. Such flexible adjustment and change does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0049] It also needs to be explained that the specific type of the acid cleaning agent is not limited in the utility model, for example, the acid cleaning agent can be set as at least one of malic acid, citric acid, hydrochloric acid and phosphoric acid, of course, the acid cleaning agent can also be other types of acid solution, and the person skilled in the art can adjust according to actual needs.

[0050] Preferably, the acid cleaning agent is malic acid or citric acid, which has good disinfection and bacteriostasis effect while cleaning dirt, and can disinfect and sterilize the reverse osmosis membrane filter element 10.

[0051] It needs to be explained that the specific type of the acid cleaning agent is not limited in the utility model, for example, the acid cleaning agent can be set as at least one of malic acid, citric acid, hydrochloric acid and phosphoric acid, of course, the acid cleaning agent can also be other types of acid solution, and the person skilled in the art can adjust according to actual needs.

[0052] It needs to be explained that in actual application, the person skilled in the art can set the cleaning agent storage member 21 to have an anti-backflow structure to prevent the water in the water inlet main path 50 from flowing back to the cleaning agent storage member 21 through the cleaning outlet 222, or a one-way valve 25 can be arranged at the downstream end of the cleaning agent storage member 21 to prevent the water in the water inlet main path 50 from flowing back to the cleaning agent storage member 21 through the cleaning outlet 222, or a control valve can be arranged at the downstream end of the cleaning agent storage member 21 to prevent the water in the water inlet main path 50 from flowing back to the cleaning agent storage member 21 through the cleaning outlet 222, and the like, and such flexible adjustment and change do not deviate from the principles and scope of the utility model, and should be included in the protection scope of the utility model.

[0053] Preferably, as shown in Figures 1 to 4 The self-cleaning water purifier further comprises a first one-way valve 25 arranged between the cleaning outlet and the circulating pump 32 and capable of resisting the water pressure in the water inlet main path 50.

[0054] In order to further reduce cost and increase efficiency, the circulating pump 32 is a low-cost circulating pump that is not pressure-resistant, and when the self-cleaning water purifier is in a normal water production mode, the water pressure in the water inlet main path 50 is high, and the arrangement of the first one-way valve 25 can avoid the problem of water leakage of the circulating pump 32 caused by the high water pressure in the water inlet main path 50, and further improve the user experience.

[0055] Preferably, as shown in Figure 2 and Figure 4As shown, the self-cleaning water purifier further comprises a second one-way valve 26, which is arranged between the cleaning outlet and the cleaning agent storage member 21 and can prevent the liquid in the manifold 24 from flowing back to the cleaning agent storage member 21.

[0056] Through such an arrangement, when the cleaning agent in the cleaning agent storage member on one of the cleaning branches is used to clean the reverse osmosis membrane filter core 10, the second one-way valve 26 can prevent the liquid in the manifold 24 from flowing back to the remaining cleaning agent storage members 21, thereby avoiding the cleaning agent from being dissolved too early and further improving the user experience.

[0057] It should be noted that it is not limited to arranging the second one-way valve 26 to prevent the liquid from flowing back to the cleaning agent storage member 26, for example, the cleaning agent storage member 26 can also be arranged to have a non-return structure to prevent the liquid in the manifold 24 from flowing back to the cleaning agent storage member 21, and the like. Such flexible adjustment and change do not deviate from the principles and scope of the present application and should be included in the protection scope of the present application.

[0058] It should be further noted that in the specific embodiments of the present application, the specific structure of the heating member 40 is not limited, as long as the mode of heating the cleaning liquid can be achieved, for example, the heating member 40 and the cleaning liquid can be indirectly heated by heat conduction, or the cleaning liquid can also be directly heated by arranging a heating rod in the cleaning liquid storage member 21 or the cleaning pipeline 22, or the water flowing into the cleaning agent storage member 21 can also be heated, and the like. Such adjustment and change of the specific heating mode of the heating member 40 do not deviate from the principles and scope of the present application and should be included in the protection scope of the present application.

[0059] It should be further noted that in actual application, the installation position of the heating member 40 is not limited, as long as the heating of the cleaning liquid can be achieved before the cleaning liquid enters the reverse osmosis membrane filter core 10. For example, the heating member 40 can be arranged upstream of the cleaning agent storage member 21, the water heated by the heating member 40 enters the cleaning agent storage member 21, so that the cleaning agent in the cleaning agent storage member 21 is diluted or dissolved to form the cleaning liquid; or the heating member 40 can also be arranged downstream of the cleaning agent storage member 21, the cleaning liquid is heated by the heating member 40, or the heating member 40 can also be arranged outside the cleaning agent storage member 21 for heating, and the like. Such adjustment and change of the specific position of the heating member 40 do not deviate from the principles and scope of the present application and should be included in the protection scope of the present application.

[0060] The installation position of the heating member 40 will be described below in conjunction with two embodiments.

[0061] Embodiment three:

[0062] As shown in Figure 3 , the heating member 40 is arranged on the cleaning pipeline 22 and at the upstream end of the cleaning agent storage member 21.

[0063] Through such an arrangement, the heating member 40 heats the water in the cleaning pipeline 22, so that the hot water enters the cleaning agent storage member 21, accelerating the dissolution of the cleaning agent. Meanwhile, when the cleaning liquid circulates in the cleaning circuit, the heating member 40 can heat the cleaning liquid in the cleaning circuit, and the heated cleaning liquid can better dissolve the dirt and accelerate the dissolution or dilution of the cleaning agent, which helps to improve the solubility of the cleaning agent, so that the cleaning liquid has a higher concentration of cleaning agent, the reverse osmosis membrane filter element 10 is cleaned faster, and the cleaning effect of the cleaning liquid on the reverse osmosis membrane filter element 10 is better, greatly improving the user's experience.

[0064] It should be noted that the heating member 40 can be arranged on the cleaning pipeline 22 and at the upstream end of the cleaning agent storage member 21, or the heating member 40 can be arranged on the water inlet main pipeline 50 and at the upstream end of the cleaning agent storage member 21, and the like. Such flexible adjustment and change does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0065] Preferably, as shown in Figure 2 and Figure 3 , the heating member 40 is arranged on the cleaning pipeline 22 and at the upstream end of the cleaning agent storage member 21.

[0066] It should be noted that the present application does not make any limitation on the relative position of the heating member 40 and the cleaning valve 23. For example, the heating member 40 can be arranged at the upstream end of the cleaning valve 23, or the heating member 40 can be arranged at the downstream end of the cleaning valve 23, and the like. Such adjustment and change of the relative position of the heating member 40 and the cleaning valve 23 does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0067] Exemplarily, the heating member 40 is arranged at the downstream end of the cleaning valve 23.

[0068] Embodiment four:

[0069] As shown in Figure 1 and Figure 4 , the heating member 40 is arranged on the cleaning pipeline 22 and at the upstream end of the cleaning agent storage member 21.

[0070] Through the arrangement, the liquid in the cleaning agent storage member 21 is heated by the heating member 40, the dissolution or dilution of the cleaning agent can be accelerated, the cleaned liquid after heating flows out from the cleaning agent storage member 21 to clean the reverse osmosis membrane filter core 10, the dirt dissolution speed of the cleaned liquid after heating on the reverse osmosis membrane filter core 10 is faster, the cleaning effect is better, the needs of the user can be better met, and the use experience of the user is greatly improved.

[0071] It should be noted that although the specific setting position of the heating member is introduced above in the two embodiments, this is not restrictive, for example, the heating member 40 can also be arranged on the circulating pipeline 31, and the like, and the adjustment and change of the specific setting position of the heating member 40 do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0072] It should be noted that in actual application, the heating member 40 can be arranged as a resistance type heating element, or the heating member 40 can also be arranged as an electromagnetic type heating element, and the like, and the adjustment and change of the specific setting form of the heating member 40 do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0073] Preferably, the self-cleaning water purifier further comprises a temperature detection member (not shown in the figure), which is used for detecting the temperature of the cleaning liquid.

[0074] By arranging the temperature detection member, the temperature of the cleaning liquid can be detected, on the one hand, the temperature of the cleaning liquid is too low to effectively improve the cleaning effect on the reverse osmosis membrane filter core 10; on the other hand, the temperature of the cleaning liquid is too high to cause damage to the membrane of the reverse osmosis membrane filter core 10, and the use experience of the user is further improved.

[0075] It should be noted that in actual application, the specific setting position of the temperature detection member is not limited, for example, the temperature detection member can be arranged in the cleaning agent storage member 21, or the temperature detection member can also be arranged on the cleaning pipeline 22, or the temperature detection member can also be arranged at any possible position on the cleaning pipeline, and the like, and the flexible adjustment and change do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0076] Exemplarily, the temperature detection member is arranged on the cleaning pipeline 22 and located at the downstream end of the cleaning agent storage member 21.

[0077] Preferably, the temperature detection member is in communication connection with the heating member 40.

[0078] Through such an arrangement, when the temperature detection member detects that the temperature of the cleaning liquid is too high, a signal can be transmitted to the heating member 40 to stop heating, preventing the temperature of the cleaning liquid from being too high to damage the membrane structure of the reverse osmosis membrane cartridge 10, and when the temperature detection member detects that the temperature of the cleaning liquid is too low, a signal can be transmitted to the heating member 40 to start heating, preventing the temperature of the cleaning liquid from being too low to cause poor cleaning effect, thereby helping to achieve intelligent control of the self-cleaning water purifier.

[0079] As shown in Figures 1 to 4 The self-cleaning water purifier further comprises a water inlet valve 62 arranged on the water inlet main path 50 and used to control the opening and closing of the water inlet main path 50, the cleaning inlet 221 is located at the upstream end of the water inlet valve 62, and the cleaning outlet 222 is located at the downstream end of the water inlet valve 62.

[0080] Through such an arrangement, in the case that the self-cleaning water purifier is in a normal water production mode, the water inlet valve 62 is opened, so that water can flow from the water inlet main path 50 into the reverse osmosis membrane cartridge 10 for filtration; in the case that the cleaning assembly cleans the reverse osmosis membrane cartridge 10, the water inlet valve 62 is closed, and the water in the water inlet main path 50 flows into the cleaning pipeline 22 to dissolve the cleaning agent in the cleaning agent storage member 21, forming a cleaning liquid.

[0081] It should be noted that the cleaning outlet 222 is not limited to being arranged at the downstream end of the water inlet valve 62, for example, the cleaning outlet 222 can also be arranged at the upstream end of the water inlet valve 62, etc., such flexible adjustment and change do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application. Of course, preferably, the cleaning outlet 222 is arranged at the downstream end of the water inlet valve 62.

[0082] As shown in Figures 1 to 4 The self-cleaning water purifier further comprises a pre-filter unit 63, the water outlet end of the pre-filter unit 63 is in communication with the water inlet main path 50, and the cleaning inlet 221 is located at the downstream end of the pre-filter unit 63.

[0083] By setting the pre-filtering unit 63, water can be preliminarily filtered, the water filtered by the pre-filtering unit 63 enters the reverse osmosis membrane filter core 10 through the water inlet main path 50 for filtration, the service life of the reverse osmosis membrane filter core 10 is prolonged, meanwhile, the cleaning inlet 221 is arranged at the downstream end of the pre-filtering unit 63, water filtered by the pre-filtering unit 63 can enter the cleaning agent storage member 21 through the cleaning inlet 221, the cleaning agent is dissolved and forms cleaning liquid, the cleaning degree of the cleaning agent liquid is improved, meanwhile, the solubility of the cleaning agent is also improved, the cleaning agent is dissolved by water preliminarily filtered by the pre-filtering unit 63 and the reverse osmosis membrane filter core 10 is cleaned, so that the cleaning effect is better.

[0084] It should be noted that, in actual application, the cleaning inlet 221 is not limited to be arranged at the downstream end of the pre-filtering unit 63, but can also be arranged at the upstream end of the pre-filtering unit 63, the adjustment and change of the specific arrangement position of the cleaning inlet 221 and the pre-filtering unit 63 do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0085] It should be noted that, the present application does not limit the specific communication mode of the first end of the circulation pipeline 31 and the waste water end of the reverse osmosis membrane filter core 10, for example, the first end of the circulation pipeline 31 can be arranged in communication with the waste water pipe 71, or the waste water end of the reverse osmosis membrane filter core 10 can be arranged to be selectively in communication with the waste water pipe 71 or the first end of the circulation pipeline 31 (for example, a reversing valve is arranged, the first interface of the reversing valve is in communication with the waste water end of the reverse osmosis membrane filter core 10, the second interface and the third interface of the reversing valve are respectively in communication with the waste water pipe or the first end of the circulation pipeline 31, the first interface of the reversing valve can be selectively in communication with the second interface or the third interface), etc., the flexible adjustment and change do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0086] Preferably, as shown in Figures 1 to 4 The self-cleaning water purifier further comprises a waste water pipe 71 and a waste water valve 72 arranged on the waste water pipe 71, the waste water pipe 71 is in communication with the waste water end of the reverse osmosis membrane filter core 10, and the first end of the circulation pipeline 31 is in communication with the waste water pipe 71.

[0087] Through such an arrangement, when the self-cleaning water purifier is in a normal water production mode, waste water generated by the reverse osmosis membrane filter core 10 can be discharged through the waste water pipe 71, and when the self-cleaning assembly is in a cleaning mode, cleaning liquid after cleaning the reverse osmosis membrane filter core 10 can be discharged through the waste water pipe 71. The waste water valve 72 is used to adjust the ratio of pure water and waste water when the reverse osmosis membrane filter core 10 filters water.

[0088] As shown in Figures 1 to 4As shown, the self-cleaning water purifier also includes a pure water outlet pipe 64 and a pure water user component 65. The pure water end of the reverse osmosis membrane filter element 10 is connected to the pure water user component 65 through the pure water outlet pipe 64.

[0089] With this setup, the pure water outlet pipe 64 can output the pure water produced by the reverse osmosis membrane filter cartridge 10 to the pure water user component 65 for user use.

[0090] 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 pure water component 65, as long as it can output pure water from the reverse osmosis membrane filter 10 for user consumption. For example, the pure water component 65 can be configured as a pure water tank, with pure water filtered by the reverse osmosis membrane filter 10 directly delivered to the pure water tank for user consumption. Alternatively, the pure water component 65 can be configured as a post-filter, with pure water filtered by the reverse osmosis membrane filter 10 delivered to the post-filter to improve the taste before being delivered to the user. Or, the pure water component 65 can be configured as a water outlet component (water spout or faucet), with pure water filtered by the reverse osmosis membrane filter 10 flowing directly from the water outlet component (water spout or faucet), etc. Such adjustments and changes to the specific configuration type of the pure water component 65 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.

[0091] Preferably, the pure water component 65 includes a post-filter cartridge, through which pure water filtered by the reverse osmosis membrane filter cartridge 10 is delivered to the post-filter cartridge to improve the taste before being supplied to the user for drinking.

[0092] like Figure 3 As shown, preferably, the self-cleaning water purifier also includes a drain pipe 81 and a drain valve 82. One end of the drain pipe 81 is connected to the pure water outlet pipe 64, and the other end of the drain pipe 81 is connected to the wastewater pipe 71. The drain valve 82 is installed on the drain pipe 81 and is used to control the opening and closing of the drain pipe 81.

[0093] After the self-cleaning water purifier finishes cleaning the reverse osmosis membrane filter element 10, a small amount of cleaning solution will remain on the pure water end of the reverse osmosis membrane filter element 10. Therefore, the pure water end of the reverse osmosis membrane filter element 10 contains cleaning agent residue after the self-cleaning water purifier finishes cleaning. After opening the drain valve 82, the pure water containing cleaning agent residue flowing out from the pure water end of the reverse osmosis membrane filter element 10 can flow into the wastewater pipe 71 through the drain pipe 81 and be discharged. This helps to achieve zero pollution and zero chemical addition, and further improves the user experience.

[0094] It should be noted that, not limited to through setting the drain pipe 81 and the drain valve 82, the pure water containing a small amount of cleaning agent residues of the reverse osmosis membrane filter core 10 is discharged, any other form capable of discharging the pure water containing a small amount of cleaning agent residues of the reverse osmosis membrane filter core 10 does not deviate from the principle and scope of the present application, and should be included in the protection scope of the present application.

[0095] For example, as shown in Figure 4 The self-cleaning water purifier further comprises a backflow pipe 83 and a backflow valve 84, one end of the backflow pipe 83 is in communication with the pure water outlet pipe 64, the other end of the backflow pipe 83 is in communication with the water inlet main path 50, and the backflow valve 84 is arranged on the backflow pipe 83 and is used to control the opening and closing of the backflow pipe 83.

[0096] The water at the pure water end of the reverse osmosis membrane filter core 10 can be transported into the water inlet main path 50 through the backflow pipe 83, and then transported into the water inlet end of the reverse osmosis membrane filter core 10, so that the pure water containing a small amount of cleaning agent residues at the pure water end of the reverse osmosis membrane filter core 10 is discharged after multiple filtrations, which is helpful to realize zero pollution and zero chemical addition, and further improve the user experience.

[0097] Through such a setting, when the cleaning assembly finishes cleaning the reverse osmosis membrane filter core 10, the backflow valve 84 is opened, the water containing a small amount of cleaning agent residues at the pure water end of the reverse osmosis membrane filter core 10 can be transported into the water inlet main path 50 through the backflow pipe 83, and then into the water inlet end of the reverse osmosis membrane filter core 10, so that the pure water containing a small amount of cleaning agent residues at the pure water end of the reverse osmosis membrane filter core 10 is discharged after multiple filtrations; when the self-cleaning water purifier is in a normal water production mode, the backflow valve 84 is closed, and the pure water filtered by the reverse osmosis membrane filter core 10 is transported into the pure water use component 65 through the pure water outlet pipe 64 for the user to drink.

[0098] In addition, when the self-cleaning water purifier is not used for a long time, the TDS value at the pure water end of the reverse osmosis membrane filter core 10 is high, by setting the drain pipe 81 or the backflow pipe 83, the water with high TDS at the pure water end of the reverse osmosis membrane filter core 10 can be discharged into the wastewater pipe 71 or the water inlet end of the reverse osmosis membrane filter core 10, solving the problem of "high TDS of the first cup of water".

[0099] The technical scheme of the present application has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to related technical features without deviating from the principle of the present application, and the technical scheme after the changes or replacements will fall within the protection scope of the present application.

Claims

1. A self-cleaning water purifier, characterized by, The self-cleaning water purifier comprises: a reverse osmosis membrane filter core; a cleaning assembly having a cleaning agent storage member for storing a cleaning agent, the cleaning assembly being arranged to dissolve or dilute the cleaning agent to form a cleaning solution in the cleaning agent storage member, the cleaning agent storage member being in communication with a water inlet end of the reverse osmosis membrane filter core to deliver the cleaning solution to the reverse osmosis membrane filter core; a circulation pipeline having a first end in communication with a wastewater end of the reverse osmosis membrane filter core and a second end in communication with the cleaning assembly, so that the cleaning assembly, the water inlet end of the reverse osmosis membrane filter core and the wastewater end of the reverse osmosis membrane filter core are sequentially communicated to form a cleaning loop; a heating member for heating the cleaning solution in the cleaning loop; wherein the self-cleaning water purifier is arranged to circulate the cleaning solution in the cleaning loop.

2. The self-cleaning water purifier according to claim 1, wherein The self-cleaning water purifier further comprises a water inlet main pipeline in communication with the water inlet end of the reverse osmosis membrane filter core, the cleaning assembly further comprises a cleaning pipeline having two ends forming a cleaning inlet and a cleaning outlet, respectively, the cleaning inlet being in communication with the water inlet main pipeline so that water in the water inlet main pipeline enters the cleaning agent storage member through the cleaning inlet to form the cleaning solution, and the cleaning outlet being in communication with the water inlet main pipeline to deliver the cleaning solution to the reverse osmosis membrane filter core through the cleaning outlet.

3. The self-cleaning water purifier according to claim 2, wherein The self-cleaning water purifier further comprises a booster pump arranged on the water inlet main pipeline, the cleaning outlet being located at a downstream end of the booster pump, and a circulation pump arranged on the cleaning loop and used to drive the cleaning solution in the cleaning loop to circulate.

4. The self-cleaning water purifier according to claim 3, wherein The cleaning assembly further comprises a cleaning valve and a cleaning agent storage member arranged sequentially on the cleaning pipeline, the cleaning agent storage member being located at a downstream end of the cleaning valve and used to store an acidic cleaning agent or an alkaline cleaning agent, and the circulation pump being arranged on the cleaning pipeline. Alternatively, the cleaning assembly comprises a confluence pipeline, at least two cleaning pipelines arranged in parallel, a cleaning valve and a cleaning agent storage member arranged on each of the cleaning pipelines, first ends of the cleaning pipelines converging and being in communication with the cleaning inlet, second ends of the cleaning pipelines converging and being in communication with the confluence pipeline, a terminal end of the confluence pipeline forming the cleaning outlet, the cleaning agent storage members on the cleaning pipelines being used to store different types of cleaning agents, and the circulation pump being arranged on the confluence pipeline.

5. The self-cleaning water purifier according to claim 4, wherein The cleaning assembly further comprises a first one-way valve arranged between the cleaning outlet and the circulation pump and capable of resisting water pressure in the water inlet main pipeline. And / or, the cleaning assembly further comprises a second one-way valve arranged between the cleaning outlet and the cleaning agent storage member and capable of preventing liquid in the confluence pipeline from flowing back to the cleaning agent storage member.

6. The self-cleaning water purifier according to any one of claims 1 to 5, wherein, The heating member is arranged on the circulation pipeline or the heating member is arranged on the cleaning pipeline and located at an upstream end of the cleaning agent storage member. And / or, the heating member is sleeved outside the cleaning agent storage member to heat the cleaning agent storage member.

7. The self-cleaning water purifier according to claim 2, wherein The self-cleaning water purifier further comprises a water inlet valve arranged on the water inlet main line and used for controlling the opening and closing of the water inlet main line, the cleaning inlet is located at the upstream end of the water inlet valve, and the cleaning outlet is located at the downstream end of the water inlet valve. And / or, the self-cleaning water purifier further comprises a pre-filter unit, a water outlet end of the pre-filter unit is communicated with the water inlet main line, and the cleaning inlet is located at the downstream end of the pre-filter unit.

8. The self-cleaning water purifier according to claim 1, wherein The self-cleaning water purifier further comprises a waste water pipe and a waste water valve arranged on the waste water pipe, the waste water pipe is communicated with a waste water end of the reverse osmosis membrane filter core, and a first end of the circulation pipeline is communicated with the waste water pipe.

9. The self-cleaning water purifier according to claim 8, wherein, The self-cleaning water purifier further comprises a pure water outlet pipe and a pure water water using member, a pure water end of the reverse osmosis membrane filter core is communicated with the pure water water using member through the pure water outlet pipe.

10. The self-cleaning water purifier according to claim 9, wherein, The self-cleaning water purifier further comprises a waste water pipe and a waste water valve arranged on the waste water pipe, the waste water pipe is communicated with a waste water end of the reverse osmosis membrane filter core, and a first end of the circulation pipeline is communicated with the waste water pipe. The self-cleaning water purifier further comprises a waste water pipe and a waste water valve arranged on the waste water pipe, the waste water pipe is communicated with a waste water end of the reverse osmosis membrane filter core, and a first end of the circulation pipeline is communicated with the waste water pipe. Or, the self-cleaning water purifier further comprises a water inlet main line, a backflow pipe and a backflow valve, the water inlet main line is communicated with a water inlet end of the reverse osmosis membrane filter core, one end of the backflow pipe is communicated with the pure water outlet pipe, the other end of the backflow pipe is communicated with the water inlet main line, and the backflow valve is arranged on the backflow pipe and used for controlling the opening and closing of the backflow pipe.

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