CN117023716A

CN117023716A - Water purifier flushing method and device and water purifier

Info

Publication number: CN117023716A
Application number: CN202311025753.3A
Authority: CN
Inventors: 詹婷; 陈静; 李一然
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2023-08-14
Filing date: 2023-08-14
Publication date: 2023-11-10

Abstract

The application relates to a water purifier flushing method, a water purifier flushing device, a water purifier, a storage medium and a computer program product. The method comprises the following steps: when the reverse osmosis membrane filter element in the water purifier is washed, a main water inlet valve of a water purification main path is controlled to be opened, and a waste water valve of a waste water branch path is controlled to be opened in a flow limiting manner, so that waste water generated by washing the reverse osmosis membrane filter element is discharged through the waste water branch path; and controlling the pure water inlet valve of the pure water drainage branch to be opened, and controlling the water inlet valve of the rear filter element of the pure water main path to be closed so as to enable pure water generated by flushing the reverse osmosis membrane filter element to be discharged through the pure water drainage branch. The method can prevent the rear filter element from being polluted, thereby ensuring the qualification of the water quality of the water discharged by the water purifier.

Description

Water purifier flushing method and device and water purifier

Technical Field

The application relates to the technical field of water quality treatment, in particular to a water purifier flushing method and device and a water purifier.

Background

Reverse osmosis water purifiers are popular because they can effectively remove various contaminants from tap water. However, since the reverse osmosis membrane filter element of the reverse osmosis water purifier contains components such as a protective liquid, the water purifier needs to be washed when the water purifier is first installed, so that the water quality of the effluent of the water purifier is qualified.

However, in the conventional technology, when the water purifier is flushed, as the reverse osmosis membrane filter element contains components such as protection liquid, the rear filter element can adsorb the protection liquid, so that the pollution of the rear filter element is caused, and the water quality of the effluent in the subsequent use is affected. Therefore, the water purifier is washed by the traditional technology, and the water quality of the water discharged by the water purifier cannot be guaranteed.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a water purifier flushing method, a water purifier flushing device, a water purifier, and a computer-readable storage medium capable of ensuring the water quality of the water discharged from the water purifier.

In a first aspect, the present application provides a method for flushing a water purifier. The method is applied to a water purifier comprising a water purifying main path, a waste water branch path and a pure water drainage branch path; a main water inlet valve, a reverse osmosis membrane filter element, a rear filter element water inlet valve and a rear filter element are sequentially arranged in the water purifying main path; the water inlet end of the water purifying main path is connected with the raw water inlet, and the water outlet end is connected with the pure water outlet; the water inlet valve of the main way is connected with the water inlet of the reverse osmosis membrane filter element, and the water outlet of the reverse osmosis membrane filter element is connected with the water inlet of the rear filter element through the water inlet valve of the rear filter element; the waste water branch comprises a waste water valve, and a water inlet of the waste water branch is connected with a water outlet of the reverse osmosis membrane filter element; a pure water inlet valve and a pure water check valve are arranged in the pure water drainage branch; the water inlet of the pure water drainage is connected with the water outlet of the reverse osmosis membrane filter element, and the water outlet of the pure water drainage is connected with the water outlet of the wastewater branch; the method comprises the following steps:

When a reverse osmosis membrane filter element in the water purifier is washed, a main water inlet valve of a water purification main path is controlled to be opened, and a waste water valve of a waste water branch path is controlled to be opened in a flow limiting manner, so that waste water generated by washing the reverse osmosis membrane filter element is discharged through the waste water branch path;

and controlling a pure water inlet valve of the pure water drainage branch to be opened, and controlling a water inlet valve of a rear filter element of the pure water main path to be closed so as to enable pure water generated by flushing the reverse osmosis membrane filter element to be discharged through the pure water drainage branch.

In a second aspect, the present application provides a water purifier flushing device. The device comprises:

the waste water flushing module is used for controlling the opening of a main water inlet valve of a water purifying main path and controlling the opening of a waste water valve flow limit of a waste water branch path when a reverse osmosis membrane filter element in the water purifier is flushed, so that waste water generated by flushing the reverse osmosis membrane filter element is discharged through the waste water branch path;

and the pure water flushing module is used for controlling the opening of a pure water inlet valve of the pure water drainage branch and controlling the closing of a water inlet valve of a rear filter element of the pure water main path so as to flush pure water generated by the reverse osmosis membrane filter element and drain the pure water through the pure water drainage branch.

In a third aspect, the present application also provides a water purifier, including: the device comprises a water purification main circuit, a wastewater branch circuit, a pure water drainage branch circuit and a controller, wherein the controller is electrically connected with the water purification main circuit, the controller is electrically connected with the wastewater branch circuit, the controller is electrically connected with the pure water drainage branch circuit, the controller comprises a memory and a processor, the memory stores a computer program, and the steps in the method embodiments are realized when the processor executes the computer program.

In a fourth aspect, the present application also provides a computer-readable storage medium. The computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the method embodiments described above.

According to the water purifier flushing method, the water purifier flushing device, the water purifier and the storage medium, when the reverse osmosis membrane filter element in the water purifier is flushed, the main water inlet valve of the water purifying main path is controlled to be opened, the flow limiting opening of the waste water valve of the waste water branch path is controlled to enable waste water generated by flushing the reverse osmosis membrane filter element to be discharged through the waste water branch path, the pure water inlet valve of the pure water drainage branch path is controlled to be opened, the water inlet valve of the rear filter element of the water purifying main path is controlled to be closed, and pure water generated by flushing the reverse osmosis membrane filter element is enabled to be discharged through the pure water drainage branch path. In the process of flushing the reverse osmosis membrane filter element, the water inlet valve of the rear filter element can be controlled to be closed, and the pure water inlet valve is controlled to be opened, so that pure water which is generated by flushing the reverse osmosis membrane filter element and contains components such as protection liquid can be discharged from the pure water drainage branch, and cannot flow through the rear filter element, and therefore the rear filter element can be prevented from being polluted due to the adsorption of the protection liquid in the flushing process, and the water quality of qualified water which can be generated by the water purifier after flushing can be ensured under the condition of replacing the reverse osmosis membrane filter element.

Drawings

FIG. 1 is a schematic diagram of a water purifier according to an embodiment;

FIG. 2 is a schematic diagram of a water purifier according to another embodiment;

FIG. 3 is a schematic diagram of a water purifier according to another embodiment;

FIG. 4 is a schematic flow diagram of a method of flushing a reverse osmosis membrane cartridge in one embodiment;

FIG. 5 is a schematic flow chart of a method of flushing a reverse osmosis membrane cartridge in one embodiment;

FIG. 6 is a flow diagram of a method of flushing a post-cartridge in one embodiment;

FIG. 7 is a flow chart of a method for washing a water purifier according to another embodiment;

FIG. 8 is a flow chart of a method for washing a water purifier according to another embodiment;

FIG. 9 is a flow chart of a method for washing a water purifier according to another embodiment;

FIG. 10 is a schematic flow chart of a water purifier flushing device in one embodiment;

FIG. 11 is an internal block diagram of a computer device in one embodiment.

Detailed Description

In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings. Embodiments of the application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Spatially relative terms, such as "under", "below", "beneath", "under", "above", "over" and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use and operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "under" or "beneath" other elements would then be oriented "on" the other elements or features. Thus, the exemplary terms "below" and "under" may include both an upper and a lower orientation. Furthermore, the device may also include an additional orientation (e.g., rotated 90 degrees or other orientations) and the spatial descriptors used herein interpreted accordingly.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments should be understood as "electrical connection", "communication connection", and the like if there is transmission of electrical signals or data between objects to be connected.

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. Also, the term "and/or" as used in this specification includes any and all combinations of the associated listed items.

In one embodiment, as shown in fig. 1, a water purifier including a first backflow branch is taken as an example, wherein the water inlet end of the first backflow branch is respectively connected with the water outlet of the reverse osmosis membrane filter element, the water inlet of the water purifying valve of the rear filter element and the pure water inlet valve of the pure water drainage branch; the water outlet of the first backflow branch is respectively connected with the water outlet of the main water inlet valve and the water inlet of the reverse osmosis membrane filter element, and the embodiment provides a structural schematic diagram of the water purifier, which comprises the following components:

The water inlet end of the water purification main path is connected with the raw water inlet, and the water outlet end is connected with the pure water outlet; a main water inlet valve, a reverse osmosis membrane filter element, a rear filter element water purifying valve and a rear filter element are sequentially arranged in the water purifying main path; the main water inlet valve is connected with the water inlet of the reverse osmosis membrane filter element, and the water outlet of the reverse osmosis membrane filter element is connected with the water inlet of the rear filter element through the rear filter element water purifying valve;

the waste water branch comprises a waste water valve, and a water inlet of the waste water branch is connected with a water outlet of the reverse osmosis membrane filter element;

a pure water drainage branch, in which a pure water inlet valve and a pure water check valve are sequentially arranged; the water inlet of pure water drainage is connected with the water outlet of the reverse osmosis membrane filter element, and the water outlet of pure water drainage is connected with the water outlet of the waste water branch.

The first backflow branch is internally provided with a first backflow check valve and a first backflow water inlet valve in sequence; the water inlet end of the first backflow branch is respectively connected with the water outlet of the reverse osmosis membrane filter element, the water inlet of the water purifying valve of the rear filter element and the pure water inlet valve of the pure water drainage branch; the water outlet of the first backflow branch is respectively connected with the water outlet of the main water inlet valve and the water inlet of the reverse osmosis membrane filter element.

The raw water can be tap water which is not filtered by the filter element, the pure water can be water which is filtered by the filter element, and the waste water can be water with higher concentration which is generated by filtering by a reverse osmosis membrane, namely 'concentrated water'. The raw water inlet is used for being connected with a tap water pipeline, the pure water outlet can be specifically a tap, and the conducting states of the raw water inlet and the pure water outlet can be controlled by a program or manually.

The front filter element can be a tap water filter arranged at the front end of the water purifier, and can be used for removing the precipitated impurities, rust, sand mud and other particle impurities generated in the process of pipeline transmission of tap water. The pressure stabilizing pump can be used for ensuring the stability of the water pressure in the water purifier. The reverse osmosis membrane (RO membrane) in the reverse osmosis membrane filter element is an artificial semipermeable membrane made of a simulated biological semipermeable membrane, so that the reverse osmosis membrane filter element can effectively remove dissolved salts, colloid, microorganisms and the like in water. The activated carbon in the rear filter element can be used for softening the taste of pure water generated after the filtration of the reverse osmosis membrane filter element, and effectively removing peculiar smell and heterochromatic in the water. The check valve is mainly used for a pipeline requiring unidirectional medium flow, namely, only allows the medium to flow in one direction so as to prevent the medium from flowing backwards. The main way water inlet valve, the pure water inlet valve, the rear filter element water inlet valve and the waste water valve are specifically as follows: the valve which can be opened or closed can be controlled by a program, such as a solenoid valve and the like.

Illustratively, in the process of flushing the reverse osmosis membrane filter element, the main water inlet valve, the pure water inlet valve, the waste water valve and the pure water outlet can be controlled to be opened, the post-filter element water inlet valve is closed, so that pure water generated by flushing the reverse osmosis membrane filter element is discharged from the waste water outlet through the pure water inlet valve and does not flow through the post-filter element, and waste water generated by flushing the reverse osmosis membrane filter element is discharged from the waste water outlet through the waste water valve.

Illustratively, after flushing the reverse osmosis membrane filter element, the pure water inlet valve may be controlled to be closed, the main water inlet valve and the first backflow water inlet valve may be controlled to be opened so that pure water generated by flushing the reverse osmosis membrane filter element is mixed with raw water at the water inlet of the reverse osmosis membrane filter element through the first backflow branch, the reverse osmosis membrane filter element is flushed back to fully separate out the protection liquid, and then the main water inlet valve, the rear filter element inlet valve, the waste water valve and the first backflow water inlet valve are controlled to be closed so as to soak the reverse osmosis membrane filter element.

Illustratively, after soaking the reverse osmosis membrane cartridge, controlling the main inlet valve, the waste water valve and the pure water inlet valve to be opened, controlling the first backflow inlet valve and the rear cartridge inlet valve to be closed to flush the soaking water of the reverse osmosis membrane cartridge, and discharging the soaking water of the reverse osmosis membrane cartridge from the waste water valve.

Illustratively, after the reverse osmosis membrane filter element is washed, the main water inlet valve, the pure water inlet valve, the waste water valve and the pure water outlet can be controlled to be closed so as to stand and soak the reverse osmosis membrane filter element, so that the protective liquid in the reverse osmosis membrane filter element can be fully separated out, and then the main water inlet valve, the pure water inlet valve and the waste water valve can be controlled to be opened so as to discharge pure water and waste water generated after the reverse osmosis membrane filter element is soaked.

Illustratively, after the components such as the protection liquid in the reverse osmosis membrane filter element are determined to be sufficiently washed, the main water inlet valve, the rear filter element water inlet valve, the waste water valve and the pure water outlet can be controlled to be opened, the pure water inlet valve is closed, and pure water generated after the reverse osmosis membrane filter element is filtered is used for washing the rear filter element and is discharged through the pure water outlet.

Illustratively, after the reverse osmosis membrane filter element is washed, the main water inlet valve, the rear filter element water inlet valve, the waste water valve and the pure water inlet valve are controlled to be closed so as to soak the reverse osmosis membrane filter element, so that the protective liquid in the reverse osmosis membrane filter element can be fully separated out, and then the main water inlet valve and the pure water inlet valve are controlled to be opened so as to wash the soaked water of the reverse osmosis membrane filter element.

Above-mentioned purifier, in the in-process of washing reverse osmosis membrane filter core, can control the rear-mounted filter core water intaking valve and close, control pure water intaking valve and open, make the pure water that carries components such as protection liquid that washes reverse osmosis membrane filter core and produce can follow pure water drainage branch road and discharge, can not flow through the rear-mounted filter core, thereby can avoid the rear-mounted filter core to be polluted because of adsorbing protection liquid in the washing process, on this basis, the pure water of reverse osmosis filter core output mixes with raw water through first backward flow branch road, make the solubility total solids of mixed water be less than raw water, this makes components such as protection liquid in the reverse osmosis membrane filter core can precipitate better, and then can ensure the water of qualified quality of water that can produce after the washing under the circumstances of changing the reverse osmosis membrane filter core.

In one embodiment, as shown in fig. 2, a water purifier including a second backflow branch is taken as an example for explanation, wherein a water inlet end of the second backflow branch is connected with a water outlet of a rear filter element, a water outlet end of the second backflow branch is connected with a water outlet of a main water inlet valve, and the embodiment provides a schematic structural diagram of the water purifier, which includes:

the water inlet end of the water purifying main way is connected with the raw water inlet, and the water outlet end is connected with the pure water outlet; a main water inlet valve, a reverse osmosis membrane filter element, a rear filter element water inlet valve and a rear filter element are sequentially arranged in the water purifying main path; the main water inlet valve is connected with the water inlet of the reverse osmosis membrane filter element, and the water outlet of the reverse osmosis membrane filter element is connected with the water inlet of the rear filter element through the rear filter element water inlet valve.

The waste water branch comprises a waste water valve, a water inlet of the waste water branch is connected with a water outlet of the reverse osmosis membrane filter element, and a water outlet of the waste water branch is connected with a waste water outlet.

The pure water drainage branch is sequentially provided with a pure water inlet valve and a pure water check valve; the water inlet of the pure water drainage is connected with the water outlet of the reverse osmosis membrane filter element, and the water outlet of the pure water drainage is connected with the water outlet of the waste water branch.

The second backflow branch is sequentially provided with a second backflow check valve and a second backflow water inlet valve, the water inlet end of the second backflow branch is connected with the water outlet of the rear filter element, and the water outlet end of the second backflow branch is connected with the water outlet of the main water inlet valve.

Illustratively, in the process of flushing the reverse osmosis membrane filter element, a main water inlet valve of a water purification main path can be controlled to be opened, and a waste water valve of a waste water branch path is controlled to be opened in a flow limiting manner, so that waste water generated by flushing the reverse osmosis membrane filter element is discharged through the waste water branch path; and controlling the pure water inlet valve of the pure water drainage branch to be opened, and controlling the water inlet valve of the rear filter element of the pure water main path to be closed so as to enable pure water generated by flushing the reverse osmosis membrane filter element to be discharged through the pure water drainage branch.

Illustratively, after flushing the reverse osmosis membrane cartridge, controlling the pure water inlet valve to be closed, and controlling the main water inlet valve and the first backflow water inlet valve to be opened so that pure water generated by flushing the reverse osmosis membrane cartridge is mixed with raw water, and then backflow flushing the reverse osmosis membrane cartridge.

Illustratively, after the reverse osmosis membrane filter element is backwashed for a period of time, the main water inlet valve, the post-filter element water inlet valve, the waste water valve and the first reverse osmosis membrane water inlet valve are controlled to be closed to soak the reverse osmosis membrane filter element, so that the protection liquid in the reverse osmosis membrane filter element can be fully separated out.

Illustratively, after soaking the reverse osmosis membrane cartridge for a period of time, the main inlet valve, the waste water valve and the pure water inlet valve are controlled to be opened, the first backflow inlet valve and the post-cartridge inlet valve are controlled to be closed to flush the soaking water of the reverse osmosis membrane cartridge, and a portion of the soaking water is slowly discharged from the waste water valve.

Illustratively, after flushing the reverse osmosis membrane cartridge for a period of time, the main inlet valve, the post-cartridge inlet valve, the waste water valve, and the pure water inlet valve are controlled to close to soak the reverse osmosis membrane cartridge.

Illustratively, after soaking the reverse osmosis membrane cartridge, the main water inlet valve and the pure water inlet valve are controlled to be opened to flush the soak water of the reverse osmosis membrane cartridge, thereby discharging the soak water of the reverse osmosis membrane cartridge.

Illustratively, after the soaking water of the reverse osmosis membrane filter element is washed, the pure water inlet valve and the pure water outlet valve are controlled to be closed, the main way inlet valve, the rear filter element inlet valve and the second backflow inlet valve are controlled to be opened so as to wash the rear filter element, and after the washing water generated by washing the rear filter element is mixed with the raw water, the reverse osmosis membrane filter element and the rear filter element are backwashed so as to improve the washing effect.

Above-mentioned purifier, in the in-process of washing reverse osmosis membrane filter core, can control the rear filter core water intaking valve and close, control pure water intaking valve and open, make the pure water that carries components such as protection liquid that washes reverse osmosis membrane filter core and produce, discharge from the other end of pure water drainage branch road, thereby avoid rear filter core to be polluted in the washing process, on this basis, the pure water of reverse osmosis filter core output mixes with raw water through first backward flow branch road, make the total solid of solubility of mixed water be less than raw water, this makes components such as protection liquid in the reverse osmosis membrane filter core can precipitate better, and then can ensure under the circumstances of changing the reverse osmosis membrane filter core, the water of qualified quality of water that can produce of the purifier after washing. For the newly-installed water purifier, the water with qualified water quality can be ensured by only flushing the rear filter element on the basis of flushing the reverse osmosis membrane filter element. In the process, the first reflux branch is used for flushing, so that the flushing effect can be improved, and the water consumption in the flushing process can be reduced.

In one embodiment, as shown in fig. 3, taking a water purifier including a first backflow branch and a second backflow branch as an example for illustration, the embodiment provides a schematic structural diagram of the water purifier, which includes: the main water purification path, the waste water branch path and the pure water drainage branch path are specifically limited, and are described in detail in fig. 1, and are not described herein.

The first backflow branch is provided with a first backflow check valve and a first backflow water inlet valve; the water inlet end of the first backflow branch is respectively connected with the water outlet of the reverse osmosis membrane filter element, the water inlet of the water inlet valve of the rear filter element and the pure water inlet valve of the pure water drainage branch; the water outlet of the first backflow branch is respectively connected with the water outlet of the main water inlet valve and the water inlet of the reverse osmosis membrane filter element.

The second backflow branch is provided with a second backflow check valve and a second backflow water inlet valve, the water inlet end of the second backflow branch is connected with the water outlet of the rear filter element, and the water outlet end of the second backflow branch is connected with the water outlet of the main water inlet valve.

Illustratively, after the reverse osmosis membrane filter element is washed, the first backflow branch is controlled to be opened, the pure water inlet valve and the waste water valve are controlled to be closed, and the water inlet valve of the rear filter element is controlled to be closed, so that pure water generated by washing the reverse osmosis membrane filter element is mixed with raw water at the water inlet of the reverse osmosis membrane filter element through the first backflow branch, the reverse osmosis membrane filter element is backwashed to fully separate out protective liquid, pure water generated by the reverse osmosis filter element is mixed with the raw water through the first backflow branch, the total solid of the solubility of the mixed water is smaller than that of the raw water, and the protective liquid and other components in the reverse osmosis membrane filter element can be better separated out.

In the process, the flushing, soaking and back flushing of the reverse osmosis membrane filter element and the flushing, soaking and back flushing of the rear filter element can be realized fully automatically by controlling the main inlet valve, the pure water inlet valve, the waste water valve, the rear filter element inlet valve, the first back flow inlet valve and the second back flow inlet valve. The water purifier flushing method provided by the application can be used for automatically cleaning the water purifier by controlling the valve without manually opening and closing the valve.

Above-mentioned purifier, after washing reverse osmosis membrane filter core, can control first backward flow branch road first backward flow water intaking valve and open, control pure water intaking valve, waste water valve and rearmounted filter core water intaking valve and close to the pure water that makes the reverse osmosis membrane filter core of washing produce, mix the back at the water inlet of reverse osmosis membrane filter core and raw water through first backward flow branch road, backward flow washing reverse osmosis membrane filter core is in order fully to precipitate the protection liquid, this has reduced the total solid of solubility, make the protection liquid in the reverse osmosis membrane filter core etc. the composition can precipitate better, and can practice thrift the water consumption of washing the process. In the process of flushing the reverse osmosis membrane filter element, as the water inlet valve of the rear filter element is always in a closed state, components such as protection liquid in the reverse osmosis membrane filter element cannot be adsorbed by the rear filter element through the water inlet valve of the rear filter element, so that the rear filter element can be prevented from being polluted. And the rear filter element is washed through the second reflux branch, so that the washing of the rear filter element can be realized while the water consumption for washing is saved, and the water purifier with qualified water quality of the discharged water can be obtained.

In one embodiment, a method for flushing a water purifier is provided, and the method is applied to a controller of any one of fig. 1 to 3 for example, where the controller in the water purifier can respond to a flushing mode selected by a user to control whether a water outlet valve, a water inlet valve, a reflux valve and a waste water valve in the water purifier are conducted, so as to control a flow of full-automatic flushing of the water purifier. In addition, the water purifier applied by the method comprises a water purifying main path and a water purifying drainage branch path, wherein the water purifying main path is sequentially provided with a main path water inlet valve, a reverse osmosis membrane filter element, a rear filter element water inlet valve and a rear filter element, and the water purifying drainage branch path is provided with a water purifying water inlet valve and a water purifying non-return valve. Wherein, the water inlet end of the water purifying main way is connected with the raw water inlet, and the water outlet end is connected with the pure water outlet; the main water inlet valve is connected with the water inlet of the reverse osmosis membrane filter element, and the water outlet of the reverse osmosis membrane filter element is connected with the water inlet of the rear filter element through the rear filter element water inlet valve; the waste water branch comprises a waste water valve, and a water inlet of the waste water branch is connected with a water outlet of the reverse osmosis membrane filter element; the water inlet of the pure water drainage is connected with the water outlet of the reverse osmosis membrane filter element, and the water outlet of the pure water drainage is connected with the water outlet of the waste water branch; under the condition of flushing a reverse osmosis membrane filter element in the water purifier, the water purifier flushing method mainly comprises the following steps:

When the reverse osmosis membrane filter element in the water purifier is washed, a main water inlet valve of a water purification main path is controlled to be opened, and a waste water valve of a waste water branch path is controlled to be opened in a flow limiting manner, so that waste water generated by washing the reverse osmosis membrane filter element is discharged through the waste water branch path; and controlling the pure water inlet valve of the pure water drainage branch to be opened, and controlling the water inlet valve of the rear filter element of the pure water main path to be closed so as to enable pure water generated by flushing the reverse osmosis membrane filter element to be discharged through the pure water drainage branch.

Wherein, wash filter core in purifier specifically can include: after the water purifier is installed for the first time, the filter element in the water purifier is washed, or after the filter element in the water purifier is replaced, the replaced filter element is washed.

Optionally, the controller may start a flushing mode corresponding to flushing the reverse osmosis membrane filter element in the water purifier in response to a control instruction sent by a user through the user terminal or a control instruction triggered by a user interaction key of the water purifier. The user interaction key of the water purifier can be specifically: and interactive keys such as a start key, a pause key, a mode key and the like are arranged on the shell of the water purifier. Specifically, the user can select a corresponding mode according to the need. The restriction means a state in which the amount of water flowing out is restricted.

When the reverse osmosis membrane filter element in the water purifier is washed, the high-concentration protection liquid in the reverse osmosis membrane filter element needs to be washed out, and in the washing process, as the flow limit of the waste water valve of the waste water branch is opened, the protection liquid with higher concentration is discharged through the waste water branch, and the protection liquid with lower concentration is discharged through the pure water inlet valve in the pure water drainage branch, so that the rear filter element is not polluted, and the safety of the water quality of the water discharged by the water purifier can be ensured.

In one embodiment, a method for flushing a water purifier is provided, and the method is applied to the controller of any one of the water purifiers in fig. 1 and 3, where the water purifier further includes a first backflow branch; a first backflow check valve and a first backflow water inlet valve are sequentially arranged in the first backflow branch; the water inlet end of the first backflow branch is respectively connected with the water outlet of the reverse osmosis membrane filter element, the water inlet of the water inlet valve of the rear filter element and the pure water inlet valve of the pure water drainage branch; the water outlet of the first backflow branch is respectively connected with the water outlet of the main water inlet valve and the water inlet of the reverse osmosis membrane filter element. As shown in fig. 4, the water purifier flushing method further includes the steps of:

Step 402, judging whether the duration of flushing the reverse osmosis membrane filter element reaches a first preset duration, if so, executing step 404.

And 404, controlling the pure water inlet valve to be closed, and controlling the main inlet valve and the first backflow inlet valve to be opened so as to enable pure water generated by flushing the reverse osmosis membrane filter element to be mixed with raw water, and then backflow flushing the reverse osmosis membrane filter element.

When the time for flushing the reverse osmosis membrane filter element reaches a first preset time, the protection liquid in the reverse osmosis membrane filter element is fully flushed. Considering that the water purifier provided with the protection liquid with different capacities and different concentrations needs different first preset time periods for flushing the reverse osmosis membrane filter element, the first preset time periods in the embodiment can be flexibly configured according to the experimental results of the water purifier and the actual needs of users. For example, the first preset time period may be set to 1-300 minutes. The experimental result is that the relation among the flushing effect, the flushing time and the flushing mode is determined according to the flushing of the water purifier.

Optionally, as shown in fig. 1 and 3, the controller may time a time period for flushing the reverse osmosis membrane filter element, and when the time period for flushing the reverse osmosis membrane filter element reaches a first preset time period, control the pure water inlet valve to be closed, control the main water inlet valve and the first backflow water inlet valve to be opened, so that after pure water generated by flushing the reverse osmosis membrane filter element is mixed with raw water, backflow flushing the reverse osmosis membrane filter element. Pure water produced by the reverse osmosis filter element is mixed with raw water through the first reflux branch, so that the total solid of the solubility of the mixed water is smaller than that of the raw water, and components such as protective liquid in the reverse osmosis filter element can be better separated out.

Step 406, judging whether the duration of the back flow flushing of the reverse osmosis membrane filter element reaches a second preset duration, if yes, executing step 408. If not, return to step 404.

Step 408, controlling the main inlet valve, the post filter element inlet valve, the waste water valve and the first backflow inlet valve to be closed so as to soak the reverse osmosis membrane filter element.

The second preset time period in this embodiment is set in the same manner as the first preset time period, for example, the second preset time period may be set to 1-300 minutes.

And when the time for flushing the reverse osmosis membrane filter element by reflux reaches a second preset time, the residual protection liquid in the reverse osmosis membrane filter element is characterized to be further separated out. At this time, the main water inlet valve, the rear filter element water inlet valve, the waste water valve and the first backflow water inlet valve are controlled to be closed so as to soak the reverse osmosis membrane filter element, and further components such as residual protection liquid in the filter element are promoted to be separated out.

Step 410, determining whether the duration of soaking the reverse osmosis membrane filter element reaches a third preset duration, if so, executing step 412. If not, return to step 408.

Step 412, controlling the opening of the main inlet valve, the waste water valve and the pure water inlet valve, and controlling the closing of the first backflow inlet valve and the rear filter element inlet valve to flush the soaking water of the reverse osmosis membrane filter element.

And when the soaking time of the reverse osmosis membrane filter element reaches a third preset time, the residual protection liquid in the reverse osmosis membrane filter element is fully separated out. For example, the third preset time period may be set to 0.1 to 24 hours.

Optionally, the controller may time the duration of soaking the reverse osmosis membrane filter element, and when the duration of soaking the reverse osmosis membrane filter element reaches a third preset duration, control the main water inlet valve, the waste water valve and the pure water inlet valve to be opened, and control the first backflow water inlet valve and the rear filter element water inlet valve to be closed so as to flush the soaking water of the reverse osmosis membrane filter element, so that the waste water is discharged from the waste water branch, and the pure water is discharged from the pure water drainage branch.

In this embodiment, in the in-process of washing reverse osmosis membrane filter core, can control the rear filter core water intaking valve and close, control pure water intaking valve and open, make the pure water that carries components such as protection liquid that washes reverse osmosis membrane filter core and produce can follow pure water drainage branch road and discharge, can not flow through the rear filter core, thereby can avoid the rear filter core to be polluted because of adsorbing protection liquid in the washing process, on this basis, the pure water that reverse osmosis filter core produced mixes with raw water through first backward flow branch road, make the solubility total solids of mixed water be less than raw water, this makes components such as protection liquid in the reverse osmosis membrane filter core can precipitate better, further fully precipitate protection liquid through soaking the reverse osmosis membrane filter core, and then can ensure the water of qualified quality of water that can produce after washing under the circumstances of changing reverse osmosis membrane filter core.

In one embodiment, the water purifier flushing method further comprises: if the time length of soaking water for flushing the reverse osmosis membrane filter element reaches the fourth preset time length, the pure water inlet valve is controlled to be closed, the main water inlet valve and the rear filter element inlet valve are controlled to be opened so as to flush the rear filter element, and the waste water is discharged through the pure water outlet.

Optionally, when the time length of soaking water for flushing the reverse osmosis membrane filter element reaches a fourth preset time length, the protection liquid can be determined to be fully separated out, the pure water inlet valve and the waste water valve are controlled to be closed, the main water inlet valve and the rear filter element inlet valve are controlled to be opened so as to flush the rear filter element, and pure water for flushing the rear filter element is discharged from the pure water outlet through the rear filter element inlet valve. And controlling the opening of the waste water valve so that the waste water generated after the filtration of the reverse osmosis membrane filter element is discharged from the waste water outlet through the waste water valve.

In this embodiment, when the duration of flushing the soaking water of the reverse osmosis membrane filter element reaches the fourth preset duration, it can be determined that the protection liquid is sufficiently separated out, and the main water inlet valve and the rear filter element water inlet valve are controlled to be opened by controlling the pure water inlet valve to be closed so as to flush the rear filter element. The reverse osmosis membrane filter element is firstly washed, and then the rear filter element is washed, so that the possibility of polluting the rear filter element is avoided, the washing effect of the water purifier is improved, and the water outlet quality safety of the water purifier is ensured.

In one embodiment, as shown in fig. 5, the water purifier flushing method further includes the steps of:

step 502, judging whether the duration of flushing the reverse osmosis membrane filter element reaches a fifth preset duration, if so, executing step 504.

And 504, controlling the main inlet valve, the rear filter element inlet valve, the waste water valve and the pure water inlet valve to be closed so as to soak the reverse osmosis membrane filter element.

The fifth preset time length can be flexibly configured according to experimental results and user requirements so as to fully remove pollutants and the like in the rear filter element. For example, the fifth preset time period may be set to 0.5 to 300 minutes.

Optionally, the controller may time the duration of flushing the post filter element, and when the duration of flushing the post filter element reaches a fifth preset duration, the main inlet valve, the post filter element inlet valve, the waste water valve and the pure water inlet valve are controlled to be closed so as to soak the reverse osmosis membrane filter element.

Step 506, judging whether the duration of soaking the reverse osmosis membrane filter element reaches a sixth preset duration, if so, executing step 508. If not, return to step 506.

And 508, controlling the opening of the main water inlet valve and the pure water inlet valve to flush the immersed water of the reverse osmosis membrane filter element.

The sixth preset time length can be flexibly adjusted according to the experimental result and the user requirement, so that pollutants in the rear filter element can be fully separated out. For example, the sixth preset time period may be set to 0.1 to 240 minutes.

Optionally, the controller may time the duration of soaking the post-filter element, and when the duration of soaking the post-filter element reaches a sixth preset duration, control the main water inlet valve and the pure water inlet valve to open so as to flush the soaking water of the reverse osmosis membrane filter element, and control the waste water valve to open so that the waste water generated after filtering by the reverse osmosis membrane filter element is discharged from the waste water outlet by the waste water valve.

In the embodiment, the step of soaking the rear filter element is added on the basis of flushing and soaking the reverse osmosis membrane filter element and flushing the rear filter element, so that the rear filter element is prevented from being polluted by the protective liquid, and the qualification of the water quality of the water outlet of the water purifier is guaranteed. In addition, according to the water purifier flushing method, full-automatic cleaning of the water purifier can be achieved by controlling the water inlet valve, the water outlet valve, the waste water valve and the like, so that flushing effect is guaranteed, and meanwhile flushing efficiency of the water purifier is improved.

In one embodiment, a method for flushing a water purifier is provided, and the method is applied to the controller of any one of the water purifiers in fig. 2 and 3, where the water purifier further includes a second backflow branch; the second backflow branch is sequentially provided with a second backflow check valve and a second backflow water inlet valve, the water inlet end of the second backflow branch is connected with the water outlet of the rear filter element, and the water outlet end of the second backflow branch is connected with the water outlet of the main water inlet valve.

The water purifier flushing method further comprises the following steps: if the soaking water time for flushing the reverse osmosis membrane filter element reaches the seventh preset time, controlling the pure water inlet valve and the pure water outlet to be closed, and controlling the main water inlet valve, the rear filter element inlet valve and the second backflow water inlet valve to be opened so as to flush the rear filter element, and after the flushing water generated by flushing the rear filter element is mixed with the raw water, backflow flushing the reverse osmosis membrane filter element and the rear filter element.

The seventh preset time length can be flexibly adjusted according to the experimental result and the user requirement, so that a part of pollutants in the rear filter element can be discharged. For example, the seventh preset time period may be set to 0.5 to 300 minutes.

As shown in fig. 2 and 3, after the reverse osmosis membrane filter element is soaked, the soaking water of the reverse osmosis membrane filter element is rinsed. In order to clean the soaking water, the duration of the soaking water for washing the reverse osmosis membrane filter element needs to reach a seventh preset duration. When the soaking water time of the flushing reverse osmosis membrane filter element reaches a seventh preset time, the pure water inlet valve and the pure water outlet valve are controlled to be closed, the main water inlet valve, the rear filter element inlet valve and the second backflow water inlet valve are controlled to be opened so as to flush the rear filter element, and after the flushing water generated by flushing the rear filter element is mixed with raw water, the reverse osmosis membrane filter element and the rear filter element are flushed in a backflow mode so that the water quality of the whole water purifier is replaced continuously, and the water purifier is flushed cleanly.

In this embodiment, after the soaking water for flushing the reverse osmosis membrane filter element is flushed, the second backflow branch is used for backflow flushing of the rear filter element, that is, the flushing water generated by flushing the rear filter element is mixed with raw water, and the reverse osmosis membrane filter element and the rear filter element are flushed in a backflow manner, so that the water quality of the whole water purifier is continuously replaced, and the water purifier is flushed clean, so that the water quality of the water discharged by the water purifier is guaranteed.

In one embodiment, as shown in fig. 6, the water purifier washing method further includes the steps of:

step 602, determining whether the duration of flushing the post-filter element reaches an eighth preset duration, if so, executing step 604.

Step 604, controlling a pure water outlet, a main inlet valve and a pure water inlet valve in the water purifier to be closed so as to soak the rear filter element.

The eighth preset time length can be flexibly adjusted according to the experimental result, so that pollutants in the rear filter element can be fully separated out. For example, the eighth preset time period may be set to 1 to 300 minutes.

Optionally, the controller can time the time for flushing the post-filter element, and when the time for flushing the post-filter element reaches an eighth preset value, the pure water outlet, the main water inlet valve and the pure water inlet valve in the water purifier are controlled to be closed so as to soak the post-filter element.

Step 606, determining whether the duration of soaking the post-filter element reaches a ninth preset duration, if so, executing step 608. If not, return to step 604.

Step 608, controlling the pure water outlet and the main water inlet valve to be opened so as to flush the soaking water generated by the rear filter element and discharge the soaking water from the pure water outlet.

The ninth preset time length can be flexibly adjusted according to experimental results, so that a small amount of residual pollutants in the reverse osmosis filter element and the rear filter element can be soaked and separated out. For example, the ninth preset time period may be set to 0.1 to 24 hours. In the process of flushing the soaking water generated by the post-positioned filter element, the pure water inlet valve can be electrified or not electrified.

Optionally, the controller can time the duration of soaking the post-filter element, when the duration of soaking the post-filter element reaches a ninth preset, the pure water outlet and the main water inlet valve are controlled to be opened so as to flush the soaking water generated by the post-filter element, and a large amount of raw water with high flow rate is used for flushing the membrane surface to promote the discharge of the protection liquid and the protection liquid is discharged from the pure water outlet.

Step 610, determining whether the duration of the pure water generated by washing and soaking the post-filter element reaches the tenth preset time, if yes, executing step 612.

Step 612, the flushing is stopped.

Optionally, the controller may time the duration of flushing and soaking the post-filter element, and stop flushing when the duration of flushing and soaking pure water generated by the post-filter element reaches a tenth preset time. For example, the tenth preset time period may be set to 0.5 to 240 minutes.

In this embodiment, through washing the post-filter core in order to discharge the pollutant, soak the post-filter core in order to precipitate the remaining a small amount of pollutant in the filter core, further, through washing the pollutant that soaks the post-filter core in order to discharge that soaks the precipitation, wash the purifier clean to improve the play water quality of water of purifier, guarantee the safety of play water quality.

In one embodiment, the water purifier flushing method further comprises: and circularly flushing and soaking the reverse osmosis membrane filter element until the circulation times of circularly flushing and soaking the reverse osmosis membrane filter element reach the first circulation times.

Optionally, taking the water purifier shown in fig. 1 as an example, the controller may perform steps of circularly flushing, reflowing flushing and soaking the reverse osmosis membrane filter core based on the flushing manners from step 402 to step 406 in fig. 4, so as to fully flush the protection liquid in the reverse osmosis membrane filter core, and count the circulation times until the circulation times of flushing and soaking the reverse osmosis membrane filter core in circulation reach the first circulation times.

Optionally, taking the water purifier shown in fig. 2 and 3 as an example, the controller may circularly wash and soak the reverse osmosis membrane filter element based on the washing manner from step 502 to step 504 in fig. 5, so as to sufficiently wash the protection liquid in the reverse osmosis membrane filter element, and count the number of cycles until the number of cycles of washing and soaking the reverse osmosis membrane filter element in circulation reaches the first number of cycles. Wherein the first cycle number is 1-30.

In this embodiment, the steps of circularly washing and soaking the reverse osmosis membrane filter element for a plurality of times allow the protection liquid in the reverse osmosis membrane filter element to be sufficiently washed, so that the pollution of the rear filter element due to the adsorption of the protection liquid in the reverse osmosis membrane filter element can be avoided when the rear filter element is washed with pure water filtered by the reverse osmosis membrane filter element.

In one embodiment, the water purifier flushing method further comprises: and circularly flushing and soaking the rear filter element until the circulation times of circularly flushing and soaking the rear filter element reach the second circulation times.

Optionally, taking the water purifier shown in fig. 1 as an example, the controller may circularly wash and soak the reverse osmosis membrane filter element based on the washing modes from step 602 to step 606 in fig. 6, so as to fully wash the post filter element, and count the number of cycles until the number of cycles of washing and soaking the post filter element in a circulation reaches the second number of cycles. Wherein the first cycle number is 1-30.

Optionally, taking the water purifier shown in fig. 2 and fig. 3 as an example, the controller may perform the steps of washing, circulating washing, washing and soaking the reverse osmosis membrane filter element through the second backflow branch, so as to sufficiently wash the rear filter element, and count the circulation times until the circulation times of washing and soaking the rear filter element in circulation reach the second circulation times.

In this embodiment, through the step of repeated cyclic flushing and soaking the rear filter element, no residual pollutants such as protection liquid can be caused in the rear filter element, and in this process, the reverse osmosis filter element is flushed at the same time, so that the flushing effect of the water purifier can be further improved, and the water quality of the water discharged by the water purifier is further improved, thereby ensuring that the water quality of the water discharged is qualified. The water purifier flushing method in the embodiment can fully automatically clean the water purifier, can greatly improve user experience and can also improve the flushing efficiency of the water purifier.

In one embodiment, as shown in fig. 7, there is provided a washing method of a water purifier, comprising the steps of:

step 702, when a reverse osmosis membrane filter element in the water purifier is washed, controlling a main water inlet valve of a water purification main path to be opened, and controlling a waste water valve of a waste water branch path to be opened in a flow limiting manner so as to discharge waste water generated by washing the reverse osmosis membrane filter element through the waste water branch path; and controlling the pure water inlet valve of the pure water drainage branch to be opened, and controlling the water inlet valve of the rear filter element of the pure water main path to be closed so as to enable pure water generated by flushing the reverse osmosis membrane filter element to be discharged through the pure water drainage branch.

Step 704, judging whether the duration of flushing the reverse osmosis membrane filter element reaches a first preset duration, if so, executing step 706.

Step 706, determining whether a first reflow branch exists, if yes, executing step 708. If not, return to step 710.

Step 708, controlling the pure water inlet valve to be closed, and controlling the main water inlet valve and the first backflow water inlet valve to be opened so as to enable pure water generated by flushing the reverse osmosis membrane filter element to be mixed with raw water, and backflow flushing the reverse osmosis membrane filter element.

Step 710, determining whether the duration of flushing the reverse osmosis membrane filter element reaches a fifth preset duration, if so, executing step 720.

Step 712, determining whether the duration of the reverse osmosis membrane filter element being flushed by the backflow reaches a second preset duration, if so, executing step 714. If not, return to step 708.

Step 714, controlling the main inlet valve, the post filter element inlet valve, the waste water valve and the first backflow inlet valve to be closed so as to soak the reverse osmosis membrane filter element.

Step 716, judging whether the duration of soaking the reverse osmosis membrane filter element reaches a third preset duration, if so, executing step 718. If not, return to step 714.

Step 718, controlling the opening of the main water inlet valve, the waste water valve and the pure water inlet valve, and controlling the closing of the first backflow water inlet valve and the water inlet valve of the rear filter element so as to flush the soaking water of the reverse osmosis membrane filter element.

And 720, controlling the main inlet valve, the rear filter element inlet valve, the waste water valve and the pure water inlet valve to be closed so as to soak the reverse osmosis membrane filter element.

Step 722, determining whether the duration of soaking the reverse osmosis membrane filter element reaches the sixth preset duration, if so, executing step 718.

Step 724, judging whether the cycle times of washing and soaking the reverse osmosis membrane filter element in a circulating way reach the first cycle times.

And step 726, closing the pure water inlet valve, and controlling the main inlet valve and the rear filter element inlet valve to be opened.

Step 728, it is determined whether the duration of the soaking water for washing the reverse osmosis membrane filter element reaches the seventh preset duration, if yes, step 730 is executed.

Step 730, determining whether a second reflow branch exists, if so, executing step 732. If not, go to step 736.

And 732, controlling the pure water inlet valve and the pure water outlet to be closed, and controlling the main way inlet valve, the rear filter element inlet valve and the second backflow inlet valve to be opened so as to flush the rear filter element, and backflow flushing the reverse osmosis membrane filter element and the rear filter element after flushing the rear filter element to generate flushing water and raw water which are mixed.

Step 734, determining whether the duration of flushing the post-filter element reaches the eighth preset duration, if so, executing step 736. If not, go to step 732.

Step 736, controlling the pure water inlet valve and the pure water outlet to be closed, and controlling the main way inlet valve, the rear filter element inlet valve and the second backflow inlet valve to be opened so as to flush the rear filter element, and after the flushing water generated by flushing the rear filter element is mixed with the raw water, backflow flushing the reverse osmosis membrane filter element and the rear filter element.

Step 738, determine whether the duration of soaking the post-filter element reaches the ninth preset duration, if so, execute step 740. If not, go to step 736.

Step 740, controlling the pure water outlet and the main water inlet valve to be opened so as to flush the soaking water generated by the rear filter element and discharge the soaking water from the pure water outlet;

step 742, determining whether the duration of the pure water generated by washing and soaking the post-filter element reaches the tenth preset time, if yes, executing step 744. If not, go to step 732.

In step 744, it is determined whether the number of cycles reaches the second number of cycles. If yes, go to step 746.

Step 746 stopping the flushing;

in the embodiment, the high-concentration protection liquid in the reverse osmosis filter element is discharged through the waste water valve by flushing and soaking the reverse osmosis filter element, and the pure water with lower concentration is discharged through the pure water drainage branch, so that the pollution of the rear filter element is avoided. On the basis, for the water purifier with the first backflow branch, the reverse osmosis filter element is subjected to backflow flushing through the first backflow branch before soaking, pure water produced by the reverse osmosis filter element is mixed with raw water through the first backflow branch, so that the total dissolubility solid of the mixed water is smaller than that of the raw water, and components such as protective liquid in the reverse osmosis membrane filter element can be better separated out. Further, the reverse osmosis filter element is circularly washed and soaked to achieve better washing effect. Further through washing the post-positioned filter core in order to discharge the pollutant to soak the post-positioned filter core in order to separate out remaining a small amount of pollutant in the filter core, on this basis, to the purifier that has the second backward flow branch road, carry out backward flow washing to the post-positioned filter core through the second backward flow branch road, so that the quality of water of whole purifier constantly changes, further, through the step of repeatedly washing and soaking the post-positioned filter core, make there is not remaining pollutant such as protection liquid in the post-positioned filter core, in the above-mentioned process, through washing earlier the treatment reverse osmosis filter core, wash the treatment again to the post-positioned filter core, can be on the basis of effectively avoiding the post-positioned filter core to be polluted, further improve the washing effect of purifier, improve the quality of water of the purifier, thereby ensure that the quality of water is qualified.

The controller in the water purifier provided by the application can respond to the flushing mode selected by a user to control whether the water outlet valve, the water inlet valve, the reflux valve and the waste water valve in the water purifier are conducted or not, so that the flow of full-automatic flushing of the water purifier is controlled. The flushing mode can be a full-machine flushing mode and a core replacement flushing mode. In the full machine flushing mode, flushing of the split permeable membrane cartridge and the post cartridge is required, with the steps shown in fig. 7 and 8. In the cartridge change flush mode, as shown in fig. 9, only the split permeable membrane cartridge needs to be flushed, with the steps shown in fig. 7 at steps 702-708. The water purifier flushing method in the embodiment can fully automatically clean the water purifier, can greatly improve user experience and can also improve the flushing efficiency of the water purifier.

It should be understood that, although the steps in the flowcharts related to the above embodiments are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.

Based on the same inventive concept, the application also provides a water purifier flushing device. The implementation scheme of the device for solving the problems is similar to that described in the above method, so the specific limitation of the embodiments of the water purifier flushing device provided below can be referred to the limitation of the water purifier flushing method hereinabove, and will not be repeated here.

In one embodiment, as shown in fig. 10, there is provided a water purifier washing apparatus comprising: a wastewater rinse module 1002, a pure water rinse module 1004, wherein:

and the waste water flushing module 1002 is used for controlling the opening of a main water inlet valve of a main water purifying path and controlling the opening of a waste water valve flow limit of a waste water branch path when the reverse osmosis membrane filter element in the water purifier is flushed, so that waste water generated by flushing the reverse osmosis membrane filter element is discharged through the waste water branch path.

And the pure water flushing module 1004 is used for controlling the opening of a pure water inlet valve of the pure water drainage branch and controlling the closing of a water inlet valve of a rear filter element of the pure water main path so as to flush pure water generated by the reverse osmosis membrane filter element and drain the pure water through the pure water drainage branch.

In another embodiment, the water purifier flushing device further comprises a backflow flushing module, wherein the backflow flushing module is used for controlling the pure water inlet valve to be closed if the duration of flushing the reverse osmosis membrane filter element reaches a first preset duration, controlling the main water inlet valve and the first backflow water inlet valve to be opened so as to enable pure water generated by flushing the reverse osmosis membrane filter element to be mixed with raw water, and then backflow flushing the reverse osmosis membrane filter element; the soaking time control module is used for controlling the main water inlet valve, the rear filter element water inlet valve, the waste water valve and the first backflow water inlet valve to be closed so as to soak the reverse osmosis membrane filter element if the duration of backflow flushing of the reverse osmosis membrane filter element reaches the second preset duration; and the flushing module is used for controlling the opening of the main water inlet valve, the waste water valve and the pure water inlet valve if the duration of soaking the reverse osmosis membrane filter element reaches a third preset duration, and controlling the closing of the first backflow water inlet valve and the rear filter element water inlet valve so as to flush the soaking water of the reverse osmosis membrane filter element.

In another embodiment, the water purifier flushing device further comprises a flushing time control module, wherein the flushing time control module is used for controlling the pure water inlet valve to be closed and controlling the main water inlet valve and the rear filter element inlet valve to be opened to flush the rear filter element and discharge the pure water through the pure water outlet if the time for flushing the soaking water of the reverse osmosis membrane filter element reaches a fourth preset time.

In another embodiment, the flushing time control module is further configured to control the main water inlet valve, the post-filter element water inlet valve, the wastewater valve and the pure water inlet valve to be closed to soak the reverse osmosis membrane filter element if the duration of flushing the reverse osmosis membrane filter element reaches a fifth preset duration; and the soaking time control module is used for controlling the opening of the main water inlet valve and the pure water inlet valve to flush the soaking water of the reverse osmosis membrane filter element if the duration of soaking the reverse osmosis membrane filter element reaches a sixth preset duration.

In another embodiment, the flushing time control module is further configured to control the pure water inlet valve and the pure water outlet valve to be closed, the main water inlet valve, the post filter element inlet valve and the second backflow water inlet valve to be opened if the duration of flushing the soaking water of the reverse osmosis membrane filter element reaches a seventh preset duration, so as to flush the post filter element, and backflow flush the reverse osmosis membrane filter element and the post filter element after the flushing water generated by flushing the post filter element is mixed with raw water.

In another embodiment, the flushing time control module is further configured to control the pure water outlet, the main water inlet valve and the pure water inlet valve in the water purifier to be closed when the duration of flushing the post-filter element reaches an eighth preset duration, so as to soak the post-filter element; the soaking time control module is used for controlling the pure water outlet and the main water inlet valve to be opened when the duration of soaking the rear filter element reaches a ninth preset duration so as to flush the soaking water generated by the rear filter element and discharge the soaking water from the pure water outlet; and the flushing time control module is also used for stopping flushing if the time length of the pure water generated by flushing and soaking the rear filter element reaches tenth preset time.

In another embodiment, the water purifier flushing device further includes a first circulation module for performing circulation flushing and soaking on the reverse osmosis membrane filter element until the circulation number of the circulation flushing and soaking on the reverse osmosis membrane filter element reaches the first circulation number.

In another embodiment, the water purifier flushing device further comprises a second circulation module for performing circulation flushing and soaking on the post filter element until the circulation times of the circulation flushing and soaking on the post filter element reach the second circulation times.

In one embodiment, a computer device is provided, which may be a server, and the internal structure of which may be as shown in fig. 11. The computer device includes a processor, a memory, an Input/Output interface (I/O) and a communication interface. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface is connected to the system bus through the input/output interface. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer device is used for storing the water purifier flushing data. The input/output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used for communicating with an external terminal through a network connection. The computer program when executed by a processor implements a water purifier flushing method.

It will be appreciated by those skilled in the art that the structure shown in FIG. 11 is merely a block diagram of some of the structures associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements may be applied, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.

In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the steps of the method embodiments described above when the computer program is executed.

In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when executed by a processor, implements the steps of the method embodiments described above.

In one embodiment, a water purifier includes: the device comprises a water purifying main circuit, a waste water branch circuit, a pure water drainage branch circuit and a controller, wherein the controller is electrically connected with the water purifying main circuit, the controller is electrically connected with the waste water branch circuit, the controller is electrically connected with the pure water drainage branch circuit, the controller comprises a memory and a processor, the memory stores a computer program, and the computer program realizes the steps in the method embodiments when being executed by the processor.

The user information (including but not limited to user equipment information, user personal information, etc.) and the data (including but not limited to data for analysis, stored data, presented data, etc.) related to the present application are information and data authorized by the user or sufficiently authorized by each party.

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the embodiments provided herein may include at least one of a relational database and a non-relational database. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processor referred to in the embodiments provided in the present application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, or the like, but is not limited thereto.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.

Claims

1. The water purifier flushing method is characterized by being applied to a water purifier comprising a water purifying main path, a waste water branch path and a pure water drainage branch path, wherein the water purifying main path is sequentially provided with a main path water inlet valve, a reverse osmosis membrane filter element, a rear filter element water inlet valve and a rear filter element; the water inlet end of the water purifying main path is connected with the raw water inlet, and the water outlet end is connected with the pure water outlet; the water inlet valve of the main way is connected with the water inlet of the reverse osmosis membrane filter element, and the water outlet of the reverse osmosis membrane filter element is connected with the water inlet of the rear filter element through the water inlet valve of the rear filter element; the waste water branch comprises a waste water valve, and a water inlet of the waste water branch is connected with a water outlet of the reverse osmosis membrane filter element; a pure water inlet valve and a pure water check valve are sequentially arranged in the pure water drainage branch; the water inlet of the pure water drainage is connected with the water outlet of the reverse osmosis membrane filter element, and the water outlet of the pure water drainage is connected with the water outlet of the wastewater branch; the method comprises the following steps:

2. The method of claim 1, wherein the water purifier further comprises a first return branch; a first backflow check valve and a first backflow water inlet valve are sequentially arranged in the first backflow branch; the water inlet end of the first backflow branch is respectively connected with the water outlet of the reverse osmosis membrane filter element, the water inlet of the water inlet valve of the rear filter element and the pure water inlet valve of the pure water drainage branch; the water outlet of the first backflow branch is connected with the water outlet of the main water inlet valve and the water inlet of the reverse osmosis membrane filter element respectively; the method further comprises the steps of:

if the time for flushing the reverse osmosis membrane filter element reaches a first preset time, controlling the pure water inlet valve to be closed, and controlling the main water inlet valve and the first backflow water inlet valve to be opened so as to enable pure water generated by flushing the reverse osmosis membrane filter element to be mixed with raw water and backflow-flush the reverse osmosis membrane filter element;

If the time for back flushing the reverse osmosis membrane filter element reaches a second preset time, controlling the main water inlet valve, the rear filter element water inlet valve, the waste water valve and the first back water inlet valve to be closed so as to soak the reverse osmosis membrane filter element;

if the duration of soaking the reverse osmosis membrane filter element reaches a third preset duration, controlling the main water inlet valve, the waste water valve and the pure water inlet valve to be opened, and controlling the first backflow water inlet valve and the rear filter element water inlet valve to be closed so as to flush the soaking water of the reverse osmosis membrane filter element.

3. The method according to claim 2, wherein the method further comprises:

if the time for flushing the soaking water of the reverse osmosis membrane filter element reaches the fourth preset time, the pure water inlet valve is controlled to be closed, and the main water inlet valve and the rear filter element inlet valve are controlled to be opened so as to flush the rear filter element and discharge the water through the pure water outlet.

4. The method according to claim 1, wherein the method further comprises:

if the time for flushing the reverse osmosis membrane filter element reaches a fifth preset time, controlling the main water inlet valve, the rear filter element water inlet valve, the waste water valve and the pure water inlet valve to be closed so as to soak the reverse osmosis membrane filter element;

And if the duration of soaking the reverse osmosis membrane filter element reaches a sixth preset duration, controlling the main water inlet valve and the pure water inlet valve to be opened so as to flush the soaking water of the reverse osmosis membrane filter element.

5. The method of claim 4, wherein the water purifier further comprises a second return branch; the second backflow branch is sequentially provided with a second backflow check valve and a second backflow water inlet valve, the water inlet end of the second backflow branch is connected with the water outlet of the rear filter element, and the water outlet end of the second backflow branch is connected with the water outlet of the main water inlet valve; the method further comprises the steps of:

if the soaking water time for flushing the reverse osmosis membrane filter element reaches a seventh preset time, controlling the pure water inlet valve and the pure water outlet to be closed, and controlling the main water inlet valve, the rear filter element inlet valve and the second backflow water inlet valve to be opened so as to flush the rear filter element, wherein after the flushing water generated by flushing the rear filter element is mixed with raw water, the reverse osmosis membrane filter element and the rear filter element are backwashed.

6. The method according to claim 3 or 5, characterized in that the method further comprises:

when the time for flushing the rear filter element reaches an eighth preset time, controlling a pure water outlet, the main water inlet valve and the pure water inlet valve in the water purifier to be closed so as to soak the rear filter element;

When the time for soaking the rear filter element reaches a ninth preset time, controlling the pure water outlet and the main water inlet valve to be opened so as to flush the soaking water generated by the rear filter element and discharge the soaking water from the pure water outlet;

and stopping flushing if the time length of flushing and soaking the pure water generated by the rear filter element reaches tenth preset time.

7. The method according to claim 2 or 4, characterized in that the method further comprises:

and circularly flushing and soaking the reverse osmosis membrane filter element until the circulation times of circularly flushing and soaking the reverse osmosis membrane filter element reach the first circulation times.

8. The method according to claim 3 or 5, characterized in that the method further comprises:

and circularly flushing and soaking the rear filter element until the circulation times of circularly flushing and soaking the rear filter element reach the second circulation times.

9. A water purifier flushing device, the device comprising:

10. A water purifier, comprising: a water purification main circuit, a waste water branch circuit, a water purification drain branch circuit and a controller, wherein the controller is electrically connected with the water purification main circuit, the controller is electrically connected with the waste water branch circuit, the controller is electrically connected with the water purification drain branch circuit, the controller comprises a memory and a processor, the memory stores a computer program, and the method is characterized in that the computer program realizes the steps of the method according to any one of claims 1 to 8 when being executed by the processor.