A water purifier control method and device

Abstract

The present invention discloses a water purifier control method and device, the water purifier includes a raw water branch, a booster device, a water production branch, a wastewater discharge branch and a pure water discharge branch, wherein the water production branch includes a first filter unit group and a second filter unit group, the method includes: judging whether the first filter element assembly meets the first flushing condition, when judging that the first flushing condition is met, controlling the second filter element group to perform a first flushing operation on the first filter element assembly; judging whether the second filter element assembly meets the second flushing condition, when judging that the second flushing condition is met, controlling the second filter element group to perform a second flushing operation on the second filter element assembly. It can be seen that the present invention can provide a water purifier control method with filter element groups connected in series, improve the flushing effect and efficiency of the filter element groups, and achieve the purpose of rapid flushing while saving water consumption in the flushing process through flushing operations between filter element groups and self-flushing operations of filter element groups.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification, and in particular to a water purifier control method and device. Background Art

[0002] With the rapid development of water purification technology, water purifiers that filter through reverse osmosis pressure membranes and other devices are becoming more and more popular. However, after a long period of use, the concentrated wastewater has been staying in the reverse osmosis membrane device, causing salt or other soluble solids to adhere to the reverse osmosis pressure membrane, reducing the service life of the reverse osmosis pressure membrane. Therefore, the water purifier needs to be flushed frequently.

[0003] In actual application, filtered water or raw water is usually used to flush the wastewater side of the reverse osmosis pressure membrane and the flushed water is directly discharged. However, this flushing method will cause the water purifier to discharge a large amount of wastewater during the flushing process, reducing the water production efficiency of the water purifier and wasting water resources.

[0004] Therefore, it is particularly important to provide a water purifier and a control method to improve flushing and water production efficiency. Summary of the invention

[0005] The present invention provides a water purifier control method and device, which can provide a water purifier control method with filter unit groups connected in series, improve the flushing effect and efficiency of the filter unit groups, achieve the purpose of rapid flushing while saving water consumption in the flushing process through flushing operations between the filter unit groups and self-flushing operations of the filter unit groups, further improve the filtering effect of the water purifier, make the water produced by the water purifier purer, and improve the desalination rate of the water in the water purifier head cup.

[0006] In order to solve the above technical problems, the first aspect of the present invention discloses a water purifier control method, the water purifier includes a raw water branch, a booster device, a water production branch, a wastewater discharge branch and a pure water discharge branch, the water production branch includes a first filter unit group and a second filter unit group, the first filter unit group includes a first filter element water inlet, a first filter element assembly, a first wastewater outlet, and a first pure water outlet, the second filter unit group includes a second filter element water inlet, a second filter element assembly, a second wastewater outlet, and a second pure water outlet, the raw water branch is connected to the second filter element water inlet, the second pure water outlet is connected to the first filter element water inlet through a first branch, the second wastewater outlet is connected to the first filter element water inlet through a second branch, the second pure water outlet is also connected to a pure water reflux branch, and the second wastewater outlet is also connected to a wastewater reflux branch, the method includes:

[0007] Determining whether the first filter element assembly meets a first flushing condition;

[0008] When it is determined that the first filter element assembly meets the first flushing condition, the second filter unit group is controlled to perform a first flushing operation on the first filter element assembly; the first flushing operation is used to input the pure water generated by the second filter unit group into the first filter unit group through the first branch to perform a first stage of flushing on the first filter element assembly;

[0009] determining whether the second filter element assembly meets a second flushing condition;

[0010] When it is determined that the second filter element assembly meets the second flushing condition, the first branch is controlled to perform a closing operation, and the second filter unit group is controlled to perform a second flushing operation on the second filter element assembly; the second flushing operation is used to return the pure water generated by the second filter element group to the boosting device through the pure water reflux branch and then input into the second filter unit group to perform a second stage of flushing on the second filter element assembly.

[0011] As an optional implementation, in the first aspect of the present invention, the determining whether the first filter element assembly meets the first flushing condition includes:

[0012] Determine whether the first water quality value of the first wastewater outlet exceeds a first preset threshold value, and when it is determined that the first water quality value exceeds the first preset threshold value, determine that the first filter element component meets the first flushing condition; or,

[0013] Determine whether a second water quality value of the first filter element water inlet exceeds a second preset threshold value, and when it is determined that the second water quality value exceeds the second preset threshold value, determine that the first filter element component meets the first flushing condition; or,

[0014] Determine whether the time difference between the current time point and the time point when the first filter element component was most recently flushed exceeds a first preset time length. When it is determined that the time difference between the current time point and the time point when the first filter element component was most recently flushed exceeds the first preset time length, determine that the first filter element component meets the first flushing condition; or,

[0015] Determine whether the working time of the first filter unit group exceeds a second preset time, and when it is determined that the working time of the first filter unit group exceeds the second preset time, determine that the first filter element assembly meets the first flushing condition; or,

[0016] Determine whether the water production of the first filter unit group exceeds a first preset water volume, and when it is determined that the water production of the first filter unit group exceeds the first preset water volume, determine that the first filter element assembly meets the first flushing condition; or,

[0017] It is determined whether the third water quality value of the first pure water outlet exceeds a third preset threshold value. When it is determined that the third water quality value exceeds the third preset threshold value, it is determined that the first filter element assembly meets the first flushing condition.

[0018] As an optional embodiment, in the first aspect of the present invention, controlling the second filter unit group to perform a first flushing operation on the first filter element assembly includes:

[0019] When the flushing in the first stage is performed, controlling the second branch to perform a closing operation;

[0020] According to a preset control mode, a first adjustment parameter of the wastewater return branch is determined; according to the first adjustment parameter of the wastewater return branch, the wastewater return branch is controlled to perform a first wastewater return operation, wherein the first wastewater return operation is used to control the wastewater discharged from the second wastewater outlet to return to the boosting device and then be input into the second filter unit group during the first stage of flushing;

[0021] The pure water discharged from the second pure water outlet is input into the first filter unit group through the first branch to flush the first filter element assembly.

[0022] As an optional implementation manner, in the first aspect of the present invention, determining the first adjustment parameter of the wastewater return branch according to the preset control mode includes:

[0023] According to a preset control mode, a first adjustment parameter of the wastewater return branch is determined, the first adjustment parameter including a first adjustment duration, a second adjustment duration, and a third adjustment duration; the first adjustment duration is used to indicate the duration of controlling all wastewater discharged from the second wastewater outlet to flow back to the second filter unit group during the first stage of flushing; the second adjustment duration is used to indicate the duration of controlling the wastewater discharged from the second wastewater outlet to flow back to the second filter unit group in a matching proportion during the first stage of flushing; the third adjustment duration is used to indicate the duration of controlling the closure of the wastewater branch; or,

[0024] According to the preset control mode, determining the magnitude relationship between the real-time water quality value of the second wastewater outlet and the first flushing water quality threshold and the second flushing water quality threshold during the first stage of flushing; wherein the first flushing water quality threshold is less than the second flushing water quality threshold;

[0025] When it is determined that the real-time water quality value of the second wastewater outlet is less than or equal to the first flushing water quality threshold, determining a first adjustment parameter of the wastewater return branch, wherein the first adjustment parameter is specifically used to control all wastewater discharged from the second wastewater outlet during the first stage of flushing to flow back to the second filter unit group through the wastewater return branch;

[0026] When it is determined that the real-time water quality value of the second wastewater outlet is less than the second flushing water quality threshold and greater than the first flushing water quality threshold, determining a first adjustment parameter of the wastewater return branch, wherein the first adjustment parameter is specifically used to control the wastewater discharged from the second wastewater outlet during the first stage of flushing to flow back to the second filter unit group through the wastewater return branch in a matching proportion;

[0027] When it is determined that the real-time water quality value of the second wastewater outlet is greater than or equal to the second flushing water quality threshold, the first adjustment parameter of the wastewater return branch is determined. The first adjustment parameter is specifically used to control the closure of the wastewater return branch during the first stage of flushing.

[0028] As an optional implementation, in the first aspect of the present invention, the determining whether the second filter element assembly satisfies the second flushing condition includes:

[0029] Determine whether the duration of the first flushing operation exceeds a third preset duration, and when it is determined that the duration of the first flushing operation exceeds the third preset duration, determine that the second filter element assembly meets the second flushing condition; or,

[0030] Determine whether the fourth water quality value of the second wastewater outlet exceeds a fourth preset threshold value, and when it is determined that the fourth water quality value exceeds the fourth preset threshold value, determine that the second filter element assembly meets the second flushing condition; or,

[0031] Determine whether the fifth water quality value of the water inlet of the second filter element exceeds the fifth preset threshold value, and when it is determined that the fifth water quality value exceeds the fifth preset threshold value, determine that the second filter element assembly meets the second flushing condition; or,

[0032] Determine whether the time difference between the current time point and the time point when the second filter element component was most recently flushed exceeds a fourth preset time length. When it is determined that the time difference between the current time point and the time point when the second filter element component was most recently flushed exceeds the fourth preset time length, determine that the second filter element component meets the second flushing condition; or,

[0033] Determine whether the working time of the second filter unit group exceeds a fifth preset time, and when it is determined that the working time of the second filter unit group exceeds the fifth preset time, determine that the second filter element assembly meets the second flushing condition; or,

[0034] Determine whether the water production of the second filter unit group exceeds the second preset water volume, and when it is determined that the water production of the second filter unit group exceeds the second preset water volume, determine that the second filter element assembly meets the second flushing condition; or,

[0035] It is determined whether the sixth water quality value of the second pure water outlet exceeds the sixth preset threshold value. When it is determined that the sixth water quality value exceeds the sixth preset threshold value, it is determined that the second filter element assembly meets the second flushing condition.

[0036] As an optional embodiment, in the first aspect of the present invention, controlling the second filter unit group to perform a second flushing operation on the second filter element assembly includes:

[0037] When performing the second stage of flushing, controlling the first branch and the second branch to perform a closing operation;

[0038] The pure water reflux branch is controlled to perform a pure water reflux operation, wherein the pure water reflux operation is used to return part or all of the pure water discharged from the second pure water outlet to the boosting device and then input it into the second filter unit group, so that it can be mixed with the raw water in the raw water branch to flush the second filter element assembly.

[0039] As an optional embodiment, in the first aspect of the present invention, after controlling the second filter unit group to perform a second flushing operation on the second filter element assembly, the method further includes:

[0040] Determining a second adjustment parameter of the wastewater return branch according to the preset control mode;

[0041] According to the second adjustment parameter of the wastewater return branch, the wastewater return branch is controlled to perform a second wastewater return operation, and the second wastewater return operation is used to control the wastewater discharged from the second wastewater outlet to return to the boosting device and then input into the second filter unit group, so that it can be mixed with the raw water of the raw water branch and the pure water returned from the pure water branch to perform the third stage of flushing of the second filter element assembly.

[0042] As an optional implementation manner, in the first aspect of the present invention, determining the second adjustment parameter of the wastewater return branch according to the preset control mode includes:

[0043] According to the preset control mode, determining an adjustment time parameter of the wastewater return branch when performing the third stage of flushing, wherein the adjustment time parameter is specifically used to control the duration of the wastewater discharged from the second wastewater outlet during the third stage of flushing to flow back to the second filter unit group; or,

[0044] According to the preset control mode, determining the magnitude relationship between the real-time water quality value of the second wastewater outlet and the third flushing water quality threshold and the fourth flushing water quality threshold during the third stage of flushing; wherein the third flushing water quality threshold is greater than the fourth flushing water quality threshold;

[0045] According to the relationship between the real-time water quality value of the second wastewater outlet and the third flushing water quality threshold and the fourth flushing water quality threshold during the third stage of flushing, the second adjustment parameter of the wastewater return branch is determined; wherein the second adjustment parameter is used to control the wastewater return branch to perform the second wastewater return operation.

[0046] As an optional embodiment, in the first aspect of the present invention, the method further comprises:

[0047] Determining whether the first flushing operation and the second flushing operation are completed;

[0048] When it is determined that the first flushing operation and the second flushing operation have been completed, determining whether a water fetching instruction has been received;

[0049] When it is determined that the water intake instruction is received, controlling the water production branch to perform a water production operation;

[0050] Wherein, controlling the water production branch to perform water production operation includes:

[0051] Controlling the raw water of the raw water branch to be input to the water inlet of the second filter element through the boosting device, so as to control the second filter unit group to perform the first water production operation;

[0052] The pure water reflux branch and the first branch are controlled to be closed, and at the same time, all wastewater discharged from the second wastewater outlet is controlled to be input into the first filter element water inlet through the second branch, so as to control the first filter unit group to perform the second water production operation.

[0053] The second aspect of the present invention discloses a water purifier control device, the water purifier comprises a raw water branch, a booster device, a water production branch, a wastewater discharge branch and a pure water discharge branch, the water production branch comprises a first filter unit group and a second filter unit group, the first filter unit group comprises a first filter element water inlet, a first filter element assembly, a first wastewater outlet, and a first pure water outlet, the second filter unit group comprises a second filter element water inlet, a second filter element assembly, a second wastewater outlet, and a second pure water outlet, the raw water branch is connected to the second filter element water inlet, the second pure water outlet is connected to the first filter element water inlet through a first branch, the second wastewater outlet is connected to the first filter element water inlet through a second branch, the second pure water outlet is also connected to a pure water reflux branch, and the second wastewater outlet is also connected to a wastewater reflux branch, the device comprises:

[0054] A first judging module, used to judge whether the first filter element assembly meets a first flushing condition;

[0055] A first flushing module, used for controlling the second filter unit group to perform a first flushing operation on the first filter element assembly when the first judgment module determines that the first filter element assembly meets the first flushing condition; the first flushing operation is used for inputting the pure water generated by the second filter element group into the first filter element group through the first branch to perform a first stage of flushing on the first filter element assembly;

[0056] A second judging module, used to judge whether the second filter element assembly meets a second flushing condition;

[0057] The second flushing module is used to control the first branch to perform a closing operation and control the second filter unit group to perform a second flushing operation on the second filter element assembly when the second judgment module determines that the second filter element assembly meets the second flushing condition; the second flushing operation is used to return the pure water generated by the second filter element group to the boosting device through the pure water reflux branch and then input it into the second filter unit group to perform a second stage of flushing on the second filter element assembly.

[0058] As an optional implementation manner, in the second aspect of the present invention, the first determination module is specifically configured to:

[0059] Determine whether the first water quality value of the first wastewater outlet exceeds a first preset threshold value, and when it is determined that the first water quality value exceeds the first preset threshold value, determine that the first filter element component meets the first flushing condition; or,

[0060] Determine whether a second water quality value of the first filter element water inlet exceeds a second preset threshold value, and when it is determined that the second water quality value exceeds the second preset threshold value, determine that the first filter element component meets the first flushing condition; or,

[0061] Determine whether the time difference between the current time point and the time point when the first filter element component was most recently flushed exceeds a first preset time length. When it is determined that the time difference between the current time point and the time point when the first filter element component was most recently flushed exceeds the first preset time length, determine that the first filter element component meets the first flushing condition; or,

[0062] Determine whether the working time of the first filter unit group exceeds a second preset time, and when it is determined that the working time of the first filter unit group exceeds the second preset time, determine that the first filter element assembly meets the first flushing condition; or,

[0063] Determine whether the water production of the first filter unit group exceeds a first preset water volume, and when it is determined that the water production of the first filter unit group exceeds the first preset water volume, determine that the first filter element assembly meets the first flushing condition; or,

[0064] It is determined whether the third water quality value of the first pure water outlet exceeds a third preset threshold value. When it is determined that the third water quality value exceeds the third preset threshold value, it is determined that the first filter element assembly meets the first flushing condition.

[0065] As an optional embodiment, in the second aspect of the present invention, the first flushing module includes:

[0066] A first control submodule, used for controlling the second branch to perform a closing operation when performing the first stage of flushing;

[0067] A first determination submodule, used to determine a first adjustment parameter of the wastewater return branch according to a preset control mode;

[0068] A second control submodule, for controlling the wastewater return branch to perform a first wastewater return operation according to a first adjustment parameter of the wastewater return branch, wherein the first wastewater return operation is used to control the wastewater discharged from the second wastewater outlet to return to the boosting device during the first stage of flushing and then be input into the second filter unit group;

[0069] The first flushing submodule is used to input the pure water discharged from the second pure water outlet into the first filter unit group through the first branch to flush the first filter element assembly.

[0070] As an optional implementation manner, in the second aspect of the present invention, the first determining submodule is specifically configured to:

[0071] According to a preset control mode, a first adjustment parameter of the wastewater return branch is determined, the first adjustment parameter including a first adjustment duration, a second adjustment duration, and a third adjustment duration; the first adjustment duration is used to indicate the duration of controlling all wastewater discharged from the second wastewater outlet to flow back to the second filter unit group during the first stage of flushing; the second adjustment duration is used to indicate the duration of controlling the wastewater discharged from the second wastewater outlet to flow back to the second filter unit group in a matching proportion during the first stage of flushing; the third adjustment duration is used to indicate the duration of controlling the closure of the wastewater branch; or,

[0072] According to the preset control mode, determining the magnitude relationship between the real-time water quality value of the second wastewater outlet and the first flushing water quality threshold and the second flushing water quality threshold during the first stage of flushing; wherein the first flushing water quality threshold is less than the second flushing water quality threshold;

[0073] When it is determined that the real-time water quality value of the second wastewater outlet is less than or equal to the first flushing water quality threshold, determining a first adjustment parameter of the wastewater return branch, wherein the first adjustment parameter is specifically used to control all wastewater discharged from the second wastewater outlet during the first stage of flushing to flow back to the second filter unit group through the wastewater return branch;

[0074] When it is determined that the real-time water quality value of the second wastewater outlet is less than the second flushing water quality threshold and greater than the first flushing water quality threshold, determining a first adjustment parameter of the wastewater return branch, wherein the first adjustment parameter is specifically used to control the wastewater discharged from the second wastewater outlet during the first stage of flushing to flow back to the second filter unit group through the wastewater return branch in a matching proportion;

[0075] When it is determined that the real-time water quality value of the second wastewater outlet is greater than or equal to the second flushing water quality threshold, the first adjustment parameter of the wastewater return branch is determined. The first adjustment parameter is specifically used to control the closure of the wastewater return branch during the first stage of flushing.

[0076] As an optional implementation manner, in the second aspect of the present invention, the second determination module is specifically configured to:

[0077] Determine whether the duration of the first flushing operation exceeds a third preset duration, and when it is determined that the duration of the first flushing operation exceeds the third preset duration, determine that the second filter element assembly meets the second flushing condition; or,

[0078] Determine whether the fourth water quality value of the second wastewater outlet exceeds a fourth preset threshold value, and when it is determined that the fourth water quality value exceeds the fourth preset threshold value, determine that the second filter element assembly meets the second flushing condition; or,

[0079] Determine whether the fifth water quality value of the water inlet of the second filter element exceeds the fifth preset threshold value, and when it is determined that the fifth water quality value exceeds the fifth preset threshold value, determine that the second filter element assembly meets the second flushing condition; or,

[0080] Determine whether the time difference between the current time point and the time point when the second filter element component was most recently flushed exceeds a fourth preset time length. When it is determined that the time difference between the current time point and the time point when the second filter element component was most recently flushed exceeds the fourth preset time length, determine that the second filter element component meets the second flushing condition; or,

[0081] Determine whether the working time of the second filter unit group exceeds a fifth preset time, and when it is determined that the working time of the second filter unit group exceeds the fifth preset time, determine that the second filter element assembly meets the second flushing condition; or,

[0082] Determine whether the water production of the second filter unit group exceeds the second preset water volume, and when it is determined that the water production of the second filter unit group exceeds the second preset water volume, determine that the second filter element assembly meets the second flushing condition; or,

[0083] It is determined whether the sixth water quality value of the second pure water outlet exceeds the sixth preset threshold value. When it is determined that the sixth water quality value exceeds the sixth preset threshold value, it is determined that the second filter element assembly meets the second flushing condition.

[0084] As an optional embodiment, in the second aspect of the present invention, the second flushing module includes:

[0085] A third control submodule, used for controlling the first branch and the second branch to perform a closing operation when the second stage of flushing is performed;

[0086] The second flushing submodule is used to control the pure water reflux branch to perform a pure water reflux operation, and the pure water reflux operation is used to return part or all of the pure water discharged from the second pure water outlet to the boosting device and then input it into the second filter unit group to mix it with the raw water in the raw water branch to flush the second filter element assembly.

[0087] As an optional implementation, in the second aspect of the present invention, the device further includes:

[0088] A determination module, used to determine a second adjustment parameter of the wastewater return branch according to the preset control mode;

[0089] The third flushing module is used to control the wastewater return branch to perform a second wastewater return operation according to the second adjustment parameter of the wastewater return branch. The second wastewater return operation is used to control the wastewater discharged from the second wastewater outlet to return to the boosting device and then input into the second filter unit group, so that it is mixed with the raw water of the raw water branch and the pure water returned from the pure water branch to perform the third stage of flushing on the filter element.

[0090] As an optional implementation manner, in the second aspect of the present invention, the determining module is specifically configured to:

[0091] According to the preset control mode, determining an adjustment time parameter of the wastewater return branch when performing the third stage of flushing, wherein the adjustment time parameter is specifically used to control the duration of the wastewater discharged from the second wastewater outlet during the third stage of flushing to flow back to the second filter unit group; or,

[0092] According to the preset control mode, determining the magnitude relationship between the real-time water quality value of the second wastewater outlet and the third flushing water quality threshold and the fourth flushing water quality threshold during the third stage of flushing; wherein the third flushing water quality threshold is greater than the fourth flushing water quality threshold;

[0093] According to the relationship between the real-time water quality value of the second wastewater outlet and the third flushing water quality threshold and the fourth flushing water quality threshold during the third stage of flushing, the second adjustment parameter of the wastewater return branch is determined; wherein the second adjustment parameter is used to control the wastewater return branch to perform the second wastewater return operation.

[0094] As an optional implementation, in the second aspect of the present invention, the device further includes:

[0095] A third judging module, used for judging whether the first flushing operation and the second flushing operation have been completed;

[0096] The third judgment module is further configured to judge whether a water taking instruction is received when the third judgment module judges that the first flushing operation and the second flushing operation are completed;

[0097] A water production module, configured to control the water production branch to perform a water production operation when the third judgment module determines that the water intake instruction is received;

[0098] Wherein, the water production module is specifically used for:

[0099] Controlling the raw water of the raw water branch to be input to the water inlet of the second filter element through the boosting device, so as to control the second filter unit group to perform the first water production operation;

[0100] The pure water reflux branch and the first branch are controlled to be closed, and at the same time, all wastewater discharged from the second wastewater outlet is controlled to be input into the first filter element water inlet through the second branch, so as to control the first filter unit group to perform the second water production operation.

[0101] The third aspect of the present invention discloses another water purifier control device, the device comprising:

[0102] A memory storing executable program code;

[0103] a processor coupled to the memory;

[0104] The processor calls the executable program code stored in the memory to execute part or all of the steps in any one of the water purifier control methods disclosed in the first aspect of the present invention.

[0105] The fourth aspect of the present invention discloses a computer storage medium, which stores computer instructions. When the computer instructions are called, they are used to execute part or all of the steps in any water purifier control method disclosed in the first aspect of the present invention.

[0106] Compared with the prior art, the present invention has the following beneficial effects:

[0107] In the present invention, a water purifier control method and device are disclosed. The water purifier includes a raw water branch, a booster device, a water production branch, a wastewater discharge branch and a pure water discharge branch, wherein the water production branch includes a first filter unit group and a second filter unit group. The method includes: judging whether the first filter element assembly meets the first flushing condition, and when it is judged that the first flushing condition is met, controlling the second filter unit group to perform a first flushing operation on the first filter element assembly; judging whether the second filter element assembly meets the second flushing condition, and when it is judged that the second flushing condition is met, controlling the second filter unit group to perform a second flushing operation on the second filter element assembly. It can be seen that the present invention can provide a water purifier control method with filter element groups connected in series, improve the flushing effect and efficiency of the filter element groups, and achieve the purpose of rapid flushing while saving water consumption in the flushing process through the flushing operation between the filter element groups and the self-flushing operation of the filter element groups, further improving the filtering effect of the water purifier, making the water produced by the water purifier purer, and improving the desalination rate of the water in the first cup of the water purifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0108] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0109] Figure 1 It is a flow chart of a water purifier control method disclosed in an embodiment of the present invention;

[0110] Figure 2 It is a flow chart of another water purifier control method disclosed in an embodiment of the present invention;

[0111] Figure 3 It is a structural schematic diagram of a water purifier control device disclosed in an embodiment of the present invention;

[0112] Figure 4 It is a structural schematic diagram of another water purifier control device disclosed in an embodiment of the present invention;

[0113] Figure 5 It is a structural schematic diagram of another water purifier control device disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0114] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0115] The terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, device, product or end including a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units inherent to these processes, methods, products or ends.

[0116] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0117] The present invention discloses a water purifier control method and device, which can provide a water purifier control mode with a filter unit group connected in series, improve the flushing effect and efficiency of the filter unit group, achieve the purpose of rapid flushing and save water consumption in the flushing process through the flushing operation between the filter unit groups and the self-flushing operation of the filter unit group, further improve the filtering effect of the water purifier, make the water produced by the water purifier purer, and improve the desalination rate of the water in the water purifier head. The following are detailed descriptions.

[0118] Embodiment 1

[0119] See also Figure 1 , Figure 1 : is a flow chart of a water purifier control method disclosed in an embodiment of the present invention. Figure 1 The described method can be applied to a water purifier control device, which can be an independent device (such as a water purifier) ​​or a server corresponding to the water purifier control device, which is not limited in the embodiments of the present invention. Figure 1 As shown, the water purifier control method may include the following operations:

[0120] In an embodiment of the present invention, the water purifier includes a raw water branch, a booster device, a water production branch, a wastewater discharge branch and a pure water discharge branch, the water production branch includes a first filter unit group and a second filter unit group, wherein the first filter unit group includes a first filter element water inlet, a first filter element assembly, a first wastewater outlet, and a first pure water outlet, the second filter unit group includes a second filter element water inlet, a second filter element assembly, a second wastewater outlet, and a second pure water outlet, the raw water branch is connected to the second filter element water inlet, the second pure water outlet is connected to the first filter element water inlet through the first branch, the second wastewater outlet is connected to the first filter element water inlet through the second branch, the second pure water outlet is also connected to a pure water reflux branch, and the second wastewater outlet is also connected to a wastewater reflux branch. In addition, the pure water reflux branch connects the raw water branch and the second pure water outlet, and the wastewater reflux branch connects the raw water branch and the second wastewater outlet. The booster device is located upstream of the water production branch, and the raw water flows through the booster device into the water production branch. The first filter unit group and the second filter unit group in the water production branch are connected in series as a whole. The wastewater generated by the second filter unit group can continue to be input into the first filter unit group for secondary filtration. Finally, the pure water generated by the first filter unit group can be combined with the pure water generated by the second filter unit group and discharged through the pure water discharge branch for users. It should be noted that the various water inlets, water outlets, etc. (for example, the first wastewater outlet) mentioned above are only general in quantity, including both one outlet and multiple branch outlets, and this embodiment of the present invention is not limited to this.

[0121] 101. Determine whether the first filter element assembly meets the first flushing condition.

[0122] In the embodiment of the present invention, according to the description of the water path structure of the above-mentioned water purifier, the first filter element assembly serves as a passive flushing assembly, which cannot perform its own flushing operation through the first filter unit group, and can only rely on the second filter element assembly to perform the flushing operation, and thus it is necessary to first determine whether the first filter element assembly meets the first flushing condition.

[0123] 102. When it is determined that the first filter element assembly meets the first flushing condition, control the second filter unit group to perform a first flushing operation on the first filter element assembly.

[0124] In an embodiment of the present invention, when it is determined that the first filter element assembly meets the first flushing condition, the second filter unit group can be controlled to perform the first flushing operation on the first filter element assembly. The specific method of the first flushing operation is: the raw water is input into the second filter element group through the booster device, and the second filter element group produces pure water and waste water. At this time, the second branch must be closed, and the waste water cannot be input into the first filter element group to avoid secondary contamination. Only pure water is input into the first filter element group to perform the first stage of flushing on the first filter element assembly. It should be noted that the flushing of the first filter element at this time is a 100% pure water flushing, which can flush the first filter element more cleanly.

[0125] 103. Determine whether the second filter element assembly meets the second flushing condition.

[0126] In the embodiment of the present invention, after the first filter element assembly performs the first flushing operation, it can be determined whether to flush the second filter element assembly according to the actual water quality.

[0127] 104. When it is determined that the second filter element assembly meets the second flushing condition, the first branch is controlled to perform a closing operation, and the second filter unit group is controlled to perform a second flushing operation on the second filter element assembly.

[0128] In the embodiment of the present invention, when it is determined that the second filter element assembly meets the second flushing condition, the first branch is first controlled to perform a closing operation to prevent the pure water from continuing to flush the first filter element assembly, and then the second filter unit group can be controlled to perform a self-flushing operation on the second filter element assembly, that is, the above-mentioned second flushing operation. The specific method of the second flushing operation is as follows: the raw water is input into the second filter unit group through the boosting device, and the second filter unit group generates pure water and waste water, and the waste water can be directly discharged through the wastewater discharge branch, or it can be refluxed for reuse; wherein, the pure water can be refluxed to the boosting device through the pure water reflux branch and then input into the second filter unit to perform the second stage of flushing the second filter element assembly.

[0129] It can be seen that the method described in the embodiment of the present invention can provide a control method for a water purifier with filter unit groups connected in series, thereby improving the flushing effect and efficiency of the filter unit groups. Through the flushing operation between the filter unit groups and the self-flushing operation of the filter unit groups, the purpose of rapid flushing can be achieved while saving water in the flushing process, further improving the flushing effect of the water purifier, increasing the water production rate of the water purifier, and avoiding excessively high concentrations of wastewater that affect the life of the filter element.

[0130] In an optional embodiment, the method for determining whether the first filter element component meets the first flushing condition may include the following operations:

[0131] Determine whether the first water quality value of the first wastewater outlet exceeds the first preset threshold value, and when it is determined that the first water quality value exceeds the first preset threshold value, determine that the first filter element component meets the first flushing condition; or,

[0132] Determine whether the second water quality value of the first filter element water inlet exceeds the second preset threshold value, and when it is determined that the second water quality value exceeds the second preset threshold value, determine that the first filter element component meets the first flushing condition; or,

[0133] Determine whether the time difference between the current time point and the time point when the first filter element component was most recently flushed exceeds the first preset time length. When it is determined that the time difference between the current time point and the time point when the first filter element component was most recently flushed exceeds the first preset time length, determine that the first filter element component meets the first flushing condition; or,

[0134] Determine whether the working time of the first filter unit group exceeds the second preset time, and when it is determined that the working time of the first filter unit group exceeds the second preset time, determine that the first filter element assembly meets the first flushing condition; or,

[0135] Determine whether the water production of the first filter unit group exceeds the first preset water volume, and when it is determined that the water production of the first filter unit group exceeds the first preset water volume, determine that the first filter element component meets the first flushing condition; or,

[0136] It is determined whether the third water quality value of the first pure water outlet exceeds the third preset threshold value. When it is determined that the third water quality value exceeds the third preset threshold value, it is determined that the first filter element assembly meets the first flushing condition.

[0137] In the embodiment of the present invention, the determination of whether the first filter element assembly meets the first flushing condition may be achieved in a variety of ways. It can be judged by whether the water quality value detected by the water quality detection device of the first wastewater outlet exceeds the preset threshold value during water production. When the water quality value of the first wastewater outlet detected exceeds the preset threshold value, it can be determined that the first filter element assembly needs to be flushed; it can also be judged by whether the water quality value of the first filter element inlet exceeds the preset threshold value during water production. If the water quality value of the first filter element inlet is too poor, it will pollute the first filter element assembly and it needs to be flushed; it can also be judged by the time difference between the current time point and the time point when the last flushing of the first filter element assembly is completed. When the time difference exceeds the preset time, it means that the working time of the first filter element assembly is long and it needs to be flushed; for the same reason, it can also be judged by judging whether the working time of the first filter unit group exceeds the preset time; it can also be judged by whether the water production of the first filter unit group exceeds the preset water volume. The higher the water production volume, the more flushing is needed; in addition, it can also be judged by whether the water quality value of the first pure water outlet exceeds the threshold value. When the water quality value of the first pure water outlet is high, it means that the salinity of the pure water side of the first filter element assembly is too high and it needs to be flushed.

[0138] It can be seen that the method described in the embodiment of the present invention can provide a water purifier control method for a filter unit group connected in series, improve the flushing effect and efficiency of the filter unit group, and also propose a variety of methods for detecting whether the filter element meets the flushing conditions, which can more accurately monitor the use of the filter element to achieve accurate flushing of the filter element, avoid unnecessary flushing operations, further improve the filter element flushing effect, and increase the water production rate of the water purifier.

[0139] In yet another optional embodiment, the method controls the second filter unit group to perform a first flushing operation on the first filter element assembly, which may include the following operations:

[0140] When the first stage of flushing is being performed, the second branch is controlled to perform a closing operation;

[0141] Determining a first adjustment parameter of the wastewater return branch according to a preset control mode;

[0142] According to the first adjustment parameter of the wastewater return branch, the wastewater return branch is controlled to perform a first wastewater return operation, wherein the first wastewater return operation is used to control the wastewater discharged from the second wastewater outlet to return to the boosting device during the first stage of flushing and then be input into the second filter unit group;

[0143] The pure water discharged from the second pure water outlet is input into the first filter unit group through the first branch to flush the first filter element assembly.

[0144] In an embodiment of the present invention, when performing the first flushing operation on the first filter element assembly, it is first necessary to control the second branch to be closed to avoid secondary pollution caused by the input of wastewater generated by the second filter unit group. Furthermore, preferably, according to a preset control mode, the first adjustment parameter of the wastewater reflux branch is determined, and the wastewater reflux branch is controlled to perform the first wastewater reflux operation, specifically, the wastewater discharged from the second wastewater outlet is controlled to flow back to the second filter unit group during the first stage of flushing, and part or all of the wastewater is recycled and reused. At the same time, the pure water discharged from the second pure water outlet is controlled to be input into the first filter unit group through the first branch to flush the first filter element assembly.

[0145] It can be seen that the method described in the embodiment of the present invention can provide a control method for a water purifier with a filter unit group connected in series, thereby improving the flushing effect and efficiency of the filter unit group. At the same time, a control mechanism combining pure water and wastewater circulation is proposed to effectively flush the water purifier and recycle the waste water, thereby saving water resources and further improving the water production rate of the water purifier.

[0146] In yet another optional embodiment, the method determines the first adjustment parameter of the wastewater return branch according to the preset control mode, which may include the following operations:

[0147] According to the preset control mode, the first adjustment parameter of the wastewater return branch is determined, and the first adjustment parameter includes a first adjustment time, a second adjustment time, and a third adjustment time; the first adjustment time is used to indicate the duration of controlling all wastewater discharged from the second wastewater outlet to flow back to the second filter unit group during the first stage of flushing; the second adjustment time is used to indicate the duration of controlling the wastewater discharged from the second wastewater outlet to flow back to the second filter unit group in a matching proportion during the first stage of flushing; the third adjustment time is used to indicate the duration of controlling the closure of the wastewater branch; or,

[0148] According to the preset control mode, the relationship between the real-time water quality value of the second wastewater outlet and the first flushing water quality threshold and the second flushing water quality threshold during the first stage of flushing is determined; wherein the first flushing water quality threshold is less than the second flushing water quality threshold;

[0149] When it is determined that the real-time water quality value of the second wastewater outlet is less than or equal to the first flushing water quality threshold, a first adjustment parameter of the wastewater return branch is determined, and the first adjustment parameter is specifically used to control all wastewater discharged from the second wastewater outlet during the first stage of flushing to flow back to the second filter unit group through the wastewater return branch;

[0150] When it is determined that the real-time water quality value of the second wastewater outlet is less than the second flushing water quality threshold and greater than the first flushing water quality threshold, a first adjustment parameter of the wastewater return branch is determined, and the first adjustment parameter is specifically used to control the wastewater discharged from the second wastewater outlet during the first stage of flushing to flow back to the second filter unit group through the wastewater return branch in a matching proportion;

[0151] When it is determined that the real-time water quality value of the second wastewater outlet is greater than or equal to the second flushing water quality threshold, the first adjustment parameter of the wastewater return branch is determined. The first adjustment parameter is specifically used to control the closure of the wastewater return branch during the first stage of flushing.

[0152] In the embodiment of the present invention, the preset control mode may be a time mode, a water quality module, or a mixture of a time mode and a water quality mode, which is not limited in the embodiment of the present invention.

[0153] Among them, the time mode can achieve the user's water collection purpose by presetting the working time of each control stage of the water purifier and controlling the start time and end time of each stage of work. As the second filter unit group performs the flushing operation on the first filter unit group, the water quality of the wastewater discharged from the wastewater outlet of the second filter unit group gradually deteriorates due to the gradual increase in working time, and then the reuse degree of the wastewater discharged from the second wastewater outlet can be adjusted by stage control. Specifically, the first adjustment parameter of the wastewater return branch is determined, and the first adjustment parameter includes the first adjustment time, the second adjustment time, and the third adjustment time; the first adjustment time is used to indicate the duration of controlling all the wastewater discharged from the second wastewater outlet to flow back to the second filter unit group during the first stage of flushing; the second adjustment time is used to indicate the duration of controlling the wastewater discharged from the second wastewater outlet to flow back to the second filter unit group in a matching proportion during the first stage of flushing; the third control time is used to indicate the duration of controlling the closure of the wastewater branch.

[0154] Among them, the water quality mode can be achieved by monitoring the real-time water quality value (for example, TDS, alkalinity, hardness, etc., which are not limited in the embodiment of the present invention) at the second wastewater outlet of the second filter unit group during the first stage flushing process, and then determining the first adjustment parameter of the wastewater return branch based on the real-time water quality value.

[0155] Specifically, by monitoring the real-time water quality value of the second wastewater outlet, the water volume of the wastewater discharge branch and the wastewater return branch can be dynamically adjusted according to the real-time water quality value, so as to achieve the optimal flushing effect while saving water. In the embodiment of the present invention, two flushing water quality thresholds are set: a first flushing water quality threshold and a second flushing water quality threshold, wherein the first flushing water quality threshold is less than the second flushing water quality threshold. When it is determined that the real-time water quality value is less than or equal to the first flushing water quality threshold, it means that this is the initial stage of flushing, and all the wastewater discharged from the second wastewater outlet can be returned for use. As the flushing process progresses, the salt content in the second filter element assembly becomes more and more due to water production, and the real-time water quality value of the second wastewater outlet gradually increases. When the real-time water quality value is monitored to be greater than the first flushing water quality threshold and less than the second flushing water quality threshold, the wastewater can be refluxed through the wastewater return branch for reuse. At this time, the first adjustment parameter of the wastewater return branch is adjusted to return the wastewater discharged from the second wastewater outlet to the booster device in a matching proportion and then input into the second filter element water inlet, that is, to control the wastewater return branch to gradually reduce the amount of wastewater return water and the wastewater discharge branch to gradually increase the amount of wastewater discharge water. The specific proportional relationship can be adjusted according to actual conditions and is not limited in the embodiments of the present invention. As the flushing process continues to advance, the real-time water quality value of the water discharged from the second wastewater outlet is higher. At this time, the wastewater is not convenient for reflux and reuse. At this time, the first adjustment parameter of the wastewater circuit branch is adjusted to control the wastewater return branch to be completely closed and the wastewater discharge branch to be completely opened, so that all the wastewater generated at this time is discharged.

[0156] It can be seen that the method described in the embodiment of the present invention can provide a control method for a water purifier with a filter unit group connected in series, thereby improving the flushing effect and efficiency of the filter unit group. At the same time, through a variety of control methods, the accurate connection nodes and processes between each stage can be accurately controlled, thereby improving the control accuracy during the filter element flushing process, thereby achieving accurate flushing of the filter element, avoiding unnecessary flushing operations, further improving the filter element flushing effect, and improving the water production rate of the water purifier.

[0157] In yet another optional embodiment, the method for determining whether the second filter element assembly meets the second flushing condition may include the following operations:

[0158] Determine whether the duration of the first flushing operation exceeds a third preset duration, and when it is determined that the duration of the first flushing operation exceeds the third preset duration, determine that the second filter element assembly meets the second flushing condition; or,

[0159] Determine whether the fourth water quality value of the second wastewater outlet exceeds the fourth preset threshold value, and when it is determined that the fourth water quality value exceeds the fourth preset threshold value, determine that the second filter element assembly meets the second flushing condition; or,

[0160] Determine whether the fifth water quality value of the water inlet of the second filter element exceeds the fifth preset threshold value, and when it is determined that the fifth water quality value exceeds the fifth preset threshold value, determine that the second filter element assembly meets the second flushing condition; or,

[0161] Determine whether the time difference between the current time point and the time point when the second filter element component was most recently flushed exceeds a fourth preset time length. When it is determined that the time difference between the current time point and the time point when the second filter element component was most recently flushed exceeds the fourth preset time length, determine that the second filter element component meets the second flushing condition; or,

[0162] Determine whether the working time of the second filter unit group exceeds the fifth preset time, and when it is determined that the working time of the second filter unit group exceeds the fifth preset time, determine that the second filter element assembly meets the second flushing condition; or,

[0163] Determine whether the water production of the second filter unit group exceeds the second preset water volume, and when it is determined that the water production of the second filter unit group exceeds the second preset water volume, determine that the second filter element assembly meets the second flushing condition; or,

[0164] It is determined whether the sixth water quality value of the second pure water outlet exceeds the sixth preset threshold value. When it is determined that the sixth water quality value exceeds the sixth preset threshold value, it is determined that the second filter element assembly meets the second flushing condition.

[0165] It can be seen that the method described in the embodiment of the present invention can provide a water purifier control method for a filter unit group connected in series, improve the flushing effect and efficiency of the filter unit group, and also propose a variety of methods for detecting whether the filter element meets the flushing conditions, which can more accurately monitor the use of the filter element to achieve accurate flushing of the filter element, avoid unnecessary flushing operations, further improve the filter element flushing effect, and increase the water production rate of the water purifier.

[0166] In yet another optional embodiment, the method controls the second filter unit group to perform a second flushing operation on the second filter element assembly, which may include the following operations:

[0167] When the second stage of flushing is performed, the first branch and the second branch are controlled to perform a closing operation;

[0168] The pure water reflux branch is controlled to perform a pure water reflux operation, which is used to return part or all of the pure water discharged from the second pure water outlet to the boosting device and then input it into the second filter unit group, so that it can be mixed with the raw water in the raw water branch to flush the second filter element assembly.

[0169] In the embodiment of the present invention, the specific method of the second flushing operation is: when performing the second flushing operation, the first branch and the second branch need to be closed first. Further, the second pure water outlet queue is controlled to return part or all of the pure water to the second filter unit group, so that it is mixed with the raw water of the raw water branch to flush the second filter element assembly. It should be noted that at this time, the second filter unit group performs a self-flushing operation.

[0170] It can be seen that the method described in the embodiment of the present invention provides a control method for a water purifier in which filter unit groups are connected in series, thereby improving the flushing effect and efficiency of the filter unit groups. Through the flushing operation between the filter unit groups and the self-flushing operation of the filter unit groups, the purpose of rapid flushing is achieved while saving water in the flushing process, further improving the flushing effect of the water purifier, increasing the water production rate of the water purifier, and avoiding excessively high concentrations of wastewater that affect the life of the filter element.

[0171] Embodiment 2

[0172] See also Figure 2 , Figure 2 This is another schematic diagram of a water purifier control process disclosed in an embodiment of the present invention. Figure 2 The described method can be applied to a water purifier control device, which can be an independent device (such as a water purifier) ​​or a server corresponding to the water purifier control device, which is not limited in the embodiments of the present invention. Figure 2 As shown, the water purifier control method may include the following operations:

[0173] 201. Determine whether the first filter element assembly meets the first flushing condition.

[0174] 202. When it is determined that the first filter element assembly meets the first flushing condition, control the second filter unit group to perform a first flushing operation on the first filter element assembly.

[0175] 203. Determine whether the second filter element assembly meets the second flushing condition.

[0176] 204. When it is determined that the second filter element assembly meets the second flushing condition, the first branch is controlled to perform a closing operation, and the second filter unit group is controlled to perform a second flushing operation on the second filter element assembly.

[0177] In the embodiment of the present invention, for other descriptions of step 201 to step 204, please refer to the detailed description of step 101 to step 104 in embodiment 1 respectively, and the embodiment of the present invention will not be repeated here.

[0178] 205. Determine a second adjustment parameter of the wastewater return branch according to a preset control mode; and control the wastewater return branch to perform a second wastewater return operation according to the second adjustment parameter of the wastewater return branch.

[0179] In an embodiment of the present invention, when performing the second stage of flushing operation, the second filter element unit group is only flushed with a mixture of pure water and raw water. At this time, in order to further improve the recycling efficiency of wastewater, the second adjustment parameter of the wastewater branch can be determined according to the preset control mode, and then the wastewater return branch is controlled to perform the second wastewater return operation according to the second adjustment parameter, wherein the second wastewater operation is used to control the wastewater discharged from the second wastewater outlet to return to the second filter unit group, so that it is mixed with the raw water of the raw water branch and the pure water of the pure water return branch to perform the third stage of flushing the second filter element assembly.

[0180] It can be seen that the method described in the embodiment of the present invention can provide a control method for a water purifier with a filter unit group connected in series, thereby improving the flushing effect and efficiency of the filter unit group. At the same time, it also proposes another control mechanism that combines pure water and wastewater circulation to effectively flush the water purifier and recycle the waste water, thereby saving water resources and further improving the water production rate of the water purifier.

[0181] In the embodiment of the present invention, further optionally, determining the second adjustment parameter of the wastewater return branch according to the preset control mode may include the following operations:

[0182] According to the preset control mode, determining the adjustment time parameter of the wastewater return branch during the third stage of flushing, the adjustment time parameter is specifically used to control the duration of the wastewater discharged from the second wastewater outlet during the third stage of flushing back to the second filter unit group; or,

[0183] According to the preset control mode, determining the magnitude relationship between the real-time water quality value of the second wastewater outlet and the third flushing water quality threshold and the fourth flushing water quality threshold during the third stage of flushing; wherein the third flushing water quality threshold is greater than the fourth flushing water quality threshold;

[0184] According to the relationship between the real-time water quality value of the second wastewater outlet during the third stage of flushing and the third flushing water quality threshold and the fourth flushing water quality threshold, the second adjustment parameter of the wastewater return branch is determined; wherein the second adjustment parameter is used to control the wastewater return branch to perform the second wastewater return operation.

[0185] In an embodiment of the present invention, when the preset control mode is the time mode, as the second filter unit group performs the flushing operation on the second filter unit group by means of pure water reflux, the working time of the second filter unit group gradually increases, and the water quality of the wastewater discharged from its wastewater outlet gradually improves, and then the degree of reuse of the wastewater discharged from the second wastewater outlet can be adjusted by stage control.

[0186] Furthermore, when the preset control mode is the water quality mode, the real-time water quality value (for example, TDS, alkalinity, hardness, etc., not limited in the embodiment of the present invention) at the second wastewater outlet of the second filter unit group during the third stage of flushing can be monitored, and then the second adjustment parameter of the wastewater return branch can be determined according to the real-time water quality value. Specifically, by monitoring the real-time water quality value of the second wastewater outlet, the water volume of the wastewater discharge branch and the wastewater return branch can be dynamically adjusted according to the real-time water quality value, so as to achieve the optimal flushing effect while saving water. In the embodiment of the present invention, two flushing water quality thresholds are set: a third flushing water quality threshold and a fourth flushing water quality threshold, wherein the third flushing water quality threshold is greater than the fourth flushing water quality threshold. As the flushing process progresses, the salt content in the second filter element assembly becomes less and less due to flushing, and the real-time water quality value of the second wastewater outlet gradually decreases. When the real-time water quality value is monitored to be greater than the fourth flushing water quality threshold and less than the third flushing water quality threshold, the wastewater can be refluxed through the wastewater reflux branch for reuse. At this time, the second adjustment parameter of the wastewater reflux branch is adjusted to return the wastewater discharged from the second wastewater outlet to the booster device in a matching proportion and then input into the second filter element water inlet, that is, to control the wastewater reflux branch to gradually increase the wastewater reflux water volume and the wastewater discharge branch to gradually reduce the wastewater discharge water volume. The specific proportional relationship can be adjusted according to actual conditions and is not limited in the embodiments of the present invention. When it is determined that the real-time water quality value is less than or equal to the fourth flushing water quality threshold, it means that the flushing has reached a stable stage and all the wastewater discharged from the second wastewater outlet can be refluxed for reuse.

[0187] It can be seen that the method described in the embodiment of the present invention can provide a control method for a water purifier with a filter unit group connected in series, thereby improving the flushing effect and efficiency of the filter unit group. At the same time, it can also accurately control the accurate connection nodes and processes between each stage through a variety of control methods, thereby improving the control accuracy during the filter element flushing process, thereby achieving accurate flushing of the filter element, avoiding unnecessary flushing operations, further improving the filter element flushing effect, and improving the water production rate of the water purifier.

[0188] 206. When it is determined that the first flushing operation and the second flushing operation have been completed and a water taking instruction is received, the water production branch is controlled to perform a water production operation.

[0189] In the embodiment of the present invention, the method may further include the following operations:

[0190] Determining whether the first flushing operation and the second flushing operation have been completed;

[0191] When it is determined that the first flushing operation and the second flushing operation have been completed, determining whether a water taking instruction has been received;

[0192] When it is determined that a water intake instruction has been received, the water production branch is controlled to perform a water production operation;

[0193] Among them, controlling the water production branch to perform water production operations includes:

[0194] Controlling the raw water of the raw water branch to be input to the water inlet of the second filter element through the booster device to control the second filter unit group to perform the first water production operation;

[0195] The pure water reflux branch and the first branch are controlled to be closed, and at the same time, all wastewater discharged from the second wastewater outlet is controlled to be input into the first filter element water inlet through the second branch, so as to control the first filter unit group to perform the second water production operation.

[0196] It can be seen that the method described in the embodiment of the present invention can provide a control method for a water purifier with filter unit groups connected in series, thereby improving the flushing effect and efficiency of the filter unit groups. Through the flushing operation between the filter unit groups and the self-flushing operation of the filter unit groups, the purpose of rapid flushing can be achieved while saving water in the flushing process, further improving the flushing effect of the water purifier, increasing the water production rate of the water purifier, and avoiding excessively high concentrations of wastewater that affect the life of the filter element.

[0197] Embodiment 3

[0198] See also Figure 3 , Figure 3 Schematic diagram of a water purifier control device disclosed in an embodiment of the present invention. Figure 3 The device described can be an independent device (such as a water purifier) ​​or a server corresponding to the control device of the water purifier, which is not limited in the embodiment of the present invention. It should be noted that the water purifier control device refers to the steps in a water purifier control method described in Embodiment 1 and Embodiment 2, and the detailed description is not repeated in this embodiment. Figure 3 As shown, the water purifier control device may include:

[0199] The first judging module 301 is used to judge whether the first filter element component meets the first flushing condition;

[0200] The first flushing module 302 is used to control the second filter unit group to perform a first flushing operation on the first filter element assembly when the first judgment module 301 judges that the first filter element assembly meets the first flushing condition; the first flushing operation is used to input the pure water generated by the second filter unit group into the first filter unit group through the first branch to perform a first stage of flushing on the first filter element assembly;

[0201] The second judging module 303 is used to judge whether the second filter element assembly meets the second flushing condition;

[0202] The second flushing module 304 is used to control the first branch to perform a closing operation and control the second filter unit group to perform a second flushing operation on the second filter element assembly when the second judgment module determines that the second filter element assembly meets the second flushing condition; the second flushing operation is used to return the pure water generated by the second filter element group to the boosting device through the pure water reflux branch and then input it into the second filter unit group to perform a second stage of flushing on the second filter element assembly.

[0203] It can be seen that the device described in the embodiment of the present invention can provide a water purifier control method for a filter unit group connected in series, improve the flushing effect and efficiency of the filter unit group, and achieve the purpose of rapid flushing while saving water in the flushing process through the flushing operation between the filter unit groups and the self-flushing operation of the filter unit group, further improve the flushing effect of the water purifier, increase the water production rate of the water purifier, and avoid excessively high concentrations of wastewater affecting the life of the filter element.

[0204] In an optional embodiment, if Figure 4 As shown, the first judgment module 301 is specifically used for:

[0205] Determine whether the first water quality value of the first wastewater outlet exceeds the first preset threshold value, and when it is determined that the first water quality value exceeds the first preset threshold value, determine that the first filter element component meets the first flushing condition; or,

[0206] Determine whether the second water quality value of the first filter element water inlet exceeds the second preset threshold value, and when it is determined that the second water quality value exceeds the second preset threshold value, determine that the first filter element component meets the first flushing condition; or,

[0207] Determine whether the time difference between the current time point and the time point when the first filter element component was most recently flushed exceeds the first preset time length. When it is determined that the time difference between the current time point and the time point when the first filter element component was most recently flushed exceeds the first preset time length, determine that the first filter element component meets the first flushing condition; or,

[0208] Determine whether the working time of the first filter unit group exceeds the second preset time, and when it is determined that the working time of the first filter unit group exceeds the second preset time, determine that the first filter element assembly meets the first flushing condition; or,

[0209] Determine whether the water production of the first filter unit group exceeds the first preset water volume, and when it is determined that the water production of the first filter unit group exceeds the first preset water volume, determine that the first filter element component meets the first flushing condition; or,

[0210] It is determined whether the third water quality value of the first pure water outlet exceeds the third preset threshold value. When it is determined that the third water quality value exceeds the third preset threshold value, it is determined that the first filter element assembly meets the first flushing condition.

[0211] It can be seen that the implementation Figure 4 The described device can provide a control method for a water purifier with a filter unit group connected in series, thereby improving the flushing effect and efficiency of the filter unit group. At the same time, it also proposes a variety of methods for detecting whether the filter element meets the flushing conditions, which can more accurately monitor the use of the filter element to achieve accurate flushing of the filter element, avoid unnecessary flushing operations, further improve the filter element flushing effect, and increase the water production rate of the water purifier.

[0212] In another optional embodiment, Figure 4 As shown, the first flushing module 302 may include:

[0213] The first control submodule 3021 is used to control the second branch to perform a closing operation when performing the first stage of flushing;

[0214] A first determination submodule 3022, used to determine a first adjustment parameter of the wastewater return branch according to a preset control mode;

[0215] The second control submodule 3023 is used to control the wastewater return branch to perform a first wastewater return operation according to a first adjustment parameter of the wastewater return branch, wherein the first wastewater return operation is used to control the wastewater discharged from the second wastewater outlet to return to the boosting device during the first stage of flushing and then be input into the second filter unit group;

[0216] The first flushing submodule 3024 is used to input the pure water discharged from the second pure water outlet into the first filter unit group through the first branch to flush the first filter element assembly.

[0217] It can be seen that the implementation Figure 4 The described device can also provide a control method for a water purifier with a filter unit group connected in series, thereby improving the flushing effect and efficiency of the filter unit group. At the same time, a control mechanism combining pure water and wastewater circulation is proposed to effectively flush the water purifier and recycle the waste water, thereby saving water resources and further improving the water production rate of the water purifier.

[0218] In yet another optional embodiment, Figure 4 As shown, the first determining submodule 3022 is specifically used for:

[0219] According to the preset control mode, the first adjustment parameter of the wastewater return branch is determined, and the first adjustment parameter includes a first adjustment time, a second adjustment time, and a third adjustment time; the first adjustment time is used to indicate the duration of controlling all wastewater discharged from the second wastewater outlet to flow back to the second filter unit group during the first stage of flushing; the second adjustment time is used to indicate the duration of controlling the wastewater discharged from the second wastewater outlet to flow back to the second filter unit group in a matching proportion during the first stage of flushing; the third adjustment time is used to indicate the duration of controlling the closure of the wastewater branch; or,

[0220] According to the preset control mode, the relationship between the real-time water quality value of the second wastewater outlet and the first flushing water quality threshold and the second flushing water quality threshold during the first stage of flushing is determined; wherein the first flushing water quality threshold is less than the second flushing water quality threshold;

[0221] When it is determined that the real-time water quality value of the second wastewater outlet is less than or equal to the first flushing water quality threshold, a first adjustment parameter of the wastewater return branch is determined, and the first adjustment parameter is specifically used to control all wastewater discharged from the second wastewater outlet during the first stage of flushing to flow back to the second filter unit group through the wastewater return branch;

[0222] When it is determined that the real-time water quality value of the second wastewater outlet is less than the second flushing water quality threshold and greater than the first flushing water quality threshold, a first adjustment parameter of the wastewater return branch is determined, and the first adjustment parameter is specifically used to control the wastewater discharged from the second wastewater outlet during the first stage of flushing to flow back to the second filter unit group through the wastewater return branch in a matching proportion;

[0223] When it is determined that the real-time water quality value of the second wastewater outlet is greater than or equal to the second flushing water quality threshold, the first adjustment parameter of the wastewater return branch is determined. The first adjustment parameter is specifically used to control the closure of the wastewater return branch during the first stage of flushing.

[0224] It can be seen that implementation Figure 4 The described device can also provide a control method for a water purifier with a filter unit group connected in series, thereby improving the flushing effect and efficiency of the filter unit group. At the same time, through a variety of control methods, the accurate connection nodes and processes between each stage can be accurately controlled, thereby improving the control accuracy during the filter element flushing process, thereby achieving accurate flushing of the filter element, avoiding unnecessary flushing operations, further improving the filter element flushing effect, and increasing the water production rate of the water purifier.

[0225] In yet another optional embodiment, Figure 4 As shown, the second judgment module 303 is specifically used for:

[0226] Determine whether the duration of the first flushing operation exceeds a third preset duration, and when it is determined that the duration of the first flushing operation exceeds the third preset duration, determine that the second filter element assembly meets the second flushing condition; or,

[0227] Determine whether the fourth water quality value of the second wastewater outlet exceeds the fourth preset threshold value, and when it is determined that the fourth water quality value exceeds the fourth preset threshold value, determine that the second filter element assembly meets the second flushing condition; or,

[0228] Determine whether the fifth water quality value of the water inlet of the second filter element exceeds the fifth preset threshold value, and when it is determined that the fifth water quality value exceeds the fifth preset threshold value, determine that the second filter element assembly meets the second flushing condition; or,

[0229] Determine whether the time difference between the current time point and the time point when the second filter element component was most recently flushed exceeds a fourth preset time length. When it is determined that the time difference between the current time point and the time point when the second filter element component was most recently flushed exceeds the fourth preset time length, determine that the second filter element component meets the second flushing condition; or,

[0230] Determine whether the working time of the second filter unit group exceeds the fifth preset time, and when it is determined that the working time of the second filter unit group exceeds the fifth preset time, determine that the second filter element assembly meets the second flushing condition; or,

[0231] Determine whether the water production of the second filter unit group exceeds the second preset water volume, and when it is determined that the water production of the second filter unit group exceeds the second preset water volume, determine that the second filter element assembly meets the second flushing condition; or,

[0232] It is determined whether the sixth water quality value of the second pure water outlet exceeds the sixth preset threshold value. When it is determined that the sixth water quality value exceeds the sixth preset threshold value, it is determined that the second filter element assembly meets the second flushing condition.

[0233] It can be seen that the implementation Figure 4 The described device can also provide a control method for a water purifier with a filter unit group connected in series, thereby improving the flushing effect and efficiency of the filter unit group. At the same time, it also proposes a variety of methods for detecting whether the filter element meets the flushing conditions, which can more accurately monitor the use of the filter element to achieve accurate flushing of the filter element, avoid unnecessary flushing operations, further improve the filter element flushing effect, and increase the water production rate of the water purifier.

[0234] In yet another optional embodiment, Figure 4 As shown, the second flushing module 304 may include:

[0235] The third control submodule 3041 is used to control the first branch and the second branch to perform a closing operation when performing the second stage of flushing;

[0236] The second flushing submodule 3042 is used to control the pure water reflux branch to perform a pure water reflux operation. The pure water reflux operation is used to return part or all of the pure water discharged from the second pure water outlet to the boosting device and then input it into the second filter unit group to mix it with the raw water in the raw water branch to flush the second filter element assembly.

[0237] It can be seen that the implementation Figure 4The described device can also provide a control method for a water purifier with filter unit groups connected in series, thereby improving the flushing effect and efficiency of the filter unit groups. Through the flushing operation between the filter unit groups and the self-flushing operation of the filter unit groups, the purpose of rapid flushing can be achieved while saving water in the flushing process, further improving the flushing effect of the water purifier, increasing the water production rate of the water purifier, and avoiding excessively high concentrations of wastewater that affect the life of the filter element.

[0238] In yet another optional embodiment, Figure 4 As shown, the device may also include:

[0239] The determination module 305 is used to determine the second adjustment parameter of the wastewater return branch according to the preset control mode after the second flushing module 304 completes the second stage of flushing;

[0240] The third flushing module 306 is used to control the wastewater return branch to perform the second wastewater return operation according to the second adjustment parameter of the wastewater return branch. The second wastewater return operation is used to control the wastewater discharged from the second wastewater outlet to return to the booster device and then enter the second filter unit group, so that it is mixed with the raw water of the raw water branch and the pure water returned by the pure water branch to perform the third stage of flushing the filter element.

[0241] It can be seen that the implementation Figure 4 The described device can also provide a control method for a water purifier with a filter unit group connected in series, thereby improving the flushing effect and efficiency of the filter unit group. At the same time, another control mechanism combining pure water and wastewater circulation is proposed to effectively flush the water purifier and recycle the waste water, thereby saving water resources and further improving the water production rate of the water purifier.

[0242] In this optional embodiment, the determination module 305 is specifically used to:

[0243] According to the preset control mode, determining the adjustment time parameter of the wastewater return branch during the third stage of flushing, the adjustment time parameter is specifically used to control the duration of the wastewater discharged from the second wastewater outlet during the third stage of flushing back to the second filter unit group; or,

[0244] According to the preset control mode, determining the magnitude relationship between the real-time water quality value of the second wastewater outlet and the third flushing water quality threshold and the fourth flushing water quality threshold during the third stage of flushing; wherein the third flushing water quality threshold is greater than the fourth flushing water quality threshold;

[0245] According to the relationship between the real-time water quality value of the second wastewater outlet during the third stage of flushing and the third flushing water quality threshold and the fourth flushing water quality threshold, the second adjustment parameter of the wastewater return branch is determined; wherein the second adjustment parameter is used to control the wastewater return branch to perform the second wastewater return operation.

[0246] It can be seen that implementation Figure 4 The described device can also provide a control method for a water purifier with a filter unit group connected in series, thereby improving the flushing effect and efficiency of the filter unit group. At the same time, it can also accurately control the accurate connection nodes and processes between each stage through a variety of control methods, thereby improving the control accuracy during the filter element flushing process, thereby achieving accurate flushing of the filter element, avoiding unnecessary flushing operations, further improving the filter element flushing effect, and increasing the water production rate of the water purifier.

[0247] In yet another optional embodiment, Figure 4 As shown, the device may also include:

[0248] The third judging module 307 is used to judge whether the first flushing operation and the second flushing operation and / or the third stage of flushing have been completed;

[0249] The third judgment module 307 is further used to judge whether a water taking instruction is received when the third judgment module 307 judges that the first flushing operation and the second flushing operation and / or the third stage of flushing are completed;

[0250] The water production module 308 is used to control the water production branch to perform water production operation when the third judgment module 307 determines that a water intake instruction is received;

[0251] The water production module 308 is specifically used for:

[0252] Controlling the raw water of the raw water branch to be input to the water inlet of the second filter element through the booster device to control the second filter unit group to perform the first water production operation;

[0253] The pure water reflux branch and the first branch are controlled to be closed, and at the same time, all wastewater discharged from the second wastewater outlet is controlled to be input into the first filter element water inlet through the second branch, so as to control the first filter unit group to perform the second water production operation.

[0254] It can be seen that implementation Figure 4 The described device can also provide a control method for a water purifier with filter unit groups connected in series, thereby improving the flushing effect and efficiency of the filter unit groups. Through the flushing operation between the filter unit groups and the self-flushing operation of the filter unit groups, the purpose of rapid flushing can be achieved while saving water in the flushing process, further improving the flushing effect of the water purifier, increasing the water production rate of the water purifier, and avoiding excessively high concentrations of wastewater that affect the life of the filter element.

[0255] Embodiment 4

[0256] See also Figure 5 , Figure 5 is a structural schematic diagram of another water purifier control device disclosed in an embodiment of the present invention. Figure 5The device described may be an independent device (such as a water purifier) ​​or a server corresponding to the control device of the water purifier, which is not limited in the embodiment of the present invention. Figure 5 As shown, the water purifier control device may include:

[0257] A memory 401 storing executable program codes;

[0258] a processor 402 coupled to the memory 401;

[0259] The processor 402 calls the executable program code stored in the memory 401 to execute part or all of the steps in the water purifier control method disclosed in the first or second embodiment of the present invention.

[0260] Embodiment 5

[0261] An embodiment of the present invention discloses a computer storage medium, which stores computer instructions. When the computer instructions are called, they are used to execute the steps in the water purifier control method disclosed in Embodiment 1 or Embodiment 2 of the present invention.

[0262] The device embodiments described above are only illustrative, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, i.e., they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative work.

[0263] Through the specific description of the above embodiments, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on such an understanding, the above technical solution can be essentially or partly contributed to the prior art in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, and the storage medium includes a read-only memory (ROM), a random access memory (RAM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electronically erasable rewritable read-only memory (EEPROM), a compact disc (CD-ROM) or other optical disc storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0264] It should be noted that the computer program code required for the operation of each part of this specification can be written in any one or more programming languages, including object-oriented programming languages ​​such as Java, Scala, Smalltalk, Eiffel, JADE, Emerald, C++, C#, VB.NET, Python, etc., conventional procedural programming languages ​​such as C language, Visual Basic, Fortran2003, Perl, COBOL 2002, PHP, ABAP, dynamic programming languages ​​such as Python, Ruby and Groovy, or other programming languages, etc. The program code can be run completely on a computer (PC, embedded intelligent device, etc.), or run on a user's computer as an independent software package, or run partly on a user's computer and partly on a remote computer, or run completely on a remote computer or server. In the latter case, the remote computer can be connected to the user's computer through any network form, such as a local area network (LAN) or a wide area network (WAN), or connected to an external computer (e.g., via the Internet), or in a cloud computing environment, or used as a service such as software as a service (SaaS).

[0265] Finally, it should be noted that the water purifier control method and device disclosed in the embodiment of the present invention only disclose the preferred embodiments of the present invention, which are only used to illustrate the technical solution of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water purifier control method, the water purifier comprising a raw water branch, a booster device, a water production branch, a wastewater discharge branch and a pure water discharge branch, characterized in that: The water production branch includes a first filter unit group and a second filter unit group, the first filter unit group includes a first filter element water inlet, a first filter element assembly, a first wastewater outlet, and a first pure water outlet, the second filter unit group includes a second filter element water inlet, a second filter element assembly, a second wastewater outlet, and a second pure water outlet, the raw water branch is connected to the second filter element water inlet, the second pure water outlet is connected to the first filter element water inlet through a first branch, the second wastewater outlet is connected to the first filter element water inlet through a second branch, the second pure water outlet is also connected to a pure water reflux branch, and the second wastewater outlet is also connected to a wastewater reflux branch, the method includes: Determining whether the first filter element assembly meets a first flushing condition; When it is determined that the first filter element assembly meets the first flushing condition, the second filter unit group is controlled to perform a first flushing operation on the first filter element assembly; the first flushing operation is used to input the pure water generated by the second filter unit group into the first filter unit group through the first branch to perform a first stage of flushing on the first filter element assembly; determining whether the second filter element assembly meets a second flushing condition; When it is determined that the second filter element assembly meets the second flushing condition, the first branch is controlled to perform a closing operation, and the second filter unit group is controlled to perform a second flushing operation on the second filter element assembly; the second flushing operation is used to return the pure water generated by the second filter element group to the boosting device through the pure water return branch and then input into the second filter unit group to perform a second stage of flushing on the second filter element assembly; Determining a second adjustment parameter of the wastewater return branch according to a preset control mode; According to the second adjustment parameter of the wastewater return branch, the wastewater return branch is controlled to perform a second wastewater return operation, wherein the second wastewater return operation is used to control the wastewater discharged from the second wastewater outlet to return to the boosting device and then be input into the second filter unit group for flushing in the third stage; Wherein, determining the second adjustment parameter of the wastewater return branch according to the preset control mode includes: According to a preset control mode, determining an adjustment time parameter of the wastewater return branch during the flushing of the third stage, wherein the adjustment time parameter is specifically used to control the duration of the wastewater discharged from the second wastewater outlet during the flushing of the third stage backflowing to the second filter unit group; or, According to the preset control mode, determining the magnitude relationship between the real-time water quality value of the second wastewater outlet and the third flushing water quality threshold and the fourth flushing water quality threshold during the third stage of flushing; wherein the third flushing water quality threshold is greater than the fourth flushing water quality threshold; The second adjustment parameter of the wastewater return branch is determined based on the relationship between the real-time water quality value of the second wastewater outlet and the third flushing water quality threshold and the fourth flushing water quality threshold during the third stage of flushing; the second adjustment parameter is used to control the wastewater return branch to perform the second wastewater return operation.

2. The water purifier control method according to claim 1, characterized in that: The determining whether the first filter element assembly meets the first flushing condition includes: Determine whether the first water quality value of the first wastewater outlet exceeds a first preset threshold value, and when it is determined that the first water quality value exceeds the first preset threshold value, determine that the first filter element component meets the first flushing condition; or, Determine whether a second water quality value of the first filter element water inlet exceeds a second preset threshold value, and when it is determined that the second water quality value exceeds the second preset threshold value, determine that the first filter element component meets the first flushing condition; or, Determine whether the time difference between the current time point and the time point when the first filter element component was most recently flushed exceeds a first preset time length. When it is determined that the time difference between the current time point and the time point when the first filter element component was most recently flushed exceeds the first preset time length, determine that the first filter element component meets the first flushing condition; or, Determine whether the working time of the first filter unit group exceeds a second preset time, and when it is determined that the working time of the first filter unit group exceeds the second preset time, determine that the first filter element assembly meets the first flushing condition; or, Determine whether the water production of the first filter unit group exceeds a first preset water volume, and when it is determined that the water production of the first filter unit group exceeds the first preset water volume, determine that the first filter element assembly meets the first flushing condition; or, It is determined whether the third water quality value of the first pure water outlet exceeds a third preset threshold value. When it is determined that the third water quality value exceeds the third preset threshold value, it is determined that the first filter element assembly meets the first flushing condition.

3. The water purifier control method according to claim 1 or 2, characterized in that: The controlling the second filter unit group to perform a first flushing operation on the first filter element assembly includes: When the flushing in the first stage is performed, controlling the second branch to perform a closing operation; According to a preset control mode, a first adjustment parameter of the wastewater return branch is determined; according to the first adjustment parameter of the wastewater return branch, the wastewater return branch is controlled to perform a first wastewater return operation, wherein the first wastewater return operation is used to control the wastewater discharged from the second wastewater outlet to return to the boosting device and then be input into the second filter unit group during the first stage of flushing; The pure water discharged from the second pure water outlet is input into the first filter unit group through the first branch to flush the first filter element assembly.

4. The water purifier control method according to claim 3, characterized in that: Determining the first adjustment parameter of the wastewater return branch according to the preset control mode includes: According to a preset control mode, a first adjustment parameter of the wastewater return branch is determined, the first adjustment parameter including a first adjustment duration, a second adjustment duration, and a third adjustment duration; the first adjustment duration is used to indicate the duration of controlling all wastewater discharged from the second wastewater outlet to flow back to the second filter unit group during the first stage of flushing; the second adjustment duration is used to indicate the duration of controlling the wastewater discharged from the second wastewater outlet to flow back to the second filter unit group in a matching proportion during the first stage of flushing; the third adjustment duration is used to indicate the duration of controlling the closure of the wastewater branch; or, According to the preset control mode, determining the magnitude relationship between the real-time water quality value of the second wastewater outlet and the first flushing water quality threshold and the second flushing water quality threshold during the first stage of flushing; wherein the first flushing water quality threshold is less than the second flushing water quality threshold; When it is determined that the real-time water quality value of the second wastewater outlet is less than or equal to the first flushing water quality threshold, determining a first adjustment parameter of the wastewater return branch, wherein the first adjustment parameter is specifically used to control all wastewater discharged from the second wastewater outlet during the first stage of flushing to flow back to the second filter unit group through the wastewater return branch; When it is determined that the real-time water quality value of the second wastewater outlet is less than the second flushing water quality threshold and greater than the first flushing water quality threshold, determining a first adjustment parameter of the wastewater return branch, wherein the first adjustment parameter is specifically used to control the wastewater discharged from the second wastewater outlet during the first stage of flushing to flow back to the second filter unit group through the wastewater return branch in a matching proportion; When it is determined that the real-time water quality value of the second wastewater outlet is greater than or equal to the second flushing water quality threshold, the first adjustment parameter of the wastewater return branch is determined. The first adjustment parameter is specifically used to control the closure of the wastewater return branch during the first stage of flushing.

5. The water purifier control method according to claim 1, characterized in that: The determining whether the second filter element assembly meets the second flushing condition includes: Determine whether the duration of the first flushing operation exceeds a third preset duration, and when it is determined that the duration of the first flushing operation exceeds the third preset duration, determine that the second filter element assembly meets the second flushing condition; or, Determine whether the fourth water quality value of the second wastewater outlet exceeds a fourth preset threshold value, and when it is determined that the fourth water quality value exceeds the fourth preset threshold value, determine that the second filter element assembly meets the second flushing condition; or, Determine whether the fifth water quality value of the water inlet of the second filter element exceeds the fifth preset threshold value, and when it is determined that the fifth water quality value exceeds the fifth preset threshold value, determine that the second filter element assembly meets the second flushing condition; or, Determine whether the time difference between the current time point and the time point when the second filter element component was most recently flushed exceeds a fourth preset time length. When it is determined that the time difference between the current time point and the time point when the second filter element component was most recently flushed exceeds the fourth preset time length, determine that the second filter element component meets the second flushing condition; or, Determine whether the working time of the second filter unit group exceeds a fifth preset time, and when it is determined that the working time of the second filter unit group exceeds the fifth preset time, determine that the second filter element assembly meets the second flushing condition; or, Determine whether the water production of the second filter unit group exceeds the second preset water volume, and when it is determined that the water production of the second filter unit group exceeds the second preset water volume, determine that the second filter element assembly meets the second flushing condition; or, It is determined whether the sixth water quality value of the second pure water outlet exceeds the sixth preset threshold value. When it is determined that the sixth water quality value exceeds the sixth preset threshold value, it is determined that the second filter element assembly meets the second flushing condition.

6. The water purifier control method according to claim 5, characterized in that: The controlling the second filter unit group to perform a second flushing operation on the second filter element assembly includes: When performing the second stage of flushing, controlling the first branch and the second branch to perform a closing operation; The pure water reflux branch is controlled to perform a pure water reflux operation, wherein the pure water reflux operation is used to return part or all of the pure water discharged from the second pure water outlet to the boosting device and then input it into the second filter unit group, so that it can be mixed with the raw water in the raw water branch to flush the second filter element assembly.

7. The water purifier control method according to any one of claims 1, 5 and 6, characterized in that: The method further comprises: Determining whether the first flushing operation and the second flushing operation are completed; When it is determined that the first flushing operation and the second flushing operation have been completed, determining whether a water fetching instruction has been received; When it is determined that the water intake instruction is received, controlling the water production branch to perform a water production operation; Wherein, controlling the water production branch to perform water production operation includes: Controlling the raw water of the raw water branch to be input to the water inlet of the second filter element through the boosting device, so as to control the second filter unit group to perform the first water production operation; The pure water reflux branch and the first branch are controlled to be closed, and at the same time, all wastewater discharged from the second wastewater outlet is controlled to be input into the first filter element water inlet through the second branch, so as to control the first filter unit group to perform the second water production operation.

8. A water purifier control device, the water purifier comprising a raw water branch, a booster, a water production branch, a wastewater discharge branch and a pure water discharge branch, characterized in that: The water production branch includes a first filter unit group and a second filter unit group, the first filter unit group includes a first filter element water inlet, a first filter element assembly, a first wastewater outlet, and a first pure water outlet, the second filter unit group includes a second filter element water inlet, a second filter element assembly, a second wastewater outlet, and a second pure water outlet, the raw water branch is connected to the second filter element water inlet, the second pure water outlet is connected to the first filter element water inlet through a first branch, the second wastewater outlet is connected to the first filter element water inlet through a second branch, the second pure water outlet is also connected to a pure water reflux branch, and the second wastewater outlet is also connected to a wastewater reflux branch, the device is used to execute the water purifier control method according to any one of claims 1 to 7, and the device includes: A first judging module, used to judge whether the first filter element assembly meets a first flushing condition; A first flushing module, used for controlling the second filter unit group to perform a first flushing operation on the first filter element assembly when the first judgment module determines that the first filter element assembly meets the first flushing condition; the first flushing operation is used for inputting the pure water generated by the second filter element group into the first filter element group through the first branch to perform a first stage of flushing on the first filter element assembly; A second judging module, used to judge whether the second filter element assembly meets a second flushing condition; The second flushing module is used to control the first branch to perform a closing operation and control the second filter unit group to perform a second flushing operation on the second filter element assembly when the second judgment module determines that the second filter element assembly meets the second flushing condition; the second flushing operation is used to return the pure water generated by the second filter element group to the boosting device through the pure water reflux branch and then input it into the second filter unit group to perform a second stage of flushing on the second filter element assembly.

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