CN116199304A

CN116199304A - Water purifier control method and device

Info

Publication number: CN116199304A
Application number: CN202111453910.1A
Authority: CN
Inventors: 陈小平; 晏博; 吕苏; 李大川
Original assignee: Guangdong Lizi Technology Co Ltd
Current assignee: Guangdong Lizi Technology Co Ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2023-06-02

Abstract

The invention discloses a control method and a device of a water purifier, wherein the water purifier comprises a raw water branch, a supercharging device, a water producing branch, a wastewater discharging branch and a pure water discharging branch, the water producing branch comprises a first filtering unit group and a second filtering unit group, and the method comprises the following steps: judging whether the first filter element assembly meets the first flushing condition, and controlling the second filter unit group to perform first flushing operation on the first filter element assembly when judging that the first flushing condition is met; and judging whether the second filter element assembly meets the second flushing condition, and controlling the second filter unit group to perform second flushing operation on the second filter element assembly when judging that the second flushing condition is met. Therefore, the invention can provide a control mode of the water purifier with the filter unit groups connected in series, improves the flushing effect and efficiency of the filter unit groups, and saves the water consumption in the flushing process while achieving the purpose of rapid flushing through the flushing operation among the filter unit groups and the self-flushing operation of the filter unit groups.

Description

Water purifier control method and device

Technical Field

The invention relates to the technical field of water purification, in particular to a control method and device of a water purifier.

Background

With the rapid development of water purification technology, water purifiers which filter through devices such as reverse osmosis pressure membranes and the like are becoming popular, but concentrated wastewater stays in the reverse osmosis membrane device all the time after long-time use, so that salt or other soluble solids are attached to the reverse osmosis pressure membranes, and the service life of the reverse osmosis pressure membranes is reduced. Therefore, the water purifier needs to be frequently washed.

In the practical application process, the wastewater side of the reverse osmosis pressure membrane is usually washed by filtered water or raw water and the washed water is directly discharged. However, the flushing method can lead to the water purifier to discharge more wastewater in the flushing process, thereby reducing the water production efficiency of the water purifier and wasting water resources.

Therefore, it is important to provide a water purifier and a control method for improving the washing and water producing efficiency.

Disclosure of Invention

The invention provides a control method and a control device for a water purifier, which can provide a control mode for the water purifier with serially connected filter unit groups, improve the flushing effect and efficiency of the filter unit groups, achieve the aim of rapid flushing and save the water consumption in the flushing process through the flushing operation among the filter unit groups and the self-flushing operation of the filter unit groups, further improve the filtering effect of the water purifier, ensure that the water produced by the water purifier is purer, and improve the cup water desalination rate of the water purifier head.

To solve the above technical problems, a first aspect of the present invention discloses a control method of a water purifier, the water purifier includes a raw water branch, a supercharging device, a water producing branch, a waste water discharging branch and a pure water discharging branch, the water producing 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 waste water 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 waste water outlet and a second pure water outlet, the raw water branch is connected with 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 waste water outlet is connected to the first filter element water inlet through a second branch, the second pure water outlet is also connected with a pure water reflux branch, and the second waste water outlet is also connected with a waste water reflux branch, the method includes:

judging whether the first filter element assembly meets a first flushing condition or not;

when the first filter element assembly is judged to meet the first flushing condition, controlling the second filter unit group to perform a first flushing operation on the first filter element assembly; the first flushing operation is used for inputting pure water generated by the second filter unit group into the first filter unit group through the first branch so as to flush the first filter element assembly in a first stage;

Judging whether the second filter element assembly meets a second flushing condition;

when the second filter element assembly is judged to meet the second flushing condition, the first branch is controlled to execute closing operation, and the second filter unit group is controlled to execute second flushing operation on the second filter element assembly; the second flushing operation is used for enabling pure water generated by the second filter unit group to flow back to the pressurizing device through the pure water backflow branch and then input into the second filter unit group so as to flush the second filter element assembly in a second stage.

In an optional implementation manner, in the first aspect of the present invention, the determining whether the first filter element assembly meets the first flushing condition includes:

judging whether a first water quality value of the first wastewater outlet exceeds a first preset threshold value, and determining that the first filter element assembly meets a first flushing condition when judging that the first water quality value exceeds the first preset threshold value; or alternatively, the process may be performed,

judging whether a second water quality value of a water inlet of the first filter element exceeds a second preset threshold value, and determining that the first filter element assembly meets a first flushing condition when judging that the second water quality value exceeds the second preset threshold value; or alternatively, the process may be performed,

Judging whether the time difference between the current time point and the time point when the first filter element assembly is finished in the last flushing exceeds a first preset duration, and determining that the first filter element assembly meets a first flushing condition when the time difference between the current time point and the time point when the first filter element assembly is finished in the last flushing exceeds the first preset duration; or alternatively, the process may be performed,

judging whether the working time length of the first filter unit group exceeds a second preset time length, and determining that the first filter element assembly meets a first flushing condition when judging that the working time length of the first filter unit group exceeds the second preset time length; or alternatively, the process may be performed,

judging whether the water production amount of the first filter unit group exceeds a first preset water amount, and determining that the first filter element assembly meets a first flushing condition when judging that the water production amount of the first filter unit group exceeds the first preset water amount; or alternatively, the process may be performed,

judging whether a third water quality value of the first pure water outlet exceeds a third preset threshold value, and determining that the first filter element assembly meets a first flushing condition when judging that the third water quality value exceeds the third preset threshold value.

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

controlling the second branch to execute closing operation when the flushing of the first stage is carried out;

determining a first adjustment parameter of the waste water reflux branch according to a preset control mode; controlling the waste water reflux branch to execute a first waste water reflux operation according to a first adjustment parameter of the waste water reflux branch, wherein the first waste water reflux operation is used for controlling waste water discharged by the second waste water outlet to reflux to the supercharging device when the waste water is washed in the first stage, and then inputting the waste water into the second filtering unit group;

and inputting the pure water discharged from the second pure water outlet to the first filter unit group through the first branch circuit so as to flush the first filter element assembly.

In an optional implementation manner, in a first aspect of the present invention, the determining, according to a preset control mode, a first adjustment parameter of the waste water recirculation branch includes:

determining a first adjustment parameter of the waste water reflux branch according to a preset control mode, wherein the first adjustment parameter comprises a first adjustment duration, a second adjustment duration and a third adjustment duration; the first adjustment duration is used for indicating duration of controlling all wastewater discharged by the second wastewater outlet to flow back to the second filtering unit group when the first-stage flushing is performed; the second adjustment duration is used for indicating the duration of controlling the waste water discharged from the second waste water outlet to flow back to the second filtering unit group according to the matched proportion when the waste water is washed in the first stage; the third adjustment time length is used for indicating the duration time for controlling the closing of the waste water branch; or alternatively, the process may be performed,

Judging the magnitude relation between the real-time water quality value of the second wastewater outlet and the first flushing water quality threshold value and the second flushing water quality threshold value when the flushing in the first stage is carried out according to a preset control mode; wherein the first flush water quality threshold is less than the second flush water quality threshold;

when the real-time water quality value of the second wastewater outlet is smaller than or equal to the first flushing water quality threshold value, determining a first adjustment parameter of the wastewater reflux branch, wherein the first adjustment parameter is specifically used for controlling all wastewater discharged by the second wastewater outlet during flushing in the first stage to reflux to the second filtering unit group through the wastewater reflux branch;

when the real-time water quality value of the second wastewater outlet is judged to be smaller than the second flushing water quality threshold and larger than the first flushing water quality threshold, determining a first adjustment parameter of the wastewater reflux branch, wherein the first adjustment parameter is specifically used for controlling wastewater discharged by the second wastewater outlet when flushing in the first stage to reflux to the second filtering unit group through the wastewater reflux branch according to a matched proportion;

when the real-time water quality value of the second wastewater outlet is larger than or equal to the second flushing water quality threshold, determining a first adjustment parameter of the wastewater reflux branch, wherein the first adjustment parameter is specifically used for controlling the wastewater reflux branch to be closed when flushing in the first stage is performed.

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

judging whether the duration of the first flushing operation exceeds a third preset duration, and determining that the second filter element assembly meets a second flushing condition when the duration of the first flushing operation exceeds the third preset duration; or alternatively, the process may be performed,

judging whether a fourth water quality value of the second wastewater outlet exceeds a fourth preset threshold value, and determining that the second filter element assembly meets a second flushing condition when judging that the fourth water quality value exceeds the fourth preset threshold value; or alternatively, the process may be performed,

judging whether a fifth water quality value of the water inlet of the second filter element exceeds a fifth preset threshold value, and determining that the second filter element assembly meets a second flushing condition when judging that the fifth water quality value exceeds the fifth preset threshold value; or alternatively, the process may be performed,

judging whether the time difference between the current time point and the time point when the second filter element assembly is finished in the last flushing exceeds a fourth preset duration, and determining that the second filter element assembly meets a second flushing condition when the time difference between the current time point and the time point when the second filter element assembly is finished in the last flushing exceeds the fourth preset duration; or alternatively, the process may be performed,

Judging whether the working time length of the second filter unit group exceeds a fifth preset time length, and determining that the second filter element assembly meets a second flushing condition when judging that the working time length of the second filter unit group exceeds the fifth preset time length; or alternatively, the process may be performed,

judging whether the water production amount of the second filtering unit group exceeds a second preset water amount, and determining that the second filter element assembly meets a second flushing condition when judging that the water production amount of the second filtering unit group exceeds the second preset water amount; or alternatively, the process may be performed,

judging whether a sixth water quality value of the second pure water outlet exceeds a sixth preset threshold, and determining that the second filter element assembly meets a second flushing condition when judging that the sixth water quality value exceeds the sixth preset threshold.

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

when the second-stage flushing is performed, the first branch and the second branch are controlled to execute closing operation;

and controlling the pure water backflow branch to execute pure water backflow operation, wherein the pure water backflow operation is used for partially or completely reflowing the pure water discharged from the second pure water outlet to the pressurizing device and inputting the pure water into the second filtering unit group so as to enable the pure water to be mixed with the raw water of the raw water branch to flush the second filter element assembly.

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

determining a second adjustment parameter of the waste water reflux branch according to the preset control mode;

and controlling the waste water reflux branch to execute a second waste water reflux operation according to a second adjustment parameter of the waste water reflux branch, wherein the second waste water reflux operation is used for controlling waste water discharged by the second waste water outlet to reflux to the pressurizing device and then inputting the waste water into the second filtering unit group so as to enable the waste water to be mixed with raw water of the raw water branch and pure water refluxed by the pure water branch to flush the second filter element assembly in a third stage.

As an optional implementation manner, in the first aspect of the present invention, the determining, according to the preset control mode, the second adjustment parameter of the waste water recirculation branch includes:

according to the preset control mode, determining an adjustment duration parameter of the waste water reflux branch when the third-stage flushing is performed, wherein the adjustment duration parameter is specifically used for controlling duration of the waste water discharged by the second waste water outlet when the third-stage flushing is performed to reflux the second filtering unit group; or alternatively, the process may be performed,

Judging the magnitude relation between the real-time water quality value of the second wastewater outlet, a third flushing water quality threshold value and a fourth flushing water quality threshold value when flushing in the third stage is carried out according to the preset control mode; wherein the third flush water quality threshold value is greater than the fourth flush water quality threshold value;

determining a second adjustment parameter of the waste water reflux branch according to the magnitude relation between the real-time water quality value of the second waste water outlet, the third flushing water quality threshold and the fourth flushing water quality threshold when flushing in the third stage is carried out; the second adjustment parameter is used for controlling the waste water backflow branch to execute a second waste water backflow operation.

As an alternative embodiment, in the first aspect of the present invention, the method further includes:

judging whether the first flushing operation and the second flushing operation are completed or not;

when the first flushing operation and the second flushing operation are judged to be finished, judging whether a water taking instruction is received or not;

when the water taking instruction is judged to be received, controlling the water producing branch to execute water producing operation;

wherein, control the water producing branch road to carry out the water making operation, include:

The raw water of the raw water branch is controlled to be input to the water inlet of the second filter element through the supercharging device so as to control the second filter unit group to perform a first water making operation;

and controlling the pure water backflow branch and the first branch to be closed, and simultaneously controlling all wastewater discharged by the second wastewater outlet to be input to the water inlet of the first filter element through the second branch so as to control the first filter unit group to perform second water making operation.

The invention discloses a control device of a water purifier in a second aspect, the water purifier comprises a raw water branch, a supercharging device, a water producing branch, a waste water discharging branch and a pure water discharging branch, the water producing 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 waste water 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 waste water outlet and a second pure water outlet, the raw water branch is connected with 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 waste water outlet is connected to the first filter element water inlet through a second branch, the second pure water outlet is also connected with a pure water reflux branch, and the second waste water outlet is also connected with a waste water reflux branch, the device comprises:

The first judging module is used for judging whether the first filter element assembly meets a first flushing condition or not;

the first flushing module is used for controlling the second filter unit group to perform a first flushing operation on the first filter element assembly when the first judging module judges that the first filter element assembly meets the first flushing condition; the first flushing operation is used for inputting pure water generated by the second filter unit group into the first filter unit group through the first branch so as to flush the first filter element assembly in a first stage;

the second judging module is used for judging whether the second filter element assembly meets a second flushing condition or not;

the second flushing module is used for controlling the first branch to execute closing operation and controlling the second filtering unit group to execute second flushing operation on the second filter element assembly when the second judging module judges that the second filter element assembly meets the second flushing condition; the second flushing operation is used for enabling pure water generated by the second filter unit group to flow back to the pressurizing device through the pure water backflow branch and then input into the second filter unit group so as to flush the second filter element assembly in a second stage.

In a second aspect of the present invention, as an optional implementation manner, the first determining module is specifically configured to:

As an alternative embodiment, in a second aspect of the present invention, the first flushing module includes:

the first control sub-module is used for controlling the second branch to execute closing operation when the flushing of the first stage is carried out;

the first determining submodule is used for determining a first adjusting parameter of the waste water backflow branch according to a preset control mode;

the second control submodule is used for controlling the waste water backflow branch to execute a first waste water backflow operation according to the first adjustment parameter of the waste water backflow branch, and the first waste water backflow operation is used for controlling waste water discharged by the second waste water outlet to flow back to the supercharging device and then be input into the second filter unit group when the waste water is washed in the first stage;

And the first flushing submodule is used for inputting the pure water discharged from the second pure water outlet to the first filter unit group through the first branch so as to flush the first filter element assembly.

As an alternative embodiment, in the second aspect of the present invention, the first determining sub-module is specifically configured to:

As an optional implementation manner, in the second aspect of the present invention, the second judging module is specifically configured to:

As an alternative embodiment, in a second aspect of the present invention, the second flushing module includes:

the third control sub-module is used for controlling the first branch and the second branch to execute closing operation when the second stage flushing is carried out;

and the second flushing submodule is used for controlling the pure water backflow branch to execute pure water backflow operation, and the pure water backflow operation is used for partially or completely reflowing the pure water discharged by the second pure water outlet to the supercharging device and inputting the pure water into the second filtering unit group so as to enable the pure water to be mixed with the raw water of the raw water branch to flush the second filter element assembly.

As an alternative embodiment, in the second aspect of the present invention, the apparatus further includes:

the determining module is used for determining a second adjusting parameter of the waste water backflow branch according to the preset control mode;

and the third flushing module is used for controlling the waste water backflow branch to execute a second waste water backflow operation according to a second adjustment parameter of the waste water backflow branch, and the second waste water backflow operation is used for controlling waste water discharged by the second waste water outlet to flow back to the supercharging device and then input into the second filtering unit group so as to enable the waste water to be mixed with raw water of the raw water branch and pure water flowing back by the pure water branch to flush the filter element in a third stage.

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

a third judging module for judging whether the first flushing operation and the second flushing operation are completed;

the third judging module is further configured to judge whether a water intake instruction is received when the third judging module judges that the first flushing operation and the second flushing operation are completed;

the water producing module is used for controlling the water producing branch to execute water producing operation when the third judging module judges that the water taking instruction is received;

Wherein, the water making module is specifically used for:

In a third aspect, the present invention discloses another control device for a water purifier, the device comprising:

a memory storing executable program code;

a processor coupled to the memory;

the processor invokes the executable program code stored in the memory to perform part or all of the steps in any one of the water purifier control methods disclosed in the first aspect of the present invention.

A fourth aspect of the present invention discloses a computer storage medium storing computer instructions for executing part or all of the steps of any one of the water purifier control methods disclosed in the first aspect of the present invention when the computer instructions are called.

Compared with the prior art, the invention has the following beneficial effects:

the invention discloses a control method and a device of a water purifier, wherein the water purifier comprises a raw water branch, a supercharging device, a water producing branch, a waste water discharging branch and a pure water discharging branch, the water producing branch comprises a first filtering unit group and a second filtering unit group, and the method comprises the following steps: judging whether the first filter element assembly meets the first flushing condition, and controlling the second filter unit group to perform first flushing operation on the first filter element assembly when judging that the first flushing condition is met; and judging whether the second filter element assembly meets the second flushing condition, and controlling the second filter unit group to perform second flushing operation on the second filter element assembly when judging that the second flushing condition is met. Therefore, the invention can provide a control mode of the water purifier with the filter unit groups connected in series, so that the flushing effect and efficiency of the filter unit groups are improved, the water consumption in the flushing process is saved while the aim of rapid flushing is achieved through the flushing operation among the filter unit groups and the self-flushing operation of the filter unit groups, the filtering effect of the water purifier is further improved, the water produced by the water purifier is purer, and the water desalination rate of the cup water of the water purifier head is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic flow chart of a control method of a water purifier according to an embodiment of the present invention;

FIG. 2 is a schematic flow chart of another control method of a water purifier according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a control device for a water purifier according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of another control device of a water purifier according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a control device of a water purifier according to an embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, apparatus, article, or article that comprises a list of steps or elements is not limited to only those listed but may optionally include other steps or elements not listed or inherent to such process, method, article, or article.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The invention discloses a control method and a control device of a water purifier, which can provide a control mode of the water purifier with serially connected filter unit groups, improve the flushing effect and efficiency of the filter unit groups, achieve the aim of rapid flushing and save the water consumption in the flushing process by the flushing operation among the filter unit groups and the self-flushing operation of the filter unit groups, further improve the filtering effect of the water purifier, ensure that the water produced by the water purifier is purer, and improve the cup water desalination rate of the water purifier head. The following will explain in detail.

Example 1

Referring to fig. 1, fig. 1 is a flow chart of a control method of a water purifier according to an embodiment of the invention. The method described in fig. 1 may be applied to a water purifier control device, where the water purifier control device may be an independent device (such as a water purifying apparatus), or may be a server corresponding to a control device of a water purifier. As shown in fig. 1, the water purifier control method may include the following operations:

in the embodiment of the invention, the water purifier comprises a raw water branch, a supercharging device, a water producing branch, a wastewater discharging branch and a pure water discharging branch, wherein the water producing 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 with 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 with a pure water reflux branch, and the second wastewater outlet is also connected with the wastewater reflux branch. In addition, the pure water reflux branch is connected with the raw water branch and the second pure water outlet, and the waste water reflux branch is connected with the raw water branch and the second waste water outlet. The pressurizing device is positioned at the upstream of the water producing branch, raw water flows through the pressurizing device to enter the water producing branch, the integral connection mode of the first filtering unit group and the second filtering unit group in the water producing branch is in a serial connection mode, waste water generated by the second filtering unit group can be continuously input into the first filtering unit group for secondary filtering, and finally pure water generated by the first filtering unit group can be jointly discharged for a user through the pure water discharging branch after being combined with pure water generated by the second filtering unit group. It should be noted that the above-mentioned various water inlets, water outlets, etc. (for example, the first waste water outlet) are merely general terms in number, and include both one outlet and multiple branched outlets, which is not limited to the embodiment of the present invention.

101. Whether the first filter element assembly meets a first flushing condition is determined.

According to the description of the water path structure of the water purifier, the first filter element component is used as a passive flushing component, the first filter element component cannot perform self flushing operation through the first filter unit group, and the flushing operation can only be performed by means of the second filter component, so that whether the first filter element component meets the first flushing condition is judged.

102. And when the first filter element assembly is judged to meet the first flushing condition, controlling the second filter unit group to perform a first flushing operation on the first filter element assembly.

In the embodiment of the invention, when the first filter element assembly is judged to meet the first flushing condition, the second filter unit can be controlled to group the first filter element assembly for the first flushing operation. The specific mode of the first flushing operation is as follows: the raw water is input into the second filtering unit group through the pressurizing device, pure water and waste water are generated by the second filtering unit group, at the moment, the second branch circuit is closed, the waste water cannot be input into the first filtering unit group to avoid secondary pollution, and only the pure water is input into the first filtering unit group to flush the first filter element assembly in the first stage. The washing performed on the first filter assembly at this time belongs to 100% pure water washing, and the first filter assembly can be washed cleaner.

103. And judging whether the second filter element assembly meets a second flushing condition.

In the embodiment of the invention, after the first filter element assembly performs the first flushing operation, whether the second filter element assembly is flushed can be judged according to the actual water quality condition.

104. And when the second filter element assembly is judged to meet the second flushing condition, controlling the first branch to execute closing operation, and controlling the second filter unit group to execute second flushing operation on the second filter element assembly.

In the embodiment of the invention, when the second filter element assembly is judged to meet the second flushing condition, the first branch is controlled to execute the closing operation to prevent pure water from continuously flushing the first filter element assembly, and then the second filter unit assembly can be controlled to execute the self-flushing operation on the second filter element assembly, namely the second flushing operation. The specific mode of the second flushing operation is as follows: raw water is input into the second filtering unit group through the pressurizing device, pure water and waste water are generated by the second filtering unit group, and the waste water can be directly discharged through a waste water discharge branch or can be recycled; the pure water can flow back to the supercharging device through the pure water backflow branch and then is input into the second filtering unit to flush the second filter element assembly in the second stage.

Therefore, the method described by the embodiment of the invention can provide a control mode of the water purifier with the series connection of the filter unit groups, improves the flushing effect and efficiency of the filter unit groups, achieves the purpose of rapid flushing by the flushing operation among the filter unit groups and the self-flushing operation of the filter unit groups, saves the water consumption in the flushing process, further improves the flushing effect of the water purifier, improves the water yield of the water purifier, and avoids the influence of the waste water with too high concentration on the service life of the filter element.

In an alternative embodiment, the method of determining whether the first filter element assembly meets the first flushing condition may include the operations of:

judging whether the time difference between the current time point and the time point when the last flushing of the first filter element component is finished exceeds a first preset duration, and determining that the first filter element component meets a first flushing condition when the time difference between the current time point and the time point when the last flushing of the first filter element component is finished exceeds the first preset duration; or alternatively, the process may be performed,

Judging whether the working time length of the first filter unit group exceeds a second preset time length, and determining that the first filter element assembly meets a first flushing condition when the working time length of the first filter unit group exceeds the second preset time length; or alternatively, the process may be performed,

judging whether the third water quality value of the first pure water outlet exceeds a third preset threshold value, and determining that the first filter element assembly meets the first flushing condition when the third water quality value exceeds the third preset threshold value.

In the embodiment of the invention, the judgment of whether the first filter element assembly meets the first flushing condition can be realized in various modes. The water quality value detected by the water quality detection device of the first wastewater outlet during water production can be judged whether exceeds a preset threshold value, and when the detected water quality value of the first wastewater outlet exceeds the preset threshold value, the first filter element assembly can be determined to need to be washed; the water quality value of the water inlet of the first filter element can be judged by judging whether the water quality value of the water inlet of the first filter element exceeds a preset threshold value or not when water is produced, the first filter element assembly is polluted due to the fact that the water quality value of the water inlet of the first filter element is too poor, and the first filter element assembly needs to be washed; the method 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 finished, and when the time difference exceeds the preset duration, the first filter element assembly is indicated to have longer working duration and needs to be flushed; the same reason can be also judged by judging whether the working time length of the first filtering unit group exceeds the preset time length; the water production amount of the first filtering unit group can be judged whether exceeds the preset water amount, and the higher the water production amount is, the more the water production amount is required to be washed; in addition, whether the water quality value of the first pure water outlet exceeds a threshold value can be judged, and when the water quality value of the first pure water outlet is higher, the salinity of the pure water side of the first filter element assembly is too high, and flushing is needed.

Therefore, the method described by the embodiment of the invention can provide a control mode of the water purifier with the filter unit groups connected in series, so that the flushing effect and efficiency of the filter unit groups are improved, and meanwhile, a plurality of methods for detecting whether the filter element meets the flushing condition are also provided, so that the service condition of the filter element can be monitored more accurately, the filter element can be flushed accurately, unnecessary flushing operation is avoided, the flushing effect of the filter element is further improved, and the water yield of the water purifier is improved.

In yet another alternative embodiment, the method controlling the second set of filter elements to perform the first flushing operation on the first cartridge assembly may include the operations of:

when the flushing of the first stage is carried out, the second branch is controlled to execute closing operation;

determining a first adjustment parameter of the waste water reflux branch according to a preset control mode;

according to the first adjustment parameters of the waste water reflux branch, controlling the waste water reflux branch to execute a first waste water reflux operation, wherein the first waste water reflux operation is used for controlling waste water discharged by the second waste water outlet to reflux to the supercharging device when the waste water is washed in the first stage, and then inputting the waste water into the second filtering unit group;

pure water discharged from the second pure water outlet is input to the first filter unit group through the first branch circuit to flush the first filter element assembly.

In the embodiment of the invention, when the first filter element assembly is subjected to the first flushing operation, the second branch is controlled to be closed at first, so that secondary pollution caused by the input of wastewater generated by the second filter unit assembly is avoided. Furthermore, preferably, the first adjustment parameter of the waste water backflow branch is determined according to a preset control mode, and the waste water backflow branch is controlled to execute the first waste water backflow operation, in which the waste water discharged from the second waste water outlet is controlled to flow back to the second filtering unit group when the waste water is washed in the first stage, and part or all of the waste water is recycled. At the same time, pure water discharged from the second pure water outlet is controlled to be input into the first filter unit group through the first branch circuit so as to flush the first filter element assembly.

Therefore, the method described by the embodiment of the invention can provide a control mode of the water purifier with the filter unit groups connected in series, improves the flushing effect and efficiency of the filter unit groups, and simultaneously provides a control mechanism combining pure water and wastewater circulation so as to effectively flush the water purifier, recycle and reuse the wastewater, save water resources and further improve the water yield of the water purifier.

In yet another alternative embodiment, the method determines the first adjustment parameter of the waste water recirculation branch according to a preset control mode, and may include the following operations:

Determining a first adjustment parameter of the waste water reflux branch according to a preset control mode, wherein the first adjustment parameter comprises a first adjustment duration, a second adjustment duration and a third adjustment duration; the first adjustment duration is used for indicating the duration of controlling all wastewater discharged by the second wastewater outlet to flow back to the second filtering unit group when the first-stage flushing is performed; the second adjustment time length is used for indicating the duration time of controlling the waste water discharged from the second waste water outlet to flow back to the second filtering unit group according to the matched proportion when the waste water is washed in the first stage; the third adjustment time length is used for indicating the duration time for controlling the closing of the waste water branch; or alternatively, the process may be performed,

judging the magnitude relation between the real-time water quality value of the second wastewater outlet and the first flushing water quality threshold value and the second flushing water quality threshold value when flushing in the first stage according to a preset control mode; wherein the first flush water quality threshold is less than the second flush water quality threshold;

when the real-time water quality value of the second wastewater outlet is judged to be smaller than or equal to the first flushing water quality threshold value, determining a first adjustment parameter of the wastewater reflux branch, wherein the first adjustment parameter is specifically used for controlling all wastewater discharged by the second wastewater outlet during flushing in the first stage to reflux to the second filtering unit group through the wastewater reflux branch;

When the real-time water quality value of the second wastewater outlet is judged to be smaller than the second flushing water quality threshold value and larger than the first flushing water quality threshold value, determining a first adjustment parameter of the wastewater reflux branch, wherein the first adjustment parameter is specifically used for controlling wastewater discharged by the second wastewater outlet when flushing in the first stage to reflux to the second filtering unit group through the wastewater reflux branch according to the matched proportion;

when the real-time water quality value of the second wastewater outlet is larger than or equal to the second flushing water quality threshold value, determining a first adjustment parameter of the wastewater reflux branch, wherein the first adjustment parameter is specifically used for controlling the wastewater reflux branch to be closed when flushing in the first stage is carried out.

In the embodiment of the invention, the preset control mode can be a time mode, a water quality module, a mixture of the time mode and the water quality mode, and the like, and the embodiment of the invention is not limited.

The time mode can be used for finally achieving the water taking purpose of a user by presetting the working time of each control stage of the water purifier and controlling the starting time and the ending time of the working of each stage. Along with the second filtering unit group to the first filtering unit group washing operation, the second filtering unit group gradually gets worse because of the working time length gradually increases, and then the recycling degree of the wastewater discharged by the second wastewater outlet can be adjusted through stage control. Specifically, determining a first adjustment parameter of the waste water reflux branch, wherein the first adjustment parameter comprises a first adjustment duration, a second adjustment duration and a third adjustment duration; the first adjustment duration is used for indicating the duration of controlling all wastewater discharged by the second wastewater outlet to flow back to the second filtering unit group when the first-stage flushing is performed; the second adjustment time length is used for indicating the duration time length of controlling the waste water discharged from the second waste water outlet to flow back to the second filtering unit group according to the matched proportion when the waste water is washed in the first stage; the third control duration is used for indicating the duration of controlling the closing of the waste water branch.

The water quality mode may further determine the first adjustment parameter of the wastewater reflux branch according to the real-time water quality value (for example, TDS, alkalinity, hardness, etc., which is not limited in the embodiment of the present invention) at the second wastewater outlet in the first stage flushing process by monitoring the second filtering unit set.

Specifically, through the real-time water quality value of the monitored second wastewater outlet, the water quantity conditions of the wastewater discharge branch and the wastewater reflux branch can be dynamically adjusted according to the real-time water quality value, so that the optimal flushing effect is achieved, and meanwhile, the water can be saved. In the embodiment of the invention, two flushing water quality thresholds are set: a first flush water quality threshold and a second flush water quality threshold, wherein the first flush water quality threshold is less than the second flush water quality threshold. When the real-time water quality value is judged to be smaller than or equal to the first flushing water quality threshold value, the initial stage of flushing is indicated, and the wastewater discharged from the second wastewater outlet can be completely recycled. Along with the promotion of flushing process, salt in the second filter element assembly becomes more and more because the water production, simultaneously the real-time water quality value of second waste water outlet also gradually increases, when the real-time water quality value is monitored to be greater than first washing water quality threshold value and is less than second washing water quality threshold value, waste water can flow back the reuse through waste water backward flow branch road, adjust the first adjustment parameter of waste water backward flow branch road this moment, be used for flowing back the waste water that the second waste water outlet discharged to supercharging device according to the matched proportion after inputting the second filter element water inlet, namely control waste water backward flow branch road progressively reduced waste water reflux water yield and waste water discharge branch road progressively increased waste water discharge water yield, concrete proportional relation can be adjusted according to actual conditions, do not limit in the embodiment of the invention. Along with the continuous promotion of flushing process, lead to the real-time water quality value of second waste water outlet exhaust water higher, waste water is inconvenient for backward flow reuse this moment, adjusts the first adjustment parameter of waste water return circuit branch road this moment, and control waste water backward flow branch road is closed completely, waste water discharge branch road is opened completely, discharges the waste water that produces this moment totally.

Therefore, the method described by the embodiment of the invention can provide a control mode of the water purifier with the filter unit groups connected in series, improves the flushing effect and efficiency of the filter unit groups, can accurately control the accurate connection nodes and processes among all stages through diversified control modes, improves the control precision in the flushing process of the filter element, further realizes the accurate flushing of the filter element, avoids unnecessary flushing operation, further improves the flushing effect of the filter element, and improves the water yield of the water purifier.

In yet another alternative embodiment, the method of determining whether the second filter element assembly meets the second flushing condition may include the operations of:

Judging whether the time difference between the current time point and the time point of the last flushing of the second filter element component exceeds a fourth preset duration, and determining that the second filter element component meets a second flushing condition when the time difference between the current time point and the time point of the last flushing of the second filter element component exceeds the fourth preset duration; or alternatively, the process may be performed,

judging whether the water production amount of the second filter unit group exceeds a second preset water amount, and determining that the second filter element assembly meets a second flushing condition when judging that the water production amount of the second filter unit group exceeds the second preset water amount; or alternatively, the process may be performed,

judging whether the sixth water quality value of the second pure water outlet exceeds a sixth preset threshold value, and determining that the second filter element assembly meets the second flushing condition when judging that the sixth water quality value exceeds the sixth preset threshold value.

In yet another alternative embodiment, the method controlling the second filter element set to perform a second flushing operation on the second filter element assembly may include the operations of:

when the second stage flushing is carried out, the first branch and the second branch are controlled to execute closing operation;

and controlling the pure water reflux branch to execute pure water reflux operation, wherein the pure water reflux operation is used for refluxing part or all of pure water discharged from the second pure water outlet to the pressurizing device and inputting the pure water into the second filtering unit group so as to enable the pure water to be mixed with raw water of the raw water branch to flush the second filter element assembly.

In the embodiment of the invention, the specific mode of the second flushing operation is as follows: in performing the second flushing operation, the first branch and the second branch need to be closed first. Further, the second pure water outlet is controlled to be partially or completely returned and input into the second filtering unit group in a queuing way, so that the second pure water outlet is mixed with the raw water of the raw water branch to flush the second filter element assembly. It should be noted that the second filter unit set performs a self-flushing operation at this time.

Therefore, the method described by the embodiment of the invention provides a control mode of the water purifier with the series connection of the filter unit groups, improves the flushing effect and efficiency of the filter unit groups, achieves the purpose of rapid flushing by the flushing operation among the filter unit groups and the self-flushing operation of the filter unit groups, saves the water consumption in the flushing process, further improves the flushing effect of the water purifier, improves the water yield of the water purifier, and avoids the influence of the waste water with too high concentration on the service life of the filter element.

Example two

Referring to fig. 2, fig. 2 is a schematic flow chart of another control of a water purifier according to an embodiment of the invention. The method described in fig. 2 may be applied to a control device of a water purifier, where the control device of the water purifier may be an independent device (such as a water purifying apparatus), or may be a server corresponding to the control device of the water purifier. As shown in fig. 2, the water purifier control method may include the following operations:

201. whether the first filter element assembly meets a first flushing condition is determined.

202. And when the first filter element assembly is judged to meet the first flushing condition, controlling the second filter unit group to perform a first flushing operation on the first filter element assembly.

203. And judging whether the second filter element assembly meets a second flushing condition.

204. And when the second filter element assembly is judged to meet the second flushing condition, controlling the first branch to execute closing operation, and controlling the second filter unit group to execute second flushing operation on the second filter element assembly.

In the embodiment of the present invention, for other descriptions of step 201 to step 204, please refer to the detailed descriptions of step 101 to step 104 in the first embodiment, respectively, and the description of the embodiment of the present invention is omitted.

205. Determining a second adjustment parameter of the waste water reflux branch according to a preset control mode; and controlling the waste water reflux branch to execute the second waste water reflux operation according to the second adjustment parameter of the waste water reflux branch.

In the embodiment of the invention, when the flushing operation of the second stage is performed, the second filter element unit group is only subjected to the operation of mixing pure water with raw water for flushing, at this time, in order to further improve the recycling efficiency of the waste water, a second adjustment parameter of the waste water branch circuit can be determined according to a preset control mode, and further, the waste water reflux branch circuit is controlled to perform the second waste water reflux operation according to the second adjustment parameter, wherein the second waste water operation is used for controlling the waste water discharged from the second waste water outlet to reflux to the second filter element unit group so as to mix the waste water of the raw water branch circuit and the pure water of the pure water reflux branch circuit to perform the flushing of the second filter element assembly of the third stage.

Therefore, the method described by the embodiment of the invention can provide a control mode of the water purifier with the filter unit groups connected in series, improves the flushing effect and efficiency of the filter unit groups, and simultaneously provides another control mechanism combining pure water and wastewater circulation so as to effectively flush the water purifier, recycle and reuse the wastewater, save water resources and further improve the water yield of the water purifier.

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

according to a preset control mode, determining an adjustment duration parameter of the waste water reflux branch when the third-stage flushing is performed, wherein the adjustment duration parameter is particularly used for controlling duration of the waste water discharged by the second waste water outlet when the third-stage flushing is performed, wherein the duration is the duration of the waste water reflux to the second filtering unit group; or alternatively, the process may be performed,

judging the magnitude relation between the real-time water quality value of the second wastewater outlet, the third flushing water quality threshold value and the fourth flushing water quality threshold value when flushing in the third stage according to a preset control mode; wherein the third flush water quality threshold is greater than the fourth flush water quality threshold;

determining a second adjustment parameter of the waste water reflux branch according to the magnitude relation between the real-time water quality value of the second waste water outlet, the third flushing water quality threshold and the fourth flushing water quality threshold when flushing in the third stage is carried out; the second adjusting parameter is used for controlling the waste water backflow branch to execute a second waste water backflow operation.

In the embodiment of the invention, when the preset control mode is the time mode, the second filtering unit group is flushed by the pure water in a backflow way, and the water quality of the wastewater discharged by the wastewater outlet of the second filtering unit group is gradually improved due to the gradual increase of the working time length of the second filtering unit group, so that the reutilization degree of the wastewater discharged by the wastewater outlet of the second filtering unit group can be adjusted through stage control.

Further, when the preset control mode is a water quality mode, the second adjustment parameter of the waste water backflow branch can be determined by monitoring a real-time water quality value (such as TDS, alkalinity, hardness, etc., which is not limited in the embodiment of the present invention) at the second waste water outlet in the third stage of the flushing process of the second filter unit set. Specifically, through the real-time water quality value of the monitored second wastewater outlet, the water quantity conditions of the wastewater discharge branch and the wastewater reflux branch can be dynamically adjusted according to the real-time water quality value, so that the optimal flushing effect is achieved, and meanwhile, the water can be saved. In the embodiment of the invention, two flushing water quality thresholds are set: a third flush water quality threshold and a fourth flush water quality threshold, wherein the third flush water quality threshold is greater than the fourth flush water quality threshold. Along with the promotion of flushing process, salt in the second filter element assembly becomes less because flushing, simultaneously the real-time water quality value of the second waste water outlet also gradually reduces, when the real-time water quality value is monitored to be greater than the fourth flushing water quality threshold value and smaller than the third flushing water quality threshold value, waste water can be returned through the waste water return branch and reused, at this time, the second adjustment parameter of the waste water return branch is adjusted, waste water discharged from the second waste water outlet is returned to the supercharging device according to the matched proportion and then is input into the water inlet of the second filter element, namely the waste water return branch is controlled to gradually increase the waste water return water quantity and the waste water discharge branch gradually reduces the waste water discharge quantity, and the specific proportion relation can be adjusted according to actual conditions. When the real-time water quality value is smaller than or equal to the fourth flushing water quality threshold value, the flushing reaches a stable stage, and the wastewater discharged from the second wastewater outlet can be completely recycled.

Therefore, the method described by the embodiment of the invention can provide a control mode of the water purifier with the filter unit groups connected in series, so that the flushing effect and efficiency of the filter unit groups are improved, meanwhile, the accurate connection nodes and processes among all stages can be accurately controlled in a diversified control mode, the control precision in the flushing process of the filter element is improved, the filter element is accurately flushed, unnecessary flushing operation is avoided, the flushing effect of the filter element is further improved, and the water yield of the water purifier is improved.

206. When the first flushing operation and the second flushing operation are judged to be completed and the water taking instruction is received, the water producing branch is controlled to execute the water producing operation.

In the embodiment of the invention, the method can further comprise the following operations:

judging whether the first flushing operation and the second flushing operation are finished or not;

wherein, control the branch road of producing water and carry out the operation of producing water, include:

the raw water of the raw water branch is controlled to be input to a water inlet of the second filter element through the supercharging device so as to control the second filter unit group to perform the first water making operation;

And controlling the pure water backflow branch and the first branch to be closed, and simultaneously controlling all wastewater discharged by the second wastewater outlet to be input into the water inlet of the first filter element through the second branch so as to control the first filter unit group to perform second water making operation.

Example III

Referring to fig. 3, fig. 3 is a schematic structural diagram of a control device of a water purifier according to an embodiment of the invention. The device described in fig. 3 may be an independent device (such as a water purifying device), or may be a server corresponding to a control device of a 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 the water purifier control method described in the first embodiment and the second embodiment, and detailed description will not be repeated in this embodiment, as shown in fig. 3, the water purifier control device may include:

A first determining module 301, configured to determine whether the first filter element assembly meets a first flushing condition;

the first flushing module 302 is configured to control the second filter unit group to perform a first flushing operation on the first filter element assembly when the first judging module 301 judges that the first filter element assembly meets a first flushing condition; the first flushing operation is used for inputting pure water generated by the second filter unit group into the first filter unit group through the first branch so as to flush the first filter element assembly in the first stage;

a second determining module 303, configured to determine whether the second filter element assembly meets a second flushing condition;

the second flushing module 304 is configured to control the first branch to perform a closing operation and control the second filtering unit group to perform a second flushing operation on the second filter element assembly when the second judging module judges that the second filter element assembly meets a second flushing condition; the second flushing operation is used for returning pure water generated by the second filter unit group to the supercharging device through the pure water return branch and inputting the pure water into the second filter unit group so as to flush the second filter element assembly in the second stage.

Therefore, the device described in the embodiment of the invention can provide a control mode of the water purifier with the filter unit groups connected in series, so that the flushing effect and efficiency of the filter unit groups are improved, the water consumption in the flushing process is saved while the purpose of rapid flushing is achieved through the flushing operation between the filter unit groups and the self-flushing operation of the filter unit groups, the flushing effect of the water purifier is further improved, the water yield of the water purifier is improved, and the influence of the waste water with too high concentration on the service life of the filter element is avoided.

In an alternative embodiment, as shown in fig. 4, the first determining module 301 is specifically configured to:

Therefore, the device described in fig. 4 can provide a control mode of the water purifier with the series connection of the filter unit groups, so that the flushing effect and efficiency of the filter unit groups are improved, meanwhile, a method for detecting whether the filter element meets the flushing condition is also provided, the service condition of the filter element can be monitored more accurately, so that the filter element can be flushed accurately, unnecessary flushing operation is avoided, the flushing effect of the filter element is further improved, and the water yield of the water purifier is improved.

In another alternative embodiment, as shown in fig. 4, the first flush module 302 may include:

a first control submodule 3021, configured to control the second branch to perform a closing operation when the flushing of the first stage is performed;

a first determining submodule 3022, configured to determine a first adjustment parameter of the wastewater reflux branch according to a preset control mode;

a second control submodule 3023, configured to control the waste water recirculation branch to perform a first waste water recirculation operation according to a first adjustment parameter of the waste water recirculation branch, where the first waste water recirculation operation is used to control waste water discharged from the second waste water outlet to flow back to the supercharging device and then input into the second filtration unit group when the waste water is flushed in the first stage;

A first flushing submodule 3024 for inputting pure water discharged from the second pure water outlet to the first filter element group via the first branch line for flushing the first filter element assembly.

It can be seen that implementing the device described in fig. 4 can also provide a water purifier control mode in which the filter unit groups are connected in series, so as to improve the flushing effect and efficiency of the filter unit groups, and simultaneously, a control mechanism combining pure water and wastewater circulation is provided, so that the water purifier can be effectively flushed, wastewater can be recycled, and the water yield of the water purifier can be further improved while water resources are saved.

In yet another alternative embodiment, as shown in fig. 4, the first determining submodule 3022 is specifically configured to:

It can be seen that implementing the device described in fig. 4 can also provide a purifier control mode that filter unit group established ties, improves the washing effect and the efficiency of filter unit group, can accurately control accurate joint node and the process between each stage through diversified control mode simultaneously, improves the control accuracy in the filter core washing process, and then realizes the accurate washing to the filter core, avoids unnecessary washing operation, further promotes filter core washing effect, improves the water yield of purifier.

In yet another alternative embodiment, as shown in fig. 4, the second determining module 303 is specifically configured to:

Therefore, the device described in fig. 4 can also provide a control mode of the water purifier with the series connection of the filter unit groups, so that the flushing effect and efficiency of the filter unit groups are improved, and meanwhile, a method for detecting whether the filter element meets the flushing condition is also provided, so that the service condition of the filter element can be monitored more accurately, the filter element can be flushed accurately, unnecessary flushing operation is avoided, the flushing effect of the filter element is further improved, and the water yield of the water purifier is improved.

In yet another alternative embodiment, as shown in fig. 4, the second flush module 304 may include:

a third control submodule 3041, configured to control the first branch and the second branch to execute a closing operation when performing the flushing of the second stage;

the second flushing submodule 3042 is configured to control the pure water backflow branch to perform pure water backflow operation, where the pure water backflow operation is used to backflow part or all of pure water discharged from the second pure water outlet to the supercharging device, and then input the pure water into the second filtering unit group, so that the pure water backflow operation is mixed with raw water of the raw water branch to flush the second filter element assembly.

Therefore, the device described in fig. 4 can also provide a control mode of the water purifier with the series connection of the filter unit groups, so that the flushing effect and efficiency of the filter unit groups are improved, the water consumption of the flushing process is saved while the purpose of rapid flushing is achieved through the flushing operation between the filter unit groups and the self-flushing operation of the filter unit groups, the flushing effect of the water purifier is further improved, the water yield of the water purifier is improved, and the service life of the filter element is prevented from being influenced by the waste water with too high concentration.

In yet another alternative embodiment, as shown in fig. 4, the apparatus may further include:

a determining module 305, configured to determine, according to a preset control mode, a second adjustment parameter of the wastewater return branch after the second flushing module 304 performs the flushing of the second stage;

And the third flushing module 306 is configured to control the waste water backflow branch to perform a second waste water backflow operation according to a second adjustment parameter of the waste water backflow branch, where the second waste water backflow operation is used to control waste water discharged from the second waste water outlet to flow back to the supercharging device, and then input the waste water into the second filtering unit group, so that the waste water is mixed with raw water of the raw water branch and pure water flowing back from the pure water branch to flush the filter element in a third stage. .

It can be seen that the device described in fig. 4 can also provide a control mode of the water purifier with the series connection of the filtering unit groups, so as to improve the flushing effect and efficiency of the filtering unit groups, and simultaneously, provide another control mechanism combining pure water and wastewater circulation, so as to effectively flush the water purifier, recycle and reuse the wastewater, save water resources, and further improve the water yield of the water purifier.

In this alternative embodiment, the determining module 305 is specifically configured to:

It can be seen that implementing the device described in fig. 4 can also provide a water purifier control mode that the filter unit group was established ties, improves the washing effect and the efficiency of filter unit group, can be another simultaneously through diversified control mode, accurate joint node and the process between each stage of accurate control improves the control accuracy of filter core washing in-process, and then realizes the accurate washing to the filter core, avoids unnecessary washing operation, further promotes the filter core washing effect, improves the water yield of purifier.

A third judging module 307 for judging whether the first flushing operation and the second flushing operation and/or the flushing of the third stage are completed;

the third judging module 307 is further configured to judge whether a water intake instruction is received when the third judging module 307 judges that the first flushing operation and the second flushing operation and/or the flushing at the third stage are completed;

the water producing module 308 is configured to control the water producing branch to perform a water producing operation when the third judging module 307 judges that the water taking instruction is received;

the water making module 308 is specifically configured to:

Example IV

Referring to fig. 5, fig. 5 is a schematic structural diagram of a control device of a water purifier according to an embodiment of the invention. The device described in fig. 5 may be an independent device (such as a water purifying device), or may be a server corresponding to a control device of a water purifier, which is not limited in the embodiment of the present invention. As shown in fig. 5, the water purifier control device may include:

a memory 401 storing executable program codes;

a processor 402 coupled with the memory 401;

the processor 402 invokes executable program codes stored in the memory 401 to perform part or all of the steps in the water purifier control method disclosed in the first or second embodiment of the present invention.

Example five

The embodiment of the invention discloses a computer storage medium which stores computer instructions for executing the steps in the water purifier control method disclosed in the first or second embodiment of the invention when the computer instructions are called.

The apparatus embodiments described above are merely illustrative, wherein the modules illustrated as separate components may or may not be physically separate, and the components shown as modules may or may not be physical, i.e., may be located in one place, or may be distributed over a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

From the above detailed description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course by means of hardware. Based on such understanding, the foregoing technical solutions may be embodied essentially or in part in the form of a software product that may be stored in a computer-readable storage medium including Read-Only Memory (ROM), random-access Memory (Random Access Memory, RAM), programmable Read-Only Memory (Programmable Read-Only Memory, PROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), one-time programmable Read-Only Memory (OTPROM), electrically erasable programmable Read-Only Memory (EEPROM), compact disc Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM) or other optical disc Memory, magnetic disc Memory, tape Memory, or any other medium that can be used for computer-readable carrying or storing data.

It should be noted that the computer program code required for operation of portions of the present description may be written in any one or more programming languages, including an object oriented programming language such as Java, scala, smalltalk, eiffel, JADE, emerald, C ++, c#, vb.net, python, etc., a conventional programming language such as C language, visual Basic, fortran2003, perl, COBOL 2002, PHP, ABAP, a dynamic programming language such as Python, ruby and Groovy, or other programming languages, etc. The program code may run entirely on the computer (PC, embedded smart device, etc.), on the user's computer as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer may be connected to the user's computer through any form of network, such as a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet), or the use of services such as software as a service (SaaS) in a cloud computing environment.

Finally, it should be noted that: the embodiment of the invention discloses a control method and a control device of a water purifier, which are disclosed by the embodiment of the invention and are only used for illustrating the technical scheme of the invention, but not limiting the technical scheme; although the invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme recorded in the various embodiments can be modified or part of technical features in the technical scheme can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. The utility model provides a purifier control method, the purifier includes raw water branch road, supercharging device, produces water branch road, waste water discharge branch road and pure water discharge branch road, its characterized in that, produce water branch road and include first filter element group and second filter element group, first filter element group includes first filter element water inlet, first filter element subassembly, first waste water export, first pure water export, second filter element group includes second filter element water inlet, second filter element subassembly, second waste water export, second pure water export, raw water branch road with second filter element water inlet is connected, the second pure water export is connected to first filter element water inlet through first branch road, the second waste water export is connected to first filter element water inlet through the second branch road, the second pure water export still is connected with pure water backward flow branch road, the second waste water export still is connected with waste water backward flow branch road, the method includes:

2. The method of claim 1, wherein the determining whether the first filter element assembly meets a first flush condition comprises:

3. The water purifier control method according to claim 1 or 2, wherein the controlling the second filter unit group to perform a first flushing operation on the first filter element assembly comprises:

4. The method according to claim 3, wherein determining the first adjustment parameter of the waste water recirculation branch according to the preset control mode includes:

5. The method of claim 1, wherein the determining whether the second filter element assembly meets a second flush condition comprises:

6. The water purifier control method of claim 5, wherein the controlling the second filter unit group to perform a second flushing operation on the second filter element assembly comprises:

7. The water purifier control method of claim 6, wherein after the controlling the second filter unit group to perform a second flushing operation on the second filter element assembly, the method further comprises:

8. The method according to claim 7, wherein determining the second adjustment parameter of the waste water recirculation branch according to the preset control mode includes:

9. The water purifier control method according to any one of claims 5-8, further comprising:

10. The utility model provides a purifier controlling means, the purifier includes raw water branch road, supercharging device, produces water branch road, waste water discharge branch road and pure water discharge branch road, its characterized in that, produce water branch road and include first filter element group and second filter element group, first filter element group includes first filter element water inlet, first filter element subassembly, first waste water export, first pure water export, second filter element group includes second filter element water inlet, second filter element subassembly, second waste water export, second pure water export, raw water branch road with second filter element water inlet is connected, the second pure water export is connected to through first branch road first filter element water inlet, the second waste water export is connected to through the second branch road first filter element water inlet, the second pure water export still is connected with pure water backward flow branch road, the second waste water export still is connected with waste water backward flow branch road, the device includes: