CN116675291A

CN116675291A - Water purification control method and water purification system based on double filter assemblies

Info

Publication number: CN116675291A
Application number: CN202210163536.XA
Authority: CN
Inventors: 陈小平; 李大川; 李中杨; 吕苏
Original assignee: Foshan Viomi Electrical Technology Co Ltd
Current assignee: Foshan Viomi Electrical Technology Co Ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2023-09-01

Abstract

The invention discloses a water purifying control method based on double filter components, which is applied to a water purifying system, wherein the water purifying system comprises a raw water branch, a supercharging device, a water producing branch, a wastewater discharging branch, a pure water discharging branch and a supercharging device, and when judging that the water producing branch meets a first flushing condition, the water purifying system is controlled to execute a first flushing operation; when the water producing branch circuit meets the water producing condition, controlling the water purifying system to execute the water producing in the first stage and the water producing in the second stage. Therefore, the invention can provide a multi-stage flushing and water production control mechanism, adopts a structure of double filter components, achieves the aim of rapid flushing and saves the water consumption in the flushing process through the flushing operation among the filter unit groups, so as to effectively flush and produce water for the water purification system, obviously improve the intelligent control level of the water purification system, improve the flushing efficiency of the filter element, improve the water yield of the water purification system, improve the water quality of the cup water and avoid the waste of water resources.

Description

Water purification control method and water purification system based on double filter assemblies

Technical Field

The invention relates to the technical field of water purification, in particular to a water purification control method and a water purification system based on double filter assemblies.

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 purification control method based on double filter assemblies to improve the flushing and water production efficiency.

Disclosure of Invention

The invention provides a water purifying control method and device based on double filter components, which can provide a multi-stage flushing and water producing control mechanism, adopt a structure of the double filter components, achieve the purpose of rapid flushing by flushing operation among filter unit groups, save water consumption in the flushing process, effectively flush and produce water for a water purifying system, remarkably improve the intelligent control level of the water purifying system, improve the flushing efficiency of a filter element, improve the water yield of the water purifying system, improve the water quality of head cup water and avoid the waste of water resources.

In order to solve the technical problem, the first aspect of the present invention discloses a water purification control method based on a dual filter assembly, the method is applied to a water purification system, the water purification system comprises a raw water branch, a supercharging device, a water producing branch, a waste water discharging branch and a pure water discharging branch, the raw water branch is provided with the supercharging device, the supercharging device is used for generating water pressure difference, the supercharging device is located at the upstream of the water producing branch, the water producing branch is characterized in that the water producing branch comprises a first filter element group and a second filter element group, the first filter element 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 element 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 first waste water outlet is connected with the second filter element water inlet, the first pure water outlet and the second pure water outlet are both connected with the pure water discharging branch, the first pure water outlet is also connected with a first pure water reflux branch, the second pure water outlet is also connected with the waste water outlet, and the waste water discharging method comprises:

Judging whether the water producing branch circuit meets a first flushing condition or not;

when the water producing branch circuit is judged to meet the first flushing condition, controlling the water purifying system to execute a first flushing operation; the first flushing operation is used for respectively refluxing pure water generated by the first filtering unit group and the second filtering unit group to the pressurizing device through the first pure water reflux branch and the second pure water reflux branch, and then inputting the pure water into the water generating branch so as to flush the first filter element component and the second filter element component;

judging whether the water producing branch circuit meets the water producing condition or not;

when the water producing branch circuit meets the water producing condition, controlling the water purifying system to execute water producing in the first stage and water producing in the second stage;

when the water making in the first stage is performed, controlling the water purifying system to perform a first water making operation, wherein the first water making operation is used for controlling pure water generated by the second filtering unit group to flow back to the pressurizing device through the second pure water backflow branch, and then inputting the pure water into the first filtering unit group so as to discharge the pure water generated by the first filtering unit group through the pure water discharge branch;

and when the water making of the second stage is performed, controlling the water purifying system to execute a second water making operation, wherein the second water making operation is used for discharging pure water generated by the first filtering unit group and the second filtering unit group through the pure water discharging branch respectively.

As an optional implementation manner, in the first aspect of the present invention, a pre-device is further disposed on the raw water branch, the pre-device is located upstream of the pressurizing device, and the second waste water outlet is further connected with a waste water backflow branch;

after the controlling the water purification system to perform the first rinsing operation, the method further comprises:

judging whether the water producing branch circuit meets a second flushing condition or not;

when the water producing branch circuit meets the second flushing condition, controlling the water purifying system to execute a second flushing operation; the second flushing operation is used for controlling the waste water backflow branch to execute a first waste water backflow operation, and the first waste water backflow operation is used for backflow of waste water discharged by the second waste water outlet to the front-end device, so that the waste water buffered in the front-end device is replaced and pushed out to be mixed with pure water returned by the first flushing operation, and the pure water is input to the supercharging device and then is input to the water production branch to flush the first filter element component and the second filter element component.

As an alternative embodiment, in the first aspect of the present invention, when the first stage of water production is performed, the method further includes:

The waste water backflow branch is controlled to execute a second waste water backflow operation, the second waste water backflow operation is used for controlling the waste water backflow branch to backflow waste water discharged from the second waste water outlet to the front device, so that the waste water buffered in the front device is replaced and then pushed out to be mixed with pure water returned by the first water making operation, the pure water is input to the pressurizing device and then is input to the first filtering unit group, and pure water generated by the first filtering unit group is discharged through the pure water discharge branch.

In an optional implementation manner, in the first aspect of the present invention, the determining whether the water producing branch meets the second flushing condition includes:

judging whether the duration of the first flushing operation exceeds a first preset duration, and determining that the water producing branch meets a second flushing condition when judging that the duration of the first flushing operation exceeds the first preset duration; or alternatively, the process may be performed,

judging whether the first water quality value of the second wastewater outlet is lower than a first water quality threshold value, and determining that the water producing branch meets a second flushing condition when judging that the first water quality value of the second wastewater outlet is lower than the first water quality threshold value.

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

judging whether the water production of the first stage is finished or not when the water production of the first stage is carried out, and starting the water production of the second stage when the water production of the first stage is judged to be finished;

wherein, the judging whether the water making in the first stage is completed comprises:

judging whether the duration of the water making in the first stage exceeds a second preset duration, and determining that the water making in the first stage is finished when judging that the duration of the water making in the first stage exceeds the second preset duration; or alternatively, the process may be performed,

judging whether the first water quality value of the second wastewater outlet exceeds a second water quality threshold value, and determining that the water production in the first stage is completed when judging that the second water quality value of the second wastewater outlet exceeds the second water quality threshold value.

and when the water making in the first stage or the water making in the second stage is carried out, controlling the waste water backflow branch to execute closing operation when judging that the first water quality value of the second waste water outlet exceeds a third water quality threshold value or when judging that the second water quality value of the water inlet of the first filter element exceeds a fourth water quality threshold value.

In an optional implementation manner, in the first aspect of the present invention, the determining whether the water producing branch meets the first flushing condition includes:

judging whether a third water quality value of the first wastewater outlet exceeds a fifth water quality threshold, and determining that the water producing branch meets the first flushing condition when the third water quality value exceeds the fifth water quality threshold; or alternatively, the process may be performed,

judging whether a first water quality value of the second wastewater outlet exceeds a sixth water quality threshold, and determining that the water producing branch meets the first flushing condition when the first water quality value exceeds the sixth water quality threshold; or alternatively, the process may be performed,

judging whether a fourth water quality value of the first pure water outlet exceeds a seventh water quality threshold, and determining that the water producing branch meets the first flushing condition when judging that the fourth water quality value exceeds the seventh water quality threshold; or alternatively, the process may be performed,

judging whether a fifth water quality value of the second pure water outlet exceeds an eighth water quality threshold, and determining that the water producing branch meets the first flushing condition when judging that the fifth water quality value exceeds the eighth water quality threshold; or alternatively, the process may be performed,

judging whether a sixth water quality value of the pure water discharge branch exceeds a ninth water quality threshold, and determining that the water producing branch meets the first flushing condition when judging that the sixth water quality value exceeds the ninth water quality threshold; or alternatively, the process may be performed,

Judging whether the time difference between the current time point and the time point when the last flushing of the water producing branch is finished exceeds a third preset duration, and determining that the water producing branch meets the first flushing condition when the time difference between the current time point and the time point when the last flushing of the water producing branch is finished exceeds the third preset duration; or alternatively, the process may be performed,

judging whether the working time length of the water producing branch circuit exceeds a fourth preset time length, and determining that the water producing branch circuit meets the first flushing condition when judging that the working time length of the water producing branch circuit exceeds the fourth preset time length, wherein the working time length comprises the total time length of single water producing working time length or the last N water producing working time lengths; or alternatively, the process may be performed,

judging whether the water production amount of the water producing branch exceeds a preset water amount, and determining that the water producing branch meets the first flushing condition when judging that the water production amount of the water producing branch exceeds the preset water amount, wherein the water production amount comprises the water production amount of a single time or the total water production amount of the latest N times; or alternatively, the process may be performed,

judging whether the water production times of the water production branch circuit exceeds preset water production times, and determining that the water production branch circuit meets the first flushing condition when judging that the water production times of the water production branch circuit exceeds the preset water production times, wherein the water production times comprise the sum of the water production times between the current time point and the time point when the latest flushing of the water production branch circuit is finished or the total water production times in the water production life cycle of the water production branch circuit.

The second aspect of the present invention discloses a water purification system based on a double filtration assembly, the water purification system comprises a raw water branch, a water production branch, a wastewater discharge branch and a pure water discharge branch, the raw water branch is provided with a pressurizing device, the pressurizing device is used for generating a water pressure difference, and the pressurizing device is located at the upstream of the water production branch, and the water purification system is characterized in that the water purification system further comprises:

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 first waste water outlet is connected with the second filter element water inlet, and the first pure water outlet and the second pure water outlet are both connected with the pure water discharging branch;

a first pure water return branch, which is intersected with the pure water discharge branch at a first pure water return intersection point, and which is intersected with the raw water branch at a second pure water return intersection point; a second pure water reflux branch, one end of which is connected to the second pure water outlet, and the other end of which is intersected with the first pure water reflux branch at a third pure water reflux intersection point, wherein the third pure water reflux intersection point is positioned between the first pure water reflux intersection point and the second pure water reflux intersection point;

The first pure water reflux branch and the second pure water reflux branch are used for respectively refluxing pure water generated by the first filtering unit group and the second filtering unit group to the supercharging device and inputting the pure water to the water generating branch so as to flush the first filter element component and the second filter element component when the water generating branch meets a first flushing condition;

the water producing branch is used for producing water in the first stage and producing water in the second stage when judging that the water producing branch meets the water producing conditions;

when water is produced in the first stage, the second pure water backflow branch is also used for backflow of pure water generated by the second filter unit group to the pressurizing device and then inputting the pure water into the first filter unit group, so that the pure water generated by the first filter unit group is discharged through the pure water discharge branch;

and when the water production of the second stage is carried out, the water production branch is used for discharging pure water generated by the first filtering unit group and the second filtering unit group through the pure water discharge branch respectively.

As an alternative embodiment, in the second aspect of the present invention, the water purification system further includes:

A waste water return branch, wherein the waste water return branch and the waste water discharge branch are intersected at a first waste water return intersection point, and the waste water return branch and the raw water branch are intersected at a second waste water return intersection point; the second wastewater reflux intersection point is positioned upstream of the supercharging device;

the raw water branch is provided with a front device which is used for caching raw water of the raw water branch or/and the waste water discharged and reflowed by the second waste water outlet; the front device is positioned downstream of the second wastewater reflux cross point and upstream of the second pure water reflux cross point;

and the waste water reflux branch is used for refluxing waste water discharged from the second waste water outlet to the front device when judging that the water production branch meets the second flushing condition, so that the waste water is pushed out after the raw water buffered in the front device is replaced, and the waste water is mixed with pure water refluxed by the first pure water reflux branch and the second pure water reflux branch and is input to the supercharging device, and then the waste water is input to the water production branch so as to flush the first filter element component and the second filter element component.

As an alternative embodiment, in the second aspect of the present invention, a first pure water reflux valve assembly and a second pure water reflux valve assembly are provided on the first pure water reflux branch, the first pure water reflux valve assembly is located between the first pure water reflux intersection point and the third pure water reflux intersection point, and the second pure water reflux valve assembly is located between the second pure water reflux intersection point and the third pure water reflux intersection point; the waste water reflux branch is provided with a waste water reflux valve component; the pure water discharge branch is provided with a pure water valve component; and a wastewater valve assembly is arranged on the wastewater discharge branch.

a water quality detection device is arranged on a branch communicated with the second wastewater outlet and is used for monitoring the real-time water quality value of the second wastewater outlet;

wherein, water quality testing device includes:

the first water quality detection device is arranged at the second wastewater outlet; or/and the combination of the two,

the second water quality detection device is arranged on the waste water return branch; or/and the combination of the two,

and a third water quality detection device arranged on the waste water discharge branch.

In a second aspect of the present invention, when the waste water recirculation branch and the waste water discharge branch share a part of the branch, waste water proportioning means are provided on the branch shared by the waste water recirculation branch and the waste water discharge branch, the waste water proportioning means being used for adjusting the water volume proportions of the waste water discharged from the waste water outlet flowing into the waste water recirculation branch and the waste water discharge branch, respectively.

In a second aspect of the present invention, a fourth water quality detection device is disposed at the first wastewater outlet, and the fourth water quality detection device is configured to detect a water quality condition of the first wastewater outlet.

In a second aspect of the present invention, a fifth water quality detection device is provided on the first pure water return branch, the fifth water quality detection device being located between the first pure water outlet and the first pure water return intersection, the fifth water quality detection device being configured to detect a water quality condition of the first pure water outlet.

In a second aspect of the present invention, a sixth water quality detection device is provided on the second pure water return branch, the sixth water quality detection device being located between the second pure water outlet and the third pure water return intersection, the sixth water quality detection device being configured to detect a water quality condition of the second pure water outlet.

In a second aspect of the present invention, a seventh water quality detection device is disposed on the raw water branch, the seventh water quality detection device being located between the second pure water backflow intersection and the first filter element water inlet, and the seventh water quality detection device being configured to detect a water quality condition of the first filter element water inlet.

In a third aspect, the present invention discloses another water purification control device based on a double filter assembly, 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 some or all of the steps of any of the dual filter assembly based water purification control methods disclosed in the first aspect of the present invention.

A fourth aspect of the invention discloses a computer storage medium storing computer instructions which, when invoked, are adapted to perform part or all of the steps of any of the dual filter assembly based water purification control methods disclosed in the first aspect of the invention.

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

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 diagram of a method for controlling water purification based on dual filter assemblies according to an embodiment of the present invention;

FIG. 2 is a schematic flow diagram of another method for controlling water purification based on dual filtration assemblies according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a dual filter assembly based water purification system according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of another dual filter assembly based water purification system according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a water purifying control device based on a double filter assembly according to an embodiment of the present invention.

The reference numerals in the drawings represent the following meanings: a first filter element group 1; a second filter element group 2; a supercharging device 3; a first water quality detection device 4; a front-end device 5; a waste water return valve assembly 6; a first pure water return valve assembly 7; a second pure water return valve assembly 8; a pure water valve assembly 9; a wastewater proportioning device 10; a second water quality detection device 11; a third water quality detection device 12; a fourth water quality detection device 13; a sixth water quality detection device 14; a seventh water quality detecting device 15; a fifth water quality detection device 16; a waste valve assembly 17; a first pure water reflux cross point A; a second pure water reflux cross point B; a third pure water reflux cross point C; a first wastewater reflux crossover point D; and the second wastewater flows back to the cross point E.

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 water purifying control method and a water purifying control device based on double filter assemblies, which can provide a multi-stage flushing and water preparing control mechanism, adopt the structure of the double filter assemblies, achieve the aim of quick flushing and save the water consumption in the flushing process through the flushing operation among filter unit groups, so as to effectively flush and prepare water for a water purifying system, obviously improve the intelligent control level of the water purifying system, improve the flushing efficiency of a filter element, improve the water yield of the water purifying system, improve the water quality of head cup water and avoid the waste of water resources. The following will explain in detail.

Example 1

Referring to fig. 1, fig. 1 is a flow chart of a water purifying control method based on a dual filter assembly according to an embodiment of the invention. As shown in fig. 1, the double filter assembly-based water purification control method may include the following operations:

101. judging whether the water producing branch circuit meets the first flushing condition.

In the embodiment of the invention, the water purification system comprises a raw water branch, a supercharging device, a water production branch, a wastewater discharge branch and a pure water discharge branch, wherein the raw water branch is provided with the supercharging device, the supercharging device is used for generating water pressure difference, the supercharging device is positioned at the upstream of the water production 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 first wastewater outlet is connected with the second filter element water inlet, the first pure water outlet and the second pure water outlet are both connected with the pure water discharge branch, the first pure water outlet is also connected with a first pure water reflux branch, the second pure water outlet is also connected with a second pure water reflux branch, and the second wastewater outlet is connected with the wastewater discharge branch. The raw water branch is also provided with a front device, the front device is positioned at the upstream of the pressurizing device, and the second waste water outlet is also connected with a waste water backflow branch. The raw water flows through the front device and is pressurized by the pressurizing device, then is input into the first filtering unit group, is filtered into pure water and waste water by the first filtering unit group, and the pure water can flow back to the pressurizing device through the first pure water backflow branch and is input into the water producing branch, and can be discharged through the pure water discharge branch; the waste water can be input into the second filtering unit group, and is continuously filtered into pure water and waste water by the second filtering unit group, the pure water can be input into the water producing branch through the second pure water reflux branch to the supercharging device, and can be discharged through the pure water discharging branch, and the waste water can be directly discharged through the waste water discharging branch. The method of the invention needs to judge whether the water producing branch circuit meets the flushing condition, namely whether the filter element meets the flushing condition, and the flushing operation is started when the flushing condition is met. For example, after a user accumulates a certain volume of water, the flushing operation is started by detecting a change in TDS at the wastewater outlet to a certain value. In the embodiment of the invention, the front device is used for buffering water input by the raw water branch and/or the pure water reflux branch. The front device may include a single-cavity water storage device, a multi-cavity water storage device, an air bag water storage device, a filtering device, and the like, and the embodiment of the invention is not limited. In addition, the present invention is not limited to the capacity of the front-end device, but preferably, the capacity of the front-end device is not fixed and is adjustable.

102. And when the water producing branch circuit meets the first flushing condition, controlling the water purifying system to execute the first flushing operation.

In the embodiment of the invention, when the water producing branch circuit is judged to meet the first flushing condition, the first filter element component and/or the second filter element component are/is required to be flushed. And controlling the water purification system to execute a first flushing operation, wherein the first flushing operation is used for respectively refluxing pure water generated by the first filtering unit group and the second filtering unit group to the supercharging device through the first pure water reflux branch and the second pure water reflux branch and then inputting the pure water to the water production branch so as to flush the first filter element component and the second filter element component, and reducing the concentration of wastewater in the first filter element component and the second filter element component.

103. Judging whether the water producing branch circuit meets the water producing condition.

104. When the water producing branch circuit meets the water producing condition, controlling the water purifying system to execute the water producing in the first stage and the water producing in the second stage.

105. And controlling the water purifying system to execute the first water making operation when the first stage water making is carried out.

In the embodiment of the invention, when water production in the first stage is performed, the water purification system is controlled to perform a first water production operation, wherein the first water production operation is used for controlling pure water generated by the second filter unit group to flow back to the pressurizing device through the second pure water backflow branch and then to be input into the first filter unit group, so that pure water generated by the first filter unit group is discharged through the pure water discharge branch, namely, pure water generated by the second filter unit group is recycled at the moment, and raw water output from the front-end device is mixed and then input into the first filter unit group to prepare pure water.

106. And controlling the water purifying system to execute a second water making operation when the second stage of water making is carried out.

In the embodiment of the invention, when water production in the second stage is performed, the water purification system is controlled to perform a second water production operation, and the second water production operation is used for respectively discharging pure water generated by the first filter unit group and the second filter unit group through the pure water discharge branch, namely, simultaneously preparing pure water by the double filter assemblies.

Therefore, the method described by the embodiment of the invention can provide a multi-stage flushing and water production control mechanism, adopts a structure of double filter assemblies, achieves the purpose of rapid flushing by flushing operation among the filter unit groups, saves water consumption in the flushing process, effectively flushes and produces water for the water purification system, obviously improves the intelligent control level of the water purification system, improves the flushing efficiency of the filter element, improves the water yield of the water purification system, improves the water quality of the cup water, and avoids the waste of water resources.

In another alternative embodiment, the method may further comprise:

judging whether the water production of the first stage is finished when the water production of the first stage is carried out, and starting the water production of the second stage when the water production of the first stage is judged to be finished;

Wherein, judge whether the water production of first stage is accomplished, include:

judging whether the first water quality value of the second wastewater outlet exceeds a second water quality threshold value, and determining that the water production of the first stage is completed when the second water quality value of the second wastewater outlet exceeds the second water quality threshold value.

In the embodiment of the invention, the demarcation point between the water making process of the first stage and the water making process of the second stage can be controlled according to the preset control mode. The preset control mode may be a time mode, a water quality module, a mixture of a time mode and a water quality mode, or the like, and the embodiment of the invention is not limited.

Therefore, the method described by the embodiment of the invention can adopt the structure of the double filter assemblies at the same time, achieves the aim of rapid flushing and saves the water consumption in the flushing process through the flushing operation among the filter unit groups, simultaneously provides a flexible control mode, realizes the accurate segmentation of the water preparation stage, is beneficial to realizing the fine regulation and control level of the water preparation process, and further improves the water yield of the water purification system.

In yet another alternative embodiment, determining whether the water producing branch meets the first flush condition may include the operations of:

judging whether the third water quality value of the first wastewater outlet exceeds a fifth water quality threshold, and determining that the water producing branch meets a first flushing condition when the third water quality value exceeds the fifth water quality threshold; or alternatively, the process may be performed,

judging whether the first water quality value of the second wastewater outlet exceeds a sixth water quality threshold, and determining that the water producing branch meets a first flushing condition when the first water quality value exceeds the sixth water quality threshold; or alternatively, the process may be performed,

judging whether the fourth water quality value of the first pure water outlet exceeds a seventh water quality threshold value, and determining that the water producing branch meets the first flushing condition when the fourth water quality value exceeds the seventh water quality threshold value; or alternatively, the process may be performed,

judging whether the fifth water quality value of the second pure water outlet exceeds an eighth water quality threshold, and determining that the water producing branch meets the first flushing condition when the fifth water quality value exceeds the eighth water quality threshold; or alternatively, the process may be performed,

judging whether the sixth water quality value of the pure water discharge branch circuit exceeds a ninth water quality threshold value, and determining that the water producing branch circuit meets the first flushing condition when judging that the sixth water quality value exceeds the ninth water quality 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 water producing branch is finished in the last flushing exceeds a third preset duration, and determining that the water producing branch meets a first flushing condition when the time difference between the current time point and the time point when the water producing branch is finished in the last flushing exceeds the third preset duration; or alternatively, the process may be performed,

judging whether the working time length of the water producing branch exceeds a fourth preset time length, and determining that the water producing branch meets a first flushing condition when the working time length of the water producing branch exceeds the fourth preset time length, wherein the working time length comprises the total time length of single water producing working time length or the latest N water producing working time lengths; or alternatively, the process may be performed,

judging whether the water production amount of the water producing branch exceeds a preset water amount, and determining that the water producing branch meets a first flushing condition when judging that the water production amount of the water producing branch exceeds the preset water amount, wherein the water production amount comprises the water production amount of a single time or the total water production amount of the latest N times; or alternatively, the process may be performed,

judging whether the water production times of the water production branch circuit exceeds preset water production times, and determining that the water production branch circuit meets a first flushing condition when judging that the water production times of the water production branch circuit exceeds the preset water production times, wherein the water production times comprise the sum of the water production times between the current time point and the time point when the last flushing of the water production branch circuit is finished or the total water production times in the water production life cycle of the water production branch circuit.

Therefore, the method described by the embodiment of the invention can provide a multi-stage waterway control mechanism, adopts a structure of double filter assemblies, achieves the aim of rapid flushing and saves the water consumption in the flushing process through flushing operation among the filter unit groups, and also provides a plurality of methods for detecting whether the filter element meets the flushing condition or not, 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 system is improved.

Example two

Referring to fig. 2, fig. 2 is a schematic flow chart of another water purifying control based on a dual filter assembly according to an embodiment of the present invention. As shown in fig. 2, the dual filter assembly-based water purification control method may include the following operations:

201. judging whether the water producing branch circuit meets the first flushing condition.

202. And when the water producing branch circuit meets the first flushing condition, controlling the water purifying system to execute the first flushing operation.

203. Judging whether the water producing branch circuit meets a second flushing condition or not;

204. and when the water producing branch circuit meets the second flushing condition, controlling the water purifying system to execute the second flushing operation.

In the embodiment of the invention, when judging that the water producing branch circuit meets the second flushing condition, the water purifying system is controlled to execute the second flushing operation; the second flushing operation is used for controlling the waste water backflow branch to execute first waste water backflow operation, and the first waste water backflow operation is used for backflow of waste water discharged from the second waste water outlet to the front-end device so as to replace raw water buffered in the front-end device and push out pure water mixed with the pure water backflow in the first flushing operation to be input to the supercharging device and then input to the water production branch to flush the first filter element component and the second filter element component.

In the embodiment of the invention, when the second flushing operation is performed, the pure water discharge branch is closed, the waste water with lower concentration produced by the water production branch flows back to the upstream of the front device through the waste water backflow branch, flows into the front device to replace raw water in the waste water, is mixed with pure water produced by the water production branch and returned through the first pure water backflow branch and the second pure water backflow branch and is input into the pressurizing device, and then the first filter element component and the second filter element component are flushed, so that the concentration of the waste water in the filter element component in the water production branch is further reduced, the water quality of the water discharged from the next use is improved, and part of low-concentration waste water is recovered, so that the purpose of saving water is achieved.

205. Judging whether the water producing branch circuit meets the water producing condition.

206. When the water producing branch circuit meets the water producing condition, controlling the water purifying system to execute the water producing in the first stage and the water producing in the second stage.

207. When the water making in the first stage is carried out, the water purifying system is controlled to execute the first water making operation, and the waste water backflow branch is controlled to execute the second waste water backflow operation.

In the embodiment of the invention, when water production in the first stage is performed, the waste water reflux branch is controlled to execute the second waste water reflux operation, wherein the second waste water reflux operation is used for controlling the waste water reflux branch to reflux the waste water discharged from the second waste water outlet to the front device so as to replace raw water buffered in the front device, push out pure water mixed with pure water refluxed in the first water production operation and input the pure water into the pressurizing device, and then input the pure water into the first filtering unit group so as to discharge pure water generated by the first filtering unit group through the pure water discharge branch.

In the embodiment of the invention, the pure water generated by the second filtering unit group is recycled before being recycled to the pressurizing device, the pure water generated by the first filtering unit group is discharged through the pure water discharge branch, the quality of the discharged water is improved, and meanwhile, the low-concentration wastewater is returned to the front device through the wastewater return branch, so that the purpose of saving water is achieved.

208. And controlling the water purifying system to execute a second water making operation when the second stage of water making is carried out.

In the embodiment of the present invention, for other descriptions of step 201 to step 208, please refer to the detailed descriptions of step 101 to step 106 in the first embodiment, respectively, and the description of the embodiment of the present invention is omitted.

Therefore, the method described by the embodiment of the invention can provide a multi-stage waterway control mechanism, adopts a structure of double filter assemblies, achieves the aim of rapid flushing and saves the water consumption in the flushing process through flushing operation among the filter unit groups, and simultaneously carries out the operation of mixing water and preparing water through waste water backflow circulation, thereby forming the aim of reutilizing the mixed water in the front device and the waste water in the water preparing process, realizing secondary water saving, solving the problem of poor water quality value of the head cup water when a user takes water, improving the water yield of the water purifier and avoiding the waste of water resources.

In an alternative embodiment, determining whether the water producing branch meets the second flush condition may include the operations of:

Judging whether the first water quality value of the second wastewater outlet is lower than a first water quality threshold value, and determining that the water producing branch meets the second flushing condition when judging that the first water quality value of the second wastewater outlet is lower than the first water quality threshold value.

In the embodiment of the invention, the accurate connection process between the flushing operation of the first stage and the flushing operation of the second stage can be realized by judging whether the water producing branch meets the second flushing condition. In the embodiment of the invention, the judgment of whether the water producing branch meets the second flushing condition can be realized by the preset control mode. The preset control mode may be a time mode, a water quality module, a mixture of a time mode and a water quality mode, or the like, and the embodiment of the invention is not limited.

Therefore, the method described by the embodiment of the invention can accurately control the accurate connection nodes and processes among various stages through various control modes, improves the control precision in the filter element flushing process, further realizes the accurate flushing of the filter element, avoids unnecessary flushing operation, further improves the filter element flushing effect and improves the water yield of the water purifier.

In another alternative embodiment, the method may further comprise the operations of:

When the water is produced in the first stage or in the second stage, the waste water backflow branch is controlled to execute closing operation when the first water quality value of the second waste water outlet exceeds the third water quality threshold value or when the second water quality value of the water inlet of the first filter element exceeds the fourth water quality threshold value.

In the embodiment of the invention, whether in the water making process of the first stage or the water making process of the second stage, the opening or closing of the waste water reflux branch can be controlled by monitoring whether the water quality value of the waste water outlet exceeds the standard or whether the water quality value of the water inlet of the filter element exceeds the standard. Meanwhile, the use proportion of wastewater circulation can be adjusted according to the parameters, so that the accurate utilization of wastewater can be realized.

Therefore, the method described by the embodiment of the invention can provide a flexible control mode, dynamically adjust the use proportion of wastewater circulation while not increasing the salinity of the filter element, achieve the level of fine regulation and control of wastewater backflow, be favorable for realizing the accurate flushing of the filter element, simultaneously improve the recycling ratio of wastewater, and further improve the water production rate of the water purification system.

Example III

Referring to fig. 3, fig. 3 is a schematic structural diagram of a water purifying system based on a dual filter assembly according to an embodiment of the present invention. As shown in fig. 3, the water purification system includes a raw water branch, a water producing branch, a waste water discharging branch and a pure water discharging branch, wherein the raw water branch is provided with a pressurizing device 3, the pressurizing device 3 is used for generating water pressure difference, so that pressurized water can permeate through a filter element, the pure water backflow branch and the waste water backflow branch can be controlled, the pressurizing device 3 is positioned at the upstream of the water producing branch, the filter element can be a common filter element or a reverse osmosis filter element, and the embodiment of the invention is not limited. The water purification system may further include:

The water producing branch comprises a first filter unit group 1 and a second filter unit group 2, wherein the first filter unit group 1 comprises a first filter element water inlet, a first filter element component, a first waste water outlet and a first pure water outlet, the second filter unit group 2 comprises a second filter element water inlet, a second filter element component, a second waste water outlet and a second pure water outlet, the first waste water outlet is connected with the second filter element water inlet, and the first pure water outlet and the second pure water outlet are both connected with the pure water discharging branch;

the first pure water reflux branch circuit is intersected with the pure water discharge branch circuit at a first pure water reflux intersection point A, and the first pure water reflux branch circuit is intersected with the raw water branch circuit at a second pure water reflux intersection point B; one end of the second pure water reflux branch is connected to the second pure water outlet, the other end of the second pure water reflux branch and the first pure water reflux branch are intersected at a third pure water reflux intersection point C, and the third pure water reflux intersection point C is positioned between the first pure water reflux intersection point A and the second pure water reflux intersection point B;

the first pure water reflux branch and the second pure water reflux branch are used for respectively refluxing pure water generated by the first filtering unit group 1 and the second filtering unit group 2 to the supercharging device 3 and inputting the pure water to the water generating branch so as to flush the first filter element component and the second filter element component when judging that the water generating branch meets the first flushing condition;

The water producing branch is used for producing water in the first stage and producing water in the second stage when judging that the water producing branch meets the water producing condition;

when water is produced in the first stage, the second pure water backflow branch is also used for backflow of pure water generated by the second filter unit group 2 to the pressurizing device 3 and then inputting the pure water into the first filter unit group 1, so that pure water generated by the first filter unit group 1 is discharged through the pure water discharge branch;

wherein, when the water production of the second stage is carried out, the water producing branch is used for discharging pure water generated by the first filtering unit 1 group and the second filtering unit group 2 respectively through the pure water discharging branch.

Therefore, the water purification system described in the embodiment of the invention can provide a multi-stage flushing and water production control mechanism, adopts a structure of double filter assemblies, achieves the purpose of rapid flushing by flushing operation among filter unit groups, saves water consumption in the flushing process, effectively flushes and produces water for the water purification system, remarkably improves the intelligent control level of the water purification system, improves the flushing efficiency of a filter element, improves the water yield of the water purification system, improves the water quality of cup water, and avoids the waste of water resources.

In an alternative embodiment, as shown in fig. 4, the water purification system further includes:

A waste water reflux branch, wherein the waste water reflux branch and the waste water discharge branch are intersected at a first waste water reflux intersection point D, and the waste water reflux branch and the raw water branch are intersected at a second waste water reflux intersection point E; the second wastewater return junction E is located upstream of the pressurizing device 3;

the raw water branch is provided with a front device 5, and the front device 5 is used for buffering raw water of the raw water branch or/and discharging returned wastewater from a second wastewater outlet; the front device 5 is positioned downstream of the second wastewater reflux intersection point E and upstream of the second pure water reflux intersection point B;

and the waste water reflux branch is used for refluxing waste water discharged from the second waste water outlet to the front device 5 when judging that the water production branch meets the second flushing condition, so that the waste water buffered in the front device 5 is replaced and then pushed out, pure water refluxed by the first pure water reflux branch and the second pure water reflux branch is mixed and input to the supercharging device 3, and then the pure water is input to the water production branch to flush the first filter element component and the second filter element component.

In another alternative embodiment, a first pure water reflux valve assembly 7 and a second pure water reflux valve assembly 8 are arranged on the first pure water reflux branch, the first pure water reflux valve assembly 7 is positioned between the first pure water reflux intersection point A and the third pure water reflux intersection point C, and the second pure water reflux valve assembly 8 is positioned between the second pure water reflux intersection point B and the third pure water reflux intersection point C; a waste water reflux valve component 6 is arranged on the waste water reflux branch; the pure water discharge branch is provided with a pure water valve component 9; a waste water valve assembly 17 is provided on the waste water discharge branch.

In yet another alternative embodiment, the water purification system further comprises:

wherein, water quality testing device includes:

a first water quality detection device 4 arranged at the second wastewater outlet; or/and the combination of the two,

the second water quality detection device 11 is arranged on the waste water return branch; or/and the combination of the two,

a third water quality detection device 12 is arranged on the waste water discharge branch.

Optionally, when the waste water backflow branch and the waste water discharge branch share part of the branch, the waste water backflow branch and the branch shared by the waste water discharge branch are provided with a waste water proportion device 10, and the waste water proportion device 10 is used for adjusting the water quantity proportion of waste water discharged by the waste water outlet to flow into the waste water backflow branch and the waste water discharge branch respectively.

Optionally, a fourth water quality detection device 13 is arranged at the first wastewater outlet, and the fourth water quality detection device 13 is used for detecting the water quality condition of the first wastewater outlet.

Optionally, a fifth water quality detecting device 16 is disposed on the first pure water return branch, the fifth water quality detecting device 16 is located between the first pure water outlet and the first pure water return intersection point a, and the fifth water quality detecting device 16 is used for detecting the water quality condition of the first pure water outlet.

Optionally, a sixth water quality detecting device 14 is disposed on the second pure water return branch, the sixth water quality detecting device 14 is located between the second pure water outlet and the third pure water return intersection C, and the sixth water quality detecting device 14 is used for detecting the water quality condition of the second pure water outlet.

Optionally, a seventh water quality detection device 15 is disposed on the raw water branch, the seventh water quality detection device 15 is located between the second pure water backflow intersection B and the water inlet of the first filter element, and the seventh water quality detection device 15 is used for detecting the water quality condition of the water inlet of the first filter element.

Example IV

Referring to fig. 5, fig. 5 is a schematic structural diagram of a water purifying control device based on a dual filter assembly according to an embodiment of the present invention. The device described in fig. 5 may be a stand-alone device or may be integrated into a water purifying apparatus, which is not limited in the embodiment of the present invention. As shown in fig. 5, the dual filter assembly-based water purification control device may include:

a memory 401 storing executable program codes;

a processor 402 coupled with the memory 401;

the processor 402 invokes the executable program code stored in the memory 401 to perform some or all of the steps in the dual filter assembly based water purification 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 purifying control method based on the double filter assembly disclosed in the first embodiment or the 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 water purifying control method and device based on double filter components, which are disclosed by the embodiment of the invention only 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 method is applied to a water purification system, the water purification system comprises a raw water branch, a supercharging device, a water producing branch, a waste water discharging branch and a pure water discharging branch, the raw water branch is provided with the supercharging device, the supercharging device is used for generating water pressure difference, the supercharging device is located at the upstream of the water producing branch, the method is characterized in that the water producing branch comprises a first filter element group and a second filter element group, the first filter element 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 element 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 first waste water outlet is connected with the second filter element water inlet, the first pure water outlet and the second pure water outlet are connected with the pure water discharging branch, the first pure water outlet is also connected with a first pure water reflux branch, the second pure water outlet is also connected with a second pure water reflux branch, and the waste water discharging branch comprises a waste water discharging method:

2. The method for controlling water purification based on double filtration assemblies according to claim 1, wherein a pre-device is further arranged on the raw water branch, the pre-device is positioned at the upstream of the pressurizing device, and the second waste water outlet is further connected with a waste water backflow branch;

3. The dual filter assembly based water purification control method of claim 2, wherein in performing the first stage of water production, the method further comprises:

4. A dual filter assembly based water purification control method according to claim 2 or 3, wherein said determining whether the water producing branch meets a second flushing condition comprises:

5. The dual filter assembly based water purification control method of claim 4, further comprising:

6. The dual filter assembly based water purification control method of claim 5, further comprising:

7. The dual filter assembly based water purification control method of claim 3, wherein said determining whether the water producing branch meets a first flush condition comprises:

8. The utility model provides a water purification system based on two filtration subassembly, water purification system includes raw water branch road, produces water branch road, waste water emission branch road and pure water emission branch road, be equipped with supercharging device on the raw water branch road, supercharging device is used for producing the water pressure difference, supercharging device is located produce the upper reaches of water branch road, its characterized in that, water purification system still includes:

9. The dual filter assembly based water purification system of claim 8, further comprising:

and the waste water reflux branch is used for refluxing waste water discharged from the second waste water outlet to the front device when judging that the water production branch meets a second flushing condition, so that the waste water is pushed out after the raw water buffered in the front device is replaced, and pure water refluxed by the first pure water reflux branch and the second pure water reflux branch is mixed and input to the supercharging device, and then the pure water is input to the water production branch so as to flush the first filter element component and the second filter element component.

10. The dual filter assembly based water purification system of claim 9, wherein the first water return branch is provided with a first water return valve assembly located between the first water return intersection and the third water return intersection, a second water return valve assembly located between the second water return intersection and the third water return intersection; the waste water reflux branch is provided with a waste water reflux valve component; the pure water discharge branch is provided with a pure water valve component; and a wastewater valve assembly is arranged on the wastewater discharge branch.

11. The dual filter assembly based water purification system of claim 9 or 10, further comprising:

wherein, water quality testing device includes:

12. The dual filtration assembly based water purification system of claim 11, wherein when the waste water return branch and the waste water discharge branch share a partial branch, the waste water return branch and the waste water discharge branch share a branch provided with waste water ratio means for adjusting the ratio of the amounts of waste water discharged from the waste water outlet to the waste water return branch and the waste water discharge branch, respectively.

13. The dual filter assembly based water purification system of claim 12, wherein a fourth water quality detection device is provided at the first wastewater outlet, the fourth water quality detection device being configured to detect a water quality condition of the first wastewater outlet.

14. The dual filter assembly based water purification system of claim 13, wherein a fifth water quality detection device is disposed on the first purified water return branch, the fifth water quality detection device being located between the first purified water outlet and the first purified water return junction, the fifth water quality detection device being configured to detect a water quality condition of the first purified water outlet.

15. The dual filter assembly based water purification system of claim 14, wherein a sixth water quality detection device is disposed on the second purified water return branch, the sixth water quality detection device being located between the second purified water outlet and the third purified water return junction, the sixth water quality detection device being configured to detect a water quality condition of the second purified water outlet.

16. The dual filter assembly based water purification system of claim 15, wherein a seventh water quality detection device is disposed on the raw water branch, the seventh water quality detection device being located between the second pure water backflow junction and the first filter inlet, the seventh water quality detection device being configured to detect a water quality condition of the first filter inlet.