CN215667262U

CN215667262U - Water purifier

Info

Publication number: CN215667262U
Application number: CN202122517926.6U
Authority: CN
Inventors: 陈小平; 李大川; 李中扬; 吕苏; 晏博; 董红晨
Original assignee: Foshan Viomi Electrical Technology Co Ltd
Current assignee: Foshan Viomi Electrical Technology Co Ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-01-28
Anticipated expiration: 2031-10-19

Abstract

The utility model discloses a water purifier and a control method, wherein the water purifier comprises a water production branch, a post-device, a pure water backflow branch, a wastewater backflow branch and a pressurizing device, wherein the water production branch comprises a filter element water inlet, a filter element, a pure water outlet and a wastewater outlet; when the filter element meets the flushing condition, flushing the filter element in a first stage and/or a second stage; when the washing operation is completed and a water taking instruction is received, the water production branch is controlled to execute the water making operation according to a preset water making mode, and pure water discharged from the pure water outlet is cached to the post-device to take water in the first stage and/or the second stage. Therefore, the utility model can solve the problem of poor water quality of the first cup of water by adopting a mode of caching pure water by the rear device, and the water production and flushing of the water purifier are carried out by a multi-stage water path control mechanism combining pure water and waste water circulation, so that the intelligent control level of the water purifier is obviously improved.

Description

Water purifier

Technical Field

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

Background

With the rapid development of water purification technology, water purifiers filtering through devices such as reverse osmosis pressure membranes are increasingly popular. However, when the water purifier is left standing for a while, ions on the wastewater side of the reverse osmosis pressure filter element permeate the pure water side, and the total dissolved solids TDS of the pure water rises. When the purifier is restarted when the water is fetched, the TDS value of the pure water produced in the earlier stage is higher, and the TDS of the first cup of water is high, so that the first cup of water of the purifier can not reach the drinking standard requirement.

Therefore, it is very important to provide a water purifier and a control method to solve the problem that the first cup of water cannot be drunk.

SUMMERY OF THE UTILITY MODEL

The utility model provides a water purifier and a control method, and can solve the problem of poor water quality of first cup water by adopting a mode of caching pure water by a rear device.

In order to solve the technical problems, the utility model discloses a control method of a water purifier in a first aspect, wherein the water purifier comprises a raw water branch, a water production branch, a wastewater discharge branch and a pure water discharge branch, the water production branch comprises a filter core water inlet, a filter core, a pure water outlet and a wastewater outlet, and the control method is characterized in that the water purifier further comprises a post-device, a pure water backflow branch and a wastewater backflow branch, wherein the pure water backflow branch comprises a first pure water backflow branch and/or a second pure water backflow branch, the first pure water backflow branch is used for enabling pure water discharged from the pure water outlet to flow back to the filter core water inlet, the second pure water backflow branch is used for enabling pure water discharged from the post-device to flow back to the filter core water inlet, a pressurizing device is arranged on the raw water branch, and the pressurizing device is used for generating water pressure difference, the pressure boosting device is located upstream of the water production branch, the method comprising:

judging whether the filter element meets a washing condition or not, and controlling the pure water backflow branch to execute pure water backflow operation according to a preset washing mode when the filter element meets the washing condition, wherein the pure water backflow operation is used for returning pure water to the pressurization device and then inputting the pure water to a water inlet of the filter element so as to wash the filter element in a first stage and/or a second stage;

controlling the wastewater discharge branch to perform a wastewater discharge operation to discharge all wastewater while the flushing of the first stage is performed;

determining a first adjusting parameter of the wastewater backflow branch when the second stage flushing is carried out; according to a first adjusting parameter of the wastewater backflow branch, controlling the wastewater discharged from the wastewater outlet to flow back according to a matched proportion so as to flush the filter element at the second stage;

after the washing operation is finished, judging whether a water taking instruction is received or not, and when the water taking instruction is judged to be received, controlling the water production branch to execute water making operation according to a preset water making mode, and caching the pure water discharged from the pure water outlet to the post-positioned device to take water in a first stage and/or a second stage;

when water is taken in the first stage, controlling all the pure water discharged from the pure water outlet to be cached in the post-positioned device, and simultaneously determining a second adjusting parameter of the wastewater backflow branch according to a preset water making mode; according to a second adjusting parameter of the wastewater backflow branch, controlling the wastewater discharged from the wastewater outlet to flow back to the pressurizing device and then input into the water inlet of the filter element to produce water;

when the water is taken in the second stage, controlling the pure water part discharged from the pure water outlet to be cached in the post-positioned device, returning the rest part to the pressurizing device and then inputting the part to the water inlet of the filter element for water production, and simultaneously controlling the wastewater discharge branch to execute the wastewater discharge operation so as to discharge all wastewater.

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

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

wherein the determining whether the flushing of the first stage is completed comprises:

judging whether the real-time water quality value of the wastewater outlet is less than or equal to a first wastewater quality threshold value, and judging that the flushing of the first stage is finished when the real-time water quality value of the wastewater outlet is less than or equal to the first wastewater quality threshold value; alternatively, the first and second electrodes may be,

and judging whether the duration of the first-stage flushing exceeds a first preset wastewater duration, and judging that the first-stage flushing is completed when judging that the duration of the first-stage flushing exceeds the first preset wastewater duration.

As an optional implementation manner, in the first aspect of the present invention, the controlling the pure water backflow branch to perform the pure water backflow operation according to the preset flushing mode includes:

when the pure water backflow branch comprises the first pure water backflow branch, controlling the pure water backflow branch to backflow the pure water discharged from the pure water outlet to the water inlet of the filter element according to a preset flushing mode;

when the pure water backflow branch comprises the second pure water backflow branch, the pure water backflow branch is controlled to backflow the pure water discharged by the post device to the water inlet of the filter element according to a preset flushing mode.

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

judging whether the preset water making mode is a time mode or not;

when the preset water making mode is judged to be the time mode, determining a second adjusting parameter of the wastewater backflow branch according to the preset water making mode, wherein the second adjusting parameter comprises first water making time and second water making time;

the first water making time length is used for indicating the duration of controlling the wastewater backflow branch to backflow all wastewater discharged from the wastewater outlet to the supercharging device and then inputting the wastewater into the water inlet of the filter element;

and the second water making time is used for representing the duration of controlling the wastewater backflow branch to perform backflow of the wastewater discharged from the wastewater outlet to the pressurizing device according to the matched proportion and then inputting the wastewater into the water inlet of the filter element.

judging whether the preset water making mode is a water quality mode or not;

when the preset water making mode is judged to be the water quality mode, determining a second adjusting parameter of the wastewater backflow branch according to the real-time water quality value of the wastewater outlet;

wherein, according to the real-time quality of water value of waste water export, confirm the second adjustment parameter of waste water backward flow branch road includes:

judging the size relation between the real-time water quality value of the wastewater outlet and a first water quality threshold value and a second water quality threshold value when the water production branch performs water production operation; wherein the first produced water quality threshold is less than the second produced water quality threshold;

when the real-time water quality value of the wastewater outlet is judged to be smaller than the second water quality threshold value, determining the wastewater backflow proportion of the wastewater backflow branch according to the size relationship between the real-time water quality value and the first water quality threshold value and the second water quality threshold value;

and generating a second adjusting parameter of the wastewater backflow branch according to the wastewater backflow proportion.

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

wherein said determining whether the first stage of water fetching is complete comprises:

judging whether the duration of the first-stage water taking exceeds a first pure water preset duration or not, and judging that the first-stage water taking is finished when the duration of the first-stage water taking exceeds the first pure water preset duration; alternatively, the first and second electrodes may be,

and judging whether the real-time water quality value of the pure water outlet is greater than or equal to a first pure water quality threshold value, and judging that the water taking in the first stage is finished when the real-time water quality value of the pure water outlet is greater than or equal to the first pure water quality threshold value.

As an optional implementation manner, in the first aspect of the present invention, the determining whether the filter cartridge satisfies a flushing condition includes:

judging whether a first water quality value of the wastewater outlet exceeds a first water quality threshold, and judging that the filter element meets a flushing condition when the first water quality value exceeds the first water quality threshold; alternatively, the first and second electrodes may be,

judging whether a second water quality value of the water inlet of the filter element exceeds a second water quality threshold value or not, and judging that the filter element meets a flushing condition when the second water quality value exceeds the second water quality threshold value; alternatively, the first and second electrodes may be,

judging whether the time difference between the current time point and the time point of the last washing end of the water production branch exceeds a first preset time length or not, and judging that the filter element meets the washing condition when judging that the time difference between the current time point and the time point of the last washing end of the water production branch exceeds the first preset time length; alternatively, the first and second electrodes may be,

judging whether the working time of the water production branch exceeds a second preset time, and judging that the filter element meets a flushing condition when the working time of the water production branch exceeds the second preset time, wherein the working time comprises the working time of single water production or the total time of the latest N times of water production; alternatively, the first and second electrodes may be,

judging whether the water production amount of the water production branch exceeds a preset water amount or not, and judging that the filter element meets a flushing condition when the water production amount of the water production branch exceeds the preset water amount, wherein the water production amount comprises the water production amount of a single time or the water production amount of the last N times; alternatively, the first and second electrodes may be,

judging whether the third water quality value of the pure water outlet exceeds a third water quality threshold, and judging that the filter element meets the flushing condition when the third water quality value of the pure water outlet exceeds the third water quality threshold; alternatively, the first and second electrodes may be,

judging whether the water making times of the water producing branch exceed preset water making times or not, and judging that the filter element meets a flushing condition when the water making times of the water producing branch exceed the preset water making times, wherein the water making times comprise the sum of the water making times between the current time point and the time point when the water producing branch is flushed for the last time or the total water making times in the water producing life cycle of the water producing branch.

The utility model discloses a water purifier in a second aspect, which comprises a raw water branch, a water production branch, a wastewater discharge branch and a pure water discharge branch, wherein the water production branch comprises a filter core water inlet, a filter core, a pure water outlet and a wastewater outlet, and the water purifier is characterized by further comprising:

the raw water branch is provided with a supercharging device, the supercharging device is used for generating water pressure difference, and the supercharging device is positioned at the upstream of the water production branch;

the pure water discharge branch is provided with a post-device, and the post-device is used for caching the pure water prepared by the water production branch so as to take water in a first stage and/or a second stage when a water taking instruction is received;

the pure water backflow branch is used for returning pure water to the pressurization device and then inputting the pure water into the water inlet of the filter element to flush the filter element in the first stage and/or the second stage according to a preset flushing mode when the filter element is judged to meet the flushing condition; the pure water backflow branch comprises a first pure water backflow branch and/or a second pure water backflow branch, the first pure water backflow branch is used for returning pure water discharged from the pure water outlet to the supercharging device and then inputting the pure water into the water inlet of the filter element, and the second pure water backflow branch is used for returning pure water discharged from the post device to the supercharging device and then inputting the pure water into the water inlet of the filter element; wherein the first pure water return branch and the pure water discharge branch intersect at a first pure water return intersection, the first pure water return branch and the raw water branch intersect at a second pure water return intersection, and the first pure water return intersection is located between the pure water outlet and the post-device; the second pure water backflow branch and the pure water discharge branch are intersected at a third pure water backflow intersection point, the second pure water backflow branch and the raw water branch are intersected at a fourth pure water backflow intersection point, and the third pure water backflow intersection point is positioned at the downstream of the post-device; the second pure water reflux intersection and the fourth pure water reflux intersection are located upstream of the pressure-increasing means;

a wastewater return branch, wherein the wastewater return branch and the wastewater discharge branch are intersected at a first wastewater return intersection, and the wastewater return branch and the raw water branch are intersected at a second wastewater return intersection; the waste water backflow branch is used for returning the waste water discharged from the waste water outlet to the water production device; the second wastewater return junction is located upstream of the pressure boosting device;

wherein, when the first stage flushing is carried out, the wastewater discharge branch is used for discharging all wastewater; when the second-stage flushing is carried out, the wastewater backflow branch is used for returning the wastewater discharged from the wastewater outlet according to a matched proportion so as to carry out the second-stage flushing on the filter element;

when water is taken in the first stage, the post-device is used for caching all pure water prepared by the water production branch, and the wastewater backflow branch is used for returning wastewater discharged from the wastewater outlet to the boosting device according to a matched proportion and then inputting the wastewater into the water inlet of the filter element to prepare water; when the water is taken in the second stage, the post-device is used for caching partial pure water prepared by the water production branch, the pure water backflow branch is used for returning the rest pure water to the boosting device and then inputting the pure water into the water inlet of the filter element to prepare water, and meanwhile, the wastewater discharge branch is used for discharging all wastewater.

As an alternative embodiment, in the second aspect of the present invention, the pure water return branch is provided with a pure water return valve assembly; a waste water reflux valve component is arranged on the waste water reflux branch; a pure water valve component is arranged on the pure water discharge branch; and a waste water valve component is arranged on the waste water discharge branch.

As an optional implementation manner, in the second aspect of the present invention, the water purifier further includes:

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

wherein, water quality testing device includes:

the first water quality detection device is arranged at the wastewater outlet; and/or the first and/or second light sources,

the second water quality detection device is arranged on the wastewater backflow branch; and/or the first and/or second light sources,

and the third water quality detection device is arranged on the wastewater discharge branch.

As an alternative embodiment, in the second aspect of the present invention, when the waste water return branch and the waste water discharge branch share a part of branch, a waste water proportioning device is disposed on the branch shared by the waste water return branch and the waste water discharge branch, and the waste water proportioning device is configured to adjust a ratio of the amount of waste water discharged from the waste water outlet flowing into the waste water return branch and the waste water discharge branch respectively.

As an optional implementation manner, in the second aspect of the present invention, a fourth water quality detection device is disposed at the water inlet of the filter element of the water production branch, and the fourth water quality detection device is configured to detect a water quality condition of the water inlet of the filter element.

As an optional implementation manner, in the second aspect of the present invention, a fifth water quality detection device is disposed on the raw water branch, the fifth water quality detection device is located downstream of the second wastewater backflow intersection and upstream of the filter element water inlet, and the fifth water quality detection device is configured to detect a water quality condition of mixed water formed by mixing the wastewater discharged from the wastewater outlet with the raw water in the raw water branch after the wastewater flows back.

As an optional implementation manner, in the second aspect of the present invention, a sixth water quality detecting device is disposed on the pure water discharging branch, the sixth water quality detecting device is located between the pure water outlet and the post-device, and the sixth water quality detecting device is configured to detect a water quality condition of the pure water discharged from the pure water outlet.

As an optional implementation manner, in the second aspect of the present invention, a seventh water quality detecting device is disposed on the pure water discharging branch, the seventh water quality detecting device is located between the post-device and the pure water valve assembly, and the seventh water quality detecting device is configured to detect a water quality condition of the pure water discharged by the post-device.

In an alternative embodiment, in the second aspect of the present invention, an eighth water quality detecting device is further disposed on the raw water branch, the eighth water quality detecting device is located upstream of the second wastewater backflow intersection, and the eighth water quality detecting device is configured to detect a water quality condition of raw water in the raw water branch.

As an optional implementation manner, in the second aspect of the present invention, a pre-device is further disposed on the raw water branch, and the pre-device is located downstream of the second wastewater backflow intersection and upstream of the second pure water backflow intersection and the fourth pure water backflow intersection, and the pre-device is configured to buffer raw water of the raw water branch or/and wastewater discharged from the wastewater outlet.

The third aspect of the present invention discloses a water purifier control device, comprising:

a memory storing executable program code;

a processor coupled with the memory;

the processor calls the executable program code stored in the memory to execute part or all of the steps of any water purifier control method disclosed by the first aspect of the utility model.

The fourth aspect of the present invention discloses a computer storage medium, wherein the computer storage medium stores computer instructions, and when the computer instructions are called, the computer instructions are used for executing part or all of the steps in any water purifier control method disclosed in the first aspect of the present invention.

Compared with the prior art, the utility model has the following beneficial effects:

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

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

FIG. 2 is a schematic flow chart illustrating another method for controlling a water purifier according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a water purifier according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of another water purifier disclosed in the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a water purifier control device disclosed in the embodiment of the present invention.

The reference symbols in the figures represent the following meanings: a water production branch 1; a first pure water return valve assembly 2; a wastewater return valve assembly 3; a first water quality detection device 4; a post-device 5; a second pure water return valve assembly 6; a pure water valve assembly 7; a waste water valve assembly 8; a second water quality detection device 9; a third water quality detecting device 10; a wastewater proportioning device 11; an eighth water quality detecting device 12; a seventh water quality detecting device 13; a fourth water quality detection device 14; a fifth water quality detection device 15; a sixth water quality detecting device 16; a pressure boosting device 17; a first pure water reflux intersection A; a second or fourth pure water reflux intersection B; a third pure water reflux intersection E; a first wastewater return junction C; the second wastewater return junction D.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "first," "second," and the like in the description and claims of the present invention and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, article, or article that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively 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 can be included in at least one embodiment of the utility model. The appearances of the phrase 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The utility model discloses a water purifier and a control method, and the water purifier and the control method solve the problem of poor water quality of a first cup of water by adopting a mode of caching pure water by a rear device, and carry out water production and effective flushing on the water purifier by a multi-stage water path control mechanism combining pure water and waste water circulation, thereby obviously improving the intelligent control level of the water purifier, improving the flushing efficiency of a filter element, avoiding the influence of the waste water with too high concentration on the service life of a membrane, improving the water yield of the water purifier, improving the water quality of drinking water and avoiding the waste of water resources. In addition, one or more embodiments of the present invention may be applied to any water purification system, such as a household water purifier, a commercial water purifier, a water purification device for a water purification plant, and the like, and the embodiments of the present invention are not limited thereto.

Example one

Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a control method of a water purifier according to an embodiment of the present invention. As shown in fig. 1, the water purifier control method may include the following operations:

101. and judging whether the filter element meets the flushing condition.

In the embodiment of the utility model, the water purifier described by the utility model comprises a raw water branch, a water production branch, a wastewater discharge branch and a pure water discharge branch, wherein the water production branch comprises a filter element water inlet, a filter element, a pure water outlet and a wastewater outlet, the water purifier also comprises a post device, a pure water backflow branch and a wastewater backflow branch, a pressurizing device for generating water pressure difference is arranged on the raw water branch, the pressurizing device can be used for enabling pressurized water to permeate through the filter element and also can be used for controlling backflow of water in the pure water backflow branch and the wastewater backflow branch, and the pressurizing device is positioned at the upstream of the water production branch. Raw water flows through a raw water branch and is pressurized by a pressurizing device, and then is input into a filter element water inlet of a water production branch, the raw water is filtered into pure water and wastewater by a filter element of the water production branch, the pure water can be input into a post-positioned device through a pure water discharge branch for caching, and then can be discharged through the post-positioned device, and simultaneously can also flow back to the raw water branch through a pure water backflow branch and is input into the water production branch through the pressurizing device; the waste water can flow back to the raw water branch of the supercharging device through the waste water backflow branch and is input into the water production branch, and the waste water can be discharged through the waste water discharge branch. The rear device may include a single-cavity water storage device, a multi-cavity water storage device, an airbag water storage device, a filtering device, and the like, and the embodiment of the present invention is not limited. It should be noted that the present invention is not limited to the capacity of the rear device, and the capacity of the rear device is preferably not fixed but may be adjustable. Preferably, the volume of the rear device is preferably 100ml to 8000ml, if the volume is too small, the efficiency of pure water backflow or filtration is affected, so that a better washing effect cannot be achieved, the purpose of saving water and saving water is difficult to achieve, and if the volume is too large, the volume of the water purifier is affected.

In the embodiment of the utility model, whether the filter element meets the flushing condition needs to be judged, and the flushing operation is started when the flushing condition is met. For example, after the user accumulates a certain volume of water intake, when TDS changes to a certain value by detecting the waste water outlet, the flushing operation is started. For another example, the purifier may initiate a flushing operation at a time (0-1800 seconds) after the end of a complete water production cycle.

102. And when the filter element is judged to meet the washing condition, controlling the pure water backflow branch to execute pure water backflow operation according to a preset washing mode, and washing the filter element in the first stage and the second stage.

In the embodiment of the utility model, when the filter element is judged to meet the flushing condition, the filter element needs to be flushed, and the flushing of the filter element in the embodiment of the utility model is divided into two stages: a first stage flush and a second stage flush. No matter the washing of the first stage or the washing of the second stage, the pure water is required to be controlled to flow back to the pressurizing device along the pure water backflow branch and then is input to the water inlet of the filter element of the water production branch so as to wash the filter element, namely the pure water backflow branch is controlled to execute the pure water backflow operation. The pure water reflux may be a reflux of a part of the pure water or a reflux of the whole pure water, and the embodiment of the present invention is not limited.

Further, in the embodiment of the present invention, the pure water backflow branch may include a first pure water backflow branch and/or a second pure water backflow branch, so the pure water backflow operation may include the first pure water backflow branch being configured to backflow pure water discharged from the pure water outlet to the filter cartridge water inlet, and/or the second pure water backflow branch being configured to backflow pure water discharged from the post-device to the filter cartridge water inlet.

Further, the control mechanism of pure water backflow includes three conditions, namely, when the pure water backflow branch is in front of the post-device (that is, the pure water backflow branch only includes the first pure water backflow branch), the proportion of pure water backflow and discharge can be controlled according to the real-time water quality value of the pure water outlet (or the water quality values of other branches, the preset equivalent time, and the like, which is not limited in the embodiment of the present invention). For example, when the real-time water quality value of the pure water outlet is high, the proportion of pure water backflow is increased, even the pure water backflow is completely increased, and the water quality value after the pure water entering the post-device and the pure water in the post-device are mixed is ensured to be low. Meanwhile, when the filter element is washed by the pure water circulation mode, pure water discharged from the pure water outlet does not pass through the post-device, and the service life of the post-device is prolonged. Secondly, when the pure water backflow branch is behind the post-device (that is, the pure water backflow branch only includes the second pure water backflow branch), the proportion of backflow and discharge of the pure water discharged by the post-device can be controlled according to the real-time water quality value of the pure water outlet (or the water quality values of other branches, the preset equivalent time and the like, which is not limited in the embodiment of the utility model). For example, when the real-time water quality value of the pure water outlet is higher, the proportion of pure water backflow is increased, the water quality value of water taken by a user is ensured to be better, and water is saved to a certain extent. And thirdly, when the two pure water backflow branches exist simultaneously (namely the pure water backflow branch comprises the first pure water backflow branch and the second pure water backflow branch), after a complete water making period is finished for a period of time (0-1800s), when a head cup of water is made, because the water quality of the head cup of water is poor, the pure water in the post-device can be utilized for water taking, the head cup of water made simultaneously can flow back to the filter element through the first pure water backflow branch to make water, the pure water made after the head cup of water is made can continue to be cached through the post-device, and the water taking quality of a user is guaranteed to achieve the purpose of saving water simultaneously.

103. And controlling the waste water discharge branch to perform waste water discharge operation when the flushing of the first stage is performed.

In the embodiment of the utility model, during the first stage of flushing, only pure water or mixed water of the pure water and the raw water is input into the water inlet of the filter element of the water production branch, and at the moment, the water quality value (such as TDS, alkalinity, hardness and the like, which is not limited in the embodiment of the utility model) of the input water is obviously very small (namely, the water quality condition is better), so that a better flushing effect can be achieved on the filter element. Meanwhile, the wastewater discharge branch is controlled to be completely opened, and wastewater with higher water quality value generated by flushing is completely discharged. For example, in the first stage of flushing, when the TDS value at the waste water outlet of the water production branch is detected to be higher than 200, the waste water generated by flushing is completely discharged.

104. Determining a first adjusting parameter of the wastewater backflow branch when the second stage of flushing is carried out; and controlling the wastewater discharged from the wastewater outlet to flow back according to a matched proportion according to a first adjusting parameter of the wastewater backflow branch so as to flush the filter element at the second stage.

When the washing of the second stage is performed, the time or flow rate of the wastewater backflow can be controlled according to a preset control mode while the pure water backflow branch is controlled to perform the pure water backflow operation. The preset control mode may be a time mode, a water quality module, a mixture of a time mode and a water quality mode, and the like, and the embodiment of the present invention is not limited.

The time mode can finally achieve the water getting 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. Specifically, determining a first adjusting parameter of the wastewater backflow branch, wherein the adjusting parameter comprises a first adjusting time length and a second adjusting time length; the first adjusting time length is used for expressing the duration of controlling the wastewater discharged from the wastewater outlet to flow back to the prepositive device according to the matched proportion; the second adjustment period is used to indicate the duration of controlling the total wastewater discharged from the wastewater outlet to flow back to the front-end device. For example, the first adjustment time and the second adjustment time are 10 seconds and 20 seconds respectively, so that 10 seconds of mixed water flushing (the proportion of wastewater backflow in the flushing process is gradually changed from 0% to 100%) and 20 seconds of wastewater flushing can be realized, and the overall flushing operation is realized.

Wherein, the quality of water mode, can be according to the real-time quality of water value of the waste water export of real-time supervision's product water branch road, determine the first adjustment parameter of waste water backward flow branch road, and then control the flow of waste water backward flow (also be the aforesaid first waste water backward flow operation promptly) through first adjustment parameter, in order to input the waste water through waste water backward flow branch road backward flow to the leading device, release the raw water of buffer memory among the leading device, mix the pure water that forms mixed water with this part of the raw water of being released and pure water backward flow branch road backward flow, carry out the washing of second stage to the filter core. It should be noted that, while a part of the wastewater returned through the wastewater return branch is pushed out of the raw water in the pre-installation, the pre-installation can also buffer the part of the wastewater therein.

105. And after the flushing operation is finished, judging whether a water taking instruction is received.

In the embodiment of the utility model, whether a water getting instruction triggered by a user is received can be judged, the water getting instruction triggered by the user can be triggered by a key on the water purifier or can be triggered by remote control of the intelligent terminal equipment, and the water getting instruction can be triggered immediately or at regular time, so that the embodiment of the utility model is not limited.

In the embodiment of the utility model, after the water getting instruction triggered by the user is judged to be received, the target water getting amount corresponding to the water getting instruction is analyzed according to the content of the water getting instruction. The target water intake amount may be obtained by analyzing content related to the water intake amount in the water intake instruction, or may be obtained target water intake amount matched with the water intake instruction, and the obtaining manner may be local obtaining or obtaining from a server, which is not limited in the embodiment of the present invention. For example, a user may press a button for taking 100ml of water on the water purifier, or may determine whether to trigger a water taking instruction by detecting whether the user places a cup on a water taking position of the water purifier, and obtain capacity information of the cup by analyzing the image information according to image information of the cup, and determine the optimal water volume as a target water taking amount according to an optimal water volume for the cup, which is locally pre-stored in the water purifier or acquired by a server.

106. And when the water taking instruction is judged to be received, controlling the water production branch to execute water making operation according to a preset water making mode, and caching the pure water discharged from the pure water outlet to a post-positioned device to take water in the first stage and/or the second stage.

In the embodiment of the utility model, when the water taking instruction is judged to be received, the water producing branch is controlled to execute the water making operation according to the preset water making mode (time mode or water quality mode) so as to meet the water taking requirement corresponding to the water taking instruction. Meanwhile, the water taking process is also divided into two stages: the first stage of water intake and the second stage of water intake. Whether the water is taken in the first stage or the second stage, the pure water needs to be cached in the post-device under control to meet the water taking requirement of a user. It should be noted that the pure water buffer may be a buffer of a part of pure water (the rest of pure water is returned to the water production branch via the pure water return branch to produce water), or a buffer of all pure water. For example, when the pure water backflow branch comprises a first pure water backflow branch, a part of the pure water discharged from the pure water outlet may flow back to the water production branch, and the other part may be cached in the post-device; when the pure water gift-returning branch comprises the second pure water backflow branch, pure water in the post-device can be pushed out after the pure water is cached in the post-device, wherein pushed-out part of the pure water flows back to the water production branch through the second pure water backflow branch to produce water, and the other part of the pushed-out pure water is discharged through the pure water discharge branch to be used by a user.

107. When water is taken in the first stage, controlling all pure water discharged from the pure water outlet to be cached in the post-positioned device, and simultaneously determining a second adjusting parameter of the wastewater backflow branch according to a preset water making mode; and controlling the wastewater discharged from the wastewater outlet to flow back to the supercharging device and then input into the water inlet of the filter element to produce water according to a second adjusting parameter of the wastewater backflow branch.

In the embodiment of the utility model, when the water is taken in the first stage, the water quality of the pure water outlet is better, so that the pure water discharged from the pure water outlet can be controlled to be completely buffered to the post-device. And meanwhile, determining a second adjusting parameter of the wastewater back-gift branch according to a preset water making mode, wherein the preset water making mode comprises a time mode and a water quality mode, and similarly, the second adjusting parameter also comprises an adjusting parameter corresponding to the time mode and an adjusting parameter corresponding to the water quality mode. Therefore, the quality of the wastewater is better at the moment, and the utility model controls the wastewater discharged from the wastewater outlet to flow back to the water production branch to produce water completely or partially through the second adjustment parameter of the wastewater return branch.

108. When the water taking of the second stage is carried out, the pure water part discharged by the pure water outlet is controlled to be cached to the post-positioned device, the rest part flows back to the supercharging device and then is input into the water inlet of the filter element to produce water, and meanwhile, the wastewater discharge branch is controlled to execute the wastewater discharge operation so as to discharge all wastewater.

In the embodiment of the utility model, when water is taken in the second stage, the water quality of the pure water outlet or the water quality of the wastewater outlet is deteriorated after the water is taken in the first stage, and at this time, in order to ensure the water quality of the produced water, the pure water part discharged from the pure water outlet is controlled to be cached in the post-device; when the pure water gift-returning branch comprises the second pure water backflow branch, pure water in the post-device can be pushed out after the pure water is cached in the post-device, wherein pushed-out part of the pure water flows back to the water production branch through the second pure water backflow branch to produce water, and the other part of the pushed-out pure water is discharged through the pure water discharge branch to be used by a user. Meanwhile, due to poor quality of the wastewater, the wastewater discharge branch is required to be controlled to discharge all wastewater produced during water production, so that the wastewater is not recycled.

Therefore, the method described in the embodiment of the utility model can solve the problem of poor water quality of the first cup of water by caching pure water by adopting the rear device, and provides various pure water backflow branch structures, so that the flushing and water production efficiency is improved while the water quality is ensured, the water production rate of the water purifier is improved, and meanwhile, the water production rate of the water purifier is further improved, the quality of drinking water is improved and the waste of water resources is avoided by a multi-stage water path control mechanism combining the circulation of pure water and waste water.

Furthermore, in the embodiment of the utility model, when the water amount of the pure water cached in the post-device is judged to be greater than or equal to the target water intake amount of the user, obviously, the actual water output amount of the water purifier can reach the target water intake amount of the user only by discharging the pure water in the post-device, no additional water preparation operation is needed, and meanwhile, the water taking operation can be quickly carried out to the maximum extent, so that the water taking speed is greatly improved, and the user experience is improved.

Still further, in the embodiment of the present invention, after the target water intake of the user is determined, it is necessary to determine whether the amount of pure water cached in the post-device is greater than or equal to the target water intake. Because different controls need to be performed on the water purifier according to different cached water amounts in the rear device in order to control the actual water yield of the subsequent water purifier to reach the target water intake of the user, the actual water yield of the water purifier reaches the target water intake of the user.

Still further, in the embodiment of the present invention, when it is determined that the amount of pure water cached in the post-device is smaller than the target water intake amount of the user, the water purifier needs to be controlled to perform water production operation to supplement the lacking amount of pure water. In the embodiment of the utility model, in order to ensure that a user can continuously and uninterruptedly take water to the maximum extent in the actual water taking process, a scheme that the pure water discharging operation is carried out on the post-device and the water making operation is carried out on the water producing branch at the same time is adopted. Wherein the post-apparatus performs a pure water discharge operation, can discharge a first portion of pure water to the pure water discharge branch, and controls the pure water discharge branch to discharge the first portion of pure water. It should be noted that the first portion of pure water discharged by the post-apparatus may be all the pure water buffered therein, or may be a portion of the pure water buffered therein, which is not limited in the embodiment of the present invention.

In the embodiment of the utility model, when pure water discharging operation is carried out, the water production branch is controlled to execute water production operation according to a preset water production mode, in order to ensure that the total pure water discharged by the water purifier reaches the target water intake of a user, the water production branch should execute water production operation to prepare pure water at least equal to the target water output, wherein the target water output is the difference water amount between the target water intake and the water amount of the first part of pure water. Meanwhile, the pure water prepared by the water production branch is cached in the post-device, and the pure water discharge branch is controlled to discharge the prepared pure water with the same amount as the target water production. It should be noted that the pure water produced at this time may be directly discharged through the post-device, or may be discharged after being buffered to the post-device, and the embodiment of the present invention is not limited thereto.

In addition, in the embodiment of the present invention, the preset water making mode may be a time mode, a water quality module, a mixture of a time mode and a water quality mode, and the like, and the embodiment of the present invention is not limited. The time mode can finally achieve the water getting 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. The water quality mode is the most preferable mode, and the starting and ending of each control stage can be controlled through different judgment conditions by monitoring the water quality values (such as TDS, hardness, alkalinity and the like) in the water channel system, so that the aim of taking water by a user is finally fulfilled.

Preferably, in order to ensure that the user can continuously and uninterruptedly take water to the maximum extent in the actual water taking process, the pure water valve assembly arranged at the downstream of the post device in the water purifier can be used for controlling the pure water discharging speed of the post device, so that when the post device finishes discharging the first part of pure water, the water quantity prepared by the water quality operation performed by the water producing branch is just the same as the difference water quantity between the target water quantity and the water quantity of the first part of pure water.

Therefore, the method described in the embodiment of the utility model can solve the problem of poor water quality of the first cup of water by caching pure water through the rear device, and meanwhile, the water yield of the water purifier is improved, the quality of drinking water is improved, and waste of water resources is avoided through a multi-stage water path control mechanism combining pure water and waste water circulation.

In this optional embodiment, further, according to the preset flushing mode, the specific manner of controlling the pure water backflow branch to perform the pure water backflow operation may be:

when the pure water backflow branch comprises a first pure water backflow branch, controlling the pure water backflow branch to backflow pure water discharged from a pure water outlet to a water inlet of the filter element according to a preset flushing mode;

when the pure water backflow branch comprises a second pure water backflow branch, the pure water backflow branch is controlled to backflow the pure water discharged by the post device to the water inlet of the filter element according to a preset flushing mode.

In the embodiment of the utility model, the pure water backflow branch can comprise various forms, and when the first pure water backflow branch is included, the pure water backflow branch can be controlled to backflow pure water discharged from the pure water outlet to the filter element water inlet so as to flush the filter element. When including second pure water backward flow branch road, can control the second part pure water backward flow that pure water backward flow branch road discharged the post-arranged device to the filter core water inlet in order to wash the filter core. Wherein the second part of pure water is the pure water cached in the post-device except the first part of pure water used for discharging water for users.

It should be noted that, when the pure water backflow branch includes the first pure water backflow branch and the second pure water backflow branch simultaneously, and the first pure water backflow branch and the second pure water backflow branch are converged mutually, the pure water in the post-device may be controlled to flow back to the post-device again through a junction, and meanwhile, a sterilization device or a filtering device, etc. is arranged on the backflow branch, so that the flowing pure water may be further processed.

Therefore, the method described in the embodiment of the utility model can solve the problem of poor water quality of the first cup of water by caching pure water by adopting the post-device, avoids the influence of the waste water with too high concentration on the service life of the membrane, improves the water yield of the water purifier, improves the quality of drinking water, avoids the waste of water resources, can control the pure water backflow more flexibly by configuring different pure water backflow branches, realizes the accurate flushing of the filter element, avoids unnecessary flushing operation, further improves the flushing effect of the filter element, improves the water yield of the water purifier, can further treat the pure water in the post-device, and improves the quality of water taken by a user.

Example two

Referring to fig. 2, fig. 2 is a schematic flow chart illustrating another water purifier control method according to an embodiment of the present disclosure. As shown in fig. 2, the water purifier control method may include the following operations:

201. and judging whether the filter element meets the flushing condition.

202. And when the filter element is judged to meet the washing condition, controlling the pure water backflow branch to execute pure water backflow operation according to a preset washing mode, and washing the filter element in the first stage and the second stage.

203. And controlling the waste water discharge branch to perform waste water discharge operation when the flushing of the first stage is performed.

204. And judging whether the flushing of the first stage is finished or not, and starting the flushing of the second stage when judging that the flushing of the first stage is finished.

In the embodiment of the present invention, determining whether the flushing in the first stage is completed includes:

judging whether the real-time water quality value of the wastewater outlet is less than or equal to a first wastewater quality threshold value, and judging that the flushing in the first stage is finished when the real-time water quality value of the wastewater outlet is less than or equal to the first wastewater quality threshold value; alternatively, the first and second electrodes may be,

and judging whether the duration of the first-stage flushing exceeds the preset duration of the first wastewater, and judging that the first-stage flushing is completed when the duration of the first-stage flushing exceeds the preset duration of the first wastewater.

In the embodiment of the present invention, when the flushing in the first stage is finished, the flushing in the second stage may be started according to the actual water quality condition of the waterway system, and at the same time, a first adjustment parameter of the wastewater backflow branch is determined, where the first adjustment parameter may also be a time parameter or a water quality parameter, and the embodiment of the present invention is not limited. Whether the time parameter condition or the water quality parameter condition is passed, the wastewater discharged from the wastewater outlet is controlled to be mixed with raw water (and/or pure water refluxed by a pure water back-gift branch) to the water inlet of the filter element after being refluxed according to a matched proportion, so that the filter element is flushed at the second stage.

205. Determining a first adjusting parameter of the wastewater backflow branch when the second stage of flushing is carried out; and controlling the wastewater discharged from the wastewater outlet to flow back according to a matched proportion according to a first adjusting parameter of the wastewater backflow branch so as to flush the filter element at the second stage.

206. And after the flushing operation is finished, judging whether a water taking instruction is received.

207. And when the water taking instruction is judged to be received, controlling the water production branch to execute water making operation according to a preset water making mode, and caching the pure water discharged from the pure water outlet to a post-positioned device to take water in the first stage and/or the second stage.

208. When water is taken in the first stage, controlling all pure water discharged from the pure water outlet to be cached in the post-positioned device, and simultaneously determining a second adjusting parameter of the wastewater backflow branch according to a preset water making mode; and controlling the wastewater discharged from the wastewater outlet to flow back to the supercharging device and then input into the water inlet of the filter element to produce water according to a second adjusting parameter of the wastewater backflow branch.

209. When the water taking of the first stage is carried out, whether the water taking of the first stage is finished or not is judged, and when the water taking of the first stage is judged to be finished, the water taking of the second stage is started.

In the embodiment of the present invention, determining whether the water intake in the first stage is completed includes:

judging whether the duration of the first-stage water taking exceeds the preset duration of the first pure water or not, and judging that the first-stage water taking is finished when the duration of the first-stage water taking exceeds the preset duration of the first pure water; alternatively, the first and second electrodes may be,

and judging whether the real-time water quality value of the pure water outlet is greater than or equal to the first pure water quality threshold value or not, and judging that the water taking in the first stage is finished when the real-time water quality value of the pure water outlet is greater than or equal to the first pure water quality threshold value.

210. When the water taking of the second stage is carried out, the pure water part discharged by the pure water outlet is controlled to be cached to the post-positioned device, the rest part flows back to the supercharging device and then is input into the water inlet of the filter element to produce water, and meanwhile, the wastewater discharge branch is controlled to execute the wastewater discharge operation so as to discharge all wastewater.

In the embodiment of the present invention, for other descriptions of steps 201 to 203, steps 205 to 208, and step 209, please refer to the detailed descriptions of steps 101 to 108 in the first embodiment, respectively, which is not repeated herein.

Therefore, the method described in the embodiment of the utility model can solve the problem of poor water quality of the first cup of water by caching pure water through the rear device, and meanwhile, the water production and effective flushing of the water purifier are performed through a multi-stage water path control mechanism combining pure water and wastewater circulation, so that the intelligent control level of the water purifier is obviously improved, the flushing efficiency of the filter element is improved, the phenomenon that the service life of the membrane is influenced by the wastewater with too high concentration is avoided, the water yield of the water purifier is improved, the quality of drinking water is improved, and the waste of water resources is avoided.

Further, judging whether the filter element meets the flushing condition may include the following operations:

judging whether the water production quantity of the water production branch exceeds a preset water quantity or not, and judging that the filter element meets a flushing condition when the water production quantity of the water production branch exceeds the preset water quantity, wherein the water production quantity comprises the water quantity sum of single water production quantity or N times of water production recently; alternatively, the first and second electrodes may be,

and judging whether the water making times of the water production branch exceed the preset water making times or not, and judging that the filter element meets the flushing condition when the water making times of the water production branch exceed the preset water making times, wherein the water making times comprise the sum of the water making times between the current time point and the time point when the water production branch is flushed last time or the total water making times in the water production life cycle of the water production branch.

In the embodiment of the utility model, whether the filter element meets the flushing condition can be judged by monitoring whether the water quality value at the waste water outlet of the water production branch exceeds the preset threshold value, and when the water quality value at the waste water outlet is obviously higher than the preset threshold value, the salinity level in the filter element is higher, and flushing is needed. When opening waste water backward flow circulation, can also judge whether the filter core satisfies the condition of washing through whether the quality of water value of the mixed water that the filter core water inlet of monitoring product water branch road goes out surpasses and predetermines the threshold value, when the quality of water value of mixed water is higher than predetermineeing the threshold value, explains that the salinity level in the waste water of backward flow is higher, needs wash the filter core. Whether the filter element needs to be washed can also be judged by judging whether the time difference between the current time point and the time point of the last washing end of the water production branch exceeds the preset time length, the preset time length can be set according to the historical washing time and frequency, and the regular washing can be formed. In consideration of the actual use condition of the filter element, the water production branch can be judged by judging whether the working time of the water production branch exceeds the preset time or not, or whether the water production quantity of the water production branch exceeds the preset water quantity or not, or whether the water production frequency of the water production branch exceeds the preset frequency or not. In addition, can also judge through the quality of water value that the pure water outlet department of monitoring product water branch road whether surpasses and predetermine the threshold value, when the quality of water value of pure water outlet department surpassed and predetermine the threshold value, the description has accumulated salt of certain degree in the filter core and has leaded to the salt to reverse ooze to make pure water quality of water worsen in the pure water, needs wash the filter core.

Therefore, the method described in the embodiment of the utility model can solve the problem of poor water quality of the first cup of water by caching pure water by adopting the post-device, avoids the influence of the waste water with too high concentration on the service life of the membrane, improves the water yield of the water purifier, improves the quality of drinking water, avoids the waste of water resources, provides various methods for detecting whether the filter element meets the flushing condition, can monitor the use condition of the filter element more accurately, 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 another alternative embodiment, determining the second adjustment parameter of the wastewater return branch according to the preset water production mode may include the following operations:

judging whether a preset water making mode is a time mode or not;

In the embodiment of the utility model, when the preset water making mode is judged to be the time mode according to the preset water making mode, the water making operation of the water producing branch can be controlled through the preset time parameter or the time parameter obtained from the server in real time. And determining a second adjusting parameter of the wastewater backflow branch according to a preset water making mode, wherein the second adjusting parameter comprises a first water making time and a second water making time, and the water making operation of the water production branch comprises a first water making operation and a second water making operation. It should be noted that the water production operation of the water production branch may be a combination of any one or more of the first water production operation and the second water production operation, and the embodiment of the present invention is not limited thereto.

In the embodiment of the utility model, the duration of the first water production operation is the duration of the first water production, and during the duration, all wastewater discharged from the wastewater outlet is controlled to flow back and then is mixed with raw water in the raw water branch to enter the water production branch for water production; the duration of the second water production operation is the duration of the second water production, and during the duration, the wastewater discharged from the wastewater outlet is controlled to flow back according to a corresponding proportion and then is mixed with the raw water in the raw water branch to enter the water production branch for water production. For example, time parameters suitable for the water purifier can be predetermined according to size information, water flow speed information and the like of a pipeline in the water purifier, for example, the first water making time and the second water making time are respectively 10 seconds and 20 seconds, so that 10 seconds of wastewater water making (namely, the first water making operation) and 20 seconds of double-circulation water making (namely, the second water making operation) can be realized, and the proportion of wastewater backflow in the water making process is gradually changed from 100% to 0% so as to realize the whole water making operation of the water production branch.

Therefore, the method described in the embodiment of the utility model can solve the problem of poor water quality of the first cup of water by adopting a mode of caching pure water by the rear device, avoids the influence of the waste water with too high concentration on the service life of the membrane, improves the water yield of the water purifier, improves the quality of drinking water, avoids the waste of water resources, dynamically adjusts the proportion of the waste water for recycling by a timing control mode, achieves the level of finely regulating and controlling the waste water backflow, is favorable for realizing the accurate control of mixed water production, and further improves the water yield of the water purifier.

In yet another optional embodiment, determining the second adjustment parameter of the wastewater return branch according to a preset water production mode may further include:

judging whether a preset water making mode is a water quality mode or not;

and controlling the water production branch to perform water production operation according to the second adjustment parameter, so that the wastewater discharged from the wastewater outlet flows back according to a matched proportion and then is mixed with the raw water in the raw water branch to enter the water production branch for water production.

In the embodiment of the utility model, besides the time mode for water production, the utility model also provides a scheme for water production by the water quality mode, wherein a second adjusting parameter of the wastewater backflow branch is determined according to the real-time water quality value of the wastewater outlet, and the second adjusting parameter is used for adjusting the backflow proportion of the wastewater discharged from the wastewater outlet.

Therefore, the method described in the embodiment of the utility model can solve the problem of poor water quality of the first cup of water by caching pure water by adopting the post-device, avoids the influence of the waste water with too high concentration on the service life of the membrane, improves the water yield of the water purifier, improves the quality of drinking water, avoids the waste of water resources, dynamically adjusts the proportion of the waste water recycled by monitoring the water quality value of the waste water at the waste water outlet, achieves the level of finely regulating and controlling the waste water backflow, is favorable for realizing the precise control of mixed water production, and further improves the water yield of the water purifier.

In this alternative embodiment, determining the second adjustment parameter of the wastewater return branch according to the real-time water quality value of the wastewater outlet may include the following operations:

judging the size relation between the real-time water quality value of the wastewater outlet and the first water quality threshold value and the second water quality threshold value; wherein the first water quality threshold is less than the second water quality threshold;

In the embodiment of the utility model, two water quality thresholds for water production are set, namely a first water quality threshold for water production and a second water quality threshold for water production, wherein the first water quality threshold for water production is smaller than the second water quality threshold for water production. The second adjusting parameter of the wastewater backflow branch can be dynamically determined according to the size relation between the real-time water quality value of the wastewater outlet and the first water quality threshold and the second water quality threshold when the water production branch performs water production operation, the second adjusting parameter is used for controlling the wastewater backflow branch to perform wastewater backflow operation, and the wastewater backflow operation is specifically used for causing the water production branch to utilize mixed water to make water and wastewater backflow discharged from the wastewater outlet in the process. When the real-time water quality value of the wastewater outlet is judged to be less than or equal to the first water quality threshold value when the water production branch performs water production operation, the initial stage of mixed water production is shown, the water quality value of the reflowed wastewater is low, the second adjusting parameter of the wastewater reflowing branch is adjusted at the moment, the wastewater reflowing branch is controlled to be completely opened, the wastewater discharging branch is controlled to be completely closed, and the prepared wastewater is completely reflowed. Along with the execution of the wastewater backflow circulation, the real-time water quality value of the wastewater outlet is continuously increased when the water production branch performs water production operation, when the real-time water quality value is monitored to be larger than the first water production water quality threshold and smaller than the second water production water quality threshold, the second adjusting parameter of the wastewater backflow branch is adjusted at the moment to be used for proportionally backflow of wastewater discharged from the wastewater outlet, namely the wastewater backflow branch is controlled to gradually reduce the wastewater backflow water quantity and the wastewater discharge branch gradually increases the wastewater discharge quantity, the specific proportional relation can be adjusted according to actual conditions, and the embodiment of the utility model is not limited. For example, the set first water quality threshold and the second water quality threshold are 5 and 10, respectively, and the real-time water quality value of the wastewater outlet when the water production branch performs the water production operation is 8, then according to the proportional relationship, the second adjustment parameter of the wastewater backflow branch can be adjusted, so that 40% (2/5) of the wastewater discharged from the wastewater outlet flows back through the wastewater backflow branch, and 60% (3/5) of the wastewater is discharged through the wastewater discharge branch. When the real-time water quality value of the wastewater outlet is larger than or equal to the second water quality threshold value when the water production branch is judged to execute the water production operation, the situation that the water quality discharged from the wastewater outlet is poor at the moment is shown, the wastewater is not convenient to return and reuse at the moment, the second adjusting parameter of the wastewater return branch is adjusted at the moment, the wastewater return branch is controlled to be completely closed, the wastewater discharge branch is controlled to be completely opened, and the wastewater generated at the moment is completely discharged.

EXAMPLE III

Referring to fig. 3, fig. 3 is a schematic structural diagram of a water purifier according to an embodiment of the present invention. As shown in fig. 3, the water purifier includes a water production branch 1, the water production branch 1 includes a filter core water inlet, a filter core, a pure water outlet and a wastewater outlet, the filter core water inlet is connected with a raw water branch, the pure water outlet is connected with a pure water discharge branch, and the wastewater outlet is connected with a wastewater discharge branch, wherein the filter core may be a common filter core or a reverse osmosis filter core, which is not limited in the embodiment of the present invention. When the filter core is the reverse osmosis filter core, this product water branch road 1 can also be equipped with supercharging device 17 at reverse osmosis filter core upper reaches, and supercharging device 17 is used for producing the water pressure difference and can be used for making the water infiltration after the pressure boost pass through the filter core, also can control the backward flow of following pure water backward flow branch road and waste water backward flow branch road normal water, and this water purification can also include:

the pure water discharge branch is provided with a post device 5, and the post device 5 is used for caching the pure water prepared by the water production branch 1 so as to take water in the first stage and/or the second stage when receiving a water taking instruction;

the pure water backflow branch is used for returning pure water to the supercharging device and then inputting the pure water to a water inlet of the filter element to flush the filter element in the first stage and/or the second stage according to a preset flushing mode when the filter element is judged to meet the flushing condition; the pure water backflow branch comprises a first pure water backflow branch and/or a second pure water backflow branch, the first pure water backflow branch is used for enabling pure water discharged from a pure water outlet to flow back to the supercharging device 17 and then to be input into the water inlet of the filter element, and the second pure water backflow branch is used for enabling pure water discharged from the post device to flow back to the supercharging device 17 and then to be input into the water inlet of the filter element; the first pure water backflow branch and the pure water discharge branch are intersected at a first pure water backflow intersection A, the first pure water backflow branch and the raw water branch are intersected at a second pure water backflow intersection B, and the first pure water backflow intersection is positioned between the pure water outlet and the post-device 5; the second pure water backflow branch and the pure water discharge branch are intersected at a third pure water backflow intersection point E, the second pure water backflow branch and the raw water branch are intersected at a fourth pure water backflow intersection point B, and the third pure water backflow intersection point is positioned at the downstream of the post-device 5; the second pure water reflux intersection B and the fourth pure water reflux intersection B are located upstream of the pressure-increasing means 17;

the waste water backflow branch and the waste water discharge branch are intersected at a first waste water backflow intersection C, and the waste water backflow branch and the raw water branch are intersected at a second waste water backflow intersection D; the waste water backflow branch is used for backflow of waste water discharged from the waste water outlet to the water production branch; the second wastewater return intersection point D is located upstream of the pressure boosting device 17.

Wherein, when the first stage of flushing is carried out, the waste water discharge branch is used for discharging all waste water; when the second stage of washing is carried out, the wastewater backflow branch is used for carrying out the second stage of washing on the filter element after the wastewater discharged from the wastewater outlet flows back according to the matched proportion;

when water is taken in the first stage, the post-device 5 is used for caching all pure water prepared by the water production branch, and the wastewater backflow branch is used for returning wastewater discharged from the wastewater outlet to the supercharging device 17 according to a matched proportion and then inputting the wastewater into the water inlet of the filter element to prepare water; when the water intaking of second stage is carried out, rearmounted device 5 is used for the buffer memory to produce partial pure water that the water branch road was prepared, and pure water backward flow branch road is used for inputting the filter core water inlet after returning other partial pure water to supercharging device 17 in order to make water, and waste water discharges the branch road simultaneously and is used for discharging whole waste water.

In the embodiment of the present invention, the first pure water return branch and the raw water branch intersect at the second pure water return intersection, and the second pure water return branch and the raw water branch intersect at the fourth pure water return intersection, which may be the same point or two different points, and the embodiment of the present invention is not limited. Preferably, sharing part branch road between first pure water backward flow branch road and the second pure water backward flow branch road, and both junctions are located between first pure water backward flow valve subassembly 2 and the second pure water backward flow valve subassembly 6, so can control the pure water among the rear device and flow back to the rear device again through the junctions, set up sterilizing equipment or filter equipment etc. on the branch road of backward flow simultaneously, can carry out further processing to the pure water that flows through.

In the embodiment of the utility model, raw water flows into the water production branch 1 from a water inlet end, the raw water is filtered by the filter element, pure water is prepared at a pure water outlet, wastewater is prepared at a wastewater outlet, the pure water can be input into the post-device 5 through the pure water discharge branch for buffering, and then can be discharged through the post-device 5, and simultaneously can flow back to the raw water branch through the pure water backflow branch to be input into the water production branch 1; the wastewater can flow back to the raw water branch through the wastewater backflow branch to enter the water production branch 1, and can also be discharged through the wastewater discharge branch. The rear device 5 may include a single-cavity water storage device, a multi-cavity water storage device, an airbag water storage device, a filtering device, and the like, which is not limited in the embodiments of the present invention. It should be noted that the present invention is not limited to the capacity of the rear device, and the capacity of the rear device is preferably not fixed but may be adjustable. Preferably, the volume of the rear device is preferably 100ml to 8000ml, if the volume is too small, the efficiency of pure water backflow or filtration is affected, so that a better washing effect cannot be achieved, the purpose of saving water and saving water is difficult to achieve, and if the volume is too large, the volume of the water purifier is affected.

In addition, pure water discharge branch is equipped with pure water valve member 7 on the road, is equipped with waste water valve member 8 on the waste water discharge branch road, synthesizes and adjusts first pure water backward flow valve member 2, waste water backward flow valve member 3, pure water valve member, waste water valve member 8, realizes the water preparation operation to the multistage washing operation of filter core and product water installation. It should be noted that each valve assembly may be opened or closed, and may also control the opening degree (the size of the opening of the switch), and the embodiment of the present invention is not limited thereto.

In the embodiment of the utility model, after the water getting instruction triggered by the user is judged to be received, the target water getting amount corresponding to the water getting instruction is determined, and then whether the cached pure water amount in the post device 5 is more than or equal to the target water getting amount is judged. When the water quantity of the pure water cached in the post-device 5 is judged to be more than or equal to the target water intake quantity of the user, the actual water yield of the water purifier can reach the target water intake quantity of the user only by discharging the pure water in the post-device; when the water amount of the pure water cached in the post-device 5 is judged to be smaller than the target water intake amount of the user, the post-device can discharge the first part of pure water to the pure water discharge branch, and control the pure water discharge branch to discharge the first part of pure water, and meanwhile, the water purifier needs to be controlled to carry out water production operation to supplement the lacking pure water amount. According to the preset water production mode, the water production branch 1 executes water production operation, and in order to ensure that the total pure water amount discharged by the water purifier reaches the target water intake amount of a user, the water production branch 1 executes the water production operation to prepare pure water at least equal to the target water yield, wherein the target water yield is the difference water amount between the target water intake amount and the water amount of the first part of pure water. Meanwhile, the pure water prepared by the water production branch 1 is cached in the post-device 5, and the pure water discharge branch is controlled to discharge the prepared pure water with the same amount as the target water yield. It should be noted that the pure water produced at this time may be directly discharged through the post-device, or may be discharged after being buffered to the post-device, and the embodiment of the present invention is not limited thereto.

Therefore, the water purifier described in the embodiment of the utility model can solve the problem of poor water quality of the first cup of water by adopting a mode of caching pure water by the aid of the rear device, and meanwhile, water production and effective flushing are performed on the water purifier by means of a multi-stage water path control mechanism combining pure water circulation and waste water circulation, so that the intelligent control level of the water purifier is obviously improved, the flushing efficiency of the filter element is improved, the service life of the membrane is prevented from being influenced by waste water with too high concentration, the water yield of the water purifier is improved, the quality of drinking water is improved, and waste of water resources is avoided.

In an optional embodiment, as shown in fig. 4, fig. 4 is a schematic structural diagram of another water purifier disclosed in the embodiment of the present invention, and as shown in fig. 4, the water purifier further includes:

a branch communicated with the wastewater outlet is provided with a water quality detection device which is used for monitoring the real-time water quality value of the wastewater outlet;

wherein, water quality testing device includes:

a first water quality detection device 4 is arranged at the waste water outlet; and/or the first and/or second light sources,

a second water quality detection device 9 is arranged on the wastewater return branch; and/or the first and/or second light sources,

and a third water quality detection device 10 arranged on the waste water discharge branch.

In the embodiment of the present invention, the branch path communicated with the wastewater outlet is provided with the water quality detection device, the arrangement manner of the water quality detection device may be various, and the water quality detection device may be any combination of the first water quality detection device 4, the second water quality detection device 9, and the third water quality detection device 10. For example, when the first wastewater backflow intersection C where the wastewater backflow branch and the wastewater discharge branch intersect is 2 wastewater outlets of the water production branch, a water quality detection device may be respectively disposed on each of the wastewater backflow branch and the wastewater discharge branch; when the waste water reflux branch and the waste water discharge branch share part of the branch, only one water quality detection device can be arranged on the shared part of the branch, and the specific arrangement mode is not limited in the embodiment of the utility model.

Therefore, the water purifier described in the embodiment of the utility model can solve the problem of poor water quality of the first cup of water by caching pure water by adopting the rear device, can provide various schemes for detecting the quality of wastewater, provides diversified wastewater detection device layout schemes, further finely detects the quality of wastewater of each wastewater branch, improves the control precision of wastewater backflow, further improves the efficiency of filter element flushing, and improves the water yield of the water purifier.

In another alternative embodiment, when the waste water return branch and the waste water discharge branch share a part of branches, a waste water proportion device 11 is further disposed on the shared part of branches, and the waste water proportion device 11 is used for adjusting the proportion of the amount of waste water discharged from the waste water outlet flowing into the waste water return branch and the waste water discharge branch respectively.

In the embodiment of the utility model, when the waste water backflow branch and the waste water discharge branch share part of branches, the waste water backflow control device can control the water quantity proportion of waste water backflow through the waste water backflow valve component 3, and can also control the waste water backflow through the waste water proportion device 11 arranged on the shared branch of the waste water backflow branch and the waste water discharge branch. For example, the wastewater proportioning device 11 may be a three-way proportional valve assembly, one end of which is connected to the wastewater outlet of the water production branch, and the other two ends of which are respectively connected to the wastewater return branch and the wastewater discharge branch, and the opening and closing degree of each port of the proportional valve assembly is controlled by voltage to realize the control of water flow.

Therefore, the water purifier described in the embodiment of the utility model can solve the problem of poor water quality of the first cup of water by caching pure water by adopting the rear device, and simultaneously provides an optimal wastewater proportion control scheme, so that the convenience and response precision of the wastewater reflux proportion are improved, the efficiency of flushing the filter element is improved, and the water yield of the water purifier is improved.

In yet another alternative embodiment, a fourth water quality detection device 14 is disposed at the water inlet of the filter element of the water production branch 1, wherein the fourth water quality detection device 14 is used for detecting the water quality condition at the water inlet of the filter element.

In the embodiment of the present invention, the fourth water quality detecting device 14 may be specifically located downstream of the second pure water backflow intersection B and upstream of the water inlet of the filter element of the water producing branch 1. In addition, can be through the quality of water condition that fourth water quality testing device 14 detected, and then can realize the control to pure water backward flow branch road and waste water backward flow branch road according to the quality of water condition of mixed water, realize the mixed system water operation to the washing operation of filter core or product water branch road. For example, when the water quality value detected by the fourth water quality detecting device 14 is determined to exceed the preset water quality threshold, it may be determined that the filter element satisfies the flushing condition.

Still further, a fifth water quality detection device 15 is arranged on the raw water branch, the fifth water quality detection device 15 is located at the downstream of the second wastewater backflow intersection D and at the upstream of the water inlet of the filter element, wherein the fifth water quality detection device 15 is used for detecting the water quality condition of mixed water formed by mixing the wastewater discharged from the wastewater outlet with the raw water in the raw water branch after the wastewater flows back.

In the embodiment of the utility model, the water quality condition of the mixed water formed by mixing the returned wastewater and the raw water in the raw water branch can be monitored by the fifth water quality detection device 15, the water quality condition of the mixed water can reflect the water quality condition of the wastewater outlet of the water production branch 1 to a certain extent in the flushing process or the water production process by using the mixed water, and when the raw water branch is also provided with the eighth water quality detection device 12, the water quality value of the wastewater outlet of the water production branch can be estimated according to the fifth water quality detection device 15 and the eighth water quality detection device 12. In addition, because the quality of water condition of mixed water can reflect the quality of water condition of producing water branch road waste water export to a certain extent, then refer to the effect of water quality testing device 4, can also be according to the quality of water condition of mixed water of monitoring, carry out intelligent control to whole purifier.

Still further, a sixth water quality detection device 16 is arranged on the pure water discharge branch, the sixth water quality detection device 16 is positioned between the pure water outlet and the post-device 5, and the sixth water quality detection device 16 is used for detecting the water quality condition of the pure water discharged from the pure water outlet. The water quality condition of the discharged pure water is monitored, the stability of the water outlet performance is guaranteed, and the control effect of the whole water purifier is fed back in real time.

Still further, a seventh water quality detection device 13 is arranged on the pure water discharge branch, the seventh water quality detection device 13 is positioned between the post device 5 and the pure water valve assembly 7, and the seventh water quality detection device 13 is used for detecting the water quality condition of the pure water discharged by the post device.

Still further, the raw water branch may be further provided with a pre-device, the pre-device is located downstream of the second wastewater backflow intersection and upstream of the second pure water backflow intersection and the fourth pure water backflow intersection, wherein the pre-device is used for buffering or filtering raw water of the raw water branch or/and wastewater discharged from the wastewater outlet and reflowing the wastewater, and in an embodiment of the present invention, the pre-device is used for buffering water input by the raw water branch and/or the wastewater backflow branch. The front-end device may include a single-cavity water storage device, a multi-cavity water storage device, an airbag water storage device, a filtering device, and the like, and the embodiment of the present invention is not limited. It should be noted that the capacity of the front-end device is not limited in the present invention, and is preferably adjustable, instead of being fixed. Preferably, the volume of the preposed device is preferably 100ml to 8000ml, the backflow or filtration efficiency of the wastewater can be influenced if the volume is too small, so that a better washing effect cannot be achieved, the purposes of saving water and saving water are difficult to achieve, and the volume of the water purifier can be influenced if the volume is too large.

As can be seen, with reference to the description of the first embodiment or the second embodiment, the water purifier according to the embodiment of the present invention can provide a multi-stage water control mechanism combining pure water and wastewater circulation to effectively flush and produce water.

Example four

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 present invention. The device described in fig. 5 can be applied to a water purifier. As shown in fig. 5, the water purifier control device may include:

a memory 401 storing executable program code;

a processor 402 coupled with the memory 401;

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

EXAMPLE five

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

The above-described embodiments of the apparatus are merely illustrative, and the modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, may be located in one place, or may be distributed on 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 the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Through the above detailed description of the embodiments, those skilled in the art will clearly understand that the embodiments may be implemented by software plus a necessary general hardware platform, and may also be implemented by hardware. Based on such understanding, the above technical solutions may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, where the storage medium includes a Read-Only Memory (ROM), a Random Access Memory (RAM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), a One-time Programmable Read-Only Memory (OTPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc-Read-Only Memory (CD-ROM), or other disk memories, CD-ROMs, or other magnetic disks, A tape memory, or any other medium readable by a computer that can be used to carry or store data.

It should be noted that computer program code required for the operation of various portions of this specification can 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, and the like, a conventional programming language such as C, Visual Basic, Fortran2003, Perl, COBOL 2002, PHP, ABAP, a dynamic programming language such as Python, Ruby, and Groovy, or other programming languages. The program code may run entirely on a computer (PC, embedded smart device, etc.), as a stand-alone software package on the user's computer, 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 network format, 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 in a cloud computing environment, or as a service, such as a software as a service (SaaS).

Finally, it should be noted that: the method and apparatus for controlling a water purifier disclosed in the embodiments of the present invention are only preferred embodiments of the present invention, and are only used for illustrating the technical solutions of the present invention, not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a water purifier, the water purifier includes raw water branch road, produces water branch road, waste water discharge branch road and pure water discharge branch road, it includes filter core water inlet, filter core, pure water export and wastewater outlet to produce the water branch road, its characterized in that, the water purifier still includes:

a wastewater return branch, wherein the wastewater return branch and the wastewater discharge branch are intersected at a first wastewater return intersection, and the wastewater return branch and the raw water branch are intersected at a second wastewater return intersection; the waste water backflow branch is used for returning waste water discharged from the waste water outlet to the water production branch; the second wastewater return junction is located upstream of the pressure boosting device;

2. The water purifier of claim 1, further comprising:

wherein, water quality testing device includes:

3. The water purifier as claimed in claim 1 or 2, wherein when the wastewater return branch and the wastewater discharge branch share a part of branch, a wastewater proportion device is disposed on the branch shared by the wastewater return branch and the wastewater discharge branch, and the wastewater proportion device is configured to adjust a water quantity proportion of wastewater discharged from the wastewater outlet flowing into the wastewater return branch and the wastewater discharge branch respectively.

4. The water purifier as recited in claim 3, wherein a fourth water quality detector is disposed at a water inlet of the filter element of the water producing branch, and the fourth water quality detector is configured to detect a water quality condition of the water inlet of the filter element.

5. The water purifier as claimed in claim 3 or 4, wherein a fifth water quality detector is disposed on the raw water branch, the fifth water quality detector is disposed downstream of the second wastewater backflow intersection and upstream of the water inlet of the filter element, and the fifth water quality detector is configured to detect a water quality condition of mixed water formed by mixing the wastewater discharged from the wastewater outlet with the raw water in the raw water branch after backflow.

6. The water purifier as recited in claim 5, wherein a sixth water quality detector is disposed on said pure water discharge branch, said sixth water quality detector is disposed between said pure water outlet and said post-device, and said sixth water quality detector is configured to detect a water quality condition of pure water discharged from said pure water outlet.

7. The water purifier as recited in claim 6, wherein a seventh water quality detection device is disposed on said pure water discharge branch, said seventh water quality detection device is disposed downstream of said post-device, and said seventh water quality detection device is configured to detect a water quality condition of pure water discharged by said post-device.

8. The water purifier as claimed in any one of claims 3-7, wherein a pre-device is further disposed on the raw water branch, the pre-device is disposed downstream of the second wastewater return cross point and upstream of the second and fourth pure water return cross points, and the pre-device is configured to buffer raw water in the raw water branch and/or discharge returned wastewater from the wastewater outlet.