CN115475523A - Control method of water purifier - Google Patents

Control method of water purifier Download PDF

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Publication number
CN115475523A
CN115475523A CN202110875483.XA CN202110875483A CN115475523A CN 115475523 A CN115475523 A CN 115475523A CN 202110875483 A CN202110875483 A CN 202110875483A CN 115475523 A CN115475523 A CN 115475523A
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China
Prior art keywords
water
controlling
valve
pipe
preset
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Granted
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CN202110875483.XA
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Chinese (zh)
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CN115475523B (en
Inventor
武中华
李键
谭俊
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Qingdao Haier Strauss Water Equipment Co Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Strauss Water Equipment Co Ltd
Haier Smart Home Co Ltd
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Priority to CN202110875483.XA priority Critical patent/CN115475523B/en
Publication of CN115475523A publication Critical patent/CN115475523A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/12—Controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025—Reverse osmosis; Hyperfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/08—Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/10—Accessories; Auxiliary operations
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/03—Pressure
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions

Abstract

The invention relates to the technical field of water purifiers, and particularly provides a control method of a water purifier, aiming at solving the problem of water resource waste of the existing water purifier. To this end, the water purification machine of the present invention comprises: the system comprises a reverse osmosis filter device, a raw water pipe, a pure water pipe and a waste water pipe; the raw water pipe is provided with a supercharging device and is communicated with a raw water inlet of the reverse osmosis filtering device; the pure water pipe is communicated with a pure water outlet of the reverse osmosis filter device, and a pure water valve is arranged at the outlet of the pure water pipe; the waste water pipe is communicated with a waste water outlet of the reverse osmosis filtering device; the control method comprises the following steps: acquiring raw water quality information when the pure water valve is closed; determining the interval time for starting the cleaning mode based on the raw water quality information; when the interval time elapses, the cleaning mode is selectively controlled to be turned on. According to the arrangement mode, the corresponding cleaning interval time can be selected according to the difference of regional water quality, unnecessary frequent cleaning of the water purifier is avoided, and water saving of the water purifier is facilitated.

Description

Control method of water purifier
Technical Field
The invention relates to the technical field of water purifiers, and particularly provides a control method of a water purifier.
Background
For the reverse osmosis water purifiers on the market, in the use process, raw water enters a reverse osmosis filtering device under the action of water pressure and is filtered by a reverse osmosis membrane, the raw water can become pure water for users to use after being filtered by the reverse osmosis membrane, and the pure water which cannot be filtered by the reverse osmosis membrane becomes waste water and is discharged through a waste water outlet. Meanwhile, the reverse osmosis membrane is used as a center, one side of the reverse osmosis membrane is an unfiltered side with a high TDS (Total dissolved solids) value, and the other side of the reverse osmosis membrane is a filtered side with a low TDS value.
In the prior art, there are various methods for solving this problem, for example, by providing a water storage tank to flush a reverse osmosis membrane.
In the prior art, the time for the water purifier to start cleaning is often not accurate enough, for example, the water purifier is cleaned immediately after stopping water production, so that the water purifier is not cleaned under the condition that the cleaning condition is not met, and further water resource waste is caused.
Accordingly, there is a need in the art for a new method for controlling a water purifier to solve the problem of water resource waste of the existing water purifier.
Disclosure of Invention
The invention aims to solve the technical problem that water resources of the existing water purifier are wasted. The invention provides a control method of a water purifier, wherein the water purifier comprises the following steps: a reverse osmosis filtration device; the raw water pipe is provided with a supercharging device and is communicated with a raw water inlet of the reverse osmosis filtering device; the pure water pipe is communicated with a pure water outlet of the reverse osmosis filter device, and a pure water valve is arranged at the outlet of the pure water pipe; the waste water pipe is communicated with a waste water outlet of the reverse osmosis filtering device; the control method comprises the following steps: acquiring raw water quality information when the pure water valve is in a closed state; determining interval time for starting a cleaning mode based on the raw water quality information; and selectively controlling the cleaning mode to be started after the interval time.
In a preferred technical scheme of the control method of the water purifier, the water purifier further comprises a water discharge pipe, and the water inlet end of the water discharge pipe is communicated with the pure water pipe; the water outlet end of the drain pipe is communicated with the waste water pipe, the drain pipe is provided with a drain valve, the pure water pipe is provided with a high-pressure switch, and the high-pressure switch is set to send out a starting signal when the current water pressure is less than the preset water pressure so as to start the supercharging device; when the current water pressure is greater than or equal to the preset water pressure, sending a closing signal to close the pressurizing device; the step of "controlling the cleaning mode to be on" further includes: controlling the drain valve to be opened; and controlling the drain valve to close after the preset condition is reached.
In a preferred technical scheme of the control method of the water purifier, a waste water valve is arranged on the waste water pipe, and a water outlet end of the drain pipe is communicated with a water inlet end of the waste water valve; simultaneously with or before the step of "controlling the drain valve to be opened", the control method further includes: and controlling the opening degree of the waste water valve to be in a large-hole state.
In a preferred technical scheme of the control method of the water purifier, a waste water valve is arranged on the waste water pipe, and a water outlet end of the drain pipe is communicated with a water outlet end of the waste water valve.
In an preferable technical solution of the control method of the water purifier, the step of controlling the drain valve to close after the preset condition is reached further includes: and after the supercharging device operates for a preset frequency, controlling the drainage valve to be closed.
In a preferred technical solution of the control method of the water purifier, the step of controlling the drain valve to close after the preset condition is reached further includes: and after the preset cleaning time, controlling the drainage valve to be closed.
In a preferred technical solution of the control method of the water purifier, before the step of "controlling the drain valve to close after the preset condition is reached", the control method further includes: obtaining a TDS value TDS1 at a pure water pipe and obtaining a TDS value TDS2 at a raw water pipe; judging the size of the ratio of the TDS2 to the TDS1 and a preset ratio; the step of controlling the closing of the drain valve when the preset condition is reached further comprises: when the ratio of the TDS2 to the TDS1 is smaller than a preset ratio, controlling the drain valve to be closed; or before the step of controlling the drain valve to close after the preset condition is reached, the control method further comprises: acquiring a TDS value TDS1 at a pure water pipe; determining a drainage time based on a range where the TDS1 is located; the step of controlling the closing of the drain valve when the preset condition is reached further comprises: and controlling the drainage valve to be closed after the drainage time.
In a preferred embodiment of the method for controlling a water purifier, the step of "acquiring raw water quality information in a state where the pure water valve is closed" further includes: acquiring a TDS value TDS3 at the raw water pipe when the pure water valve is in a closed state; the step of "determining an interval time for activation of a cleaning mode based on the raw water quality information" further includes: determining an interval time for enabling a cleaning mode based on the range of the TDS3; or the raw water quality information is local raw water quality information acquired through a cloud.
In a preferred technical solution of the control method of the water purifier, the water purifier is provided with a sensing device, and the step of selectively controlling the cleaning mode to be turned on after the interval time further includes: when the interval time passes, selectively controlling the induction device to start; when the induction device is controlled to be started, judging whether a person moves within a preset range; and when the judgment result is yes, controlling the cleaning mode to be started.
In a preferred embodiment of the control method of the water purifier, the step of selectively controlling the sensing device to start after the interval time further includes: acquiring the current time after the time; judging whether the current time is in a preset time period or not; and when the current time is in the preset time period, controlling the induction device to start.
As can be understood by those skilled in the art, in the technical solution of the present invention, the water purifier includes: the system comprises a reverse osmosis filter device, a raw water pipe, a pure water pipe and a waste water pipe; the raw water pipe is provided with a supercharging device and is communicated with a raw water inlet of the reverse osmosis filtering device; the pure water pipe is communicated with a pure water outlet of the reverse osmosis filter device, and a pure water valve is arranged at the outlet of the pure water pipe; the waste water pipe is communicated with a waste water outlet of the reverse osmosis filtering device; the control method comprises the following steps: acquiring raw water quality information when the pure water valve is closed; determining the interval time for starting the cleaning mode based on the raw water quality information; when the interval time elapses, the cleaning mode is selectively controlled to be turned on.
Through the setting mode, corresponding cleaning interval time can be selected according to the difference of regional water quality, unnecessary frequent cleaning of the water purifier is avoided, and water saving of the water purifier is facilitated.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of a water outlet end of a water discharge pipe of the water purifier of the present invention communicating with a water inlet end of the waste water valve;
FIG. 2 is a schematic view of the water outlet pipe of the water purifier according to the present invention connected to the water outlet of the waste water valve;
FIG. 3 is a flow chart of the main steps of the control method of the water purifier according to the present invention;
fig. 4 is a flowchart illustrating steps of a method for controlling a water purifier according to an embodiment of the present invention.
List of reference numerals:
10-a raw water pipe; 11-a pressure boosting device; 12-a water inlet valve; 13-a primary filtering device; 14-a secondary filtration device; 20-a pure water pipe; 21-a high voltage switch; 22-a one-way valve; 30-a waste pipe; 31-a waste water valve; 40-a drain pipe; 41-a drain valve; 50-reverse osmosis filtration device.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications.
It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "communicate" and "connect" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
It should be noted that the above-mentioned embodiments are only used for illustrating the principle of the present invention, and are not intended to limit the protection scope of the present invention, and those skilled in the art can modify the above-mentioned structure so that the present invention can be applied to more specific application scenarios without departing from the principle of the present invention.
First, a specific structure of the water purifier of the present invention will be described.
As shown in fig. 1 and 2, the water purifier of the present invention comprises a reverse osmosis filter 50, a raw water pipe 10, a purified water pipe 20, a drain pipe 40 and a waste water pipe 30, wherein the raw water pipe 10 is provided with a pressure boosting device 11, the raw water pipe 10 is communicated with a raw water inlet of the reverse osmosis filter 50, and the raw water pipe 10 is provided with a second TDS detection device (not shown); the pure water pipe 20 is communicated with a pure water outlet of the reverse osmosis filter device 50, and a pure water valve (not shown in the figure) is arranged at the outlet of the pure water pipe 20, wherein the pure water valve can be a water faucet of various types, a first TDS detection device (not shown in the figure) is arranged on the pure water pipe 20, a high-voltage switch 21 is also arranged on the pure water pipe 20, and the high-voltage switch 21 is set to send a starting signal to start the supercharging device 11 when the current water pressure is less than a preset water pressure; when the current water pressure is greater than or equal to the preset water pressure, sending a closing signal to close the supercharging device 11; waste pipe 30 is linked together with the waste water outlet of reverse osmosis filter device 50, be equipped with waste water valve 31 on the waste pipe 30, the income water end and the pure water pipe 20 of drain pipe 40 are linked together, the play water end and the waste pipe 30 of drain pipe 40 are linked together, be equipped with drain valve 41 on the drain pipe 40, be equipped with induction system on the purifier, wherein, induction system can be infrared inductor or microwave induction system etc. in addition, first TDS detection device is used for detecting the TDS value of pure water pipe 20 department, second TDS detection device is used for detecting the TDS value of raw water pipe 10 department. Wherein, first TDS detection device and second TDS detection device include the TDS probe, mainly reflect the concentration of the salt dissolved in aquatic based on the conductivity value of water, mainly reflect be the concentration of Ca2+, mg2+, na +, K + plasma in aquatic. Generally, the higher the conductivity, the higher the concentration of the above ions, and the higher the TDS value.
Wherein, the theory of operation that the purifier made water and stopped making water is: when the pure water valve and the drain valve 41 are closed, the pure water pipe 20 is in a full water state, and the water pressure after the reverse osmosis membrane is equal to or higher than a preset water pressure (the preset water pressure may be set by itself, for example, higher than the pressure at which the pure water pipe 20 drains water and lower than the full water pressure at the time of shutdown), at this time, the pressure increasing device 11 does not operate, and the water purifier is in a standby state. When a user takes water, the user opens the pure water valve, water in the pure water pipe 20 starts to flow out from the outlet of the pure water pipe to be supplied to the user, at the moment, the pure water pipe 20 is decompressed, the current pressure at the pure water pipe 20 behind the reverse osmosis membrane is smaller than the preset water pressure, the high-pressure switch 21 sends a starting signal, the supercharging device 11 is started, the water purifier starts to carry out water supplementing work, namely, raw water enters the raw water pipe 10 through the inlet of the raw water pipe 10, the supercharged water is filtered through the reverse osmosis filtering device 50 under the action of the supercharging device 11, part of the water is filtered to form pure water and flows out to the pure water pipe 20 from the pure water outlet of the reverse osmosis filtering device 50, then the pure water is discharged from the outlet of the pure water pipe 20 to be supplied to the user, and part of the water forms concentrated water and flows out to the waste water pipe 30 from the waste water outlet and is discharged out through the waste water pipe 30; when a user finishes taking water, the user closes the pure water valve, the pure water pipe 20 is full of water, the pipeline pressure is greater than or equal to the preset water pressure, the high-pressure switch 21 sends out a closing signal, the supercharging device 11 does not work, and the whole machine is in a standby state.
The following describes a control method of a water purifier according to the present invention.
As shown in fig. 3, the method for controlling a water purifier of the present invention includes the following steps:
step S100: and acquiring the raw water quality information when the pure water valve is in a closed state.
Step S200: and determining the interval time of starting the cleaning mode based on the raw water quality information.
When the user does not take water, namely the user closes the pure water valve, the water purifier does not produce water any more, and then raw water quality information is obtained. As a preferred embodiment, the raw water quality information is a TDS value of raw water at a raw water pipe, the TDS value is acquired by the second TDS detecting device, and after the TDS value is acquired, the interval time for starting the cleaning mode is determined based on the range of the TDS value. For example, when TDS <200mg/L, the interval time is T1; when the TDS is more than 500mg/L and is more than or equal to 200mg/L, the interval time is T2; when the TDS is more than or equal to 500mg/L, the interval time is T3; wherein T3 is more than T2 and less than T1. The control method has the advantages that the TDS detection device with low use cost is used for detection, so that the detection accuracy can be ensured, and the production and use cost can be reduced. Of course, the method of acquiring the water quality information according to the present invention is not limited to this, and for example, a turbidity sensor or the like may be provided in the raw water pipe, and the interval time of the activation of the cleaning mode may be determined by a detection value range of the turbidity sensor or the like.
In addition, the acquired water quality information can also be local raw water quality information acquired through a cloud. The cloud database stores local raw water quality information, the water purifier can directly acquire the raw water quality information through the cloud server, the local raw water quality information can specifically reach water quality information of a water plant, other local users can share data to the cloud, and then the data obtained after statistical calculation is carried out by the cloud. The setting mode has the advantages that under the normal condition, the water quality difference of raw water supplied to a user locally is not large, so that the raw water quality information is obtained through cloud data, the reliability of the data can be guaranteed, a water quality detection device is not installed at a raw water pipe, the production process is reduced, and the production cost is saved.
Because the difference of drinking water quality is large in different areas, for example, the water quality in northern areas is hard and contains more minerals such as calcium, magnesium and the like; in southern areas, the water quality is soft generally, the content of calcium ions and magnesium ions is low, the invention distinguishes the water quality of raw water, and purposefully determines the interval time for starting cleaning, for example, the interval time for good water quality is long, and the interval time for poor water quality is short, so that unnecessary frequent cleaning work of the water purifier can be avoided, and the water saving of the water purifier is facilitated.
Step S300: when the interval time elapses, the cleaning mode is selectively controlled to be turned on.
As a preferred embodiment, after the interval time, first obtaining the current time, determining whether the current time is in a preset time period, when the current time is in the preset time period, controlling the induction device to start, then determining whether a person moves within a preset range, and if the determination result is yes, controlling the cleaning mode to start. The preset time period can be set according to the living habits of the user, for example, the preset time period is 06:00 to 24, this time quantum can be for the user habit to carry out the time quantum of activity, and the time quantum that the rest time quantum can sleep is carried out for the user habit, if the current time is in this preset time quantum, prove that the user has the possibility of getting water, then control induction system start to judge whether someone enters into preset within range, if someone enters into preset within range, the user has the possibility of getting water, then control clean mode and open, clean in advance to solving the higher problem of first cup of water TDS value concentration of purifier, make the user need not to wait, just can in time drink clean water. In addition, if the current time is not within the preset time period, the sensing device is not started, and the cleaning mode is not started, for example, the current time is in a time period in which the user is accustomed to sleeping, and at the moment, the user does not have a demand for getting water, and the sensing device and the cleaning mode do not need to be started. In addition, when the sensing device is started, the cleaning mode is not started when no person moves within a preset range.
Above-mentioned mode of setting up makes the purifier can know the user demand, can select when to clean based on user's life habit, improves the accuracy of the opportunity that clean mode carries out the start to under the prerequisite of the TDS value that can guarantee first cup water in the within range that suits to drink, reduce the frequent cleanness of unnecessary, avoid the waste of water resource.
The cleaning mode of the present invention will be described below.
When the cleaning mode needs to be started, the drain valve 41 is controlled to be opened, and when the preset condition is reached, the drain valve 41 is controlled to be closed. Through the setting of drain pipe 40, when drain valve 41 opens, polluted water behind the reverse osmosis membrane is discharged to waste water pipe 30 through drain pipe 40 by pure water pipe 20, because supercharging device 11 is out of work, can't carry out the moisturizing to pure water pipe 20, at this moment, pure water pipe 20 department pressure release, be less than preset water pressure, make supercharging device 11 start, come to wash sewage, water after the washing is arranged to waste water pipe 30 in by drain pipe 40, the rethread waste water pipe 30 is discharged outside the water purifier, after reaching preset condition, drain valve 41 closes, accomplish cleanly, complete machine system is in the state of standby, guarantee the purity of first glass of water. The setting mode has the advantages that: compared with a mode that a water storage tank needs to be cleaned independently or an auxiliary filter element needs to be used for cleaning the reverse osmosis membrane, the cleaning of water after the reverse osmosis membrane can be finished only through one water discharge pipe 40, and the water purifier does not need to be overlarge in size and too many in parts; the invention has lower production and use cost and can reduce the fault risk of the whole machine system. The above-described cleaning mode will be specifically described in two cases.
Referring to fig. 1, as a possible embodiment, the water outlet end of the water discharge pipe 40 is communicated with the water inlet end of the waste water valve 31. And simultaneously with or before controlling the opening of the drain valve 41, controlling the opening degree of the waste water valve 31 to be in a large hole state. Normally, when the waste water valve 31 is opened, the opening degree thereof includes two states, namely a large hole state (the concentrated water flows out through the large holes of the waste water valve 31) and a small hole state (the concentrated water flows out through the small holes of the waste water valve 31), which can realize the throttling of the water at the water inlet side of the waste water pipe 30, and the water pressure at the pure water pipe 20 will be greater than or equal to the preset water pressure due to the throttling function.
When the opening degree of the waste water valve 31 is in a large-hole state, after the control drain valve 41 is opened, the water at the pure water pipe 20 is drained through the drain pipe 40, at this time, the pressure at the pure water pipe 20 is relieved, the current water pressure is less than the preset water pressure, the supercharging device 11 is started, the water is drained to the pure water pipe 20 through the reverse osmosis filtering device 50 and flows out through the drain pipe 40 to reach the water inlet end of the waste water valve 31, after the supercharging device 11 works for a certain time (for example, about 3 seconds), the water pressure at the pure water pipe 20 is greater than or equal to the preset water pressure due to the throttling effect of the waste water valve 31, the supercharging device 11 stops working, after the supercharging device 11 stops working for a certain time, the water at the pure water pipe 20 flows into the drain pipe 40 again, and no water is supplemented, so that the water at the pure water pipe 20 is relieved again, the supercharging device 11 is started again, and circulates in this way, and the control drain valve 41 is closed and stops cleaning work until the preset condition is reached, wherein, because the opening degree of the waste water valve 31 is in a large-hole state, the supercharging device 11 cannot be started and stopped too frequently within a certain time. As a possible embodiment, the preset condition is that the pressurization device 11 operates at a preset frequency, that is, the drain valve 41 is closed after the pressurization device 11 operates at the preset frequency, wherein the preset frequency can be obtained by theoretical calculation, can be obtained by empirical value, and the like, and for example, the preset frequency is 5 times.
Performing intermittent cleaning, namely performing discharge-flushing on the sewage after the reverse osmosis membrane, and then performing discharge-flushing again, and circulating in this way; the method has the advantages that the sewage is discharged firstly, the remaining dirty water behind the reverse osmosis membrane is less, the TDS value can be obviously reduced, the remaining dirty water is washed again at the moment, the washed water is discharged again, the TDS value behind the reverse osmosis membrane can be further reduced, the circulation is carried out, the effect of high-efficiency cleaning is achieved, and compared with a direct washing mode (clean water and polluted water are always mixed, washed and discharged), the control method not only can be used for high-efficiency cleaning, but also can save water. In addition, the opening degree of the waste water valve 31 is adjusted to be in a large-hole state, so that the starting and stopping frequency of the supercharging device 11 is favorably reduced, and the cleaning work can be completed in a short time. In addition, the control method does not need complex control, and reduces the workload of the water purifier. It should be understood that the waste water valve 31 is in the large-hole state in a broad sense, as long as water is throttled, it can be ensured that the water pressure at the pure water pipe 20 is greater than or equal to the preset water pressure, and it can be ensured that the start-stop frequency of the supercharging device 11 is within a reasonable range, at this time, the opening degree of the waste water valve 31 belongs to the large-hole state, of course, the opening degree of the waste water valve 31 is not limited to the above two states, for example, the waste water valve 31 is the waste water valve 31 whose opening degree can be freely adjusted, the states of the large hole and the small hole can be realized by adjusting the opening degree of the waste water valve 31, the waste water valve 31 may include various types of waste water valves known in the art or possibly occurring in the future, and the opening degree state thereof may be adjusted accordingly. As an alternative embodiment, although the above description has been made on the condition that the opening degree of the waste water valve 31 is in the large-hole state, the present invention may adjust the opening degree state thereof, for example, the small-hole state, as long as it is ensured that the water pressure at the pure water pipe 20 will be greater than or equal to the preset water pressure, and it is within the protection scope of the present invention.
Referring to fig. 2, as another possible embodiment, the water outlet end of the water discharge pipe 40 is communicated with the water outlet end of the waste water valve 31. At this time, when cleaning is required, the drain valve 41 is opened, and cleaning can be performed by the above-discussed manner of starting the pressurization device 11 through the high-pressure switch 21, that is, the pressure at the pure water pipe 20 is released, the current water pressure is lower than the preset water pressure, and the pressurization device 11 is started, because the water outlet end of the drain pipe 40 is communicated with the water outlet end of the waste water valve 31, water is not throttled, the current water pressure at the pure water pipe 20 is still lower than the preset water pressure, and the pressurization device 11 is always in a starting state, so that contaminated water can be continuously drained through the drain pipe 40. Of course, the water purifier is also applicable to the control method of the present invention without providing the high-pressure switch 21, that is, after the drain valve 41 is opened, the pressurizing device 11 may be controlled to be activated, so that the polluted water can be continuously discharged. Thereby achieving the effect of discharging high-concentration water.
Whether the outlet end of the drain pipe 40 is connected to the inlet end of the waste valve 31 or the outlet end of the waste valve 31. The control method for controlling the closing of the drain valve 41 after the preset condition is reached includes the following three conditions.
In the first case: when the preset cleaning time has elapsed, the drain valve 41 is controlled to be closed. The preset cleaning time may be obtained through theoretical calculation or may be obtained through empirical values, for example, the preset cleaning time is 60s. The arrangement mode does not need to additionally increase parts and components, and reduces the cost.
In the second case: acquiring a TDS value TDS1 at a pure water pipe 20 and acquiring a TDS value TDS2 at a raw water pipe 10; judging the size of the ratio of the TDS2 to the TDS1 and a preset ratio; when the ratio of the TDS2 to the TDS1 is smaller than the preset ratio, the drain valve 41 is controlled to be closed. When the ratio of TDS2 and TDS1 is less than the preset ratio, then prove that pure water goes out the water qualified this moment, can supply the user to drink, drain valve 41 closes can. For example, when the ratio of 1-TDS2/TDS1 is more than or equal to 0.85, the drain valve 41 is controlled to be closed, and the water discharge is stopped, otherwise, the water discharge is continued. Through the arrangement mode, the water quality condition of the discharged water can be accurately acquired, so that the accurate judgment of stopping cleaning is facilitated, water can be saved, and the water discharging requirement can be met.
In the third case: acquiring a TDS value TDS1 at the pure water pipe 20; determining the drainage time based on the range of TDS1; when the drain time has elapsed, the drain valve 41 is controlled to be closed. Wherein the higher the value of TDS1, the longer the time to drain, for example, when TDS1<200mg/L, drain 30s; draining for 60s when 200mg/L < TDS1<500 mg/L; when 500mg/L < TDS1, 90s of water is drained. Through the arrangement mode, the water quality condition of the discharged water can be accurately acquired, so that the accurate judgment of stopping cleaning is facilitated, water can be saved, and the water discharging requirement can be met.
In addition, when the water outlet end of the water discharge pipe 40 is connected to the water inlet end of the waste water valve 31, the preset condition further includes controlling the drain valve 41 to close after the supercharging device 11 operates for a preset frequency.
In conclusion, the invention can accurately acquire the interval time for the water purifier to start cleaning, avoid the waste of water sources and realize the effect of taking water when the water purifier is started. Compared with the scheme of adding an auxiliary filter element or a water storage device, the water storage device does not need to add an additional device, and is simple in waterway structure, small in size and low in cost. Compared with a drainage scheme that pure water is discharged at fixed time or is cleaned after a pure water valve is opened, the invention only carries out pre-judgment water taking when a human body approaches, and saves the use cost and water resources of users. And the water can be further saved by an intermittent water path cleaning mode.
A possible specific embodiment of the method for controlling a water purifier according to the present invention is described below.
As shown in fig. 4, the method for controlling a water purifier according to the present invention may include the steps of:
step S400: the faucet was turned off.
Step S401: and detecting the TDS value of the raw water.
Step S402: the interval time is determined based on the raw water TDS value.
Step S403: determine "elapsed interval time? If "true," step S404 is executed if true, and step S408 is executed if false.
Step S404: determine "is the current time within a preset time period? If "yes", step S405 is executed, and if no, step S408 is executed.
Step S405: the sensing device is activated.
Step S406: determine "someone within a preset range? If "yes", step S407 is executed, and if no, step S408 is executed.
Step S407: the cleaning mode is turned on.
Step S408: the cleaning mode is not turned on.
Those skilled in the art will appreciate that the water purifier may also include other known structures such as a processor, a controller, a memory, etc., wherein the memory includes, but is not limited to, a ram, a flash memory, a rom, a prom, a volatile memory, a non-volatile memory, a serial memory, a parallel memory or a register, etc., and the processor includes, but is not limited to, a CPLD/FPGA, a DSP, an ARM processor, a MIPS processor, etc. Such well-known structures are not shown in the drawings in order to not unnecessarily obscure embodiments of the present disclosure.
Although the foregoing embodiments describe the steps in the foregoing sequential order, those skilled in the art can understand that, in order to achieve the effect of the present embodiment, different steps need not be executed in such an order, and may be executed simultaneously (in parallel) or in an inverse order, for example, steps S400 and S401 may be executed simultaneously or in an inverse order, and these simple changes are within the protection scope of the present invention.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (10)

1. A control method of a water purifier is characterized in that the water purifier comprises the following steps:
a reverse osmosis filtration device;
the raw water pipe is provided with a supercharging device and is communicated with a raw water inlet of the reverse osmosis filtering device;
the pure water pipe is communicated with a pure water outlet of the reverse osmosis filter device, and a pure water valve is arranged at the outlet of the pure water pipe;
the waste water pipe is communicated with a waste water outlet of the reverse osmosis filtering device;
the control method comprises the following steps:
acquiring raw water quality information when the pure water valve is in a closed state;
determining interval time for starting a cleaning mode based on the raw water quality information;
and selectively controlling the cleaning mode to be started after the interval time.
2. The method as claimed in claim 1, wherein the water purifier further comprises a drain pipe, an inlet end of the drain pipe is communicated with the purified water pipe; the water outlet end of the drain pipe is communicated with the waste water pipe, the drain pipe is provided with a drain valve, the pure water pipe is provided with a high-pressure switch, and the high-pressure switch is set to send out a starting signal to start the supercharging device when the current water pressure is less than the preset water pressure; when the current water pressure is greater than or equal to the preset water pressure, sending a closing signal to close the supercharging device;
the step of "controlling the cleaning mode to be on" further includes:
controlling the drain valve to be opened;
and controlling the drainage valve to be closed after the preset condition is reached.
3. The method for controlling a water purifier according to claim 2, wherein a waste water valve is arranged on the waste water pipe, and the water outlet end of the drain pipe is communicated with the water inlet end of the waste water valve;
simultaneously with or before the step of "controlling the drain valve to be opened", the control method further includes:
and controlling the opening degree of the waste water valve to be in a large-hole state.
4. The method for controlling the water purifier according to claim 2, wherein a waste water valve is arranged on the waste water pipe, and the water outlet end of the water outlet pipe is communicated with the water outlet end of the waste water valve.
5. The method as claimed in claim 3, wherein the step of controlling the drain valve to close after the preset condition is reached further comprises:
and after the supercharging device operates for a preset frequency, controlling the drainage valve to be closed.
6. The method of controlling a water purifier according to claim 2,
the step of controlling the closing of the drain valve when the preset condition is reached further comprises:
and after the preset cleaning time, controlling the drainage valve to be closed.
7. The method of controlling a water purifier according to claim 2,
before the step of controlling the drain valve to be closed when the preset condition is reached, the control method further includes:
obtaining a TDS value TDS1 at a pure water pipe and obtaining a TDS value TDS2 at a raw water pipe;
judging the size of the ratio of the TDS2 to the TDS1 and a preset ratio;
the step of controlling the closing of the drain valve when the preset condition is reached further comprises:
when the ratio of the TDS2 to the TDS1 is smaller than a preset ratio, controlling the drain valve to be closed; or alternatively
Before the step of controlling the drain valve to be closed when the preset condition is reached, the control method further includes:
acquiring a TDS value TDS1 at a pure water pipe;
determining a drainage time based on a range where the TDS1 is located;
the step of controlling the closing of the drain valve when the preset condition is reached further comprises:
and controlling the drainage valve to be closed after the drainage time.
8. The method for controlling a water purifier according to claim 1, wherein the step of acquiring raw water quality information in a state where the pure water valve is closed further comprises:
acquiring a TDS value TDS3 at the raw water pipe when the pure water valve is in a closed state;
the step of determining the interval time for which the cleaning mode is activated based on the raw water quality information further includes:
determining the interval time for activating the cleaning mode based on the range of the TDS3; or
The raw water quality information is local raw water quality information acquired through a cloud.
9. The method as claimed in claim 1, wherein the water purifier is provided with a sensing device, and the step of selectively controlling the cleaning mode to be turned on after the interval time further comprises:
when the interval time passes, selectively controlling the induction device to start;
when the induction device is controlled to be started, judging whether a person moves within a preset range;
and when the judgment result is yes, controlling the cleaning mode to be started.
10. The method as claimed in claim 9, wherein the step of selectively controlling the activation of the sensing device after the time interval has elapsed further comprises:
when the time passes, acquiring the current time;
judging whether the current time is in a preset time period or not;
and when the current time is in the preset time period, controlling the induction device to start.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170349454A1 (en) * 2015-01-30 2017-12-07 Foshan Shunde Midea Water Dispenser Mfg. Co., Ltd. Water purification system
WO2018161456A1 (en) * 2017-03-07 2018-09-13 佛山市顺德区美的饮水机制造有限公司 Water filtering system
CN108623038A (en) * 2017-03-22 2018-10-09 佛山市顺德区美的饮水机制造有限公司 Reverse osmosis membrane purifier and water purifier
CN108793525A (en) * 2017-04-27 2018-11-13 佛山市顺德区美的饮水机制造有限公司 Water cleaning systems
CN108793457A (en) * 2018-05-25 2018-11-13 珠海格力电器股份有限公司 A kind of water cleaning systems, process for purifying water and device
CN210117291U (en) * 2019-06-24 2020-02-28 浙江绍兴苏泊尔生活电器有限公司 Large flux water purifier
CN211896173U (en) * 2020-03-10 2020-11-10 浙江绍兴苏泊尔生活电器有限公司 RO water purifier capable of limiting TDS (total dissolved solids) of first cup of water to be higher

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170349454A1 (en) * 2015-01-30 2017-12-07 Foshan Shunde Midea Water Dispenser Mfg. Co., Ltd. Water purification system
WO2018161456A1 (en) * 2017-03-07 2018-09-13 佛山市顺德区美的饮水机制造有限公司 Water filtering system
CN108623038A (en) * 2017-03-22 2018-10-09 佛山市顺德区美的饮水机制造有限公司 Reverse osmosis membrane purifier and water purifier
CN108793525A (en) * 2017-04-27 2018-11-13 佛山市顺德区美的饮水机制造有限公司 Water cleaning systems
CN108793457A (en) * 2018-05-25 2018-11-13 珠海格力电器股份有限公司 A kind of water cleaning systems, process for purifying water and device
CN210117291U (en) * 2019-06-24 2020-02-28 浙江绍兴苏泊尔生活电器有限公司 Large flux water purifier
CN211896173U (en) * 2020-03-10 2020-11-10 浙江绍兴苏泊尔生活电器有限公司 RO water purifier capable of limiting TDS (total dissolved solids) of first cup of water to be higher

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