CN114249400A

CN114249400A - Ion concentration adjusting method, water treatment system and computer readable storage medium

Info

Publication number: CN114249400A
Application number: CN202011435614.4A
Authority: CN
Inventors: 宾倩韵; 孙天厚; 刘梦薇; 郑跃东
Original assignee: Foshan Midea Qinghu Water Purification Equipment Co ltd; Midea Group Co Ltd
Current assignee: Foshan Midea Qinghu Water Purification Equipment Co ltd; Midea Group Co Ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2022-03-29

Abstract

The embodiment of the invention provides an ion concentration adjusting method, a water treatment system and a computer readable storage medium, wherein the ion concentration adjusting method is used for the water treatment system, the water treatment system comprises a membrane stack and two electrodes arranged on two sides of the membrane stack, the membrane stack comprises a concentrated water chamber and a fresh water chamber which have different ion concentrations, and the ion concentration adjusting method comprises the following steps: acquiring a concentration adjusting instruction; determining the target ion concentration of the liquid in the fresh water chamber according to the concentration regulation instruction; determining a membrane stack voltage difference value according to the target ion concentration; and controlling the difference of the voltages applied to the two electrodes to be the voltage difference of the membrane stack until the ion concentration in the fresh water chamber is the target ion concentration. The ion concentration adjusting method in the technical scheme of the invention can adjust the target ion concentration of the fluid on line, meets the requirements of users on different ion concentrations of the water treatment system, and is suitable for more application scenes.

Description

Ion concentration adjusting method, water treatment system and computer readable storage medium

Technical Field

The invention relates to the technical field of water purification, in particular to an ion concentration adjusting method, a water treatment system and a computer readable storage medium.

Background

In the water treatment system in the prior art, the ion concentration of the outlet water is fixed, online adjustment cannot be realized, and the water requirements of users for different ion concentrations cannot be met.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

In view of the above, a first aspect of the embodiments of the present invention provides an ion concentration adjusting method.

A second aspect of embodiments of the present invention provides a water treatment system.

A third aspect of embodiments of the present invention provides a computer-readable storage medium.

In order to achieve the above object, an embodiment of a first aspect of the present invention provides an ion concentration adjusting method for a water treatment system, the water treatment system including a membrane stack and two electrodes disposed on two sides of the membrane stack, the membrane stack including a concentrate chamber and a dilute chamber, which have different ion concentrations, the ion concentration adjusting method including: acquiring a concentration adjusting instruction; determining the target ion concentration of the liquid in the fresh water chamber according to the concentration regulation instruction; determining a membrane stack voltage difference value according to the target ion concentration; and controlling the difference of the voltages applied to the two electrodes to be the voltage difference of the membrane stack until the ion concentration in the fresh water chamber is the target ion concentration.

According to the ion concentration adjusting method provided by the first aspect of the invention, the ion concentration of the water treatment system is adjusted, specifically, the water treatment system comprises a membrane stack, the membrane stack comprises a concentrated water chamber and a fresh water chamber, the ion concentrations of the fresh water chamber and the concentrated water chamber are different, in addition, two electrodes are arranged on two sides of the membrane stack, and the ion exchange in the membrane stack can be realized by applying voltages to the two electrodes. Furthermore, the ion concentration adjusting method of the water treatment system in the scheme is mainly used for adjusting the ion concentration of the fluid in the fresh water chamber. Therefore, the water treatment system firstly obtains a concentration adjustment instruction, and generally, when a user uses water, the water which is subjected to electrodialysis and has a low ion concentration in the fresh water chamber is generally used, so that the water treatment system firstly determines the target ion concentration required in the fresh water chamber according to the concentration adjustment instruction, and then determines a corresponding membrane stack voltage difference value according to the target ion concentration, and applies the membrane stack voltage difference value to the electrodes on the two sides of the membrane stack. The electric field for covering each fresh water chamber and each concentrated water chamber is formed in the membrane stack by applying voltage on the two electrodes, and the negative and positive ions in the fluid can be driven to move under the action of the electric field and enter the adjacent treatment chambers by passing through the ion exchange membrane between the fresh water chamber and the concentrated water chamber, so that the ion concentrations of the fluid in the fresh water chamber and the concentrated water chamber are different. It will be appreciated that by applying different stack voltage differences, the ion concentrations in the concentrate and fresh water chambers will also change. Specifically, since the ions in the fluid are driven by the electric field to move, it can be understood that the larger the voltages applied to the two electrodes, the more the ions move, and the larger the difference between the ion concentrations of the fluids in the adjacent processing chambers. When the ion concentrations of the fluids in the dilute and concentrate chambers are balanced by the voltage applied between the two electrodes, the ion concentrations are no longer changing. Therefore, the ion concentration in the fresh water chamber is adjusted by adjusting the voltage values applied to the two electrodes, so that the ion concentration of the fluid in the fresh water chamber reaches the ion concentration value corresponding to the applied voltage, the ion concentration in the fresh water chamber in the water treatment system can be correspondingly adjusted according to the setting of a user, and the water use requirements of the user for different ion concentrations are met.

In addition, the ion concentration adjusting method in the above scheme provided by the invention can also have the following additional technical features:

in the above technical solution, after the ion concentration in the fresh water chamber is the target ion concentration, the method further includes: and controlling the difference of the voltages applied to the two electrodes to be the holding voltage difference.

In this solution, in the membrane stack, in order to move the ions in the fluid with lower ion concentration in the dilute water chamber to the fluid with higher ion concentration in the concentrated water chamber, a voltage difference needs to be applied to the electrodes on both sides of the membrane stack to drive the fluid with higher ion concentration to move. It will be appreciated that if the voltage is turned off, the ions in the fluid will move by diffusion under the effect of osmotic pressure, so that the ion concentrations in the concentrate and fresh water chambers tend to be uniform, and eventually the fluid concentrations in the two chambers will be brought back into agreement. In order to ensure that the ion concentration does not change, a certain voltage difference value is only needed to be applied between the two electrodes, namely the pressure maintaining voltage difference value can be balanced with the osmotic pressure, namely the ions are kept from migrating. Therefore, when the ion concentration in the fresh water chamber reaches the target ion concentration set by the user, a voltage holding difference is applied to the two electrodes to maintain the ion concentration in the fresh water chamber.

Wherein, the voltage holding difference can be 5 v.

Among the above-mentioned technical scheme, water treatment system includes the water tank to and the inlet tube that communicates with membrane stack and water tank, be equipped with the flow valve on the inlet tube, exert the difference of the voltage at two electrodes in the control before the membrane stack voltage difference, still include: determining the target inflow rate of water fed into the fresh water chamber through the water inlet pipe according to the concentration adjusting instruction; and determining a first water inlet flow and a second water inlet flow which respectively flow into the fresh water chamber and the concentrated water chamber through the flow valve until the first water inlet flow is the target water inlet flow.

In the technical scheme, the water inlet pipe is communicated with the water tank and the membrane stack and is connected with the fresh water chamber and the concentrated water chamber, and water in the water tank can enter the membrane stack through the water inlet pipe. The flow valve is arranged on the water inlet pipe and can control the inflow rate. The concentration regulation instruction obtained by the water treatment system also comprises the target inflow rate of the fresh water chamber. After the water treatment system obtains the target water inflow rate, the flow valve is controlled to adjust the first water inflow rate and the second water inflow rate flowing into the fresh water chamber and the concentrated water chamber, and finally the first water inflow rate is the target water inflow rate. The first water inlet flow is the water inlet flow flowing into the fresh water chamber, and the second water inlet flow is the water inlet flow flowing into the concentrated water chamber. It will be appreciated that the greater the target feed water flow, the closer the ion concentration of the fluid in the fresh water chamber will be to that of the feed water and, therefore, the effect on the stack voltage difference. The corresponding membrane stack voltage difference value can be determined according to different target ion concentrations and target inflow rates, so that the ion concentration in the fresh water chamber is the target ion concentration under the condition that the water enters the fresh water chamber from the water inlet pipe.

It should be noted that the inlet pipe is connected to the membrane stack, and the inlet water flows into the fresh water chamber and the concentrated water chamber respectively. Because the inlet water in the inlet pipe does not flow to the places outside the fresh water chamber and the concentrated water chamber, the first inlet water flow can be controlled to be the target inlet water flow no matter the flow valve controls the first inlet water flow or the second inlet water flow. Of course, the inlet pipe can be divided into two inlet branch pipes before entering the membrane stack, the two inlet branch pipes are respectively connected with the fresh water chamber and the concentrated water chamber, the inlet pipe connected with the fresh water chamber or the concentrated water chamber is provided with a flow valve, or the two inlet branch pipes are provided with flow valves, so that the control of the first inlet flow can be conveniently realized.

It can be understood that there will be a certain proportion of water usage between the concentrate chamber and the fresh water chamber, and the flow valve can be used to control the specific flow rate flowing into the concentrate chamber and the fresh water chamber, for example, after the specified flow rate flows into the concentrate chamber and the fresh water chamber, the corresponding inlet pipe or inlet branch pipe is controlled to be closed, and the flow rate flowing into the concentrate chamber and the fresh water chamber can also be controlled by controlling the size of the valve port of the flow valve.

In the above technical solution, controlling the difference between the voltages applied to the two electrodes to be the voltage difference of the membrane stack until the ion concentration in the fresh water chamber is the target ion concentration specifically includes: obtaining the concentration of fresh water ions in the fluid in the fresh water chamber; determining the size relation between the concentration of the fresh water ions and the concentration of the target ions; if the concentration of the fresh water ions is less than the target ion concentration, the concentration of the fresh water ions is increased according to a voltage disconnection rule until the concentration of the fresh water ions is the target ion concentration; or if the concentration of the fresh water ions is greater than the target ion concentration, reducing the concentration of the fresh water ions according to a static pressurization rule until the concentration of the fresh water ions is the target ion concentration.

According to the technical scheme, the concentration adjusting instruction obtained by the water treatment system comprises target ion concentration and target inflow water flow. And then, the water treatment system acquires the fresh water ion concentration of the fluid in the fresh water chamber, compares the fresh water ion concentration with the target ion concentration, and determines the size relation between the fresh water ion concentration and the target ion concentration. It will be appreciated that there are currently possible situations in which: the ion concentration of the fresh water is smaller than the target ion concentration, which indicates that the ion concentration in the fresh water chamber is lower than the target ion concentration, the ion concentration of the fresh water should be increased by the water treatment system, and the corresponding treatment rule is a voltage disconnection rule. Or the ion concentration of the fresh water is greater than the target ion concentration, the ion concentration of the fresh water should be reduced by the water treatment system, and the corresponding treatment rule is a static pressurization rule. Finally, no matter how the magnitude relation of the ion concentration of the fresh water and the target ion concentration is, the water treatment system can ensure that the ion concentration of the outlet water reaches the target ion concentration.

Of course, if the ion concentration of the fresh water is determined to be equal to the target ion concentration through detection, it can be shown that the current water in the fresh water chamber meets the use requirements of users, and the current voltage can be kept unchanged to continuously purify the effluent.

In the above technical scheme, the water treatment system comprises: the water outlet pipe is provided with a first valve, and the waste water pipe is provided with a second valve; the water treatment system further comprises: the water return pipe is communicated with the water tank and the waste water pipe, one end of the water return pipe, which is connected with the waste water pipe, is arranged between the second valve and the membrane stack, the water return pipe is provided with a third valve, and the water return pipe is provided with a fourth valve.

In the technical scheme, the pump body is arranged on the water inlet pipe, and the water pressure of fluid in the water inlet pipe can be increased by the pump body, so that the correct flow direction of the fluid in the pipeline is ensured under the action of the water pressure. If the pump body is not started, the fluid in the pipeline of the water treatment system cannot flow and keeps static. In addition, the water treatment system also comprises a shunt pipe, and two ends of the shunt pipe are respectively communicated with the water outlet pipe and the waste water pipe, specifically, one end of the shunt pipe is connected to the position in front of the first valve in the water outlet pipe, namely the pipe section between the first valve and the membrane stack, and the other end of the shunt pipe is connected to the position in front of the second valve in the waste water pipe, namely the pipe section between the second valve and the membrane stack, so that the fluid in the water outlet pipe can be guided into the waste water pipe through the shunt pipe. And two ends of the water return pipe are respectively communicated with the waste water pipe and the water tank, so that the fluid in the fresh water chamber and the concentrated water chamber in the membrane stack can be uniformly discharged back to the water tank. And when the third valve is closed, all the fluid with low ion concentration flows out from the water outlet pipe. In addition, a fourth valve is arranged on the water return pipe, when the fourth valve is opened, the fluid in the waste water pipe can flow into the water tank from the water return pipe, and when the fourth valve is closed, the fluid in the waste water pipe cannot flow into the water tank from the water return pipe.

It should be noted that, in order to reduce the pollution to the water source during the backflow, the water tank may be divided into a raw water tank and a waste water tank according to the function, the raw water tank is used to store the water that has not undergone the electrodialysis, and the fluid retained in the pipeline is circulated back to the raw water tank by the control valve body, and of course, after the electrodialysis is performed, the water with higher ion concentration in the concentrated water chamber may be discharged to the waste water tank for centralized treatment.

In the above technical scheme, reducing the fresh water ion concentration according to the static pressurization rule specifically includes: adjusting the difference of the voltages of the two electrodes according to the difference of the voltages of the membrane stack; determining first adjusting time and second adjusting time according to the magnitude relation between the concentration of the fresh water ions and the concentration of the target ions and the target water inlet flow; controlling the pump body to keep closed for a first adjusting time; controlling the pump body to start, determining the starting time of the pump body, closing the first valve and the second valve, and opening the third valve and the fourth valve; and when the starting time exceeds the second adjusting time, the first valve and the second valve are opened, and the third valve and the fourth valve are closed.

In the technical scheme, when the ion concentration in the fresh water chamber is adjusted according to the static pressurization rule, the ion concentration of the fresh water and the target ion concentration are judged firstly, specifically, when the ion concentration of the fresh water is greater than the target ion concentration, the voltage difference value of the electrodes on two sides of the membrane stack is adjusted to be the membrane stack voltage difference value by the water treatment system, and according to the size relation between the ion concentration of the fresh water and the target ion concentration and the target inflow water flow, the first adjusting time and the second adjusting time can be determined so as to provide time support for the subsequent control of the pump body and different valve bodies.

It is understood that the difference in membrane stack voltage is the voltage difference corresponding to the target ion concentration.

Further, when the control is carried out, the pump body is firstly closed for a period of time, and the closing time is the first adjusting time. During the first conditioning time, fluid does not flow in the conduits and membrane stack of the water treatment system. At this moment, under the effect of membrane stack voltage difference, can drive the ion in the fluid and take place to remove, make fresh water ion concentration be greater than target ion concentration gradually, in first regulation time, because the pump body does not drive rivers and flow, so the fluid in the membrane stack also does not take place to flow, is favorable to generating the electric field between the electrode of membrane stack both sides to change ion concentration fast, thereby reach or be close to target ion concentration faster. It can be understood that the larger the difference between the fresh water ion concentration and the target ion concentration is, the longer the first adjustment time is on the basis that the voltage is kept constant. After the first adjusting time is over, the water treatment system starts the pump body, and meanwhile, timing is started to record the starting time of the pump body. When the pump body is started, the first valve and the second valve are controlled to be closed, the third valve and the fourth valve are controlled to be opened, and at the moment, fluid discharged from the water outlet pipe and the waste water pipe flows into the water tank from the water return pipe. This is because at this stage, although the ion concentration of the fresh water has reached the target ion concentration, there remains fluid in the pipeline that has an ion concentration that does not meet the target ion concentration, and this fluid, if discharged from the outlet pipe, will affect the outlet result. Therefore, the part of the fluid flows back to the water tank through the return pipe, and the part of the fluid can be fully utilized to avoid waste. When the starting time exceeds the second adjusting time, the first valve and the second valve are opened, the third valve and the fourth valve are closed, at the moment, the fluid in the fresh water chamber can normally flow out through the water outlet pipe for a user to use, and the fluid in the concentrated water chamber can be discharged from the waste water pipe, and particularly, the fluid can flow back to the waste water tank for uniform collection treatment. And determining the second adjusting time according to the difference value of the fresh water ion concentration and the target inflow water flow.

It is understood that, before the ion concentration adjusting method is performed, the ion concentration of the fluid in the water outlet pipe is the same as or similar to the ion concentration of the fresh water, and when the method is performed, the larger the difference between the ion concentration of the fresh water and the ion concentration of the target is, the more time is required for flushing, and therefore, the longer the second adjusting time is set. Meanwhile, if the inflow rate is large, the water outlet pipe can be quickly flushed, and the flushing needs to be carried out in a short time.

It is emphasized that, when the concentration of the fresh water ions is greater than the target ion concentration, the static pressurization rule is adopted, so that the time for the concentration of the fresh water ions to reach the target ion concentration can be obviously shortened, and meanwhile, the fluid discharged from the water outlet pipe is ensured not to dope the fluid which does not meet the requirement of the ion concentration in the pipeline and meets the requirement of the target ion concentration.

Among the above-mentioned technical scheme, improve fresh water ion concentration according to the disconnection voltage rule, specifically include: determining third adjusting time and fourth adjusting time according to the magnitude relation between the concentration of the fresh water ions and the concentration of the target ions and the target water inlet flow; controlling the pump body to keep closed for a third adjusting time; and controlling the difference of the voltages applied to the two electrodes to be 0 at a third adjustment time; controlling the difference of the voltages applied to the two electrodes as the difference of the membrane stack voltages; controlling the pump body to start, determining the starting time of the pump body, closing the first valve and the second valve, and opening the third valve and the fourth valve; and when the starting time exceeds a fourth adjusting time, opening the first valve and the second valve, and closing the third valve and the fourth valve.

In the technical scheme, when the ion concentration in the fresh water chamber is adjusted according to the disconnection voltage rule, the ion concentration of the fresh water and the target ion concentration are judged firstly, and specifically, when the ion concentration of the fresh water is smaller than the target ion concentration, the water treatment system determines the third adjusting time and the fourth adjusting time according to the size relation between the ion concentration of the fresh water and the target ion concentration and the target inflow water flow rate, so that time support is provided for a follow-up control pump body and different valve bodies.

When in control, the pump body is firstly closed, and the closing time is the third adjusting time. In the third adjustment time, in the pipeline and the membrane stack of the water treatment system, the pump body does not drive water to flow, so that the fluid in the membrane stack does not flow. At this time, by controlling the voltage difference between the two electrodes to be 0, because the environment of the fluid between the fresh water chamber and the concentrated water chamber of the membrane stack does not generate an electric field, and the concentration difference between the two cannot be maintained, ions in the fluid move through diffusion, so that the ion concentration in the fresh water chamber starts to rise again gradually, and when the ion concentration rises back to the target ion concentration, the water demand of a user can be met.

It can be understood that, under the condition that the third adjustment time is infinitely long, that is, under the limit state, the ion concentration in the fresh water chamber and the ion concentration in the concentrated water chamber are kept the same, at this time, the voltage between the two electrodes is controlled according to the voltage difference of the membrane stack, which is equivalent to reapplying the voltage, so that the adjustment of the ion concentration of the fresh water is realized under the action of the voltage difference of the membrane stack.

Generally, the larger the difference between the fresh water ion concentration and the target ion concentration is, the longer the third adjustment time should be set. And after the third adjusting time is finished, starting the pump body by the water treatment system, and determining the starting time of the pump body.

Before the starting of the pump body, the pump body is controlled to be closed for a third adjusting time, in the process, the voltage applied to the two electrodes is controlled to be zero, and after the first adjusting time is finished, the water treatment system starts the pump body, and meanwhile, timing is started to record the starting time of the pump body. When the pump body is started, the first valve and the second valve are controlled to be closed, the third valve and the fourth valve are controlled to be opened, and at the moment, fluid discharged from the water outlet pipe and the waste water pipe flows into the water tank from the water return pipe. This is because at this stage, although the ion concentration of the fresh water has reached the target ion concentration, there remains fluid in the pipeline that has an ion concentration that does not meet the target ion concentration, and this fluid, if discharged from the outlet pipe, will affect the outlet result. Therefore, the part of the fluid flows back to the water tank through the return pipe, and the part of the fluid can be fully utilized to avoid waste. When the starting time exceeds the fourth adjusting time, the first valve and the second valve are opened, the third valve and the fourth valve are closed, at the moment, the fluid in the fresh water chamber can normally flow out through the water outlet pipe for a user to use, and the fluid in the concentrated water chamber can be discharged from the waste water pipe, and particularly, the fluid can flow back to the waste water tank for uniform collection treatment. And the difference value between the fresh water ion concentration and the target inflow water flow can determine the third adjusting time. It can be understood that, before the ion concentration adjustment method is performed, the ion concentration of the fluid in the water outlet pipe is the same as or similar to the ion concentration of the fresh water, and when the ion concentration adjustment method is performed, the larger the difference between the ion concentration of the fresh water and the target ion concentration is, the more time is required for flushing, and thus the longer the fourth adjustment time is. Meanwhile, if the water inflow rate is large, the water outlet pipe can be quickly washed, and the water needs to be washed in a short time. The fourth adjustment time can be determined by the difference between the concentration of the fresh water ions and the concentration of the target ions and the target inflow water flow rate.

Therefore, when the concentration of the fresh water ions is less than the target ion concentration, the time for the concentration of the fresh water ions to reach the target ion concentration can be obviously shortened by adopting the voltage cut-off rule, and meanwhile, the fluid discharged from the water outlet pipe is ensured not to dope the fluid which does not meet the requirement of the ion concentration in the pipeline, and the requirement of the target ion concentration is met.

Among the above-mentioned technical scheme, be equipped with heating device on the outlet pipe, before confirming the membrane stack voltage difference according to target ion concentration, still include: acquiring the outlet water temperature of the outlet pipe; determining a target temperature value of the heating device according to the concentration adjusting instruction; and controlling the heating device to heat the fluid in the water outlet pipe until the water outlet temperature is the target temperature value.

In the technical scheme, the heating device is arranged on the water outlet pipe, so that the fluid discharged by the water outlet pipe can be heated. Before the membrane stack voltage difference value is determined, a target temperature value is obtained according to a concentration adjusting instruction. The fluid in the water outlet pipe can be heated by controlling the heating device, specifically, the fluid is heated to a target temperature value, so that the water outlet temperature reaches the target temperature value.

Furthermore, the heating device can adjust the heating power according to the difference value between the target temperature value and the current effluent temperature, so that the effluent temperature can quickly reach the target temperature value.

In the above technical solution, determining the target temperature value of the heating device according to the concentration adjustment instruction specifically includes: determining the target ion concentration according to the concentration adjusting instruction; and determining a target temperature value corresponding to the target ion concentration and the target inflow water flow.

In the technical scheme, the target temperature value is well corresponded to the target ion concentration and the target inflow water flow in advance, so that the target inflow water flow corresponding to the target ion concentration and the target temperature value can be obtained together when the concentration adjusting instruction is obtained, and the water treatment system can provide different application scenes conveniently.

For a water treatment system, when a user uses the water treatment system, the user usually sets a target ion concentration and a target inflow water flow rate according to different purposes of use, and the user usually corresponds to different target temperatures.

Like common purifier, can set for different use scenes to the user, like making coffee, making tea, making milk powder etc. can set for suitable target ion concentration, target inflow according to respective water characteristics to and the target temperature value that corresponds, the user can directly select out the water mode like this, and convenient follow purifier water intaking has saved and has carried out independent setting at every turn.

An embodiment of a second aspect of the invention provides a water treatment system comprising: a processor and a memory, the memory having stored therein a computer program, the processor being adapted, when executing the computer program, to carry out the steps of the ion concentration adjustment method according to any one of the embodiments of the first aspect described above.

In an embodiment of the water treatment system of the present invention, the water treatment system includes a processor and a memory, and since the processor can execute a computer program or an instruction stored in the memory and implement any one of the ion concentration adjusting methods of the first aspect when executing the computer program or the instruction, the water treatment system of the present invention has all the beneficial effects of the ion concentration adjusting method in any one of the above technical solutions, and details are not repeated herein.

In the above technical solution, the water treatment system further comprises: the membrane stack comprises a concentrated water chamber and a fresh water chamber which have different ion concentrations; the pump body is communicated with the membrane stack through a water inlet pipe; the water outlet pipe is communicated with the fresh water chamber and is provided with a first valve; the waste water pipe is communicated with the concentrated water chamber, and a second valve is arranged on the waste water pipe; the water diversion pipe is communicated with the waste water pipe and the water outlet pipe, one end of the water diversion pipe, which is connected with the water outlet pipe, is arranged between the membrane stack and the first valve, and the water diversion pipe is provided with a third valve; and the water return pipe is communicated with the water tank and the waste water pipe, one end of the water return pipe, which is connected with the waste water pipe, is arranged between the second valve and the membrane stack, and a fourth valve is arranged on the water return pipe.

In the technical scheme, the water treatment system comprises a membrane stack, the membrane stack comprises a concentrated water chamber and a fresh water chamber, and the ion concentrations of the fresh water chamber and the concentrated water chamber are different. Two electrodes are arranged on two sides of the membrane stack. In addition, through being equipped with the pump body on the inlet tube, the pump body can increase the water pressure of the interior fluid of inlet tube to guarantee the correct flow direction of fluid in the pipeline under hydraulic effect. If the pump body is not started, the fluid in the pipeline of the water treatment system cannot flow and keeps static. In addition, the water treatment system also comprises a shunt pipe, and two ends of the shunt pipe are respectively communicated with the water outlet pipe and the waste water pipe, specifically, one end of the shunt pipe is connected to the position in front of the first valve in the water outlet pipe, namely the pipe section between the first valve and the membrane stack, and the other end of the shunt pipe is connected to the position in front of the second valve in the waste water pipe, namely the pipe section between the second valve and the membrane stack, so that the fluid in the water outlet pipe can be guided into the waste water pipe through the shunt pipe. And two ends of the water return pipe are respectively communicated with the waste water pipe and the water tank, so that the fluid in the fresh water chamber and the concentrated water chamber in the membrane stack can be uniformly discharged back to the water tank. And when the third valve is closed, all the fluid with low ion concentration flows out from the water outlet pipe. In addition, a fourth valve is arranged on the water return pipe, when the fourth valve is opened, the fluid in the waste water pipe can flow into the water tank from the water return pipe, and when the fourth valve is closed, the fluid in the waste water pipe cannot flow into the water tank from the water return pipe.

Of course, the water treatment system has steps for performing the ion concentration adjustment method via the processor and the memory, so that the ion concentration of the fluid in the fresh water chamber can be adjusted by applying a stack voltage difference to the two electrodes on both sides of the stack. And the purpose of quickly discharging the fluid meeting the target ion concentration from the water outlet pipe is realized by controlling the pump body, the water outlet pipe, the waste water pipe, the water distribution pipe and the water return pipe as well as the first valve, the second valve, the third valve and the fourth valve which are arranged on the pump body.

An embodiment of the third aspect of the present invention provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, is capable of implementing the steps of any one of the ion concentration adjusting methods according to the first aspect.

In an embodiment of the computer-readable storage medium of the present invention, a computer program is stored thereon, and when the computer program is executed by a processor, the steps of the ion concentration adjusting method in any of the above embodiments are implemented, so that all the beneficial effects of the ion concentration adjusting method in any of the above embodiments are achieved, and are not described herein again.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 shows a schematic flow diagram of an ion concentration adjustment method according to an embodiment of the invention;

FIG. 2 shows a schematic flow diagram of an ion concentration adjustment method according to an embodiment of the invention;

FIG. 3 shows a schematic flow diagram of an ion concentration adjustment method according to an embodiment of the invention;

FIG. 4 shows a schematic flow diagram of an ion concentration adjustment method according to an embodiment of the invention;

FIG. 5 shows a schematic flow diagram of an ion concentration adjustment method according to an embodiment of the invention;

FIG. 6 shows a schematic flow diagram of an ion concentration adjustment method according to an embodiment of the invention;

FIG. 7 shows a schematic flow diagram of an ion concentration adjustment method according to an embodiment of the invention;

FIG. 8 is a block diagram schematically illustrating the structure of a water treatment system according to an embodiment of the present invention;

FIG. 9 shows a schematic structural diagram of a water treatment system according to an embodiment of the present invention;

FIG. 10 shows a schematic structural diagram of a water treatment system according to an embodiment of the present invention;

FIG. 11 shows a schematic structural diagram of a water treatment system according to an embodiment of the present invention;

FIG. 12 shows a schematic structural diagram of a water treatment system according to an embodiment of the present invention;

FIG. 13 shows a schematic structural diagram of a water treatment system according to an embodiment of the present invention;

FIG. 14 shows a schematic block diagram of a water treatment system according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 14 is:

100: a water treatment system; 102: stacking the films; 104: an ion exchange membrane; 106: a fresh water chamber; 108: a concentrated water chamber; 110: an electrode group; 112: an electrode; 114: a voltage regulating device; 116: a tubing assembly; 118: a water inlet pipe group; 120: a water outlet pipe; 122: a waste pipe; 124: a first valve; 126: a second valve; 127: a water tank; 128: a raw water tank; 130: a wastewater tank; 154: a water joint is used; 132: a water diversion pipe; 134: a water return pipe; 136: a third valve; 138: a fourth valve; 140: a main water inlet pipe; 142: a water inlet branch pipe; 144: a pump body; 146: a flow valve; 148: a front filter element; 150: a post-positioned filter element; 152: a heating device; 156: a first controller; 158: a second controller; 160: a timer; 170: a processor; 180: a memory.

Detailed Description

In order that the above objects, features and advantages of the embodiments of the present invention can be more clearly understood, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, embodiments of the present invention may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited to the specific embodiments disclosed below.

Some embodiments according to the invention are described below with reference to fig. 1 to 14.

Example one

As shown in fig. 1, the present embodiment provides an ion concentration adjusting method for a water treatment system, the water treatment system includes a membrane stack and two electrodes disposed on two sides of the membrane stack, the membrane stack includes a concentrated water chamber and a dilute water chamber, the ion concentration adjusting method includes:

step S102: acquiring a concentration adjusting instruction;

step S104: determining the target ion concentration of the liquid in the fresh water chamber according to the concentration regulation instruction;

step S106: determining a membrane stack voltage difference value according to the target ion concentration;

step S108: and controlling the difference of the voltages applied to the two electrodes to be the voltage difference of the membrane stack until the ion concentration in the fresh water chamber is the target ion concentration.

In an embodiment of the ion concentration adjusting method provided by the first aspect of the present invention, the water treatment system includes a membrane stack, the membrane stack includes a concentrated water chamber and a dilute water chamber, and the ion concentrations of the dilute water chamber and the concentrated water chamber are different. Two electrodes are arranged on two sides of the membrane stack. The ion concentration adjusting method of the reclaimed water treatment system is mainly used for adjusting the ion concentration of fluid in the fresh water chamber. Therefore, the water treatment system first acquires a concentration adjustment instruction. The concentration adjustment instruction includes a target ion concentration of the dilute chamber. And the water inlet treatment system determines a corresponding membrane stack voltage difference value according to the target ion concentration, and applies the membrane stack voltage difference value to the electrodes on the two sides of the membrane stack. The voltage is applied to the two electrodes, an electric field which covers each fresh water chamber and each concentrated water chamber is formed in the membrane stack, negative and positive ions in the fluid can be driven to move under the action of the electric field, and the fluid passes through the ion exchange membrane and enters the adjacent treatment chambers, so that the ion concentrations of the fluid in the fresh water chamber and the concentrated water chamber are different. Since the ions in the fluid are driven by the electric field to move, it can be understood that the larger the voltages applied to the two electrodes, the more violent the movement of the ions, and the larger the difference between the ion concentrations of the fluids in the adjacent processing chambers. When the ion concentrations of the fluids in the dilute and concentrate chambers are in equilibrium with the voltage applied between the two electrodes, the ion concentrations do not change. Therefore, the ion concentration in the fresh water chamber is adjusted by adjusting the voltage values applied to the two electrodes, so that the ion concentration of the fluid in the fresh water chamber reaches the ion concentration value corresponding to the applied voltage, the ion concentration in the fresh water chamber in the water treatment system can be correspondingly adjusted according to the setting of a user, and the water use requirements of the user for different ion concentrations are met.

Example two

As shown in fig. 2, the present embodiment provides an ion concentration adjusting method for a water treatment system, the water treatment system includes a membrane stack and two electrodes disposed on two sides of the membrane stack, the membrane stack includes a concentrated water chamber and a dilute water chamber, the ion concentration adjusting method includes:

step S202: acquiring a concentration adjusting instruction;

step S204: determining the target ion concentration of the liquid in the fresh water chamber according to the concentration regulation instruction;

step S206: determining a membrane stack voltage difference value according to the target ion concentration;

step S208: controlling the difference of the voltages applied to the two electrodes as the voltage difference of the membrane stack until the ion concentration in the fresh water chamber is the target ion concentration;

the method comprises the following steps: s210: and controlling the difference of the voltages applied to the two electrodes to be the holding voltage difference.

The ion concentration adjusting method of the water treatment system is mainly used for adjusting the ion concentration of fluid in the fresh water chamber. Therefore, the water treatment system first acquires a concentration adjustment instruction. The concentration adjustment instruction includes a target ion concentration of the dilute chamber. And the water inlet treatment system determines a corresponding membrane stack voltage difference value according to the target ion concentration, and applies the membrane stack voltage difference value to the electrodes on the two sides of the membrane stack. The voltage is applied to the two electrodes, an electric field which covers each fresh water chamber and each concentrated water chamber is formed in the membrane stack, negative and positive ions in the fluid can be driven to move under the action of the electric field, and the fluid passes through the ion exchange membrane and enters the adjacent treatment chambers, so that the ion concentrations of the fluid in the fresh water chamber and the concentrated water chamber are different. Since the ions in the fluid are driven by the electric field to move, it can be understood that the larger the voltages applied to the two electrodes, the more violent the movement of the ions, and the larger the difference between the ion concentrations of the fluids in the adjacent processing chambers. When the ion concentrations of the fluids in the dilute and concentrate chambers are in equilibrium with the voltage applied between the two electrodes, the ion concentrations do not change. Therefore, the ion concentration in the fresh water chamber is adjusted by adjusting the voltage values applied to the two electrodes, so that the ion concentration of the fluid in the fresh water chamber reaches the ion concentration value corresponding to the applied voltage, the ion concentration in the fresh water chamber in the water treatment system can be correspondingly adjusted according to the setting of a user, and the water use requirements of the user for different ion concentrations are met.

In the membrane stack, in order to move the ions in the fluid with lower ion concentration in the dilute water chamber to the fluid with higher ion concentration in the concentrated water chamber, a voltage difference is required to be applied to the electrodes on the two sides of the membrane stack to drive the ions to move to the fluid with higher ion concentration. It will be appreciated that if the voltage difference is removed at this point, the ions in the fluid will necessarily tend to regain uniformity in concentration, eventually bringing the fluid concentrations back into agreement in both chambers. For driving ions to move, the ion concentration difference in the fresh water chamber and the concentrated water chamber is increased, the concentration difference of the two chambers is maintained, and only a pressure maintaining voltage difference value is needed to be applied to the two voltages. Therefore, when the ion concentration in the fresh water chamber reaches the target ion concentration set by the user, the voltage difference is maintained between the two electrodes to maintain the ion concentration in the fresh water chamber.

EXAMPLE III

As shown in fig. 3, the present embodiment provides an ion concentration adjusting method, which is used for a water treatment system, the water treatment system includes a membrane stack and two electrodes disposed on two sides of the membrane stack, the membrane stack includes a concentrated water chamber and a fresh water chamber with different ion concentrations, the water treatment system includes a water tank and a water inlet pipe communicated with the membrane stack and the water tank, the water inlet pipe is provided with a flow valve, and the ion concentration adjusting method includes:

step S302: acquiring a concentration adjusting instruction;

step S304: determining the target ion concentration of the liquid in the fresh water chamber according to the concentration regulation instruction;

step S306: determining a membrane stack voltage difference value according to the target ion concentration;

step S308: determining the target inflow rate of water fed into the fresh water chamber through the water inlet pipe according to the concentration adjusting instruction;

step S310: determining a first water inlet flow and a second water inlet flow which respectively flow into the fresh water chamber and the concentrated water chamber through a flow valve until the first water inlet flow is a target water inlet flow;

step S312: and controlling the difference of the voltages applied to the two electrodes to be the voltage difference of the membrane stack until the ion concentration in the fresh water chamber is the target ion concentration.

In this embodiment, the water treatment system first obtains a concentration adjustment instruction. The concentration adjustment instruction includes a target ion concentration of the dilute chamber. And the water inlet treatment system determines a corresponding membrane stack voltage difference value according to the target ion concentration, and applies the membrane stack voltage difference value to the electrodes on the two sides of the membrane stack. The voltage is applied to the two electrodes, an electric field which covers each fresh water chamber and each concentrated water chamber is formed in the membrane stack, negative and positive ions in the fluid can be driven to move under the action of the electric field, and the fluid passes through the ion exchange membrane and enters the adjacent treatment chambers, so that the ion concentrations of the fluid in the fresh water chamber and the concentrated water chamber are different. Since the ions in the fluid are driven by the electric field to move, it can be understood that the larger the voltages applied to the two electrodes, the more violent the movement of the ions, and the larger the difference between the ion concentrations of the fluids in the adjacent processing chambers. When the ion concentrations of the fluids in the dilute and concentrate chambers are in equilibrium with the voltage applied between the two electrodes, the ion concentrations do not change. Therefore, the ion concentration in the fresh water chamber is adjusted by adjusting the voltage values applied to the two electrodes, so that the ion concentration of the fluid in the fresh water chamber reaches the ion concentration value corresponding to the applied voltage, the ion concentration in the fresh water chamber in the water treatment system can be correspondingly adjusted according to the setting of a user, and the water use requirements of the user for different ion concentrations are met.

The concentration regulation instruction obtained by the water treatment system also comprises the target inflow rate of the fresh water chamber. After the water treatment system obtains the target water inflow rate, the flow valve is controlled to adjust the first water inflow rate and the second water inflow rate flowing into the fresh water chamber and the concentrated water chamber, and finally the first water inflow rate is the target water inflow rate. The first water inlet flow is the water inlet flow flowing into the fresh water chamber, and the second water inlet flow is the water inlet flow flowing into the concentrated water chamber. It will be appreciated that the greater the target feed water flow, the closer the ion concentration of the fluid in the fresh water chamber will be to that of the feed water and, therefore, the effect on the stack voltage difference. The corresponding membrane stack voltage difference value can be determined according to different target ion concentrations and target inflow rates, so that the ion concentration in the fresh water chamber is the target ion concentration under the condition that the water enters the fresh water chamber from the water inlet pipe.

It should be noted that the inlet pipe is connected to the membrane stack, and the inlet water flows into the fresh water chamber and the concentrated water chamber respectively. Because the inlet water in the inlet pipe does not flow to the places outside the fresh water chamber and the concentrated water chamber, the first inlet water flow can be controlled to be the target inlet water flow no matter the flow valve controls the first inlet water flow or the second inlet water flow. Of course, the inlet pipe can be divided into two branch inlet pipes before entering the membrane stack, the two branch inlet pipes are respectively connected with the fresh water chamber and the concentrated water chamber, the inlet pipe connected with the fresh water chamber or the concentrated water chamber is provided with a flow valve, or the two branch inlet pipes are provided with flow valves, so that the control of the first inlet flow can be conveniently realized.

Example four

As shown in fig. 4, the present embodiment provides an ion concentration adjusting method, which is used for a water treatment system, the water treatment system includes a membrane stack and two electrodes disposed on two sides of the membrane stack, the membrane stack includes a concentrated water chamber and a fresh water chamber having different ion concentrations, the water treatment system includes a water tank, a water inlet pipe communicates the water tank and the membrane stack and is connected with the fresh water chamber and the concentrated water chamber, and water in the water tank can enter the membrane stack through the water inlet pipe. The flow valve is arranged on the water inlet pipe and can control the inflow rate.

The ion concentration adjusting method comprises the following steps:

step S402: acquiring a concentration adjusting instruction;

step S404: determining the target ion concentration of the liquid in the fresh water chamber according to the concentration regulation instruction;

step S406: determining a membrane stack voltage difference value according to the target ion concentration;

step S408: determining the target inflow rate of water fed into the fresh water chamber through the water inlet pipe according to the concentration adjusting instruction;

step S410: determining a first water inlet flow and a second water inlet flow which respectively flow into the fresh water chamber and the concentrated water chamber through a flow valve until the first water inlet flow is a target water inlet flow;

step S412: obtaining the concentration of fresh water ions in the fluid in the fresh water chamber;

step S414: determining the size relation between the concentration of the fresh water ions and the concentration of the target ions;

step S416: if the concentration of the fresh water ions is less than the target ion concentration, the concentration of the fresh water ions is increased according to a voltage disconnection rule until the concentration of the fresh water ions is the target ion concentration;

step S418: and if the concentration of the fresh water ions is greater than the target ion concentration, reducing the concentration of the fresh water ions according to a static pressurization rule until the concentration of the fresh water ions is the target ion concentration.

Through be equipped with the pump body on the inlet tube, the pump body can increase the water pressure of the interior fluid of inlet tube to guarantee the correct flow direction of fluid in the pipeline under the effect of water pressure. If the pump body is not started, the fluid in the pipeline of the water treatment system cannot flow and keeps static. In addition, the water treatment system also comprises a shunt pipe, and two ends of the shunt pipe are respectively communicated with the water outlet pipe and the waste water pipe, specifically, one end of the shunt pipe is connected to the position in front of the first valve in the water outlet pipe, namely the pipe section between the first valve and the membrane stack, and the other end of the shunt pipe is connected to the position in front of the second valve in the waste water pipe, namely the pipe section between the second valve and the membrane stack, so that the fluid in the water outlet pipe can be guided into the waste water pipe through the shunt pipe. And two ends of the water return pipe are respectively communicated with the waste water pipe and the water tank, so that the fluid in the fresh water chamber and the concentrated water chamber in the membrane stack can be uniformly discharged back to the water tank. And when the third valve is closed, all the fluid with low ion concentration flows out from the water outlet pipe. In addition, a fourth valve is arranged on the water return pipe, when the fourth valve is opened, the fluid in the waste water pipe can flow into the water tank from the water return pipe, and when the fourth valve is closed, the fluid in the waste water pipe cannot flow into the water tank from the water return pipe.

And the concentration adjusting instruction obtained by the water treatment system comprises target ion concentration and target inflow water flow. And then, the water treatment system acquires the fresh water ion concentration of the fluid in the fresh water chamber, compares the fresh water ion concentration with the target ion concentration, and determines the size relation between the fresh water ion concentration and the target ion concentration. It will be appreciated that there are currently possible situations in which: the ion concentration of the fresh water is smaller than the target ion concentration, which indicates that the ion concentration in the fresh water chamber is lower than the target ion concentration, the ion concentration of the fresh water should be increased by the water treatment system, and the corresponding treatment rule is a voltage disconnection rule. Or the ion concentration of the fresh water is greater than the target ion concentration, the ion concentration of the fresh water should be reduced by the water treatment system, and the corresponding treatment rule is a static pressurization rule. Finally, no matter how the magnitude relation of the ion concentration of the fresh water and the target ion concentration is, the water treatment system can ensure that the ion concentration of the outlet water reaches the target ion concentration.

Further, as shown in fig. 5, for step S416: and if the concentration of the fresh water ions is less than the target ion concentration, increasing the concentration of the fresh water ions according to a voltage disconnection rule until the concentration of the fresh water ions is the target ion concentration. The step of increasing the concentration of the fresh water ions according to the disconnection voltage rule comprises the following substeps: step S4162: determining third adjusting time and fourth adjusting time according to the magnitude relation between the concentration of the fresh water ions and the concentration of the target ions and the target water inlet flow; step S4164: controlling the pump body to be kept closed for a third adjusting time, and controlling the difference of the voltages applied to the two electrodes to be 0 at the third adjusting time; step S4166: controlling the difference of the voltages applied to the two electrodes as the difference of the membrane stack voltages; step S4168: controlling the pump body to start, determining the starting time of the pump body, closing the first valve and the second valve, and opening the third valve and the fourth valve; step S4170: and when the starting time exceeds a fourth adjusting time, opening the first valve and the second valve, and closing the third valve and the fourth valve.

When adjusting the ion concentration in the fresh water chamber according to the disconnection voltage rule, firstly, the ion concentration of the fresh water and the target ion concentration are judged, and specifically, when the ion concentration of the fresh water is smaller than the target ion concentration, the water treatment system determines third adjusting time and fourth adjusting time according to the size relation between the ion concentration of the fresh water and the target ion concentration and the target inflow water flow rate, so as to provide time support for a subsequent control pump body and different valve bodies.

Further, as shown in fig. 6, the step of reducing the fresh water ion concentration according to the static pressurization rule in step S418 includes the following sub-steps: step S4182: adjusting the difference of the voltages of the two electrodes according to the difference of the voltages of the membrane stack; step S4184: determining first adjusting time and second adjusting time according to the magnitude relation between the concentration of the fresh water ions and the concentration of the target ions and the target water inlet flow; step S4186: controlling the pump body to keep closed for a first adjusting time; step S4188: controlling the pump body to start, determining the starting time of the pump body, closing the first valve and the second valve, and opening the third valve and the fourth valve; step S4190: and when the starting time exceeds the second adjusting time, the first valve and the second valve are opened, and the third valve and the fourth valve are closed.

When adjusting the ion concentration in the fresh water chamber according to the static pressurization rule, firstly, the ion concentration of the fresh water and the target ion concentration are judged, specifically, when the ion concentration of the fresh water is greater than the target ion concentration, the voltage difference value of the electrodes on two sides of the membrane stack is adjusted to be the membrane stack voltage difference value by the water treatment system, and according to the size relation between the ion concentration of the fresh water and the target ion concentration and the target inflow water flow, the first adjusting time and the second adjusting time can be determined, so that time support is provided for a follow-up control pump body and different valve bodies.

EXAMPLE five

As shown in fig. 7, this embodiment further provides an ion concentration adjusting method, which is used in a water treatment system, where the water treatment system includes a membrane stack and two electrodes disposed at two sides of the membrane stack, the membrane stack includes a concentrated water chamber and a fresh water chamber having different ion concentrations, and a water outlet pipe of the fresh water chamber is provided with a heating device, which can heat fluid discharged from the water outlet pipe. The ion concentration adjusting method comprises the following steps:

step S502: acquiring a concentration adjusting instruction;

step S504: determining the target ion concentration of the liquid in the fresh water chamber according to the concentration regulation instruction;

step S506: acquiring the outlet water temperature of the outlet pipe;

step S508: determining a target temperature value of the heating device according to the concentration adjusting instruction;

step S510: controlling a heating device to heat the fluid in the water outlet pipe until the water outlet temperature is a target temperature value;

step S512: determining a membrane stack voltage difference value according to the target ion concentration;

step S514: and controlling the difference of the voltages applied to the two electrodes to be the voltage difference of the membrane stack until the ion concentration in the fresh water chamber is the target ion concentration.

The water outlet pipe is provided with a heating device which can heat the fluid discharged by the water outlet pipe. Before the membrane stack voltage difference value is determined, a target temperature value is obtained according to a concentration adjusting instruction. The fluid in the water outlet pipe can be heated by controlling the heating device, specifically, the fluid is heated to a target temperature value, so that the water outlet temperature reaches the target temperature value.

It can be understood that the heating device can adjust the heating power according to the difference value between the target temperature value and the current effluent temperature, so that the effluent temperature can reach the target temperature value quickly.

The target temperature value corresponds to the target ion concentration and the target inflow water flow, and different application scenes can be provided for the water treatment system conveniently.

EXAMPLE six

The invention also provides a computer readable storage medium, and the computer program can realize the ion concentration adjusting method when being executed by the processor, and the ion concentration of the outlet water is the target ion concentration by obtaining the concentration adjusting instruction and determining the voltage difference value of the membrane stack and the first inlet water flow.

EXAMPLE seven

As shown in fig. 8, the present embodiment provides a water treatment system 100, which includes a processor 170 and a memory 180, wherein the memory 180 stores a computer program, and the computer program can implement the steps of the ion concentration adjusting method provided in any one of the above embodiments when executed by the processor 170.

Example eight

As shown in fig. 9, the present embodiment provides a water treatment system 100 including: the membrane stack 102 comprises a fresh water chamber 106, a concentrated water chamber 108 and an ion exchange membrane 104, wherein the fresh water chamber 106 and the concentrated water chamber 108 are adjacently arranged, when the number of the treatment chambers is multiple, the fresh water chamber 106 and the concentrated water chamber 108 are arranged in a crossed manner, so that at least one side of each fresh water chamber 106 is adjacent to the concentrated water chamber 108, and the adjacent fresh water chamber 106 and the concentrated water chamber 108 are separated by the ion exchange membrane 104. In addition, the two electrodes 112 on both sides of the membrane stack 102 have different polarities, and the two electrodes 112 are typically an anode electrode 112 and a cathode electrode 112, respectively. The application of voltage to the two electrodes 112 forms an electric field in the membrane stack 102 to cover each of the dilute water chamber 106 and the concentrated water chamber 108, and under the action of the electric field, the negative and positive ions in the fluid can be driven to move, and pass through the ion exchange membrane 104 to enter the adjacent treatment chambers, so that the ion concentrations of the fluids in the dilute water chamber 106 and the concentrated water chamber 108 are different. Since the ions in the fluid are driven by the electric field to move, it can be understood that the larger the voltage applied to the two electrodes 112, the more the ions move, and the larger the difference between the ion concentrations of the fluids in the adjacent processing chambers. When the ion concentration of the fluid in the dilute chamber 106 and the concentrate chamber 108 reaches equilibrium with the voltage applied between the two electrodes 112, the ion concentration does not change. Therefore, the ion concentration in the dilute water chamber 106 and the concentrated water chamber 108 can be adjusted by adjusting the voltage values applied to the two electrodes 112, so that the ion concentration of the fluid in the treatment chamber can be adjusted to an ion concentration value corresponding to the applied voltage. It is emphasized that by adjusting the voltage to change the ion concentration of the fluid in the membrane stack 102, the ion concentration of the outwardly discharged fluid can be adjusted, so that the water treatment system 100 can meet different water requirements without replacing the ion exchange membrane 104 in the membrane stack 102.

Further, the number of the dilute chambers 106 and the concentrate chambers 108 may be plural, forming a series of water paths. The series waterway can provide multi-stage purification of the liquid in the membrane stack 102, and different water requirements of different users can be satisfied simultaneously by using fluids with different ion concentrations in different treatment chambers.

Further, the fluid flows from the inlet end to the outlet end of the membrane stack 102, i.e., through the dilute chamber 106 and the concentrate chamber 108, and during the flow of the fluid inside the membrane stack 102, the fluid is subjected to the electric field generated by the electrodes 112 located on both sides of the membrane stack 102, thereby changing the ion concentration of the fluid in different processing chambers. Therefore, for the dynamic flow of the fluid in the membrane stack 102, the ion concentration thereof will be gradually changed, and generally, on the basis of controlling the voltage on the two electrodes 112 to be constant, the flow rate is higher, the ion in the fluid passes through the ion exchange membrane 104 to a lower extent, that is, the effect of changing the ion concentration is worse, whereas if the flow rate is lower, the ion in the fluid passes through the ion exchange membrane 104 to a higher extent, that is, the effect of changing the ion concentration is better.

Example nine

In addition to the eighth embodiment, further defining the water treatment system 100, as shown in fig. 10, the water treatment system 100 further includes a piping assembly 116, a water tank 127 including a raw water tank 128 and a waste water tank 130, and the water treatment system 100 further includes a water using connector 154. The piping assembly 116 includes a water inlet pipe set 118, a water outlet pipe 120, and a waste pipe 122. A first valve 124 is provided on the outlet pipe 120 and a second valve 126 is provided on the waste pipe 122.

One end of the water inlet pipe set 118 is connected with the raw water tank 128, the other end is connected with the fresh water chamber 106 and the concentrated water chamber 108 of the membrane stack 102, and the water inlet pipe set 118 sends water into the fresh water chamber 106 and the concentrated water chamber 108 respectively. Because the inlet tube set 118 is in direct communication with the dilute and concentrate

chambers

106, 108, the ion concentration of the fluid fed into the dilute and concentrate

chambers

106, 108 is the same. The fluid flowing into the membrane stack 102 has a different ion concentration when flowing out of the dilute chamber 106 and the concentrate chamber 108 due to the electric field. Wherein the outlet tube 120 is in communication with the lower fluid ion concentration of the dilute chamber 106 and the concentrate chamber 108, and conversely, the waste tube 122 is in communication with the higher fluid ion concentration of the dilute chamber 106 and the concentrate chamber 108. The user can take or discard the fluid discharged by different pipes according to the requirement. A first valve 124 is disposed on the outlet pipe 120, and when the first valve 124 is closed, the fluid in the outlet pipe 120 cannot be discharged from the outlet pipe 120. A second valve 126 is provided in waste 122, and when second valve 126 is closed, fluid in waste 122 cannot be discharged from waste 122. It is clear that if the first valve 124 and the second valve 126 are both closed, the stack 102 cannot discharge fluid, nor can the inlet line feed fluid into the stack 102. When the first valve 124 is opened, the fluid in the processing chamber with the lower ionic concentration of the fluid in the dilute chamber 106 and the concentrated chamber 108 will eventually exit the water usage joint 154 through the outlet tube 120.

The raw water tank 128 holds the fluid to be treated and feeds the fresh water compartment 106 and the concentrate compartment 108 through inlet conduits. The fluid with the higher ion concentration in the dilute chamber 106 and the concentrate chamber 108 will drain into the waste water tank 130. A raw water tank 128 and a waste water tank 130 are provided to facilitate collection of the fluid fed to the membrane stack 102 and the fluid with a higher concentration of ions discharged from the membrane stack 102. For fluids containing harmful ions or that may cause environmental pollution, centralized treatment may protect the environment.

Furthermore, the raw water tank 128 and the waste water tank 130 are arranged, so that the whole process of sealing the fluid is facilitated, the fluid is further protected from environmental pollution, and the water treatment system 100 has obvious application value for some water treatment systems 100 used for scientific research.

Example ten

As shown in fig. 9 to 11, the present embodiment provides a water treatment system 100 including: the membrane stack 102 comprises a fresh water chamber 106, a concentrated water chamber 108 and an ion exchange membrane 104, wherein the fresh water chamber 106 and the concentrated water chamber 108 are adjacently arranged, when the number of the treatment chambers is multiple, the fresh water chamber 106 and the concentrated water chamber 108 are arranged in a crossed manner, so that at least one side of each fresh water chamber 106 is adjacent to the concentrated water chamber 108, and the adjacent fresh water chamber 106 and the concentrated water chamber 108 are separated by the ion exchange membrane 104. In addition, the two electrodes 112 on both sides of the membrane stack 102 have different polarities, and the two electrodes 112 are typically an anode electrode 112 and a cathode electrode 112, respectively. The application of voltage to the two electrodes 112 forms an electric field in the membrane stack 102 to cover each of the dilute water chamber 106 and the concentrated water chamber 108, and under the action of the electric field, the negative and positive ions in the fluid can be driven to move, and pass through the ion exchange membrane 104 to enter the adjacent treatment chambers, so that the ion concentrations of the fluids in the dilute water chamber 106 and the concentrated water chamber 108 are different. Since the ions in the fluid are driven by the electric field to move, it can be understood that the larger the voltage applied to the two electrodes 112, the more the ions move, and the larger the difference between the ion concentrations of the fluids in the adjacent processing chambers. When the ion concentration of the fluid in the dilute chamber 106 and the concentrate chamber 108 reaches equilibrium with the voltage applied between the two electrodes 112, the ion concentration does not change. Therefore, the ion concentration in the dilute water chamber 106 and the concentrated water chamber 108 can be adjusted by adjusting the voltage values applied to the two electrodes 112, so that the ion concentration of the fluid in the treatment chamber can be adjusted to an ion concentration value corresponding to the applied voltage. It is emphasized that by adjusting the voltage to change the ion concentration of the fluid in the membrane stack 102, the ion concentration of the outwardly discharged fluid can be adjusted, so that the water treatment system 100 can meet different water requirements without replacing the ion exchange membrane 104 in the membrane stack 102.

Further, the water treatment system 100 includes a plumbing assembly 116, a raw water tank 128 and a waste water tank 130 and a water usage fitting 154. The piping assembly 116 includes a water inlet pipe set 118, a water outlet pipe 120, and a waste pipe 122. A first valve 124 is provided on the outlet pipe 120 and a second valve 126 is provided on the waste pipe 122.

chambers

The raw water tank 128 holds a fluid to be treated and feeds the membrane stack 102 through a feed line. The fluid from the stack 102, which has a higher concentration of ions, is discharged into the waste water tank 130. A raw water tank 128 and a waste water tank 130 are provided to facilitate collection of the fluid fed to the membrane modules and the fluid having a higher ionic concentration discharged from the membrane modules. For fluids containing harmful ions or that may cause environmental pollution, centralized treatment may protect the environment.

Further, the water treatment system 100 further includes a water diversion pipe 132 and a water return pipe 134, wherein one end of the water diversion pipe 132 is communicated with the water outlet pipe 120 connected between the first valve 124 and the membrane stack 102, and the other end is communicated with the waste water pipe 122 connected between the second valve 126 and the membrane stack 102.

One end of the return pipe 134 is connected to the section of the waste pipe 122 between the second valve 126 and the membrane stack 102, and the other end is connected to the raw water tank 128, and the branch pipe 132 can lead the fluid in the water outlet pipe 120 to the waste pipe 122 and the return pipe 134. A return line 134 may direct the flow from waste 122 to raw water tank 128. A third valve 136 is provided on the knock out pipe 132, and when the third valve 136 is opened, the fluid having a low ion concentration can flow into the waste pipe 122 through the knock out pipe 132, and when the third valve 136 is closed, all the fluid having a low ion concentration flows out from the outlet pipe 120. A fourth valve 138 is provided on the return pipe 134, and when the fourth valve 138 is opened, the fluid in the waste pipe 122 can flow from the return pipe 134 into the raw water tank 128, and when the fourth valve 138 is closed, the fluid in the waste pipe 122 cannot flow from the return pipe 134 into the raw water tank 128.

Further, the first valve 124, the second valve 126, the third valve 136, and the fourth valve 138 may all be closed, fluid in the membrane stack 102 no longer flows out, and obviously fluid cannot flow into the membrane stack 102, and fluid in the dilute chamber 106 and the concentrate chamber 108 only flows into each other, without a tendency to flow from the inlet tube to the outlet tube 120. In this manner, the electric field formed by the electrodes 112 on both sides of the membrane stack 102 has the most significant influence on the fluid ions, and the ion concentration of the fluid in the dilute chamber 106 and the concentrated chamber 108 approaches the set ion concentration target value relatively quickly.

It will be appreciated that closing the four valves simultaneously also prevents fluid from leaking out of the stack 102. Closing the four valves ensures that fluid does not flow through the entire system's plumbing assembly 116, especially when the user temporarily does not require the water treatment system 100 to discharge fluid.

EXAMPLE eleven

The water treatment system 100 is further defined on the basis of the tenth embodiment, and as shown in fig. 12, the water inlet pipe group 118 is divided into a water inlet main pipe 140 and a plurality of water inlet branch pipes 142. The fluid fed to the stack 102 from the raw water tank 128 is first fed to the main water inlet pipe 140. And then into a plurality of inlet legs 142.

The water inlet branch pipes 142 can separate the water inlet of the water inlet pipe and the fresh water chamber 106 from the water inlet of the water inlet pipe and the water inlet of the concentrated water chamber 108, so that the fluid in the fresh water chamber 106 and the fluid in the concentrated water chamber 108 are prevented from being mixed at the water inlet, and the effect of treating the concentration of the fluid is prevented from being influenced.

The water inlet main pipe 140 is provided with a pump body 144, and the pump body 144 can increase the water pressure of the fluid in the water inlet pipe.

Generally speaking, the water circuit of the water treatment system 100 requires a water pressure to be maintained in the conduit assembly 116 to ensure a proper flow of fluid in the conduit assembly 116.

Further, the pump body 144 may stop providing water pressure to the waterway of the water treatment system 100 when needed, and the fluid in the water treatment system 100 may stop flowing because of the absence of water pressure.

A flow valve 146 is provided in each of the inlet manifolds 142 connecting the dilute chambers 106 and the concentrate chambers 108, with the flow valve 146 controlling the flow of fluid into the dilute chambers 106 and the concentrate chambers 108.

It will be appreciated that the greater the flow rate, the faster the fluid within the stack 102 is replaced and the smaller the difference in ion concentration between the dilute chamber 106 and the concentrate chamber 108. The flow valve 146 allows control of the flow rate into the membrane stack 102, which has a direct effect on adjusting the ion concentration in the dilute 106 and concentrate 108 chambers.

Further, the flow valve 146 is electrically connected to a first controller 156, and the first controller 156 may set the flow value of the flow valve 146. When the first controller 156 sets the ion concentration of the dilute chamber 106 or the concentrate chamber 108, the adjustment of the ion concentration of the dilute chamber 106 or the concentrate chamber 108 can be accomplished by setting the flow rate value of the flow valve 146 in conjunction with the voltage adjustment device 114 while setting the voltage of the two electrodes 112 of the membrane stack 102.

Further, the flow valve 146 may also measure the current flow value to enable closed loop control of the flow valve 146 by the first controller 156.

Example twelve

In addition to the eleventh embodiment, further defining the water treatment system 100, as shown in fig. 13, the inlet main 140 is provided with a pre-filter 148, and the pre-filter 148 can filter out insoluble impurities contained in the fluid flowing out of the raw water tank 128. Such as silt, metal filings, etc.

The outlet pipe 120 is provided with a post-filter 150, and the post-filter 150 can improve the quality of the fluid discharged from the outlet pipe 120. When the water treatment system is used to provide direct drinking water to a user, the post-filter 150 can improve water quality, and particularly can remove odors from the water. The outlet pipe 120 is provided with a heating device 152, and the heating device 152 can heat the fluid in the outlet pipe 120.

Further, the user may set the temperature of the outlet water in the heating device 152, and when the fluid is discharged from the water use connector 154, the temperature of the discharged fluid can reach the temperature set by the user.

EXAMPLE thirteen

In a twelfth embodiment, further defining the water treatment system 100, as shown in fig. 14, the water treatment system 100 includes a first controller 156, and the first controller 156 can control the voltage regulator 114 to regulate the voltage between the two electrodes 112 of the membrane stack 102, so as to regulate the ion concentration of the fluid in the dilute water chamber 106 and the concentrated water chamber 108. Compared with the method that two ends of a fixed power supply are directly connected to the two electrodes 112, the voltage of the two electrodes 112 is adjusted in a control mode of the first controller 156, and the voltage is adjusted more conveniently.

Further, the water treatment system 100 includes a second controller 158, and the second controller 158 controls the first valve 124, the second valve 126, the third valve 136, and the fourth valve 138 in two ways:

the first way is to open the first valve 124 and the second valve 126 simultaneously and close the third valve 136 and the fourth valve 138. At this time, the low ion concentration fluid from the membrane stack 102 flows out of the water outlet pipe 120, and the high ion concentration fluid flows from the waste water pipe 122 to the waste water tank 130.

The second way is to close the first valve 124 and the second valve 126 and open the third valve 136 and the fourth valve 138 simultaneously. At this time, the fluid with low ion concentration flowing out of water outlet pipe 120 enters waste water pipe 122 from water knockout pipe 132. Since the second valve 126 is closed, the fluid with a low ion concentration cannot flow into the waste water tank 130, and flows into the raw water tank 128 from the return pipe 134. Since the second valve 126 is also closed at this time, the fluid having a high ion concentration flowing out of the membrane stack 102 also flows into the raw water tank 128 through the return pipe 134.

The second way is to pass the fluid flowing into the membrane stack 102 from the return pipe 134 into the raw water tank 128. In this manner, the ion concentration of the fluid exiting the outlet pipe 120 or waste 122 may not be consistent with the set target for situations where the water treatment system 100 is operating erratically, and the desired ion concentration of the fluid may not be available if the water exiting the membrane stack 102 is directed to exit the outlet pipe 120 or flow into the waste tank 130. After a period of stable operation of the water treatment system 100, the second controller 158 is switched to the first control mode to ensure that the fluid exiting the membrane module meets the predetermined ion concentration.

Further, the second mode can also realize the flushing of the membrane stack 102 and the water outlet pipe 120. When the system starts to operate, or the set target ion concentration of the fluid is changed, the membrane stack 102 and the water outlet pipe 120 are washed, old fluid reserved in the membrane stack 102 and the water outlet pipe 120 can be washed away, and the fluid concentration of the outlet water can be ensured after the washing.

Here, the return pipe 134 may be connected to the raw water tank 128, and the fluid flowing out of the return pipe 134 may be directly discharged to the outside of the water treatment system 100. But this would result in a waste of fluid. If the fluid contains harmful components, environmental pollution may also be caused.

Further, the water treatment system 100 further includes a timer 160, and the second controller 158 can control the opening time of the first valve 124, the second valve 126, the third valve 136 and the fourth valve 138 according to the time provided by the timer 160.

The timer 160 adjusts the time during which the first valve 124, the second valve 126, the third valve 136, and the fourth valve 138 are all closed, thereby adjusting the degree to which the fluid ion concentration in the dilute chamber 106 and the concentrated chamber 108 approaches the set target ion concentration. It will be appreciated that the greater the difference in fluid ion concentration between the dilute chamber 106 and the concentrate chamber 108 is set, the longer it will take to approach the target ion concentration.

The timer 160 can adjust the level of flushing of the membrane stack 102 and the outlet pipe 120 and waste 122 by adjusting the time that the first and

second valves

124, 126 are closed and the third and

fourth valves

136, 138 are open.

Further, the timer 160 is electrically connected to the pump body 144, and can control the opening and closing of the pump body 144, so that the pump body 144 can be stopped for a period of time and then opened again under the control of the timer; or may be turned on for a period of time and then turned off.

Example fourteen

This embodiment provides a water purifier (which includes a water treatment system 100 as shown in fig. 14) for providing purified water to a user, wherein the ion concentration of the purified water meets the ion concentration requirement required by the user.

The purifier includes following device: the membrane stack 102, two electrodes 112, a voltage regulating device 114, a water inlet pipe group 118, a water outlet pipe 120, a waste water pipe 122, a raw water tank 128, a waste water tank 130, a water pump, a flow valve 146, a heating module (i.e. a heating device 152) and a water outlet joint.

The membrane stack 102 includes: a dilute chamber 106, a concentrate chamber 108, and a plurality of membrane stacks 102. The two electrodes 112 on either side of the membrane stack 102 are of different polarity, typically the two electrodes 112 being an anode electrode 112 and a cathode electrode 112, respectively. When voltage is applied to the two electrodes 112, an electric field is formed between each of the dilute water chamber 106 and the concentrated water chamber 108 in the membrane stack 102, and anions and cations inside the fluid are driven to move under the action of the electric field, pass through the ion exchange membrane 104, and enter the adjacent treatment chambers, so that the ion concentrations of the fluids in the dilute water chamber 106 and the concentrated water chamber 108 are different. Since the ions in the fluid are driven by the electric field to move, it can be understood that the larger the voltage applied to the two electrodes 112, the more the ions move, and the larger the difference between the ion concentrations of the fluids in the adjacent processing chambers. When the ion concentration of the fluid in the dilute chamber 106 and the concentrate chamber 108 reaches equilibrium with the voltage applied between the two electrodes 112, the ion concentration does not change. Therefore, by adjusting the voltage applied to the electrode group 110, the ion concentration in the dilute water chamber 106 and the concentrated water chamber 108 can be adjusted so that the ion concentration of the fluid in the treatment chamber becomes an ion concentration value corresponding to the voltage applied to the electrode group 110.

It will be appreciated that the ions are driven by the electric field, and the longer the electric field is maintained, the closer the ion concentration between the dilute chamber 106 and the concentrated chamber 108 is to the set target ion concentration.

Further, the fluid enters the membrane module structure and then flows into the dilute water chamber 106 and the concentrated water chamber 108, and finally flows out of the dilute water chamber 106 and the concentrated water chamber 108, respectively. Thus, for the membrane module, a change in the ion concentration thereof can also be achieved for dynamically flowing fluids. It is clear that the smaller the instantaneous flow rate into the membrane module structure, the more pronounced the effect of the change in ion concentration.

The raw water tank 128 contains water to be purified. The water inlet pipe set 118 includes a water inlet main pipe 140 and a water inlet branch pipe 142. One end of the main water inlet pipe 140 is connected to the raw water tank 128, and the other end thereof is divided into two branch water inlet pipes 142 before being connected to the membrane stack 102. One of the inlet manifolds 142 is connected to the dilute chamber 106 and the other is connected to the concentrate chamber 108. The water inlet main pipe 140 is provided with a water pump which can provide water pressure for a water channel of the water purifier. Flow valves 146 are provided in the two inlet manifolds 142 to control the flow of water into the dilute chamber 106 and the concentrate chamber 108.

The water passing through the fresh water chamber 106 flows from the outlet tube 120 to the water usage fitting 154 and eventually out of the water usage fitting 154 for use by a user. Water passing through concentrate chamber 108 is discharged from waste pipe 122 and flows into waste tank 130. The instant heating module is disposed on the outlet tube 120, and water flowing out of the fresh water chamber 106 is heated by the instant heating module before being discharged through the water usage joint 154. Certainly, the user can set the outlet water temperature of the instant heating module, and the instant heating module can adjust the heating power of the instant heating module according to the setting of the user, so that the temperature of the outlet water reaches the set temperature of the user.

The ion concentration of the purified water exiting the dilute chamber 106 is greatly reduced by the action of the electrodes 112. But not absolutely pure water, will still have a certain ion concentration. The ion concentration can be measured by TDS (total dissolved solids). The higher the TDS, the higher the ion concentration, and the lower the TDS, the lower the ion concentration.

In the actual use to the pure water of user, the drinking water of discovering different TDS has certain influence to the taste, for example makes tea and more can taste tea fragrance with low TDS drinking water, and coffee is then better with the drinking water taste of high TDS. Therefore, the purifier needs to be able to reach the TDS value that the user needs to the TDS of the pure water that flows out fast to satisfy the user to the water demand when infusing the drink at present.

To achieve this, a knock out pipe 132, a water return pipe 134, a first valve 124, a second valve 126, a third valve 136, a fourth valve 138, a first controller 156, a second controller 158, and a timer are provided in the water purifier.

A first valve 124 is disposed on the outlet pipe 120, and when the first valve 124 is closed, the fluid in the outlet pipe 120 cannot be discharged from the outlet pipe 120. A second valve 126 is provided in waste 122, and when second valve 126 is closed, fluid in waste 122 cannot be discharged from waste 122.

Wherein, one end of the water diversion pipe 132 is communicated with the water outlet pipe 120 connected between the first valve 124 and the membrane stack 102, and the other end is communicated with the waste water pipe 122 connected between the second valve 126 and the membrane stack 102; one end of the return pipe 134 is connected to the section of the waste pipe 122 between the second valve 126 and the membrane stack 102, and the other end is connected to the raw water tank 128, and the branch pipe 132 can lead the fluid in the water outlet pipe 120 to the waste pipe 122 and the return pipe 134. A return line 134 may direct the flow from waste 122 to raw water tank 128. A third valve 136 is provided on the knock out pipe 132, and when the third valve 136 is opened, the fluid having a low ion concentration can flow into the waste pipe 122 through the knock out pipe 132, and when the third valve 136 is closed, all the fluid having a low ion concentration flows out from the outlet pipe 120. A fourth valve 138 is provided on the return pipe 134, and when the fourth valve 138 is opened, the fluid in the waste pipe 122 can flow from the return pipe 134 into the raw water tank 128, and when the fourth valve 138 is closed, the fluid in the waste pipe 122 cannot flow from the return pipe 134 into the raw water tank 128.

In order to adjust the TDS of the purified water flowing out of the water purifier, the water purifier is also provided with a first controller 156, a second controller 158 and a timer. The first controller 156 may regulate the voltage between the two electrodes 112 through the voltage regulating device 114, and the second controller 158 may control the opening and closing of the first valve 124, the second valve 126, the third valve 136, and the fourth valve 138. The timer may control the on or off time of the water pump in addition to providing time for the second controller 158.

The second controller 158 opens and closes the first valve 124, the second valve 126, the third valve 136, and the fourth valve 138 in two general ways:

The second way is to close the first valve 124 and the second valve 126 and open the third valve 136 and the fourth valve 138 simultaneously. At this time, the fluid with low ion concentration flowing out of water outlet pipe 120 enters waste water pipe 122 from water knockout pipe 132. Since the first valve 124 is closed, the fluid with a low ion concentration cannot flow into the waste water tank 130, and flows into the raw water tank 128 from the return pipe 134. Since the second valve 126 is also closed at this time, the fluid having a high ion concentration flowing out of the membrane stack 102 also flows into the raw water tank 128 through the return pipe 134.

The second way is to pass the fluid flowing into the membrane stack 102 from the return pipe 134 into the raw water tank 128. In this manner, the operating conditions of the water treatment system 100 may be unstable, and in particular, the set ion concentration of the fluid flowing out of the outlet pipe 120 may not be consistent with the set target, and if the water discharged from the membrane stack 102 flows directly out of the outlet pipe 120 or into the waste water tank 130, the fluid with the required ion concentration may not be obtained. After a period of stable operation of the water treatment system 100, the second controller 158 is switched to the first control mode to ensure that the fluid exiting the membrane module reaches a predetermined ionic concentration.

In the use of the water purifier of this embodiment, the water purifier can set up different application scenarios for the user to the TDS of effluent is corresponded to the pertinence setting. The user can use water actual conditions according to own current needs, directly through the preset application scene of purifier, selects the pure water of different TDS.

Generally, the voltage regulator 114 regulates the voltage between the two electrodes to be in a range of 0V to 60V. In the process of adjusting high TDS to low TDS, a static pressurization method is adopted, and high voltage required by adjusting voltage to low TDS is firstly maintained t₁s, then starting the self-priming pump to feed water, closing the electromagnetic valves 1 and 3, opening the electromagnetic valves 2 and 4 to discharge the pure water and the waste water back to the original water tank, t₂s, closing the electromagnetic valves 2 and 4, opening the electromagnetic valves 1 and 3, discharging the pure water through the post-filter element and the instant heating module for drinking, and discharging the wastewater into the wastewater tank.

In a more specific embodiment, the following application scenarios are: the current initial state of the water purifier: the water TDS in the dilute chamber 106 is 125 and the voltage between the two electrodes 112 is 5V. The TDS of purified water required by the user is 30.

Therefore, the water purifier does not start the water pump, and the voltage between the two electrodes 112 is adjusted to 40V ± 2V, and the state is maintained for 10 seconds, so that the TDS of the purified water in the fresh water chamber 106 can reach 30.

At this point, the voltage between the two electrodes 112 changes the TDS of the water between the dilute chamber 106 and the concentrate chamber 108. For the water pump is turned on, the inlet tube continuously feeds untreated water into the fresh water chamber 106, and the water in the fresh water chamber 106 continuously flows out of the outlet tube 120, which can more quickly allow the TDS of the water in the fresh water chamber 106 to reach the target TDS value. Over 10 seconds, the TDS of the water within the dilute chamber 106 has reached the user set target value of 30.

After 10 seconds, the timer 160 turns on the water pump which pumps the untreated water from the raw water tank 128 along the inlet tube set 118 into the fresh water chamber 106 and the concentrate chamber 108, at which time the flow valve 146 controls the flow of the inlet water to 350 ml. It is clear that the flow rate of the incoming water is small and that the electrodes 112 are more likely to quickly reduce the TDS of the purified water in the fresh water chamber 106.

After turning on the water pump, the first valve 124 and the second valve 126 are closed, and the third valve 136 and the fourth valve 138 are opened. At this time, the water flowing out of the water outlet pipe 120 and the waste water pipe 122 passes through the front half of the second valve 126 of the waste water pipe 122, enters the water return pipe 134, and finally flows into the raw water tank 128. This can guarantee under the initial condition, the not up to standard water of TDS that exists in outlet pipe 120 can not follow outlet pipe 120 and flow, avoids the user to drink not up to standard water, and especially when the user only needs a little cup, a small amount of not up to standard water also can cause obvious influence to user experience. Meanwhile, the water is returned to the original water tank 128, so that waste of water resources is avoided.

After the water pump is turned on for 10 seconds, the water in the initial state in the water outlet pipe 120 is completely flushed, at this time, the first valve 124 and the second valve 126 are opened, the third valve 136 and the fourth valve 138 are closed, and pure water according with the user setting flows out from the water using connector 154 along the water outlet pipe 120, so that the user can use the pure water directly.

And in the process of regulating the low TDS to the high TDS, a voltage cutoff method is adopted, and the voltage t is cut off₃Required low voltage when s back regulation voltage reaches high TDS starts the self priming pump and intakes, closes solenoid valve 1, 3, opens solenoid valve 2, 4, makes pure, waste water all arrange back former water tank, t₄s, closing the electromagnetic valves 2 and 4, opening the electromagnetic valves 1 and 3, discharging the pure water through the post-filter element and the instant heating module for drinking, and discharging the wastewater into the wastewater tank. The specific application scenarios are as follows:

the current initial state of the water purifier: the water TDS in the dilute chamber 106 is 30 and the voltage between the two electrodes 112 is 5V. The TDS of the purified water required by the user is 125.

For this reason, the water purifier does not start the water pump at first, and adjusts the voltage between the two electrodes 112 to 0V, and maintains this state for 5 seconds. During this time, the TDS of the water between the dilute chamber 106 and the concentrate chamber 108 will gradually decrease in difference as the voltage across the electrodes 112 is removed.

Over the 5 seconds, the TDS of the water within the dilute chamber 106 has reached or even exceeded the user set 125 target value.

At this time, the voltage between the two electrodes 112 was adjusted to 28V. + -.2V, and this state was maintained for 15 seconds. It is ensured that the dilute chamber 106 is able to bring the TDS of the purified water to 125.

While the voltage is applied to both electrodes 112, the timer 160 turns on the water pump which pumps the untreated water from the raw water tank 128 along the inlet tube set 118 into the fresh water chamber 106 and the concentrate chamber 108, at which time the flow valve 146 controls the flow of the inlet water to 500 ml. It is clear that with a high incoming flow rate, the TDS drop of the purified water in the fresh water chamber 106 will be relatively small.

After turning on the water pump, the first valve 124 and the second valve 126 are closed, and the third valve 136 and the fourth valve 138 are opened. At this time, the water flowing out of the water outlet pipe 120 and the waste water pipe 122 passes through the front half of the second valve 126 of the waste water pipe 122, enters the water return pipe 134, and finally flows into the raw water tank 128. This can guarantee under the initial condition, the not up to standard water of TDS who exists in outlet pipe 120 can not follow outlet pipe 120 and flow, avoids the user to drink not up to standard water, and especially when the user only needs a small cup, a small amount of not up to standard water also can cause obvious influence to user experience. Meanwhile, the water is returned to the original water tank 128, so that waste of water resources is avoided.

Above-mentioned four valve bodies can guarantee when switching TDS in the use, unsatisfied target TDS's waste water flows back former water tank, water economy resource. The change of the electric purification membrane stack desalination rate effect is realized through the adjustment to the voltage applied to the membrane stack, the adjustable processing of different TDS and temperatures is realized through the cooperation of instant heating module, and the demand to the drinking water under different scenes is satisfied.

After the water pump is turned on for 15 seconds, the water in the initial state in the water outlet pipe 120 is completely flushed, at this time, the first valve 124 and the second valve 126 are opened, the third valve 136 and the fourth valve 138 are closed, and pure water according with the user setting flows out of the water using connector 154 along the water outlet pipe 120, so that the user can use the pure water directly.

For when having set for the voltage of two electrodes 112 corresponding to target TDS, just turn on the water pump, through a period of time, turn on the water pump again, can be faster make the TDS of the pure water in the fresh water room 106 reach and preset the target. The waiting time of the user is saved, and meanwhile, the consumption of resources is also saved.

It should be noted that, for different membrane stacks 102, the voltage between the two electrodes 112 and the flow rate of the water inlet pipe, as well as the waiting time for starting the water pump, may be different, and may be set according to the actual conditions of the membrane stack 102.

Furthermore, a front filter element 148 is arranged on the water inlet main pipe 140 of the water purifier, and a rear filter element 150 is arranged on the water outlet pipe 120. The front filter element 148 can filter out impurities such as silt contained in the untreated water flowing from the raw water tank 128, and the rear filter element 150 can eliminate the peculiar smell of the purified water.

Further, an instant heating module may be provided on the outlet pipe 120 between the rear filter element 150 and the water usage joint 154. The instant heating module can be used for directly heating the temperature of the purified water flowing out of the water outlet pipe 120, particularly when a user needs to brew drinks such as tea, coffee and the like, and the user does not need to heat the drinks.

In addition, the user is when using the purifier at every turn, and the purifier all is in initial condition, and its play water TDS is the play water TDS after system water is accomplished last time, and control voltage adjusting device's voltage is 5V to prevent the ion interpenetration in the membrane stack after system water is accomplished last time.

Through the embodiment of the invention, the target ion concentration of the effluent can be adjusted on line according to requirements. When switching target ion concentration, user's latency is short, can wash the deposit water in the geminate transistor voluntarily moreover to guarantee that the water that the user obtained all accords with the requirement.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An ion concentration adjusting method is used for a water treatment system, the water treatment system comprises a membrane stack and two electrodes arranged on two sides of the membrane stack, the membrane stack comprises a concentrated water chamber and a fresh water chamber which have different ion concentrations, and the ion concentration adjusting method comprises the following steps:

acquiring a concentration adjusting instruction;

determining the target ion concentration of the liquid in the fresh water chamber according to the concentration adjusting instruction;

determining a membrane stack voltage difference value according to the target ion concentration;

and controlling the difference of the voltages applied to the two electrodes to be the difference of the membrane stack voltages until the ion concentration in the fresh water chamber is the target ion concentration.

2. The ion concentration adjustment method according to claim 1, further comprising, after the ion concentration in the fresh water chamber is the target ion concentration:

and controlling the difference of the voltages applied to the two electrodes to be the holding voltage difference.

3. The ion concentration adjustment method according to claim 1 or 2, wherein the water treatment system comprises a water tank, and a water inlet pipe communicating with the membrane stack and the water tank, the water inlet pipe being provided with a flow valve,

before the controlling the difference of the voltages applied to the two electrodes is the difference of the membrane stack voltages, the method further comprises the following steps:

determining the target inflow rate of the water fed into the fresh water chamber through the water inlet pipe according to the concentration adjusting instruction;

and determining a first water inlet flow and a second water inlet flow which respectively flow into the fresh water chamber and the concentrated water chamber through the flow valve until the first water inlet flow is the target water inlet flow.

4. The ion concentration adjustment method according to claim 3,

the controlling the difference of the voltages applied to the two electrodes to be the difference of the membrane stack voltages until the ion concentration in the fresh water chamber is the target ion concentration specifically comprises:

obtaining the concentration of fresh water ions in the fluid in the fresh water chamber;

determining the magnitude relation between the fresh water ion concentration and the target ion concentration;

if the concentration of the fresh water ions is smaller than the target ion concentration, the concentration of the fresh water ions is increased according to a voltage disconnection rule until the concentration of the fresh water ions is the target ion concentration; or

And if the concentration of the fresh water ions is greater than the target ion concentration, reducing the concentration of the fresh water ions according to a static pressurization rule until the concentration of the fresh water ions is the target ion concentration.

5. The ion concentration adjustment method according to claim 4, wherein the water treatment system comprises: the water inlet pipe is provided with a water inlet pipe, the fresh water chamber is communicated with the fresh water chamber, and the fresh water chamber is communicated with the fresh water chamber; the water treatment system further comprises: the water return pipe is connected with the waste water pipe, the water return pipe is arranged between the second valve and the membrane stack, a third valve is arranged on the water return pipe, and a fourth valve is arranged on the water return pipe.

6. The method according to claim 5, wherein the reducing the fresh water ion concentration according to the static pressurization rule specifically comprises:

adjusting the difference of the voltages of the two electrodes according to the difference of the membrane stack voltages;

determining first adjusting time and second adjusting time according to the magnitude relation between the fresh water ion concentration and the target water inlet flow;

controlling the pump body to remain closed for the first adjustment time;

controlling the pump body to start, determining the starting time of the pump body, closing the first valve and the second valve, and opening the third valve and the fourth valve;

and when the starting time exceeds the second adjusting time, opening the first valve and the second valve, and closing the third valve and the fourth valve.

7. The ion concentration adjustment method according to claim 5, wherein the increasing the fresh water ion concentration according to the off-voltage rule specifically comprises:

determining third adjusting time and fourth adjusting time according to the magnitude relation between the fresh water ion concentration and the target water inlet flow;

controlling the pump body to be kept closed for the third adjusting time, and controlling the difference of the voltages applied to the two electrodes to be 0 at the third adjusting time;

controlling the difference of the voltages applied to the two electrodes to be the difference of the membrane stack voltages;

and when the starting time exceeds the fourth adjusting time, opening the first valve and the second valve, and closing the third valve and the fourth valve.

8. The method according to claim 5, wherein a heating device is provided on the water outlet pipe, and before determining the difference between the stack voltages according to the target ion concentration, the method further comprises:

acquiring the water outlet temperature of the water outlet pipe;

determining a target temperature value of the heating device according to the concentration adjusting instruction;

and controlling the heating device to heat the fluid in the water outlet pipe until the water outlet temperature is the target temperature value.

9. The ion concentration adjustment method according to claim 8, wherein the determining the target temperature value of the heating device according to the concentration adjustment instruction specifically includes:

determining the target ion concentration according to the concentration adjustment instruction;

and determining a target temperature value corresponding to the target ion concentration and the target inflow water flow.

10. A water treatment system, comprising:

a processor and a memory, the memory having stored therein a computer program for, when executing the computer program, implementing the steps of the ion concentration adjustment method according to any one of claims 1 to 9.

11. The water treatment system of claim 10, comprising:

the membrane stack comprises a concentrated water chamber and a fresh water chamber which have different ion concentrations;

the pump body is communicated with the membrane stack through a water inlet pipe;

the water outlet pipe is communicated with the fresh water chamber, and a first valve is arranged on the water outlet pipe;

the waste water pipe is communicated with the concentrated water chamber, and a second valve is arranged on the waste water pipe;

the water diversion pipe is communicated with the waste water pipe and the water outlet pipe, one end of the water diversion pipe, which is connected with the water outlet pipe, is arranged between the membrane stack and the first valve, and a third valve is arranged on the water diversion pipe;

the water return pipe is communicated with the water tank and the waste water pipe, one end of the water return pipe, which is connected with the waste water pipe, is arranged between the second valve and the membrane stack, and a fourth valve is arranged on the water return pipe.

12. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, is able to carry out the steps of the ion concentration adjustment method according to one of claims 1 to 9.