1. A domestic water purification unit, its characterized in that, domestic water purification unit includes:

a single-channel desalination assembly and a dual-channel desalination assembly arranged in parallel, the single-channel desalination assembly comprising a first port and a second port, the dual-channel desalination assembly comprising a first water inlet and a first water outlet, wherein the first port is connected in parallel with the first water inlet and the second port is connected in parallel with the first water outlet;

the pipeline system comprises a first pipeline, a second pipeline and a third pipeline, the first pipeline is connected with the first port and the first water inlet, the second pipeline is connected with the second port and the first water outlet, and the third pipeline is connected with the first port;

the double-flow-channel desalination assembly purifies the water flowing in through the first water inlet, the generated pure water flows into the single-flow-channel desalination assembly through the first water outlet and the second port, and the saline substances in the single-flow-channel desalination assembly flow into the third pipeline through the first port after being flushed by the flowing pure water.

2. The domestic water purification apparatus of claim 1, wherein said conduit system further comprises a filter assembly disposed on a side of said first port of said single channel desalination assembly and/or a filter assembly disposed on a side of said second port of said single channel desalination assembly.

3. The domestic water purification device of claim 2, wherein the filtration assembly comprises a physical entrapment function filter element and/or a physical adsorption function filter element; the physical interception function filter element comprises at least one of a microfiltration membrane and an ultrafiltration membrane; the physical adsorption functional filter element comprises at least one of activated carbon particles and activated carbon rods.

4. The domestic water purification apparatus of claim 3, wherein said physical entrapment function filter element has a filtration accuracy in the range of 10 nm to 1 μm.

5. The domestic water purification apparatus of claim 3, wherein said physical entrapment function filter is located closer to said single-channel desalination module than said physical adsorption function filter is to said single-channel desalination module.

6. The domestic water purification apparatus of claim 5, wherein said filter assembly is disposed between said second port and said first water outlet; when the single-channel desalination assembly is powered off or reverse voltage is applied, the pure water flowing out of the first water outlet flows into the single-channel desalination assembly through the second port after being filtered by the filtering assembly, and salt substances in the single-channel desalination assembly are flushed to the third pipeline.

7. The domestic water purification apparatus of claim 6, wherein when the single-channel desalination assembly is de-energized or a reverse voltage is applied, the pure water from the first water outlet flows in a reverse direction through the physical adsorption function filter element, then flows in a reverse direction through the physical retention function filter element, and then flows into the single-channel desalination assembly through the second port, so as to flush the salt substances in the single-channel desalination assembly to the third pipeline.

8. The domestic water purification apparatus of claim 1, wherein said conduit system further comprises a waterway switch device, said waterway switch device being connected to said first port;

when positive voltage is applied to the single-channel desalination assembly and the waterway switching device is tangentially connected to the first pipeline, purifying water flowing in through the first pipeline and the first port, and enabling the treated water to flow out to the second pipeline through the second port;

when the single-channel desalination assembly is powered off or reverse voltage is applied and the waterway switching device is switched tangentially to the third pipeline, saline substances in the single-channel desalination assembly are flushed to the third pipeline by water flowing in through the first water outlet and the second port.

9. The domestic water purification apparatus of claim 1, wherein said single-channel desalination assembly comprises a physisorption desalination cartridge and/or a chemisorption desalination cartridge.

10. The domestic water purification apparatus of claim 9, wherein said chemisorptive desalination cartridge comprises at least one of an ion exchange resin cartridge, a bipolar membrane electrodeionization cartridge;

the physical adsorption desalination filter element comprises at least one of a capacitance desalination filter element and a membrane capacitance desalination filter element.

11. The domestic water purification apparatus of claim 1, wherein said dual-channel desalination assembly comprises at least one of a reverse osmosis membrane cartridge, a nanofiltration membrane cartridge, and an electrodialysis membrane cartridge.

12. The domestic water purification apparatus of claim 1, further comprising a power supply module and a control module, wherein the control module controls the power supply module to cut off power supply to the single channel desalination module or to apply a reverse voltage to the single channel desalination module when the current time is a preset time, and controls the waterway switching device to be tangential to the third pipeline.

13. The domestic water purification apparatus of claim 1, wherein said pipe system further comprises a filter assembly disposed on said first pipe and/or a filter assembly disposed on said second pipe.

14. The domestic water purification apparatus of claim 1, wherein said pipe system further comprises a conductivity detection assembly disposed on said first pipe and/or a conductivity detection assembly disposed on said second pipe.

15. The domestic water purification device of any one of claims 1-14, wherein said second pipe is connected to a plurality of water outlet pipes in the direction of water outlet, and at least one of said water outlet pipes is provided with a heating unit.

Background

Along with the progress of society, the living standard of people is improved, and people pay more and more attention to the sanitation of self diet drinking water. At present, tap water is usually treated by a chlorination method, so that water-borne diseases can be effectively prevented, but the tap water contains salt, impurities, residual chlorine and the like, does not have conditions for direct drinking, and needs to be purified before drinking.

In the prior art, a reverse osmosis membrane is often used to purify tap water to prepare pure water which can be directly drunk. The reverse osmosis membrane can effectively prevent substances such as bacteria, viruses, water scales, salt ions and the like and only allows water molecules to pass through, thereby ensuring the safety of water. After a period of time, the effect of purifying tap water by the reverse osmosis membrane is weakened, and the quality of the prepared pure water is poor.

Disclosure of Invention

The embodiment of the application provides a domestic purifier adopts parallelly connected single-flow-channel desalination subassembly and double-flow-channel desalination subassembly, and the regeneration is washed to single-flow-channel desalination subassembly through the water that double-flow-channel desalination subassembly carried out after the purification treatment, has prolonged single-flow-channel desalination subassembly's life, has ensured the quality of water of the pure water of preparing.

The application provides a domestic purifier, domestic purifier includes:

a single-channel desalination assembly and a dual-channel desalination assembly arranged in parallel, the single-channel desalination assembly comprising a first port and a second port, the dual-channel desalination assembly comprising a first water inlet and a first water outlet, wherein the first port is connected in parallel with the first water inlet and the second port is connected in parallel with the first water outlet;

the pipeline system comprises a first pipeline, a second pipeline and a third pipeline, the first pipeline is connected with the first port and the first water inlet, the second pipeline is connected with the second port and the first water outlet, and the third pipeline is connected with the first port;

the double-flow-channel desalination assembly purifies the water flowing in through the first water inlet, the generated pure water flows into the single-flow-channel desalination assembly through the first water outlet and the second port, and the saline substances in the single-flow-channel desalination assembly flow into the third pipeline through the first port after being flushed by the flowing pure water.

Illustratively, the piping system further comprises a filter assembly disposed on a side of the first port of the single-channel desalination assembly and/or a filter assembly disposed on a side of the second port of the single-channel desalination assembly.

Illustratively, the filtration assembly comprises a physical entrapment function filter element and/or a physical adsorption function filter element; the physical interception function filter element comprises at least one of a microfiltration membrane and an ultrafiltration membrane; the physical adsorption functional filter element comprises at least one of activated carbon particles and activated carbon rods.

Illustratively, the physical entrapment function filter element has a filtration accuracy in the range of 10 nanometers to 1 micron.

Illustratively, the physical entrapment function filter element is located a distance from the single flow channel desalination assembly that is closer to the physical adsorption function filter element than the single flow channel desalination assembly.

Illustratively, the filter assembly is disposed between the second port and the first outlet; when the single-channel desalination assembly is powered off or reverse voltage is applied, the pure water flowing out of the first water outlet flows into the single-channel desalination assembly through the second port after being filtered by the filtering assembly, and salt substances in the single-channel desalination assembly are flushed to the third pipeline.

Illustratively, when the single-channel desalination assembly is powered off or a reverse voltage is applied, the pure water flowing out of the first water outlet reversely flows through the physical adsorption function filter element, reversely flushes the physical interception function filter element, and then flows into the single-channel desalination assembly through the second port, so as to flush the salt substances in the single-channel desalination assembly to the third pipeline.

Exemplarily, the pipeline system further comprises a waterway switching device, and the waterway switching device is connected with the first port;

when positive voltage is applied to the single-channel desalination assembly and the waterway switching device is tangentially connected to the first pipeline, purifying water flowing in through the first pipeline and the first port, and enabling the treated water to flow out to the second pipeline through the second port;

when the single-channel desalination assembly is powered off or reverse voltage is applied and the waterway switching device is switched tangentially to the third pipeline, saline substances in the single-channel desalination assembly are flushed to the third pipeline by water flowing in through the first water outlet and the second port.

Illustratively, the single-channel desalination assembly comprises a physisorption desalination cartridge and/or a chemisorption desalination cartridge.

Illustratively, the chemisorptive desalination cartridge comprises at least one of an ion exchange resin cartridge, a bipolar membrane electrodeionization cartridge;

the physical adsorption desalination filter element comprises at least one of a capacitance desalination filter element and a membrane capacitance desalination filter element.

Illustratively, the dual-channel desalination assembly comprises at least one of a reverse osmosis membrane filter cartridge, a nanofiltration membrane filter cartridge, and an electrodialysis membrane filter cartridge.

Illustratively, the household water purifying device further comprises a power supply assembly and a control assembly, wherein when the current time is preset time, the control assembly controls the power supply assembly to cut off power supply to the single-channel desalting assembly or applies reverse voltage to the single-channel desalting assembly, and simultaneously controls the waterway switching device to tangentially connect to the third pipeline.

Illustratively, the pipeline system further comprises a filter assembly arranged on the first pipeline and/or a filter assembly arranged on the second pipeline.

Illustratively, the pipeline system further comprises a conductivity detection assembly arranged on the first pipeline and/or a conductivity detection assembly arranged on the second pipeline.

For example, the water outlet direction of the second pipeline is connected with a plurality of water outlet pipelines, and at least one water outlet pipeline is provided with a heating unit.

The application discloses domestic purifier includes: the system comprises a single-channel desalting component and a double-channel desalting component which are arranged in parallel, wherein the single-channel desalting component comprises a first port and a second port; the pipeline system comprises a first pipeline, a second pipeline and a third pipeline, wherein the first pipeline is connected with a first port and a first water inlet, the second pipeline is connected with a second port and a first water outlet, and the third pipeline is connected with the first port; the double-flow-channel desalting component purifies the water flowing in through the first water inlet, the generated pure water flows into the single-flow-channel desalting component through the first water outlet and the second port, and salt substances in the single-flow-channel desalting component flow into the third pipeline through the first port after being washed by the flowing pure water. The pure water generated by the purification treatment of the double-flow-channel desalting component washes and regenerates the single-flow-channel desalting component, so that the scaling risk during the regeneration of the single-flow-channel desalting component is reduced, and the water quality of the prepared pure water is guaranteed.

Drawings

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

Fig. 1 is a schematic structural diagram of a household water purifying device according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of an embodiment of a household water purifying apparatus;

FIG. 3 is a schematic diagram of a bipolar membrane electrodeionization cartridge desalination process;

FIG. 4 is a schematic diagram of the bipolar membrane electrodeionization filter regeneration process;

fig. 5 is a schematic view of the connection relationship of the parts in the household water purifying device.

Reference numerals: 100. a single-channel desalination assembly; 110. a first port; 120. a second port; 200. a dual-channel desalination assembly; 210. a first water inlet; 220. a first water outlet; 300. a piping system; 310. a first pipeline; 320. a second pipeline; 330. a third pipeline; 340. a filter assembly; 350. a waterway switching device; 410. a control component; 420. a power supply assembly;

10. a conductivity detection component; 20. a drive assembly; 30. a flow detection component; 40. a temperature detection assembly;

900. a bipolar membrane electrodeionization filter element; 910. an electrode; 911. a first electrode; 912. a second electrode; 920. bipolar membrane; 921. a cation exchange membrane; 922. an anion exchange membrane.

Detailed Description

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

The flow diagrams depicted in the figures are merely illustrative and do not necessarily include all of the elements and operations/steps, nor do they necessarily have to be performed in the order depicted. For example, some operations/steps may be decomposed, combined or partially combined, so that the actual execution sequence may be changed according to the actual situation. In addition, although the division of the functional blocks is made in the device diagram, in some cases, it may be divided in blocks different from those in the device diagram.

The embodiment of the application provides a household water purifying device which can be a water purifier, such as a table-board type water purifying/drinking machine.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Fig. 1 is a schematic structural diagram of the household water purifying device in the embodiment.

Referring to fig. 1, the household water purifying apparatus includes a single-channel desalination module 100 and a double-channel desalination module 200, which are disposed in parallel, and a pipeline system 300.

As shown in fig. 1, the single channel desalination module 100 includes a first port 110 and a second port 120, and when a positive voltage is applied, the water flowing into the first port 110 is purified, and the treated water flows out through the second port 120. Dual-channel desalination assembly 200 includes a first water inlet 210 and a first water outlet 220, with first port 110 being connected in parallel with first water inlet 210, and second port 120 being connected in parallel with first water outlet 220. When the driving pressure is applied, the water flowing in from the first water inlet 210 is purified, and the treated water flows out through the first water outlet 220.

Specifically, the pipe system 300 includes a first pipe 310, a second pipe 320 and a third pipe 330, the first pipe 310 connects the first port 110 and the first water inlet 210, the second pipe 320 connects the second port 120 and the first water outlet 220, and the third pipe 330 connects the first port 110.

First conduit 310 is used to deliver water to first port 110 and first water inlet 210, and second conduit 320 is used to output pure water produced by the purification process performed by single-channel desalination assembly 100 and dual-channel desalination assembly 200.

When the single-channel desalination module 100 is flushed and regenerated, the dual-channel desalination module 200 purifies the water flowing in through the first water inlet 210, the generated pure water flows into the single-channel desalination module 100 through the first water outlet 220 and the second port 120 of the single-channel desalination module 100, the single-channel desalination module 100 is powered off or is applied with a reverse voltage, and the salt substances in the single-channel desalination module 100 flow into the third pipeline 330 through the first port 110 after being flushed by the pure water flowing in from the second port 120.

For example, a first solenoid valve may be disposed in the second line 320, a second solenoid valve may be disposed in the third line 330, and a third solenoid valve may be disposed on the side of the first port 110 of the parallel branch where the single channel desalination assembly 100 is located. When water is produced, forward voltage is applied to the single-channel desalination assembly 100, the first electromagnetic valve and the third electromagnetic valve are opened, water input by the first pipeline 310 flows into the single-channel desalination assembly 100 through the third electromagnetic valve, the single-channel desalination assembly 100 purifies the water, and the treated pure water is output to the second pipeline 320 through the second port 120 and the first electromagnetic valve. Meanwhile, water input by the first pipeline 310 flows into the dual-channel desalination assembly 200 through the first water inlet 210, the dual-channel desalination assembly 200 purifies the water, and the treated pure water is output to the second pipeline 320 through the first water outlet 220 and the first electromagnetic valve.

When the single-channel desalination assembly 100 is flushed and regenerated, the single-channel desalination assembly 100 is powered off or reverse voltage is applied, the first solenoid valve is closed, the second solenoid valve and the third solenoid valve are opened, water input from the first pipeline 310 flows into the double-channel desalination assembly 200 through the first water inlet 210, the double-channel desalination assembly 200 purifies the water, the treated pure water flows into the single-channel desalination assembly 100 through the first water outlet 220 and the second port 120, and salt substances in the single-channel desalination assembly 100 are flushed by the pure water flowing from the second port 120 and then flow into the third pipeline 330 through the first port 110 and the second solenoid valve.

The double-channel desalination assembly 200 is used for purifying water, the generated pure water flows into the single-channel desalination assembly 100, and the single-channel desalination assembly 100 is washed and regenerated, so that compared with the method of washing and regenerating with tap water, the scaling risk of the single-channel desalination assembly 100 during regeneration is reduced, the service life of the single-channel desalination assembly 100 is prolonged, and the water quality of the prepared pure water is improved.

In some embodiments, as shown in fig. 2, the piping system 300 further comprises a filter assembly 340 disposed on the parallel branch of the single channel desalination assembly 100, wherein the filter assembly 340 is disposed on either the first port 110 side of the single channel desalination assembly 100 or the second port 120 side of the single channel desalination assembly 100.

When the filtering component 340 is disposed at one side of the first port 110 of the single channel desalination component 100, in the process of water purification of the single channel desalination component 100, the water output from the first pipeline 310 is filtered by the filtering component 340 and then flows into the single channel desalination component 100 through the first port 110, and the single channel desalination component 100 purifies the inflow water.

When the filtering component 340 is disposed at one side of the second port 120 of the single channel desalination component 100, in the process of water purification of the single channel desalination component 100, the water output from the first pipeline 310 flows into the single channel desalination component 100 through the first port 110, the single channel desalination component 100 purifies the inflow water, and the treated water flows into the second pipeline 320 after being filtered by the filtering component 340.

Illustratively, the filter assembly 340 can include a physical entrapment function filter element and/or a physical adsorption function filter element. The physical interception function filter element comprises at least one of a microfiltration membrane, an ultrafiltration membrane and a PP cotton filter element, and the filtration precision of the physical interception function filter element is between 10 nanometers and 5 micrometers, preferably between 10 nanometers and 1 micrometer. The physical adsorption function filter element comprises at least one of activated carbon particles and activated carbon rods, and the removal rate of COD in water by the physical adsorption function filter element is more than 20%, preferably more than 50%.

In some embodiments, the filter assembly is disposed between the second port 120 and the first water outlet 220, i.e., on the side of the second port 120 of the single channel desalination assembly 100. When the single-channel desalination module 100 is de-energized or a reverse voltage is applied, pure water produced by the purified water in the dual-channel desalination module 200 flows through the filter module 340, reversely flushes the filter module 340, flows into the single-channel desalination module 100 through the second port 120, and flushes the salt in the single-channel desalination module 100 to the third pipeline 330.

Illustratively, when the filter assembly 340 includes a plurality of filter elements, such as a physical entrapment function filter element and a physical adsorption function filter element, the physical entrapment function filter element of the non-activated carbon type is located closer to the single channel desalination assembly 100 than the physical adsorption function filter element of the activated carbon type is located to the single channel desalination assembly 100, for example, the physical entrapment function filter element of the non-activated carbon type is located closest to the second port 120 of the single channel desalination assembly 100, and the physical adsorption function filter element of the activated carbon type is located furthest from the single channel desalination assembly 100, so that a small amount of residual chlorine generated by the single channel desalination assembly 100 can inhibit the physical entrapment function filter element, whereas if the physical adsorption function filter element of the activated carbon type is located closest to the second port 120 of the single channel desalination assembly 100, the residual chlorine generated by the single channel desalination assembly 100 is adsorbed by the physical adsorption function filter element of the activated carbon type, the function of bacteriostasis on the physical interception function filter core can not be achieved.

For example, the second port 120 of the single-channel desalination module 100 is sequentially connected to an ultrafiltration membrane and an activated carbon rod, and when the single-channel desalination module 100 is powered off or reverse voltage is applied, pure water generated by purifying water through the double-channel desalination module 200 reversely passes through physical adsorption function filter elements such as the activated carbon rod, reversely washes physical interception function filter elements such as the ultrafiltration membrane, and finally enters the single-channel desalination module 100 to wash and regenerate the single-channel desalination module 100, thereby reducing scaling risk when the single-channel desalination module 100 is regenerated.

The pure water generated by purifying the water through the double-channel desalination assembly 200 firstly passes through the filtering assemblies 340 such as the ultrafiltration membrane and reversely washes the filtering assemblies 340 such as the ultrafiltration membrane, can prolong the service life of the filtering assemblies 340 such as the ultrafiltration membrane and then enters the single-channel desalination assembly 100 to wash and regenerate the single-channel desalination assembly 100, so that the scaling risk when the single-channel desalination assembly 100 is regenerated is reduced, the service life of the single-channel desalination assembly 100 is prolonged, and the water quality of the prepared pure water is ensured.

In some embodiments, as shown in fig. 2, the piping system 300 further includes a waterway switch 350, wherein the waterway switch 350 is connected to the first port 110.

Illustratively, the waterway switching device 350 includes a tangential valve or a plurality of two-way solenoid valve sets, such as three-way valves, etc.

In the process of purifying water in the single-channel desalination module 100, a positive voltage is applied to the single-channel desalination module 100, the waterway switching device 350 is tangentially connected to the first pipeline 310, water which is input from the first pipeline 310 and flows in through the first port 110 is purified, and the treated water flows out through the second port 120 to the second pipeline 320.

During the rinsing regeneration of the single-channel desalination module 100, the single-channel desalination module 100 is powered off or a reverse voltage is applied, the waterway switching device 350 is switched tangentially to the third pipeline 330, the dual-channel desalination module 200 performs water purification, the produced pure water flows into the single-channel desalination module 100 through the first water outlet 220 and the second port 120, and the salt substances in the single-channel desalination module 100 are rinsed to the third pipeline 330 by the inflowing pure water.

In some embodiments, the single-channel desalination assembly 100 comprises a physisorption desalination cartridge and/or a chemisorption desalination cartridge. The dual-channel desalination assembly 200 includes at least one of a Reverse Osmosis membrane (RO) filter cartridge, a nanofiltration membrane filter cartridge, and an electrodialysis membrane filter cartridge.

Illustratively, the chemisorptive desalination cartridge can include at least one of an ion exchange (IX) resin cartridge, a bipolar membrane (Biopolar, BP) electrodeionization cartridge.

Exemplary, the physisorption desalination filter element may include at least one of a Capacitive Desalination (CDI) filter element, a Membrane Capacitive Desalination (MCDI) filter element.

Specifically, the capacitive desalination filter element, the membrane capacitive desalination filter element, the bipolar membrane electrodeionization filter element and the like can cause the directional migration of cations and anions when being powered on, so as to realize the purification treatment of water, and the filter elements can be called as electrically-driven single-channel desalination filter elements. The reverse osmosis membrane filter core can realize the purification treatment of water when exerting pressure, can be called pressure drive binary channels desalination filter core.

Specifically, as shown in fig. 3 and 4, a schematic diagram of a structure of a bipolar membrane electrodeionization filter cartridge 900 is shown.

As shown in fig. 3 and 4, the bipolar membrane electrodeionization filter cartridge 900 includes one or more pairs of electrodes 910, and at least one bipolar membrane 920 or a plurality of spaced-apart bipolar membranes 920 is disposed between at least one pair of electrodes 910. Wherein, bipolar membrane 920 includes cation exchange membrane 921 and anion exchange membrane 922, and cation exchange membrane 921 and anion exchange membrane 922 set up relatively, compound together. For example, the bipolar membrane 920 can be produced by a hot press molding method, a bonding molding method, a casting molding method, an anion and cation exchange radical method, an electrodeposition molding method, or the like. Specifically, there is no space between the cation exchange membrane 921 and the anion exchange membrane 922 on one bipolar membrane 920, for example, water does not pass between the cation exchange membrane 921 and the anion exchange membrane 922 on the same bipolar membrane 920 when flowing through the bipolar membrane electrodeionization filter cartridge 900.

As shown in fig. 3 and 4, the pair of electrodes 910 includes a first electrode 911 and a second electrode 912, wherein the first electrode 911 is disposed opposite to a cation exchange membrane 921 of the bipolar membrane 920 adjacent to the first electrode 911, and the second electrode 912 is disposed opposite to an anion exchange membrane 922 of the bipolar membrane 920 adjacent to the second electrode 912.

Fig. 3 is a schematic diagram showing the operation principle of the bipolar membrane electrodeionization filter element 900 in the process of purifying water. Here, the potential of the first electrode 911 is higher than that of the second electrode 912, that is, a voltage in a forward direction is applied between the first electrode 911 and the second electrode 912. At this time, anions such as chloride ions in the raw water to be purified move towards the first electrode 911, and replace OH < - > in the anion exchange membrane 922 in the direction of the first electrode 911, and the OH < - > enters the flow channel between the adjacent bipolar membranes 920; meanwhile, cations such as Na + in the raw water move towards the second electrode 912 to replace H + in the cation exchange membrane 921 in the direction of the second electrode 912, and the H + enters the flow channel; h + and OH-are subjected to neutralization reaction in the flow channel to generate water, so that the salt in the raw water is removed, and purified pure water flows out from the tail end of the flow channel.

As shown in fig. 4, when a voltage in the opposite direction is applied between the first electrode 911 and the second electrode 912, so that the potential of the first electrode 911 is lower than that of the second electrode 912, OH "and H + ions are generated on the surfaces of the cation exchange membrane 921 and the anion exchange membrane 922 of the bipolar membrane 920 under the action of an electric field, cations such as Na + inside the cation exchange membrane 921 are replaced by H + ions and move toward the first electrode 911 at a low potential, anions such as chloride ions in the anion exchange membrane 922 are replaced by OH" and move toward the second electrode 912 at a high potential, and the cations such as Na + and the anions such as chloride ions enter the flow channel and can be washed out by water flowing through the bipolar membrane electrodeionization filter 900. Therefore, when the power is off or reverse voltage is applied to the desalting filter cores such as the bipolar membrane electrodeionization filter core 900 and the like, cations such as Na < + >, anions such as chloride ions and the like adsorbed on the bipolar membrane 920 are released, so that salt substances in the desalting filter core can be washed out by water to realize regeneration; water carrying cations such as Na + and anions such as chloride ions can be called concentrated water.

Illustratively, as shown in fig. 5, the household water purifying apparatus may further include a power supply module 420 and a driving module 20, wherein the power supply module 420 is connected to the single channel desalination module 100 and applies a forward voltage or a reverse voltage to the single channel desalination module 100. For example, an electrically driven single-channel desalination filter element is connected to supply power to the electrically driven single-channel desalination filter element. Drive assembly 20 drives water flow to the single-channel desalination assembly 100 and the dual-channel desalination assembly 200. Illustratively, the drive assembly 20 may include a pressure pump.

In some embodiments, the voltage at which the power supply assembly 420 supplies power to the electrically driven single-channel desalination cartridge can be adjusted, and the desalination rate of the electrically driven single-channel desalination cartridge changes as the voltage supplied by the power supply assembly 420 is adjusted.

Exemplarily, the running voltage of the electrically-driven single-channel desalination filter element adapted to the water quality can be set according to the difference of the water quality of the using region of the household water purifying device, so that the water purified by the electrically-driven single-channel desalination filter element can meet the requirement. For example, when the quality of the water supplied from the water supply pipe is hard, the power supply voltage of the power supply module 420 may be set high; when the water quality of the tap water pipe supply water is soft, the supply voltage of the power supply module 420 may be set low.

In other embodiments, the single-channel desalination assembly 100 can be removably received within the interior of a domestic water purification device, such that the single-channel desalination assembly 100 can be removed from the domestic water purification device for flushing when desired, thereby allowing regeneration of the filter elements of the single-channel desalination assembly 100.

In some embodiments, as shown in fig. 5, the household water purifying apparatus further comprises a control module 410, the control module 410 is connected to the power supply module 420, the driving module 20 and the waterway switching device 350, and the power supply module 420 is connected to the single-channel desalination module 100. The control component 410 may include, for example, a single chip microcomputer or the like.

Illustratively, the control component 410 may include input devices, which may include, for example, buttons, knobs, touch screens, microphones, and the like.

Illustratively, when the control module 410 detects an effluent control operation through the input device, such as a user pressing an effluent button, or sends out a voice including an effluent command, the power supply module 420 is controlled to apply a forward voltage to the single channel desalination module 100 according to the detected effluent control operation, and the waterway switching device 350 is controlled to tangentially connect to the first pipeline 310, so that the water input from the first pipeline 310 flows into the single channel desalination module 100, and the purified pure water purified by the single channel desalination module 100 is output to the second pipeline 320.

In some embodiments, when the control module 410 switches to the regeneration mode during a preset time period, such as a time period from 10 pm to half 10 pm, the control module 410 controls the power supply module 420 to cut off power to the single channel desalination module 100 or to apply a reverse voltage to the single channel desalination module 100, and controls the waterway switching device 350 to cut off the current direction to the third pipeline 330. The dual-channel desalination assembly 200 purifies the water, and the generated pure water flows into the single-channel desalination assembly 100 through the first water outlet 220 and the second port 120, so that the salt ions attached to the single-channel desalination assembly 100 enter the water and are discharged out of the single-channel desalination assembly 100 along with the water.

In some embodiments, the piping system 300 further includes a pressure relief valve connected to the first port 110.

For example, the pressure reducing valve comprises a plurality of pressure reducing valves which are connected in series. For example, two pressure reducing valves are connected in series, the pressure reducing valve in series is 2.5kg, the pressure reducing valve in series is 1.5kg, the initial water pressure P0 is reduced to P1 by the pressure reducing valve in series, and the P1 is reduced to the target water pressure Pn by the pressure reducing valve in series.

In some embodiments, as shown in fig. 1 and 2, conduit system 300 further includes a filter assembly 340 disposed on first conduit 310 and/or a filter assembly 340 disposed on second conduit 320.

Illustratively, the filter assembly 340 in the first line 310 is capable of purifying the water entering the single-channel desalination assembly 100 and the dual single-channel desalination assembly 200, for example, removing the water that may contain particulate impurities, residual chlorine, etc., reducing the workload and consumption of the single-channel desalination assembly 100 and the dual single-channel desalination assembly 200, and extending the regeneration cycle and the service life thereof. The filtering assembly 340 on the second pipe 320 can further improve the quality of the pure water output from the household water purifying apparatus.

In some embodiments, the outlet direction of the second pipe 320 may be further connected to a heating unit, for example, a heat exchanger. The heating unit may heat the water flowing out of the second pipe 320 to provide the user with hot water of a desired temperature.

For example, the water outlet direction of the second pipe 320 is connected to a plurality of water outlet pipes, and at least one of the water outlet pipes is provided with a heating unit.

In some embodiments, as shown in FIGS. 1 and 2, a temperature sensing assembly 40 may also be disposed in the first conduit 310, the temperature sensing assembly 40 being configured to sense the temperature of the water flowing to the single-channel desalination assembly 100 and the dual-channel desalination assembly 200.

In some embodiments, as shown in fig. 1 and 2, the piping system 300 further comprises a conductivity detection assembly 10 disposed on the first piping 310 and/or a conductivity detection assembly 10 disposed on the second piping 320, or a conductivity detection assembly 10 disposed on the third piping 330. The water quality of the water at the corresponding position can be detected by the conductivity detection assembly 10. For example, the TDS value is a water quality test indicator specifically set for purified water, and represents the total soluble solids content of water. The TDS value can reflect the water quality to a certain degree, and generally, the lower the TDS value is, the less soluble salts such as heavy metal ions in the water are, and the purer the water quality is.

For example, the conductivity detection module 10 may be disposed on the second port 120 side of the single-channel desalination module 100 and the first water outlet 220 side of the dual-channel desalination module 200, respectively, and the conductivity of the water discharged from the single-channel desalination module 100 and the conductivity of the water discharged from the dual-channel desalination module 200 may be detected by the conductivity detection module 10, so as to determine whether the water purification effect of the single-channel desalination module 100 and the dual-channel desalination module 200 can meet the requirement.

Specifically, when the conductivity data detected by the conductivity detection assembly 10 on the second port 120 side of the single channel desalination assembly 100 is not less than the target conductivity, it can be determined that the single channel desalination assembly 100 requires regeneration processing. When the conductivity data detected by the conductivity detection assembly 10 on the first outlet side of the dual-channel desalination assembly 200 is not less than the target conductivity, it can be determined that the dual-channel desalination assembly 200 requires regeneration processing.

For example, when the duration of the time that the conductivity data detected by the conductivity detection assembly 10 on the second port 120 side of the single-channel desalination assembly 100 or the conductivity detection assembly 10 on the first water outlet 220 side of the dual-channel desalination assembly 200 is not less than the target conductivity exceeds a preset time period, such as 10 hours, it can be determined that the regeneration process is required for the single-channel desalination assembly 100 or the dual-channel desalination assembly 200.

In some embodiments, as shown in fig. 5, the control module 410 is connected to the conductivity detection module 10, the power module 420 and the waterway switching device 350, and the power module 420 is connected to the single channel desalination module 100. The control component 410 may include, for example, a single chip microcomputer or the like.

Illustratively, the control module 410 controls the power supply module 420 to cut off power to the single channel desalination module 100 or to apply a reverse voltage to the single channel desalination module 100 while controlling the waterway switching device 350 to tangentially connect to the third pipeline 330 when the conductivity data detected by the conductivity detection module 10 at the second port side of the single channel desalination module 100 is not less than the target conductivity. Such that salt ions attached to the single-channel desalination assembly 100 enter the water and exit the single-channel desalination assembly 100 with the water, and the flushed wastewater exits the first port 110 of the single-channel desalination assembly 100 into the third conduit 330.

In some embodiments, as shown in fig. 1 and 2, a conductivity detection assembly 10 may be further disposed on the first pipeline 310, and the conductivity detection assembly 10 may be capable of detecting the quality of the water to be purified.

Illustratively, the conductivity detection module 10 is coupled to the control module 410. The control module 410 can control the power supply module 420 to adjust the power supply voltage to the single channel desalination module 100 based on the conductivity data detected by the conductivity detection module 10 in the first conduit 310. For example, the greater the conductivity data detected by the conductivity detection assembly 10 on the first conduit 310, the greater the voltage of the forward voltage applied by the power supply assembly 420 to the single channel desalination assembly 100 to enhance the effectiveness of the purification process.

In some embodiments, as shown in fig. 1 and 2, a flow detection assembly 30 may be further disposed on the first pipeline 310 and/or the second pipeline 320, and the flow detection assembly 30 is connected to the control assembly 410.

In some embodiments, the conductivity detection assembly 10 is disposed on the third conduit 330. When the single-channel desalination assembly 100 is de-energized or a reverse voltage is applied to the single-channel desalination assembly 100, the control assembly 410 determines the effectiveness of regeneration of the single-channel desalination assembly 100 based on the conductivity data detected by the conductivity detection assembly 10 in the third line 330.

Illustratively, water after flushing the single channel desalination assembly 100 can be drained through the third line 330, during which the conductivity detection assembly 10 on the third line 330 can detect conductivity data of the water after flushing the single channel desalination assembly 100. When the conductivity data is less than the predetermined conductivity, it can be determined that the saline flush in the single channel desalination assembly 100 is complete, the regeneration mode can be terminated, such as resuming the application of positive voltage to the single channel desalination assembly 100, and the waterway switching device 350 can be controlled to switch tangentially to the first pipeline 310.

In some embodiments, the household water purifying apparatus further includes a raw water tank capable of storing water, and one end of the first pipe 310 is connected to the raw water tank, and the other end is connected to the first port 110 and the first water inlet 210.

Illustratively, the raw water tank comprises a transparent shell or a transparent window is arranged on the shell, so that a user can conveniently check the water quality, the water level and the like in the raw water tank.

For example, the raw water tank may further include a water injection port through which water to be purified may be added into the raw water tank. For example, the water filling port is connected with a tap water pipe. In an exemplary embodiment, the raw water tank is further provided with a liquid level meter, and when the liquid level in the raw water tank drops to a set value, the raw water tank can control a valve of the tap water pipe to open to feed water to a water feeding port of the raw water tank.

For example, the water stored in the raw water tank may flow into the single-channel desalination module 100 and the dual-channel desalination module 200 through the first pipe 310, the inflow water is purified when the single-channel desalination module 100 applies a positive voltage, and the purified water is output through the second pipe 320.

It is understood that one end of the first pipeline 310 may also be directly connected to the tap water pipe, and the other end is connected to the first port 110 and the first water inlet 210 which are connected in parallel.

The domestic water purifying device provided by the above embodiment of the present specification comprises a single-channel desalination assembly and a double-channel desalination assembly, which are arranged in parallel, wherein the single-channel desalination assembly comprises a first port and a second port, the double-channel desalination assembly comprises a first water inlet and a first water outlet, the first port is connected in parallel with the first water inlet, and the second port is connected in parallel with the first water outlet; the pipeline system comprises a first pipeline, a second pipeline and a third pipeline, wherein the first pipeline is connected with a first port and a first water inlet, the second pipeline is connected with a second port and a first water outlet, and the third pipeline is connected with the first port; the double-flow-channel desalting component purifies the water flowing in through the first water inlet, the generated pure water flows into the single-flow-channel desalting component through the first water outlet and the second port, and salt substances in the single-flow-channel desalting component flow into the third pipeline through the first port after being washed by the flowing pure water. The pure water generated by the purification treatment of the double-flow-channel desalting component washes and regenerates the single-flow-channel desalting component, so that the scaling risk during the regeneration of the single-flow-channel desalting component is reduced, and the water quality of the prepared pure water is guaranteed.

In the description of the embodiments of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the embodiments of the present invention.

Furthermore, the terms "first", "first" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "first" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In embodiments of the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the first feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, a first feature being "on," "over," and "above" a first feature includes the first feature being directly above and obliquely above the first feature, or simply means that the first feature is higher in level than the first feature. A first feature being "under," "below," and "beneath" a first feature includes the first feature being directly under and obliquely below the first feature, or simply meaning that the first feature is at a lesser elevation than the first feature.

While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.