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

a plurality of single-channel desalination assemblies arranged in parallel, wherein each single-channel desalination assembly comprises a first port and a second port;

a piping system comprising a plurality of first, second, third, and fourth piping connected in parallel, wherein said first port of each said single channel desalination assembly is connected to one said first piping and one said fourth piping, and said second port of each said single channel desalination assembly is connected to one said second piping and one said third piping;

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

when the single-channel desalination assembly is de-energized or a reverse voltage is applied, the saline in the single-channel desalination assembly is flushed to the fourth line by the water flowing in through the second line, the second port.

2. The domestic water purification apparatus of claim 1, wherein said second ports of a plurality of said single-channel desalination modules are connected in parallel, wherein upon application of a forward voltage to a first single-channel desalination module and de-energizing or applying a reverse voltage to a second single-channel desalination module, said first single-channel desalination module purifies incoming water, wherein the treated water flows into said second port of said second single-channel desalination module, and wherein saline in said second single-channel desalination module is flushed by purified water from said first single-channel desalination module to said fourth line.

3. 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.

4. The domestic water purification apparatus of claim 3, 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.

5. The domestic water purification apparatus of claim 1, further comprising a power supply module, wherein said power supply module is connected to a plurality of said single-channel desalination modules.

6. The household water purifying device of claim 5, further comprising a control assembly, wherein the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are all provided with electromagnetic valves, and the control assembly is connected with the power supply assembly and the electromagnetic valves.

7. The domestic water purification apparatus of claim 6, wherein the control module controls the power supply module to turn off power to the single-channel desalination module or to apply a reverse voltage to the single-channel desalination module, and controls the solenoid valves on the second and fourth lines to which the single-channel desalination module is connected, and the solenoid valves on the first and third lines to which the single-channel desalination module is connected, to turn off.

8. The domestic water purification apparatus of claim 6, wherein said control module controls said power supply module to apply a positive voltage to said single-channel desalination module, and controls said solenoid valves on said first and third lines to which said single-channel desalination module is connected to open, and said solenoid valves on said second and fourth lines to which said single-channel desalination module is connected to close.

9. The domestic water purification apparatus of any one of claims 1-8, wherein said pipe system further comprises a water inlet pipe connecting each of said first and second pipes, a water outlet pipe connecting each of said third pipes, and a filter assembly provided on said water inlet pipe and/or a filter assembly provided on said water outlet pipe.

10. The domestic water purification device of claim 9, 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.

11. The domestic water purification apparatus of claim 9, wherein said conduit system further comprises a drive assembly disposed on said water inlet conduit, said drive assembly driving water flow to said single-channel desalination assembly.

12. The domestic water purification apparatus of claim 9, wherein said conduit system further comprises a conductivity detection assembly disposed on said water inlet conduit and/or a conductivity detection assembly disposed on said water outlet conduit.

13. The domestic water purification apparatus of claim 9, wherein said outlet pipe has a plurality of branches connected to the outlet direction, and at least one of said branches 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 use, the reverse osmosis membrane needs to be replaced or cleaned, and when the reverse osmosis membrane is replaced or cleaned, water cannot be purified, and pure water cannot be continuously produced.

Disclosure of Invention

The embodiment of the application provides a domestic purifier, adopts a plurality of single-channel desalination subassemblies that connect in parallel, and every single-channel desalination subassembly independently works, and when wherein at least one single-channel desalination subassembly washed regeneration, can carry out the water purification through at least one single-channel desalination subassembly in addition to realize producing the pure water in succession.

The application provides a domestic purifier, domestic purifier includes:

a plurality of single-channel desalination assemblies arranged in parallel, wherein each single-channel desalination assembly comprises a first port and a second port;

a piping system comprising a plurality of first, second, third, and fourth piping connected in parallel, wherein said first port of each said single channel desalination assembly is connected to one said first piping and one said fourth piping, and said second port of each said single channel desalination assembly is connected to one said second piping and one said third piping;

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

when the single-channel desalination assembly is de-energized or a reverse voltage is applied, the saline in the single-channel desalination assembly is flushed to the fourth line by the water flowing in through the second line, the second port.

Illustratively, the second ports of the plurality of single-channel desalination assemblies are connected in parallel, and when a forward voltage is applied to the first single-channel desalination assembly and a second single-channel desalination assembly is de-energized or a reverse voltage is applied to the second single-channel desalination assembly, the first single-channel desalination assembly purifies the incoming water, the treated water flows into the second port of the second single-channel desalination assembly, and the saline in the second single-channel desalination assembly is flushed to the fourth pipeline by the purified water from the first single-channel desalination assembly.

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 water purification device further comprises a power supply assembly, and the power supply assembly is connected with a plurality of the single-channel desalination assemblies.

Exemplarily, domestic purifier still includes control assembly, first pipeline, the second pipeline, the third pipeline with all be equipped with the solenoid valve on the fourth pipeline, control assembly connects power supply unit with the solenoid valve.

Illustratively, the control module controls the power supply module to cut off power supply to the single-channel desalination module or applies a reverse voltage to the single-channel desalination module, and controls the solenoid valves on the second pipeline and the fourth pipeline correspondingly connected to the single-channel desalination module to be opened, and the solenoid valves on the first pipeline and the third pipeline correspondingly connected to the single-channel desalination module to be closed.

For example, the control component controls the power supply component to apply a forward voltage to the single-channel desalination component, and controls the solenoid valves on the first pipeline and the third pipeline, which are correspondingly connected to the single-channel desalination component, to be opened, and the solenoid valves on the second pipeline and the fourth pipeline, which are correspondingly connected to the single-channel desalination component, to be closed.

Illustratively, the pipeline system further comprises a water inlet pipeline connecting each first pipeline and each second pipeline, a water outlet pipeline connecting each third pipeline, and a filter assembly arranged on the water inlet pipeline and/or a filter assembly arranged on the water outlet pipeline.

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 piping system further comprises a drive assembly disposed on the water inlet pipe, the drive assembly driving water flow to the single-channel desalination assembly.

Illustratively, the pipeline system further comprises a conductivity detection component arranged on the water inlet pipeline and/or a conductivity detection component arranged on the water outlet pipeline.

Illustratively, the water outlet direction of the water outlet pipeline is connected with a plurality of branches, and at least one branch is provided with a heating unit.

The application discloses domestic purifier includes: a plurality of single-channel desalination assemblies arranged in parallel, wherein each single-channel desalination assembly comprises a first port and a second port; the pipeline system comprises a plurality of first pipelines, second pipelines, third pipelines and fourth pipelines which are connected in parallel, wherein a first port of each single-channel desalting component is connected with one first pipeline and one fourth pipeline, and a second port of each single-channel desalting component is connected with one second pipeline and one third pipeline; when positive voltage is applied to the single-channel desalination assembly, purifying the water flowing in through the first pipeline and the first port, and enabling the treated water to flow out to the third pipeline through the second port; when the single-channel desalination assembly is de-energized or a reverse voltage is applied, the saline in the single-channel desalination assembly is flushed to the fourth line by the water flowing in through the second line and the second port. The plurality of single-channel desalination components are connected in parallel and independently work, and when at least one single-channel desalination component is washed and regenerated, water can be purified through at least one other single-channel desalination component, so that continuous production of pure water is realized.

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 diagram of a bipolar membrane electrodeionization cartridge desalination process;

FIG. 3 is a schematic diagram of the bipolar membrane electrodeionization filter regeneration process;

FIG. 4 is a schematic view showing the connection relationship of the parts in the household water purifying apparatus;

fig. 5 is a schematic structural diagram of an embodiment of a household water purifying device.

Reference numerals: 100. a single-channel desalination assembly; 110. a first port; 120. a second port; 200. a piping system; 210. a first pipeline; 220. a second pipeline; 230. a third pipeline; 240. a fourth pipeline; 250. an electromagnetic valve; 260. a water inlet pipeline; 270. a water outlet pipeline; 280. a pressure reducing valve; 290. a filter assembly; 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 pipeline system 200, which are arranged in parallel.

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.

Specifically, the pipe system 200 includes a plurality of parallel first pipes 210, second pipes 220, third pipes 230, and fourth pipes 240. Wherein the first port 110 of each single-channel desalination assembly 100 is connected to a first line 210 and a fourth line 240, and the second port 120 of each single-channel desalination assembly 100 is connected to a second line 220 and a third line 230.

A first line 210 is used to deliver water to the first port 110, a second line 220 is used to deliver water to the second port 120, a third line 230 is used to output water purified by the single channel desalination assembly 100, and a fourth line 240 is used to output wastewater generated by the single channel desalination assembly 100 that is flushed for regeneration.

During the water purification treatment of the single-channel desalination assembly 100, a forward voltage is applied to the single-channel desalination assembly 100, the water flowing in through the first pipe 210 connected to the single-channel desalination assembly 100 and the first port 110 of the single-channel desalination assembly 100 is purified, and the treated water flows out through the second port 120 of the single-channel desalination assembly 100 to the third pipe 230 connected to the single-channel desalination assembly 100.

It is to be understood that the single-channel desalination assembly 100 uses only one water inlet (first port 110) and one water outlet (second port 120) for purifying water flowing therethrough, and thus may be referred to as a single-channel desalination assembly.

The single channel desalination module 100 may not discharge wastewater when purifying water flowing therethrough. By using the single-channel desalination assembly for water purification, water entering the single-channel desalination assembly 100 can be discharged from the water outlet (the second port 120) and purified, and no wastewater is generated in the process, thereby improving the utilization rate of water. And, the water purification can be simultaneously performed by the plurality of single channel desalination modules 100 connected in parallel, and the amount of the pure water generated is large.

During the regeneration of the single-channel desalination assembly 100 by flushing, the single-channel desalination assembly 100 is de-energized or a reverse voltage is applied, and the saline in the single-channel desalination assembly 100 is flushed by the water flowing through the second line 220 connected to the single-channel desalination assembly 100, the second port 120 of the single-channel desalination assembly 100, and the fourth line 240 connected to the single-channel desalination assembly 100.

For example, two parallel single-channel desalination modules 100 are illustrated, wherein the first single-channel desalination module 100 performs a flushing regeneration and the second single-channel desalination module 100 performs a water purification. Specifically, the first single-channel desalination assembly 100 is de-energized or reverse-energized, and the saline in the first single-channel desalination assembly 100 is flushed through the second line 220 connected thereto and the second port 120 of the first single-channel desalination assembly 100 to the fourth line 240 connected thereto. While applying a positive voltage to the second single-channel desalination module 100, the water flowing in through the first line 210 connected to the second single-channel desalination module 100 and the first port 110 of the second single-channel desalination module 100 is purified, and the treated water flows out through the second port 120 of the second single-channel desalination module 100 to the third line 230 connected to the second single-channel desalination module 100. Therefore, when the first single-channel desalination component 100 is washed and regenerated, the second single-channel desalination component 100 can purify water to generate pure water, and the domestic water purification device can continuously produce water.

Illustratively, to achieve uninterrupted water production in a domestic water purification device, the plurality of single-channel desalination assemblies 100 are not flushed and regenerated simultaneously, and when at least one of the single-channel desalination assemblies 100 is flushed and regenerated, the purification treatment is performed by another at least one single-channel desalination assembly 100 to produce pure water.

Illustratively, the total power of regeneration of the single-channel desalination assembly 100 of the domestic water purification device is controlled within 2000W, preferably within 200W-1000W.

Illustratively, a single-channel desalination module 100 can be regenerated by using raw tap water from the second pipeline 220 as the feed water, or by using purified water from other single-channel desalination modules 100 as the feed water. Specifically, the second ports of the plurality of single-channel desalination elements 100 are connected in parallel, and when the water purified by one of the single-channel desalination elements 100 is used as the feed water to regenerate another single-channel desalination element 100, for convenience of description, the regenerated single-channel desalination element 100 will be referred to as a first single-channel desalination element, and the purified single-channel desalination element 100 will be referred to as a second single-channel desalination element. When forward voltage is applied to the first single-channel desalination assembly, and the second single-channel desalination assembly is powered off or reverse voltage is applied to the second single-channel desalination assembly, the first single-channel desalination assembly purifies inflow water, the treated water flows into the second single-channel desalination assembly through the second port 120 of the first single-channel desalination assembly connected in parallel, the second port 120 of the second single-channel desalination assembly flows into the second single-channel desalination assembly, and salt substances in the second single-channel desalination assembly are washed to the fourth pipeline 240 by water purified by the first single-channel desalination assembly, so that regeneration of the second single-channel desalination assembly is realized.

In some embodiments, the single-channel desalination assembly 100 comprises a physisorption desalination cartridge and/or a chemisorption desalination 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.

Specifically, as shown in fig. 2 and 3, a schematic diagram of a structure of a bipolar membrane electrodeionization filter cartridge 900 is shown.

As shown in fig. 2 and 3, 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. 2 and 3, 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. 2 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. 3, 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. 4, the domestic water purification apparatus may further include a power supply assembly 420, wherein the power supply assembly 420 is connected to the plurality of single-channel desalination assemblies 100, for example, to an electrically driven single-channel desalination cartridge to supply power to the electrically driven single-channel desalination cartridge.

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.

Illustratively, after the single-channel desalination assembly 100 has been in operation for a certain period of time, more salts are adsorbed during the water purification process, and the single-channel desalination assembly 100 needs to be regenerated.

In some embodiments, the single channel desalination assembly 100 can be powered off or a reverse voltage applied to the single channel desalination assembly 100 to enable the saline in the single channel desalination assembly 100 to be flushed by the water flowing from the second port 120 of the single channel desalination assembly 100 to the fourth line 240 to which the single channel desalination assembly 100 is connected.

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 first, second, third and fourth pipes 210, 220, 230 and 240 are provided with a solenoid valve 250, and as shown in fig. 4, the household water purifying apparatus further comprises a control module 410, the control module 410 is connected to a power supply module 420 and the solenoid valve 250, 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 an input device, such as a user pressing an effluent button, or utters a voice including an effluent command, the power supply module 420 is controlled to apply a forward voltage to the corresponding at least one single-channel desalination module 100 according to the detected effluent control operation, and the solenoid valves 250 of the first and third pipelines 210 and 230 to which the at least one single-channel desalination module 100 is correspondingly connected are controlled to be opened, and the solenoid valves 250 of the second and fourth pipelines 220 and 240 to which the at least one single-channel desalination module 100 is correspondingly connected are controlled to be closed, so that pure water purified by the at least one single-channel desalination module 100 can be output.

In some embodiments, the control component 410 switches different single channel desalination components 100 to regeneration modes at different time periods. Specifically, when switching at least one single-channel desalination module 100 to the regeneration mode, the control module 410 controls the power supply module 420 to cut off power to the at least one single-channel desalination module 100 or to apply a reverse voltage to the at least one single-channel desalination module 100, and controls the solenoid valves 250 on the second and fourth lines 220 and 240 to which the at least one single-channel desalination module 100 is correspondingly connected to be open, and the solenoid valves 250 on the first and third lines 210 and 230 to which the at least one single-channel desalination module 100 is correspondingly connected to be closed. Such that salt ions attached to the at least one 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 and the fourth line 240 of the at least one single-channel desalination assembly 100.

In some embodiments, as shown in FIG. 5, the tubing system 200 further includes a water inlet line 260 connecting each of the first and second tubing lines 210, 220, a water outlet line 270 connecting each of the third tubing lines 230, and a pressure relief valve 280 disposed on the water inlet line 260.

Illustratively, the pressure reducing valve 280 includes a plurality of pressure reducing valves 280 connected in series. For example, two pressure reducing valves 280 are connected in series, the pressure reducing valve 280 connected in series is 2.5kg, the pressure reducing valve 280 connected in series is 1.5kg, the initial water pressure P0 is reduced to P1 by the pressure reducing valve 280 connected in series, and the P1 is reduced to the target water pressure Pn by the pressure reducing valve 280 connected in series.

In some embodiments, as shown in FIG. 5, the tubing system 200 further includes a filter assembly 290 disposed on the inlet line 260 and/or a filter assembly 290 disposed on the outlet line 270.

Illustratively, the filter assembly 290 may 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%. The filter assembly 290 in the inlet line 260 may be capable of purifying the water entering the single-channel desalination assembly 100 to a certain extent, for example, to remove the water that may contain particulate impurities, residual chlorine, etc., thereby reducing the workload and consumption of the single-channel desalination assembly 100 and prolonging the regeneration cycle and service life thereof. The filter assembly 290 on the outlet pipe 270 can further improve the quality of the purified water output from the household water purification apparatus.

In some embodiments, as shown in FIG. 5, the conduit system 200 further comprises a drive assembly 20 disposed on the water inlet conduit 260, the drive assembly 20 driving water to the single channel desalination assembly 100.

Illustratively, the drive assembly 20 may comprise a self-priming pump. When the single-channel desalination assembly 100 is in operation, the driving assembly 250 drives water to flow to the single-channel desalination assembly 100, which can increase the flow rate of the discharged water and avoid long waiting time when a user receives water.

In some embodiments, the outlet direction of the outlet pipe 270 may be further connected to a heating unit, for example, a heat exchanger. The heating unit may heat the water flowing from the water outlet line 270 to provide the user with hot water at a desired temperature.

Illustratively, the water outlet direction of the water outlet pipeline 270 is connected with a plurality of branches, and at least one branch is provided with a heating unit.

In some embodiments, as shown in FIG. 5, a temperature sensing assembly 40 may also be provided on the water inlet line 260, the temperature sensing assembly 40 being used to sense the temperature of the water flowing to the single channel desalination assembly 100.

In some embodiments, as shown in fig. 5, the tubing system 200 further comprises a conductivity detection assembly 10 disposed on the water inlet line 260 and/or a conductivity detection assembly 10 disposed on the water outlet line 270, or a conductivity detection assembly 10 disposed on the third line 230. 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.

By detecting the conductivity of the effluent at the effluent side of the single channel desalination assembly 100, it can be determined whether the water purification effectiveness of the single channel desalination assembly 100 can meet the requirements.

Specifically, when the conductivity data detected by the conductivity detection module 10 in a third line 230 is not less than the target conductivity, it can be determined that the single-channel desalination module 100 connected to the third line 230 needs regeneration.

For example, when the duration of the conductivity data detected by the conductivity detection module 10 in a certain third pipeline 230 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 module 100 connected to the certain third pipeline 230.

In some embodiments, as shown in fig. 4, the control module 410 is connected to the conductivity detection module 10, the power module 420 and the solenoid valve 250, 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, when the conductivity data detected by the conductivity detection module 10 on a certain third pipeline 230 is not less than the target conductivity, the control module 410 controls the power supply module 420 to cut off the power supply to the single-channel desalination module 100 correspondingly connected to the third pipeline 230 or to apply a reverse voltage to the single-channel desalination module 100, and controls the solenoid valves 250 on the second pipeline 220 and the fourth pipeline 240 correspondingly connected to the single-channel desalination module 100 to be opened, and the solenoid valves 250 on the first pipeline 210 and the third pipeline 230 correspondingly connected to the single-channel desalination module 100 to be closed. Such that the 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 and the fourth line 240 of the single-channel desalination assembly 100.

In some embodiments, as shown in FIG. 5, a conductivity detection assembly 10 may also be disposed on the water inlet line 260, and the conductivity detection assembly 10 is capable of detecting the quality of the water requiring purification treatment by the single channel desalination assembly 100.

Illustratively, the conductivity detection module 10 is coupled to the control module 410. The control module 410 may 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 on the water inlet line 260. For example, the greater the conductivity data detected by the conductivity detection assembly 10 on the water inlet line 260, 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. 5, a flow detection assembly 30 may be further disposed on the third pipe 230 and/or the water outlet pipe 270, and the flow detection assembly 30 is connected to the control assembly 410.

Illustratively, the control component 410 can determine a consumption value of the single channel desalination assembly 100 to which the third line 230 is correspondingly connected based on the conductivity data detected by the conductivity detection component 10 on the water inlet line 260, the conductivity data detected by the conductivity detection component 10 on the third line 230, and the flow data detected by the flow detection component 30 on the third line 230. For example, the desalination throughput of the single channel desalination assembly 100 can be determined from conductivity data of the water flowing into the single channel desalination assembly 100 and conductivity data of the water flowing out of the single channel desalination assembly 100, and as the flow rates of the water processed by the single channel desalination assembly 100 accumulate, the total amount of adsorbed salt species in the single channel desalination assembly 100 can be determined, which can represent the consumption value of the single channel desalination assembly 100.

Illustratively, the control module 410 is capable of controlling the power supply module 420 to de-energize the single-channel desalination module 100 or to apply a reverse voltage to the single-channel desalination module 100 when the consumption value is not less than the consumption threshold, and simultaneously controlling the solenoid valves 250 on the second and fourth lines 220, 240 to which the single-channel desalination module 100 is correspondingly connected to open and the solenoid valves 250 on the first and third lines 210, 230 to which the single-channel desalination module 100 is correspondingly connected to close.

For example, when the salt absorption capacity of the single-channel desalination assembly 100 is Q, the depletion threshold can be determined to be 0.75Q; when the cumulative consumption value of the single-channel desalination assembly 100 reaches the consumption threshold, the single-channel desalination assembly 100 is switched to a regeneration mode, and the single-channel desalination assembly 100 is regenerated to restore the salt absorption capacity of the single-channel desalination assembly 100.

When the regeneration mode is switched, the control module 410 controls the power supply module 420 to apply a reverse voltage to the single-channel desalination module 100 so that the salt ions attached to the single-channel desalination module 100 enter the water and exit the single-channel desalination module 100 along with the water, and the control module 410 controls the solenoid valves 250 on the second and fourth pipelines 220 and 240 respectively connected to the single-channel desalination module 100 to be opened, and the solenoid valves 250 on the first and third pipelines 210 and 230 respectively connected to the single-channel desalination module 100 to be closed so that the flushed wastewater exits from the first and fourth ports 110 and 240 of the single-channel desalination module 100.

In some embodiments, the conductivity detection assembly 10 is disposed on the fourth conduit 240. 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 regeneration effect of the single-channel desalination assembly 100 based on the conductivity data detected by the conductivity detection assembly 10 on the fourth line 240.

Illustratively, water after flushing the single channel desalination assembly 100 can be discharged through the fourth line 240, during which the conductivity detection assembly 10 on the fourth line 240 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, and the regeneration mode can be terminated, for example, by resuming the application of the forward voltage to the single-channel desalination assembly 100, and by controlling the solenoid valves 250 on the first and third lines 210 and 230 to which the single-channel desalination assembly 100 is correspondingly connected to be open, and the solenoid valves 250 on the second and fourth lines 220 and 240 to which the single-channel desalination assembly 100 is correspondingly connected to be closed.

Illustratively, the control component 410 can determine the regeneration effectiveness of the single channel desalination assembly 100 based on the conductivity data detected by the conductivity detection component 10 and the flow rate data detected by the flow rate detection component 30 in the third conduit 230. The amount of salt released by flushing the single-channel desalination assembly 100 during regeneration may thus be determined, and the regeneration mode may be terminated, for example, when the amount of released salt reaches a predetermined release threshold, such as 80% -150% of the salt absorption capacity Q.

In some embodiments, the household water purifying apparatus further includes a raw water tank capable of storing water, and the water inlet line 260 has one end connected to the raw water tank and the other end connected to the first line 210 and the second line 220 which are connected in parallel.

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 each of the single-channel desalination modules 100 through the water inlet line 260, and when a positive voltage is applied to at least one of the single-channel desalination modules 100, the water flowing in is purified, and the purified water is output through the third line 230.

It is understood that one end of the water inlet line 260 may also be directly connected to the tap water pipe, and the other end is connected to the first line 210 and the second line 220 which are connected in parallel.

In some embodiments, the domestic water purification apparatus further comprises a waste water tank, and one end of the fourth line 240 is connected to the first port 110 of the single channel desalination assembly 100, and the other end is connected to the waste water tank. The wastewater after flushing the single channel desalination assembly 100 can be discharged to a wastewater tank connected to the fourth line 240.

The domestic water purification device provided by the above embodiments of the present specification comprises a plurality of single-channel desalination assemblies arranged in parallel, wherein each single-channel desalination assembly comprises a first port and a second port; the pipeline system comprises a plurality of first pipelines, second pipelines, third pipelines and fourth pipelines which are connected in parallel, wherein a first port of each single-channel desalting component is connected with one first pipeline and one fourth pipeline, and a second port of each single-channel desalting component is connected with one second pipeline and one third pipeline; when positive voltage is applied to the single-channel desalination assembly, purifying the water flowing in through the first pipeline and the first port, and enabling the treated water to flow out to the third pipeline through the second port; when the single-channel desalination assembly is de-energized or a reverse voltage is applied, the saline in the single-channel desalination assembly is flushed to the fourth line by the water flowing in through the second line and the second port. The plurality of single-channel desalination components are connected in parallel and independently work, and when at least one single-channel desalination component is washed and regenerated, water can be purified through at least one other single-channel desalination component, so that continuous production of pure water is realized.

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.