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

the water tank comprises a first water tank and a second water tank, wherein the capacity of the first water tank is larger than that of the second water tank, the first water tank comprises a first water outlet and a first water inlet, and the second water tank comprises a second water inlet;

the single-channel desalting component comprises a third water inlet and a third water outlet, the water flowing in from the third water inlet is purified, and the treated water flows out from the third water outlet;

a pipe system including a first pipe connected between the first water outlet and the third water inlet, a second pipe connected between the third water outlet and the first water inlet, and a third pipe connected between the second water inlet and the second pipe;

the second pipeline is connected with the third pipeline through a first three-way valve, the second water tank is provided with a liquid level meter, and when the liquid level of the second water tank is lower than a preset water level, the first three-way valve enables water flowing out of the third water outlet to enter the second water tank through the third pipeline.

2. The domestic water purification apparatus of claim 1, wherein said second tank further comprises a second water outlet; the pipeline system also comprises a fourth pipeline connected between the second water outlet and the third water inlet, and a first conductivity detection assembly is arranged on the second water tank and/or the fourth pipeline;

when the conductivity data of the water in the second water tank does not reach the target conductivity, the second water outlet is communicated with the third water inlet so that the water in the second water tank is purified by the single-channel desalination assembly, and the first three-way valve enables the water flowing out of the third water outlet to enter the second water tank through the third pipeline.

3. The domestic water purification apparatus of claim 2, wherein when the level of the second water tank is not below a predetermined level and the conductivity data of the water in the second water tank reaches a target conductivity, the second water outlet and the third water inlet are not in communication, and the water in the first water tank flows through the first conduit to the single channel desalination assembly and the water from the third water outlet enters the first water tank through the second conduit.

4. The domestic water purification apparatus of claim 2 or 3, wherein at least one of said first conduit, said fourth conduit, and a junction between said first conduit and said fourth conduit is provided with a valve, said valve communicating said second water outlet with said third water inlet when water in said second water tank is purified by said single-channel desalination assembly.

5. The domestic water purification apparatus of claim 4, wherein the valve in the first conduit and/or the valve at the junction of the first conduit and the fourth conduit is such that the first water outlet is not in communication with the third water inlet when the water in the second water tank is purified by the single-channel desalination assembly.

6. A domestic water purification device as claimed in claim 2 or 3, wherein a water receiving outlet is provided on the second tank and/or the fourth pipe;

at least one of the first pipeline, the second pipeline, the third pipeline and the fourth pipeline is provided with a driving assembly.

7. A domestic water purification device as claimed in claim 2 or 3, wherein at least one of the first, second, third and fourth pipes is provided with a filter assembly;

the filter assembly comprises a PP cotton filter element and/or an activated carbon filter element.

8. The domestic water purification apparatus of any one of claims 1-3, wherein the single-channel desalination assembly comprises a physisorption desalination cartridge and/or a chemisorption desalination cartridge.

9. The domestic water purification apparatus of claim 8, 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.

10. The domestic water purification apparatus of any one of claims 1-3, wherein the single channel desalination module is configured to purify water flowing therethrough when powered in the first direction; when the single-channel desalination assembly is powered in a second direction opposite to the first direction, the flowing water cleans the single-channel desalination assembly; or

The single-channel desalination assembly includes a housing and a filter element removably received within an interior of the housing.

11. The domestic water purification apparatus of claim 6, wherein said water receiving outlet 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. During the treatment process, substances such as bacteria, viruses, scale, salt ions and the like which do not pass through the reverse osmosis membrane form concentrated water to be discharged. The prior common reverse osmosis membrane generates more concentrated water during purification and is not high in water utilization rate.

Disclosure of Invention

The embodiment of the application provides a domestic purifier, adopts the desalination subassembly of single current way to carry out the water purification, and the water that gets into single current way desalination subassembly can be followed the delivery port and discharged, obtains purification treatment simultaneously, does not produce waste water at this in-process, has improved the utilization ratio of water.

The application provides a domestic purifier, domestic purifier includes:

the water tank comprises a first water tank and a second water tank, wherein the capacity of the first water tank is larger than that of the second water tank, the first water tank comprises a first water outlet and a first water inlet, and the second water tank comprises a second water inlet;

the single-channel desalting component comprises a third water inlet and a third water outlet, the water flowing in from the third water inlet is purified, and the treated water flows out from the third water outlet;

a pipe system including a first pipe connected between the first water outlet and the third water inlet, a second pipe connected between the third water outlet and the first water inlet, and a third pipe connected between the second water inlet and the second pipe;

the second pipeline is connected with the third pipeline through a first three-way valve, the second water tank is provided with a liquid level meter, and when the liquid level of the second water tank is lower than a preset water level, the first three-way valve enables water flowing out of the third water outlet to enter the second water tank through the third pipeline.

Illustratively, the second water tank further comprises a second water outlet; the pipeline system also comprises a fourth pipeline connected between the second water outlet and the third water inlet, and a first conductivity detection assembly is arranged on the second water tank and/or the fourth pipeline;

when the conductivity data of the water in the second water tank does not reach the target conductivity, the second water outlet is communicated with the third water inlet so that the water in the second water tank is purified by the single-channel desalination assembly, and the first three-way valve enables the water flowing out of the third water outlet to enter the second water tank through the third pipeline.

For example, when the liquid level of the second water tank is not lower than the preset water level and the conductivity data of the water in the second water tank reaches the target conductivity, the second water outlet and the third water inlet are not communicated, and the water in the first water tank flows to the single channel desalination assembly through the first pipeline and the water flowing out of the third water outlet enters the first water tank through the second pipeline.

For example, at least one of the first pipeline, the fourth pipeline, and a joint of the first pipeline and the fourth pipeline is provided with a valve, and when the water in the second water tank is purified by the single-channel desalination assembly, the valve communicates the second water outlet with the third water inlet.

For example, when the water in the second water tank is purified by the single-channel desalination assembly, the valve on the first pipeline and/or the valve at the connection between the first pipeline and the fourth pipeline make the first water outlet not communicate with the third water inlet.

For example, a water receiving outlet is arranged on the second water tank and/or the fourth pipeline;

at least one of the first pipeline, the second pipeline, the third pipeline and the fourth pipeline is provided with a driving assembly.

Illustratively, at least one of the first pipeline, the second pipeline, the third pipeline and the fourth pipeline is provided with a filtering component;

the filter assembly comprises a PP cotton filter element and/or an activated carbon filter element.

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, when the single-channel desalination assembly is powered in a first direction, the single-channel desalination assembly purifies water flowing through the single-channel desalination assembly; when the single-channel desalination assembly is powered in a second direction opposite to the first direction, the flowing water cleans the single-channel desalination assembly; or

The single-channel desalination assembly includes a housing and a filter element removably received within an interior of the housing.

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

The application discloses domestic purifier includes: the water tank comprises a first water tank and a second water tank, wherein the capacity of the first water tank is larger than that of the second water tank, the first water tank comprises a first water outlet and a first water inlet, and the second water tank comprises a second water inlet; the single-channel desalting component comprises a third water inlet and a third water outlet, and is used for purifying water flowing in from the third water inlet and enabling the treated water to flow out from the third water outlet; the pipeline system comprises a first pipeline connected between the first water outlet and the third water inlet, a second pipeline connected between the third water outlet and the first water inlet, and a third pipeline connected between the second water inlet and the second pipeline; the second pipeline and the third pipeline are connected through a first three-way valve, the second water tank is provided with a liquid level meter, and when the liquid level of the second water tank is lower than a preset water level, the first three-way valve enables water flowing out of the third water outlet to enter the second water tank through the third pipeline. The water flowing through the single-channel desalting component is purified, so that no waste water is discharged, and the utilization rate of the water is improved; and the pipeline system can deliver the water in the first water tank with larger capacity to the second water tank with smaller capacity after being purified by the single-channel desalting component, so that a user can conveniently obtain the purified water as soon as possible, and the waiting time is shortened.

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 structural diagram of an embodiment of a household water purifying device.

Reference numerals: 100. a first water tank; 110. a first water outlet; 120. a first water inlet; 200. a second water tank; 210. a second water inlet; 220. a second water outlet; 300. a single-channel desalination assembly; 310. a third water inlet; 320. a third water outlet;

400. a piping system; 410. a first pipeline; 420. a second pipeline; 430. a third pipeline; 440. a fourth pipeline; 401. a first three-way valve; 402. a valve; 403. a drive assembly; 404. a filter assembly;

10. a liquid level meter; 20. a first conductivity detection assembly; 30. a water outlet; 40. a second conductivity detection component;

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 first water tank 100, a second water tank 200, a single channel desalination module 300, and a pipeline system 400.

Wherein the capacity of the first water tank 100 is greater than the capacity of the second water tank 200, the first water tank 100 includes a first water outlet 110 and a first water inlet 120, and the second water tank 200 includes a second water inlet 210.

For example, the first water tank 100 may have a capacity of 2 liters to 10 liters, and the second water tank 200 may have a capacity of 0.5 liters to 1 liter. It is understood that the capacities of the first and second water tanks 100 and 200 may have other values.

In some embodiments, at least one of the first and second water tanks 100 and 200 may include a transparent housing or be provided with a transparent window thereon, so that a user can conveniently view the water quality, water level, etc. in the water tank.

In some embodiments, the first water tank 100 may include a water injection port through which water to be purified may be added to the first water tank 100. For example, the water filling port is connected with a tap water pipe. Illustratively, the first water tank 100 is further provided with a liquid level meter 10, and when the liquid level in the first water tank 100 drops to a set value, the valve 402 of the tap water pipe can be controlled to open to add water to the water inlet of the first water tank 100.

Specifically, the single-channel desalination assembly 300 includes a third water inlet 310 and a third water outlet 320. The single-channel desalination assembly 300 can purify the water flowing in from the third water inlet 310, and the purified water flows out from the third water outlet 320.

It will be appreciated that the single-channel desalination assembly 300, as shown in FIG. 1, uses only one water inlet and one water outlet for the purification of the water flowing therethrough, and thus may be referred to as a single-channel desalination assembly.

In some embodiments, the single channel desalination assembly 300 can, of course, also include other water inlets and/or outlets. For example, when the single-channel desalination assembly 300 is flushed and regenerated, the generated wastewater can be discharged through the water outlet. When the single-channel desalination assembly 300 is performing purification treatment on the flowing water, the water inlets and/or water outlets except the third water inlet 310 and the third water outlet 320 can be closed, so as to form a single-channel structure.

The single channel desalination module 300 may not discharge wastewater when performing purification treatment on the passing water. Through adopting the desalination subassembly of single current way to carry out the water purification, the water that gets into single current way desalination subassembly 300 can be followed the delivery port and discharged, obtains purification treatment simultaneously, does not produce waste water in this process, has improved the utilization ratio of water.

In some embodiments, the single-channel desalination assembly 300 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) desalination 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 electrified so as to realize the purification treatment of water, and the filter elements can be called as electrically driven 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, domestic purifier still includes the power supply unit, and the power supply unit connects electric drive desalination filter core, for electric drive desalination filter core power supply.

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

Specifically, as shown in fig. 1, the pipe system 400 includes a first pipe 410 connected between the first water outlet 110 and the third water inlet 310, a second pipe 420 connected between the third water outlet 320 and the first water inlet 120, and a third pipe 430 connected between the second water inlet 210 and the second pipe 420.

Wherein the second line 420 and the third line 430 are connected by a first three-way valve 401, and the second tank 200 is provided with a liquid level meter 10.

Specifically, when the liquid level of the second water tank 200 is lower than the preset level, the first three-way valve 401 allows the water flowing out of the third water outlet 320 to enter the second water tank 200 through the third pipeline 430.

Illustratively, as shown in FIG. 1, the first tank 100 stores 5 liters of water, and the water in the first tank 100 may flow into the single-channel desalination module 300 via the first pipeline 410 for purification. The purified water may enter the second water tank 200 through the third water outlet 320, the second pipeline 420 and the third pipeline 430, so that the water in the second water tank 200 reaches a preset water level, for example, a water level corresponding to 0.5 liter capacity.

In some embodiments, the second water tank 200 may be provided with a water receiving outlet 30, and a user may obtain a certain amount of water, for example, 0.5 liters of purified water, from the second water tank 200 through the water receiving outlet 30.

For example, when the liquid level of the second tank 200 is not lower than the preset level, the first three-way valve 401 may allow the water flowing out of the third water outlet 320 to flow into the first tank 100 through the second pipe 420, so that the water in the first tank 100 may be purified through the first pipe 410, the single channel desalination assembly 300, and the second pipe 420 for a plurality of times, such that the water in the first tank 100 is sufficiently clean.

Illustratively, the water in the first water tank 100 is purified after passing through the single-channel desalination assembly 300 several times, and the water in the first water tank 100 is increasingly clean, for example, the water is purified by passing through the single-channel desalination assembly 300 several times, so that the water quality of the water in the first water tank 100 can meet the requirement.

In some embodiments, the water in the first water tank 100 can be drunk after being purified once by the single-channel desalination assembly 300, and the water quality of the water entering the second water tank 200 can meet the requirement. The water from the first water tank 100 is purified by the single channel desalination module 300 and then flows into the second water tank 200, and when the water in the second water tank 200 reaches a predetermined water level, the water purified by the single channel desalination module 300 can flow into the first water tank 100.

Illustratively, the water in the first water tank 100 may be subjected to a plurality of single-channel desalination assemblies 300.

In other embodiments, the single channel desalination assembly 300 can purify the water in the second water tank 200 multiple times.

Illustratively, as shown in fig. 4, the second water tank 200 further includes a second water outlet 220, the pipe system 400 further includes a fourth pipe 440 connected between the second water outlet 220 and the third water inlet 310, and the first conductivity detection assembly 20 is disposed on the second water tank 200 and/or the fourth pipe 440.

Conductivity data of the water in the second water tank 200 can be detected by the first conductivity detection assembly 20. Illustratively, the household water purifying apparatus further includes a control assembly connected to the first conductivity detection assembly 20, and acquiring conductivity data of the water in the second water tank 200 from the first conductivity detection assembly 20.

The water quality of water at the corresponding position can be detected through the conductivity detection component. 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.

Illustratively, when the conductivity data of the water in the second water tank 200 does not reach the target conductivity, the fourth pipe 440 between the second water outlet 220 and the third water inlet 310 is communicated such that the water in the second water tank 200 is purified by the single channel desalination assembly 300, and the first three-way valve 401 allows the water flowing out of the third water outlet 320 to enter the second water tank 200 through the third pipe 430. Thus, when the water quality of the water in the second water tank 200 does not meet the requirement, the single channel desalination module 300 can perform the purification treatment on the water in the second water tank 200 again, so that the user can directly obtain the water with good quality from the second water tank 200.

Illustratively, in the process of purifying water, the salinity concentration in the water can be detected in real time by detecting the electrical conductivity of the water, and the desalination rate of the single channel desalination module 300 can be adjusted by changing the voltage of the single channel desalination module 300, so as to ensure the stability of the quality of the produced water.

In some embodiments, the target conductivity may be pre-stored in the memory of the control component, or the control component may determine the target conductivity according to a user setting operation, for example. When the conductivity of the water reaches the target conductivity, the water can be determined to be sufficiently pure, for example, to meet drinking standards.

By adjusting the target conductivity, the single channel desalination module 300 can be controlled to purify the water in the water tank to a corresponding water quality, and can be applied to a corresponding water use occasion.

In some embodiments, the control assembly includes an input device, which may include, for example, a button, knob, touch screen, microphone, and the like.

For example, the user may perform a setting operation of the target conductivity through the input device, and the control component may determine the target conductivity according to the setting operation of the user.

In some embodiments, as shown in fig. 4, a water receiving outlet 30 may be provided on the fourth pipe 440, and a user may take water in the second water tank 200 through the water receiving outlet 30. For example, a second three-way valve is disposed on the fourth pipeline 440, and the second three-way valve can communicate with the fourth pipeline 440 to enable the water in the second water tank 200 to enter the single-channel desalination assembly 300 for purification, or enable the water in the second water tank 200 to flow out to a user's water receiving container.

For example, the water outlet direction of the water receiving outlet 30 may be connected to a heating unit, for example, a heat exchanger. The heating unit may heat the outflow water to provide hot water of a desired temperature to a user.

Illustratively, the water receiving outlet 30 is connected to a plurality of water outlet pipes in the water outlet direction, and at least one of the water outlet pipes is provided with a heating unit.

In some embodiments, when the water in the second water tank 200 is purified by the single-channel desalination assembly 300, the first pipeline 410 between the first water outlet 110 and the third water inlet 310 is not communicated, so that the water in the first water tank 100 is prevented from affecting the quality of the water in the second water tank 200.

In some embodiments, when the water in the second water tank 200 is purified by the single-channel desalination assembly 300, the third pipeline 430 between the third water outlet 320 and the second water inlet 210 is communicated, and the third water outlet 320 is not communicated with the first water inlet 120, for example, the control assembly controls the first three-way valve 401 to communicate the third water outlet 320 with the second water inlet 210 without communicating the third water outlet 320 with the first water inlet 120, so that the water in the second water tank 200 is purified in the closed circulation path formed by the second water tank 200 and the single-channel desalination assembly 300, and therefore, a certain amount of quality water can be stored in the second water tank 200 more quickly, and the waiting time for a user to take water is reduced.

Illustratively, as shown in fig. 4, at least one of the first pipeline 410, the fourth pipeline 440, and the connection between the first pipeline 410 and the fourth pipeline 440 is provided with a valve 402, and when the water in the second water tank 200 is purified by the single-channel desalination assembly 300, the valve 402 connects the second water outlet 220 and the third water inlet 310.

For example, a check valve may be disposed on the fourth pipe 440 to prevent water in the first water tank 100 from entering the second water tank 200 through the fourth pipe 440 and affecting the water quality in the second water tank 200.

For example, a third three-way valve may be provided at the junction of the first line 410 and the fourth line 440, which may allow the water in the first tank 100 to enter the single-channel desalination assembly 300 for purification, or allow the water in the second tank 200 to enter the single-channel desalination assembly 300 for purification.

For example, when the water in the second water tank 200 is purified by the single channel desalination assembly 300, the valve 402 of the first pipeline 410 and/or the valve 402 at the connection between the first pipeline 410 and the fourth pipeline 440 do not connect the first water outlet 110 and the third water inlet 310, so as to prevent the water in the first water tank 100 from affecting the water quality in the second water tank 200, and improve the purification efficiency of the single channel desalination assembly 300 on the water in the second water tank 200.

In some embodiments, when the liquid level of the second tank 200 is not lower than the preset level and the conductivity data of the water in the second tank 200 reaches the target conductivity, the second water outlet 220 and the third water inlet 310 are not communicated, and the water in the first tank 100 flows to the single channel desalination assembly 300 through the first pipe 410 and the water out of the third water outlet 320 enters the first tank 100 through the second pipe 420.

Specifically, when the water amount in the second water tank 200 is sufficient and the water quality meets the requirement, the flow of the water in the second water tank 200 to the single-channel desalination assembly 300 is cut off, so that the water in the first water tank 100 enters the single-channel desalination assembly 300 for purification treatment, and the purified water flows back to the first water tank 100 through the second pipeline 420.

For example, when the liquid level in the second tank 200 is not below the preset level and the conductivity data of the water in the second tank 200 reaches the target conductivity, the valve 402 on the fourth line 440 is closed or the third three-way valve is controlled such that the water in the first tank 100 enters the single channel desalination assembly 300 for purification.

Illustratively, the second conductivity detection module 40 is disposed on the first water tank 100 and/or the first pipeline 410, and when the conductivity data of the water in the first water tank 100 reaches the target conductivity, the single channel desalination module 300 can be closed, and the water quality in the first water tank 100 can meet the requirement.

Illustratively, after a user takes water from the second tank 200, if the liquid level of the second tank 200 is below the predetermined level, the water in the first tank 100 is replenished into the second tank 200 via the first pipe 410, the single-channel desalination assembly 300, and the third pipe 430, facilitating the user to take water.

In some embodiments, as shown in fig. 4, at least one of first conduit 410, second conduit 420, third conduit 430, and fourth conduit 440 is provided with drive assembly 403. For example, a drive assembly 403 is provided on the first conduit 410 for causing water in the first tank 100 to flow to the single-channel desalination assembly 300; a drive assembly 403 may be provided on the fourth line 440 for causing water in the second tank 200 to flow to the single-channel desalination assembly 300.

Illustratively, the control assembly may be coupled to the drive assembly 403, and the drive assembly 403 may include a self-primer pump. The control assembly may drive the flow of water in the first tank 100, the second tank 200, the single flow drive assembly 403, the piping system 400 by controlling the drive assembly 403, or may drive the second narcissus to which total water flows to the user's water receiving container. The flow rate of water can be improved, and a user is prevented from waiting for a long time when receiving water.

In some embodiments, as shown in fig. 4, at least one of first conduit 410, second conduit 420, third conduit 430, and fourth conduit 440 is provided with filter assembly 404. For example, a filter assembly 404 may be disposed in the first conduit 410 for filtering the water flowing out of the first tank 100, for example, to remove particulate impurities, residual chlorine, etc. from the water, thereby reducing the workload and consumption of the single-channel desalination assembly 300 and prolonging the regeneration cycle and service life thereof.

Illustratively, the filter assembly 404 may include a PP cotton filter element and/or an activated carbon filter element.

In some embodiments, the single-channel desalination assembly 300 can include a housing and a filter element removably received within an interior of the housing. The filter element includes, for example, a physisorption desalination filter element and/or a chemisorption desalination filter element as previously described. The filter elements of the single-channel desalination assembly 300 can be removed and flushed as needed to regenerate the filter elements of the single-channel desalination assembly 300.

In some embodiments, the single channel desalination assembly 300 is powered in a first direction to purify water flowing therethrough; when the single-channel desalination assembly 300 is powered in a second direction opposite the first direction, the water flowing through cleans the single-channel desalination assembly 300.

Illustratively, the single-channel desalination assembly 300 can include a waste water discharge port. When needed, the power supply assembly can provide reverse voltage for the electrically driven desalination filter element, so that the filter element of the single-channel desalination assembly 300 can be flushed and regenerated, and the generated wastewater can be discharged through the wastewater discharge port.

For example, when the duration that the water quality detected by the conductivity detection assembly does not reach the target conductivity exceeds a preset duration, for example, 24 hours, it may be determined that the single channel desalination assembly 300 needs to be regenerated, for example, a corresponding prompt message may be output to a user, or a voltage in a reverse direction may be provided to the electrically driven desalination filter element by the power supply assembly, so as to implement washing and regeneration of the filter element of the single channel desalination assembly 300.

The domestic purifier that the above-mentioned embodiment of this specification provided includes: the water tank comprises a first water tank and a second water tank, wherein the capacity of the first water tank is larger than that of the second water tank, the first water tank comprises a first water outlet and a first water inlet, and the second water tank comprises a second water inlet; the single-channel desalting component comprises a third water inlet and a third water outlet, and is used for purifying water flowing in from the third water inlet and enabling the treated water to flow out from the third water outlet; the pipeline system comprises a first pipeline connected between the first water outlet and the third water inlet, a second pipeline connected between the third water outlet and the first water inlet, and a third pipeline connected between the second water inlet and the second pipeline; the second pipeline and the third pipeline are connected through a first three-way valve, the second water tank is provided with a liquid level meter, and when the liquid level of the second water tank is lower than a preset water level, the first three-way valve enables water flowing out of the third water outlet to enter the second water tank through the third pipeline. The water flowing through the single-channel desalting component is purified, so that no waste water is discharged, and the utilization rate of the water is improved; and the pipeline system can deliver the water in the first water tank with larger capacity to the second water tank with smaller capacity after being purified by the single-channel desalting component, so that a user can conveniently obtain the purified water as soon as possible, and the waiting time is shortened.

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