CN114074972A

CN114074972A - Household water purifying device and under-kitchen water purifier

Info

Publication number: CN114074972A
Application number: CN202010808804.XA
Authority: CN
Inventors: 陈小平; 晏博; 吕苏
Original assignee: Yunmi Internet Technology Guangdong Co Ltd
Current assignee: Yunmi Internet Technology Guangdong Co Ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2022-02-22

Abstract

The application discloses a household water purifying device and a kitchen-under type water purifying machine, wherein the household water purifying device comprises a double-channel desalting component, and the double-channel desalting component comprises a first water inlet, a second water inlet, a first water outlet and a second water outlet; the pipeline system comprises a first pipeline, a second pipeline, a third pipeline and a fourth pipeline, wherein the first pipeline is connected with the first water inlet, and the second pipeline is connected with the second water inlet; the water tank comprises a third water inlet and a third water outlet, the third water outlet is connected with the second pipeline, and the third water inlet is connected with the fourth pipeline; when the conductivity data that the water in the water tank corresponds is less than preset threshold value, carry the water in the water tank to double-flow-channel desalination subassembly through the second pipeline, carry out purification treatment with the water that flows into in the double-flow-channel desalination subassembly from first pipeline together, the waste water of production is carried to the water tank through the fourth pipeline, recycles to avoid waste water to be wasted, improved the utilization ratio of water.

Description

Household water purifying device and under-kitchen water purifier

Technical Field

The application relates to the technical field of household water purification, in particular to a household water purification device and a kitchen lower water purifier.

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. In the treatment process, substances such as bacteria, viruses, scale, salt ions and the like which do not pass through the reverse osmosis membrane form waste water to be discharged. The reverse osmosis membrane commonly used at present generates more waste water and wastes when purifying, and the utilization ratio of water is not high.

Disclosure of Invention

The embodiment of the application provides a household water purifying device, waste water generated when a double-channel desalting component is used for water purification treatment is recycled and purified again together with other incoming water, the waste water is recycled continuously, and the utilization rate of water is improved; and the conductivity data corresponding to the wastewater for recycling in the water tank is ensured to be less than the preset threshold value, so that the water quality for preparing the pure water is also ensured.

In a first aspect, an embodiment of the present application provides a domestic water purification device, domestic water purification device includes:

a dual-channel desalination assembly comprising a first water inlet, a second water inlet, a first water outlet, and a second water outlet, the dual-channel desalination assembly configured to purify water flowing from the first water inlet and/or the second water inlet;

the pipeline system comprises a first pipeline, a second pipeline, a third pipeline and a fourth pipeline, the first pipeline is connected with the first water inlet, the first pipeline is used for supplying water to the first water inlet, the second pipeline is connected with the second water inlet, the second pipeline is used for supplying water to the second water inlet, the third pipeline is used for outputting pure water processed by the double-flow-channel desalination assembly, and the fourth pipeline is used for outputting wastewater processed by the double-flow-channel desalination assembly;

and the water tank comprises a third water inlet and a third water outlet, the third water outlet is connected with the second pipeline, the third water inlet is connected with the fourth pipeline, when the conductivity data corresponding to the water in the water tank is smaller than a preset threshold value, the water in the water tank is conveyed to the double-channel desalination assembly through the second pipeline for purification treatment, and the generated wastewater is conveyed to the water tank through the fourth pipeline.

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

when the first waterway switching device is communicated with the first water outlet and the third pipeline in a tangential direction and is communicated with the second water outlet and the fourth pipeline, water flowing in from the first water inlet and/or the second water inlet is purified by the double-channel desalination assembly, the generated pure water is discharged to the third pipeline through the first water outlet, and wastewater is discharged to the fourth pipeline through the second water outlet;

when the first waterway switching device is communicated with the first water outlet and the fourth pipeline in a tangential direction and is communicated with the second water outlet and the third pipeline, water flowing in from the first water inlet and/or the second water inlet is purified by the double-flow-channel desalting component, generated pure water is discharged to the third pipeline through the second water outlet, and wastewater is discharged to the fourth pipeline through the first water outlet.

Exemplarily, the first waterway switching device comprises a first three-way solenoid valve and a second three-way solenoid valve, the first three-way solenoid valve is connected with the first water outlet, and the second three-way solenoid valve is connected with the second water outlet;

when the first three-way electromagnetic valve is tangential to the third pipeline and the second three-way electromagnetic valve is tangential to the fourth pipeline, the first water outlet is communicated with the third pipeline and the second water outlet is communicated with the fourth pipeline;

when the first three-way electromagnetic valve is tangential to the fourth pipeline and the second three-way electromagnetic valve is tangential to the third pipeline, the first water outlet is communicated with the fourth pipeline and the second water outlet is communicated with the third pipeline.

Illustratively, the pipeline system further comprises a fifth pipeline, the fifth pipeline is connected with the third water outlet, and when the conductivity data corresponding to the water in the water tank is greater than or equal to the preset threshold, the water in the water tank is discharged through the fifth pipeline.

In an exemplary embodiment, the pipeline system further includes a second waterway switching device connected to the third water outlet, and when the conductivity data corresponding to the water in the water tank is smaller than the preset threshold, the second waterway switching device is tangent to the second pipeline, so that the water in the water tank is delivered to the dual-channel desalination assembly through the second pipeline for purification treatment; and when the conductivity data corresponding to the water in the water tank is greater than or equal to the preset threshold value, the second waterway switching device is cut to the fifth pipeline so as to discharge the water in the water tank through the fifth pipeline.

Illustratively, the household water purifying device further comprises a control component, the control component is connected with the second water path switching device, and when the conductivity data corresponding to the water in the water tank is smaller than the preset threshold value, the control component controls the second water path switching device to cut the second pipeline; when the conductivity data corresponding to the water in the water tank is larger than or equal to the preset threshold value, the control component controls the second waterway switching device to be tangential to the fifth pipeline.

Illustratively, the pipe system further comprises a sixth pipe, one end of the sixth pipe is connected to the first pipe, the other end of the sixth pipe is connected to the water tank, and the sixth pipe is used for conveying the water shunt in the first pipe to the water tank.

Illustratively, the pipeline system further comprises a through valve arranged on the sixth pipeline, and when the water amount in the water tank is less than the preset water amount, the through valve is opened to send water to the water tank through the sixth pipeline; and when the water quantity in the water tank is greater than or equal to the preset water quantity, closing the straight-through valve.

Illustratively, the dual-channel desalination assembly comprises an electrodialysis membrane cartridge.

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

In a second aspect, the embodiment of the present application further provides an under-kitchen water purifier, where the under-kitchen water purifier includes the household water purifying device as described above.

The embodiment of the application discloses a household water purifying device and a kitchen-following water purifying machine, the household water purifying device comprises a double-channel desalting component, a pipeline system and a water tank, the double-channel desalting component comprises a first water inlet, a second water inlet, a first water outlet and a second water outlet, the pipeline system comprises a first pipeline, a second pipeline, a third pipeline and a fourth pipeline, the water tank comprises a third water inlet and a third water outlet, the first pipeline is connected with the first water inlet, the second pipeline is connected with the second water inlet, the third water outlet is connected with the second pipeline, the third water inlet is connected with the fourth pipeline, when the conductivity data corresponding to the water in the water tank is smaller than a preset threshold value, the water in the water tank is conveyed into the double-channel desalting component through the third water outlet and the second pipeline, and is purified together with the water flowing into the double-channel desalting component from the first pipeline and the first water inlet, the waste water that produces is carried to the water tank through fourth pipeline and third inlet port, recycles, has guaranteed moreover that the conductivity data that the water that recycles corresponds is less than and has predetermine the threshold value, has ensured the quality of water of the pure water of preparing, has avoided waste water to be wasted simultaneously again to the utilization ratio of water has been improved.

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 view of a household water purifying apparatus according to another embodiment of the present application;

FIG. 3 is a schematic view of a household water purifying apparatus according to another embodiment of the present application;

FIG. 4 is a schematic diagram of a desalination process of an electrodialysis membrane cartridge;

FIG. 5 is a schematic diagram of the electrode reversing process of the electrodialysis membrane filter element;

fig. 6 is a schematic view of the connection relationship of the parts in the household water purifying device.

Reference numerals: 100. a dual-channel desalination assembly; 110. a first water inlet; 120. a second water inlet; 130. a first water outlet; 140. a second water outlet; 200. a piping system; 210. a first pipeline; 220. a second pipeline; 230. a third pipeline; 240. a fourth pipeline; 250. a fifth pipeline; 260. a first waterway switching device; 261. a first three-way solenoid valve; 262. a second three-way solenoid valve; 270. a second waterway switching device; 280. a sixth pipeline; 290. a straight-through valve; 300. a water tank; 310. a third water inlet; 320. a third water outlet;

10. a power supply assembly; 20. a drive assembly; 40. a control component; 50. a filter assembly;

30. an electrodialysis membrane filter element; 31. an electrode; 311. a first electrode; 312. a second electrode; 32. a cation exchange membrane; 33. 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 dual-channel desalination assembly 100, a pipeline system 200 and a water tank 300.

As shown in FIG. 1, the dual-channel desalination assembly 100 comprises a first water inlet 110, a second water inlet 120, a first water outlet 130 and a second water outlet 140, water can flow into the dual-channel desalination assembly 100 from the first water inlet 110 and/or the second water inlet 120 for purification treatment, and treated pure water and waste water are discharged through the first water outlet 130 and the second water outlet 140, respectively. For example, pure water is discharged from the first water outlet 130, and waste water is discharged from the second water outlet 140; alternatively, pure water is discharged from the second water outlet 140 and waste water is discharged from the first water outlet 130.

The pipe system 200 comprises a first pipe 210, a second pipe 220, a third pipe 230 and a fourth pipe 240, the first pipe 210 is connected to the first water inlet 110, the first pipe 210 is used for delivering water to the first water inlet 110, for example, tap water is delivered to the first water inlet 110 through the first pipe 210. The second pipe 220 is connected to the second water inlet 120, and the second pipe 220 is used for supplying water to the second water inlet 120. The third pipeline 230 is used for outputting pure water processed by the dual-channel desalination assembly 100, and the fourth pipeline 240 is used for outputting wastewater processed by the dual-channel desalination assembly 100.

For example, the third pipeline 230 may be switchably connected to the first water outlet 130/the second water outlet 140, and the fourth pipeline 240 may be switchably connected to the second water outlet 140/the first water outlet 130, that is, the third pipeline 230 may be connected to the first water outlet 130, and the fourth pipeline 240 may be connected to the second water outlet 140; or the third pipeline 230 is connected with the second water outlet 140, and the fourth pipeline 240 is connected with the first water outlet 130.

The water tank 300 comprises a third water inlet 310 and a third water outlet 320, wherein the third water outlet 320 is connected to the second pipeline 220, the third water inlet 310 is connected to the fourth pipeline 240, and during the operation of the household water purifying apparatus, the water quality of the water in the water tank is monitored, for example, conductivity data, such as a TDS value, corresponding to the water in the water tank is detected. The TDS value is the water quality testing index who sets up specially to the pure water, and the TDS value represents the total solid content of soluble in the aquatic. The TDS value can reflect the water quality to a certain degree, and generally, the lower the TDS value is, the less soluble salts such as heavy metal ions in the water are, and the purer the water quality is.

For example, a conductivity detection module is disposed on the second pipeline 220, and conductivity data of the water flowing in the second pipeline 220, that is, the quality of the water in the water tank 300, can be detected through the conductivity detection module.

When the conductivity data corresponding to the water in the water tank 300 is smaller than the preset threshold, that is, when the concentration of soluble salts such as heavy metal ions in the water is not high, the water in the water tank 300 is transported to the dual-channel desalination assembly 100 through the second pipeline 220 for purification treatment, and the generated wastewater is transported to the water tank 300 through the fourth pipeline 240. Then, the wastewater flowing into the water tank 300 can flow out from the third water outlet 320 and be transported to the dual-channel desalination assembly 100 through the second pipeline 220 for purification treatment, thereby realizing multiple recycling of water. It should be noted that the preset threshold may be flexibly set according to actual situations, and is not particularly limited herein. For example, if the user has a high demand for water purity, the preset threshold may be set to a smaller conductivity value; if the user does not have high requirements on the purity of the water, the preset threshold value can be set to be a larger conductivity value.

As the water in the water tank 300 is recycled more and more times, the conductivity data of the water in the water tank 300 is increased until the water in the water tank 300 is no longer delivered to the dual-channel desalination assembly 100 for purification when the conductivity data corresponding to the water in the water tank 300 is greater than or equal to the preset threshold. For example, when the conductivity data corresponding to the water in the water tank 300 is greater than or equal to a preset threshold value, the water in the water tank 300 is completely discharged, or the water in the water tank 300 is partially discharged.

Illustratively, the water tank 300 includes a transparent housing or a transparent window on the housing, which is convenient for a user to view the water quality, water level, etc. in the water tank.

Illustratively, a liquid level meter is further provided in the water tank 300, and water is added to the water tank 300 when the liquid level in the water tank 300 drops to a set value.

In some embodiments, as shown in fig. 1, the pipeline system 200 further includes a fifth pipeline 250, wherein the fifth pipeline 250 is connected to the third water outlet 320 of the water tank 300, and in the process of monitoring the water quality of the water in the water tank 300, when the conductivity data corresponding to the water in the water tank 300 is greater than or equal to a preset threshold, that is, the water in the water tank 300 has poor water quality and is not suitable for recycling, the water in the water tank 300 is discharged through the fifth pipeline 250. For example, the water in the water tank 300 is entirely discharged through the fifth pipe 250, or the water in the water tank 300 is partially discharged through the fifth pipe 250.

Illustratively, after the water in the water tank 300 is discharged outside, new water is refilled into the water tank 300 to lower the conductivity data of the water in the water tank 300. And when the conductivity data of the water in the water tank 300 decreases to less than the predetermined threshold, the water in the water tank 300 may be sent to the dual-channel desalination assembly 100 again via the second pipeline 220 for purification.

Illustratively, the household water purification apparatus is stopped during discharging of the water in the water tank 300 or during filling of the water in the water tank 300.

Illustratively, during discharging the water in the water tank 300 or filling the water in the water tank 300, the water is transported toward the first water inlet 110 through the first pipeline 210 and flows into the dual-channel desalination assembly 100 for purification, so as to generate a small amount of pure water.

Carry out purification treatment to the water that flows in from first water inlet 110 and second water inlet 120 through double-flow-channel desalination subassembly 100, the waste water of production is retrieved to in the water tank 300, the quality of water to the water tank 300 middling is monitored, when the conductivity data of water in the water tank 300 is less than preset threshold value, carry out purification treatment to double-flow-channel desalination subassembly 100 with the water cycle output in the water tank 300, thereby realize the water multiple cycle in the water tank 300 and use, the waste water that produces when avoiding double-flow-channel desalination subassembly 100 to carry out purification treatment is wasted, therefore, the utilization ratio of water has been improved.

In some embodiments, as shown in fig. 1, the piping system 200 further includes a first waterway switch 260, wherein the first waterway switch 260 is connected to the first water outlet 130 and the second water outlet 140. The first waterway switching device 260 may switch the communication manner of the first water outlet 130, the second water outlet 140 and the third pipeline 230 and the fourth pipeline 240, for example, the first waterway switching device 260 may tangentially communicate the first water outlet 130 with the third pipeline 230 and communicate the second water outlet 140 with the fourth pipeline 240, or the first waterway switching device 260 may tangentially communicate the first water outlet 130 with the fourth pipeline 240 and communicate the second water outlet 140 with the third pipeline 230. When the first waterway switching device 260 tangentially communicates the first water outlet 130 with the third pipeline 230 and communicates the second water outlet 140 with the fourth pipeline 240, the water flowing in from the first water inlet 110 and/or the second water inlet 120 is purified by the dual-channel desalination assembly 100, the generated pure water is discharged to the third pipeline 230 through the first water outlet 130, and the wastewater is discharged to the fourth pipeline 240 through the second water outlet 140. When the first waterway switching device 260 tangentially communicates the first water outlet 130 with the fourth pipeline 240 and communicates the second water outlet 140 with the third pipeline 230, the water flowing in from the first water inlet 110 and/or the second water inlet 120 is purified by the dual-channel desalination assembly 100, the generated pure water is discharged to the third pipeline 230 through the second water outlet 140, and the wastewater is discharged to the fourth pipeline 240 through the first water outlet 130.

Illustratively, the first waterway switching device 260 includes a tangential valve, such as a four-way valve, or the first waterway switching device 260 includes a plurality of three-way solenoid valve sets, and the like.

In some embodiments, as shown in fig. 2, the first waterway switching device 260 includes a first three-way solenoid valve 261 and a second three-way solenoid valve 262, wherein the first three-way solenoid valve 261 is connected to the first water outlet 130, and the second three-way solenoid valve 262 is connected to the second water outlet 140. The first three-way solenoid valve 261 may be tangent to the third line 230/fourth line 240 and the second three-way solenoid valve 262 may be tangent to the fourth line 240/third line 230, i.e., the first three-way solenoid valve 261 is tangent to the third line 230 and the second three-way solenoid valve 262 is tangent to the fourth line 240, or the first three-way solenoid valve 261 is tangent to the fourth line 240 and the second three-way solenoid valve 262 is tangent to the third line 230.

When the first three-way solenoid valve 261 is tangent to the third pipeline 230 and the second three-way solenoid valve 262 is tangent to the fourth pipeline 240, the first water outlet 130 is communicated with the third pipeline 230 and the second water outlet 140 is communicated with the fourth pipeline 240. The water flowing in from the first water inlet 110 and/or the second water inlet 120 is purified by the dual-channel desalination assembly 100, the produced pure water is discharged to the third pipeline 230 through the first water outlet 130, and the waste water is discharged to the fourth pipeline 240 through the second water outlet 140.

When the first three-way solenoid valve 261 is tangent to the fourth pipeline 240 and the second three-way solenoid valve 262 is tangent to the third pipeline 230, the first water outlet 130 is communicated with the fourth pipeline 240 and the second water outlet 140 is communicated with the third pipeline 230. The water flowing in from the first water inlet 110 and/or the second water inlet 120 is purified by the dual-channel desalination assembly 100, the produced pure water is discharged to the third pipeline 230 through the second water outlet 140, and the wastewater is discharged to the fourth pipeline 240 through the first water outlet 130.

In some embodiments, as shown in fig. 1, the pipe system 200 further includes a second waterway switching device 270 connected to the third water outlet 320 of the water tank 300, and the second waterway switching device 270 may be tangential to the second pipe 220 or tangential to the fifth pipe 250. In the process of monitoring the water quality of the water in the water tank 300, when the corresponding conductivity data of the water in the water tank 300 is smaller than the preset threshold value, the second waterway switching device 270 is switched to the second pipeline 220, so that the water in the water tank 300 is delivered to the dual-channel desalination assembly 100 through the second pipeline 220 for purification treatment. When the water in the water tank 300 is recycled for a plurality of times and the corresponding conductivity data of the water in the water tank 300 is greater than or equal to the preset threshold value, the second waterway switching device 270 is cut to the fifth pipeline 250 to discharge the water in the water tank 300 through the fifth pipeline 250.

Illustratively, second waterway switching device 270 includes a tangential valve or a plurality of two-way solenoid valves or three-way solenoid valves, etc.

In some embodiments, as shown in fig. 3, the piping system 200 further includes a sixth piping 280, wherein one end of the sixth piping 280 is connected to the first piping 210, and the other end is connected to the water tank 300, and the sixth piping 280 is used for conveying the water in the first piping 210 to the water tank 300, so that the water tank 300 can be replenished.

In some embodiments, as shown in fig. 3, the pipe system 200 further includes a through valve 290 disposed on the sixth pipe 280, and when the amount of water in the water tank 300 is less than a predetermined amount, that is, when the water path of the water tank 300 is small, the through valve 290 is opened to supply water to the water tank 300 through the sixth pipe 280 to increase the amount of water in the water tank 300. When the amount of water in the water tank 300 is greater than or equal to the predetermined amount of water, that is, when the water path of the water tank 300 is large, the through valve is closed, and it is not necessary to supply water to the water tank 300.

In some embodiments, as shown in fig. 3, the piping system 200 further includes a filter assembly 50 disposed on the first piping 210, and/or a filter assembly 50 disposed on the third piping 230, and/or a filter assembly 50 disposed on the second piping 220.

When the filtering assembly 50 is disposed on the first pipeline 210, the water output from the first pipeline 210 is filtered by the filtering assembly 50 and then flows into the dual-channel desalination assembly 100 through the first water inlet 110, and the dual-channel desalination assembly 100 purifies the inflow water or performs reverse-polar washing on the dual-channel desalination assembly 100 through the inflow water. Because the water flowing into the dual-flow desalination assembly 100 is filtered by the filter assembly 50, the risk of fouling of the dual-flow desalination assembly 100 is reduced as compared to flowing tap water directly into the dual-flow desalination assembly 100.

Similarly, when the filtering assembly 50 is disposed on the second pipeline 220, the water output from the second pipeline 220 is filtered by the filtering assembly 50 and then flows into the dual-channel desalination assembly 100 through the second water inlet 120, and the dual-channel desalination assembly 100 performs purification treatment on the inflow water, or performs reverse-polarity washing on the dual-channel desalination assembly 100 through the inflow water. Because the water flowing into the dual-flow desalination assembly 100 is filtered by the filter assembly 50, the risk of fouling of the dual-flow desalination assembly 100 is reduced as compared to flowing tap water directly into the dual-flow desalination assembly 100.

When the filtering assembly 50 is disposed on the third pipeline 230, the water flowing into the dual-channel desalination assembly 100 from the first water inlet 110 and/or the second water inlet 120 is processed by the dual-channel desalination assembly 100, and the generated pure water flows into the third pipeline 230 after being filtered by the filtering assembly 50, so as to further improve the quality of the prepared pure water.

Illustratively, the filter assembly 50 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 functional filter element comprises at least one of activated carbon particles and activated carbon rods, and the removal rate of COD (Chemical Oxygen Demand) in water by the physical adsorption functional filter element is more than 20%, and preferably more than 50%.

Specifically, the dual-channel desalination assembly 100 includes an electrodialysis membrane filter element, which can cause directional migration of cations and anions when powered on, so as to realize water purification treatment, and may be referred to as an electrically-driven dual-channel desalination filter element.

Specifically, fig. 4 and 5 show a schematic view of a structure of an electrodialysis membrane cartridge 30.

As shown in fig. 4 and 5, the electrodialysis membrane cartridge 30 includes one or more pairs of electrodes 31, and at least one pair of electrodes 31 has a cation exchange membrane 32 and an anion exchange membrane 33 disposed therebetween, and the cation exchange membrane 32 are disposed in an opposite staggered manner. For example, in the electrodialysis membrane cartridge 30 shown in fig. 4 and 5, a plurality of cation exchange membranes 32 and a plurality of anion exchange membranes 33 are provided between a pair of electrodes 31 in such a manner that the cation exchange membranes 32, the anion exchange membranes 33, and the cation exchange membranes 32 are staggered. The cation exchange membrane 32 and the anion exchange membrane 33 are spaced apart, for example, such that water passes between the cation exchange membrane 32 and the anion exchange membrane 33 as it passes through the electrodialysis membrane cartridge 30.

As shown in fig. 4 and 5, the pair of electrodes 31 includes a first electrode 311 and a second electrode 312, wherein the first electrode 311 is disposed opposite the cation exchange membrane 32 adjacent to the first electrode 311, and the second electrode 312 is disposed opposite the cation exchange membrane 32 adjacent to the second electrode 312.

Fig. 4 is a schematic diagram showing the operation principle of the electrodialysis membrane filter element 30 in the process of purifying water. The potential of the first electrode 311 is higher than that of the second electrode 312, that is, the first electrode 311 is a positive electrode, and the second electrode 312 is a negative electrode. At this time, anions such as Cl "in the raw water to be purified move toward the anode direction and migrate to the flow channel between the cation exchange membrane 32 and the anion exchange membrane 33 through the anion exchange membrane 33, and cations such as Na + in the raw water also move toward the cathode direction and migrate to the flow channel between the cation exchange membrane 32 and the anion exchange membrane 33 through the cation exchange membrane 32; so that the concentrations of the cations and the anions in the flow passage between the cation exchange membrane 32 and the anion exchange membrane 33 are higher and higher, and the concentrations of the cations and the anions in the flow passage between the anion exchange membrane 33 and the cation exchange membrane 32 are lower and lower. Water containing cations such as Na + and having a low concentration of anions such as Cl-is called pure water, and the pure water flows out from a flow passage between the anion exchange membrane 33 and the cation exchange membrane 32; water containing cations such as Na + and anions such as Cl-with high concentration can be called waste water, and the waste water flows out from a flow passage between the cation exchange membrane 32 and the anion exchange membrane 33.

As shown in fig. 5, during the reverse polarity washing process of the electrodialysis membrane cartridge 30, the first electrode 311 and the second electrode 312 are switched such that the potential of the first electrode 311 is lower than the potential of the second electrode 312, i.e. the first electrode 311 is a negative electrode and the second electrode 312 is a positive electrode. At this time, anions such as Cl "in the raw water move toward the anode through the anion exchange membrane 33 and migrate into the flow channel between the anion exchange membrane 33 and the cation exchange membrane 32, while cations such as Na + in the raw water move toward the cathode and also migrate into the flow channel between the anion exchange membrane 33 and the cation exchange membrane 32 through the cation exchange membrane 32. The generated pure water flows out from a flow passage between the cation exchange membrane 32 and the anion exchange membrane 33, and the wastewater flows out from a flow passage between the anion exchange membrane 33 and the cation exchange membrane 32.

Illustratively, as shown in fig. 6, the household water purifying apparatus may further include a power supply assembly 10 and a driving assembly 20, wherein the power supply assembly 10 is connected to the dual-channel desalination assembly 100, and applies a voltage to the dual-channel desalination assembly 100. For example, an electrodialysis membrane filter element is connected to supply power to the electrodialysis membrane filter element. Illustratively, the power supply assembly 10 may include a dc power supply. Drive assembly 20 drives water flow to dual-channel desalination assembly 100. Illustratively, the drive assembly 20 may include a drive pump. Illustratively, as shown in fig. 1-3, a driving assembly 20 is disposed on first pipeline 210 and second pipeline 220, driving assembly 20 disposed on first pipeline 210 drives water in first pipeline 210 to flow to dual-channel desalination assembly 100 via first water inlet 110, and driving assembly 20 disposed on second pipeline 220 drives water in water tank 300 to flow to dual-channel desalination assembly 100 via second water inlet 120.

In some embodiments, the voltage at which the power supply assembly 10 supplies power to the electrodialysis membrane filter element can be adjusted, and the salt rejection rate of the electrodialysis membrane filter element changes when the voltage supplied by the power supply assembly 10 is adjusted.

In other embodiments, the dual-flow desalination assembly 100 is removably received within the interior of a domestic water purification apparatus such that the dual-flow desalination assembly 100 can be removed from the domestic water purification apparatus for flushing when desired.

In some embodiments, as shown in fig. 6, the household water purifying apparatus further comprises a control assembly 40, the control assembly 40 is connected with the power supply assembly 10, the driving assembly 20, the first waterway switching device 260, the second waterway switching device 270 and the through valve 290, and the power supply assembly 10 is connected with the dual-channel desalination assembly 100. Illustratively, the control component 40 may include, for example, a single-chip microcomputer or the like.

Illustratively, the control assembly 40 may include input devices, which may include, for example, buttons, knobs, touch screens, microphones, and the like.

Illustratively, when the control assembly 40 detects a control operation via the input device, such as a user pressing a self-cleaning button, or uttering a voice including a self-cleaning command, the power supply assembly 10 is controlled to switch the electrodes of the dual-channel desalination assembly 100, and the water flowing in from the first water inlet 110 and the second water inlet 120 performs a reverse-polarity washing of the dual-channel desalination assembly 100.

In some embodiments, the control component 40 is connected to the first water path switching device 260, and controls the reverse-polarity washing to the dual-channel desalination assembly 100 when the working state of the dual-channel desalination assembly 100 reaches a preset condition, for example, when the working time of the water purification treatment of the dual-channel desalination assembly 100 reaches a preset time, for example, 30 minutes, or when the dual-channel desalination assembly 100 is not currently running and the accumulated electric quantity Q of the dual-channel desalination assembly 100 reaches the first preset electric quantity threshold Q1, or when the dual-channel desalination assembly 100 is currently running and the accumulated electric quantity Q of the dual-channel desalination assembly 100 reaches the second preset electric quantity threshold Q2, the control component 40 controls the power supply component 10 to switch the electrodes to the dual-channel desalination assembly 100, and controls the first water path switching device 260 to tangentially connect the first water outlet 130 with the fourth pipeline 240 and connect the second water outlet 140 with the third pipeline 230, or the first waterway switching device 260 is controlled to tangentially communicate the first water outlet 130 with the third pipeline 230 and communicate the second water outlet 140 with the fourth pipeline 240.

In some embodiments, the control assembly 40 is connected to the second water path switching device 270, and when the conductivity data corresponding to the water in the water tank 300 is less than the preset threshold, the control assembly 40 controls the second water path switching device 270 to cut the water in the water tank 300 to the second pipeline 220 for processing. When the corresponding conductivity data of the water in the water tank 300 is greater than or equal to the preset threshold, the control assembly 40 controls the second waterway switching device 270 to be tangent to the fifth pipeline 250 to discharge the water in the water tank 300 through the fifth pipeline 250.

In some embodiments, the control assembly 40 is connected to the through valve 290, and the control assembly 40 controls the opening/closing of the through valve 290. Illustratively, when the amount of water in the water tank 300 is less than the predetermined amount of water, the control unit 40 controls the through valve 290 to be opened, and the water is supplied to the water tank 300 through the sixth pipe 280. When the amount of water in the water tank 300 is greater than or equal to the predetermined amount of water, the control unit 40 controls the through valve 290 to be closed without supplying water to the water tank 300.

The domestic water purifying device provided by the above embodiment of the present specification comprises a double-flow-channel desalination assembly, a pipeline system and a water tank, wherein the double-flow-channel desalination assembly comprises a first water inlet, a second water inlet, a first water outlet and a second water outlet, the pipeline system comprises a first pipeline, a second pipeline, a third pipeline and a fourth pipeline, the water tank comprises a third water inlet and a third water outlet, the first pipeline is connected with the first water inlet, the second pipeline is connected with the second water inlet, the third water outlet is connected with the second pipeline, the third water inlet is connected with the fourth pipeline, when the conductivity data corresponding to the water in the water tank is smaller than a preset threshold value, the water in the water tank is conveyed to the double-flow-channel desalination assembly through the third water outlet and the second pipeline, and is purified together with the water flowing into the double-flow-channel desalination assembly from the first pipeline and the first water inlet, and the generated wastewater is conveyed to the water tank through the fourth pipeline and the third water inlet, the water recycling device has the advantages that recycling is carried out, conductivity data corresponding to recycled water are smaller than a preset threshold value, water quality of prepared pure water is guaranteed, waste water is avoided being wasted, and accordingly the utilization rate of water is improved.

The embodiment of the application also provides a kitchen-below type water purifier, which comprises a household water purifying device, wherein the household water purifying device can be the household water purifying device in the embodiment. The kitchen-below water purifier can achieve the beneficial effects that any household water purifying device provided by the embodiment of the present application can achieve, and for details, refer to the foregoing embodiment, and no further description is given here.

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.

Claims

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

2. The domestic water purification apparatus of claim 1, wherein said pipe system further comprises a first waterway switch connected to said first water outlet and said second water outlet;

3. The domestic water purification apparatus of claim 2, wherein said first waterway switching device comprises a first three-way solenoid valve and a second three-way solenoid valve, said first three-way solenoid valve being connected to said first water outlet, said second three-way solenoid valve being connected to said second water outlet;

4. The domestic water purification apparatus of claim 1, wherein said conduit system further comprises a fifth conduit, said fifth conduit being connected to said third water outlet, wherein water in said water tank is drained through said fifth conduit when said conductivity data corresponding to water in said water tank is greater than or equal to said predetermined threshold.

5. The domestic water purification apparatus of claim 4, wherein said piping system further comprises a second water path switching device connected to said third water outlet, wherein when said conductivity data corresponding to the water in said water tank is less than said preset threshold, said second water path switching device is directed to said second piping to deliver the water in said water tank to said dual-channel desalination assembly for purification treatment; and when the conductivity data corresponding to the water in the water tank is greater than or equal to the preset threshold value, the second waterway switching device is cut to the fifth pipeline so as to discharge the water in the water tank through the fifth pipeline.

6. The domestic water purification apparatus of claim 5, further comprising a control assembly, said control assembly being connected to said second waterway switching device, said control assembly controlling said second waterway switching device to be tangent to said second pipe when said conductivity data corresponding to water in said water tank is less than said preset threshold; when the conductivity data corresponding to the water in the water tank is larger than or equal to the preset threshold value, the control component controls the second waterway switching device to be tangential to the fifth pipeline.

7. The domestic water purification apparatus of claim 1, wherein said conduit system further comprises a sixth conduit connected at one end to said first conduit and at another end to said water reservoir, said sixth conduit for delivering a water split in said first conduit to said water reservoir.

8. The domestic water purification apparatus of claim 7, wherein said piping system further comprises a straight-through valve disposed on said sixth piping, and when the amount of water in said water tank is less than a predetermined amount of water, said straight-through valve is opened to supply water to said water tank through said sixth piping; and when the water quantity in the water tank is greater than or equal to the preset water quantity, closing the straight-through valve.

9. The domestic water purification apparatus of claim 1, wherein said dual-channel desalination assembly comprises an electrodialysis membrane cartridge.

10. The domestic water purification device of any one of claims 1 to 9, wherein the pipe system further comprises a filter assembly provided on the first pipe and/or a filter assembly provided on the third pipe.

11. The domestic water purification apparatus of claim 10, 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.

12. An under-kitchen water purifier, characterized in that it comprises a domestic water purification device according to any one of claims 1 to 11.