CN115448502A

CN115448502A - Household water purifying equipment

Info

Publication number: CN115448502A
Application number: CN202110644535.2A
Authority: CN
Inventors: 陈小平; 晏博; 吕苏
Original assignee: Guangdong Lizi Technology Co Ltd
Current assignee: Guangdong Lizi Technology Co Ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2022-12-09

Abstract

The invention discloses a household water purifying device which comprises a single-channel desalting component, a double-channel desalting component, a first pipeline, a fluid driving component, a second pipeline, a control valve, a first conductivity sensor, a drainage tube and a control component. The first pipeline is connected with a first water inlet of the single-channel desalting component and a second water inlet of the double-channel desalting component, the fluid driving component is arranged on the first pipeline, the second pipeline comprises a first branch and a second branch, one end of the first branch is connected with the second branch, the other end of the first branch is connected with a first water outlet of the single-channel desalting component, the other end of the second branch is connected with a second water outlet of the double-channel desalting component, the control valve and the first conductivity sensor are mounted on the second branch, and the drainage tube is communicated with the second water outlet and the first water inlet. The control assembly is electrically connected with the first conductivity sensor and the control valve, and when the quality of the effluent of the double-channel desalination assembly is lower than a preset value, the control assembly controls the water flowing out of the second water outlet to enter the single-channel desalination assembly for secondary purification.

Description

Household water purifying equipment

Technical Field

The invention relates to the field of household appliances, in particular to a household water purifying device.

Background

Reverse osmosis water purifiers mostly adopt reverse osmosis filter elements for water purification, and the reverse osmosis filter elements are provided with reverse osmosis membranes. When raw water enters the reverse osmosis water purifier, certain pressure is applied to the water to enable water molecules and ionic mineral elements in the raw water to pass through the reverse osmosis membrane, and macromolecular inorganic salts in the raw water comprise heavy metal ions, organic matters, bacteria, viruses and the like which cannot pass through the reverse osmosis membrane with small membrane pores, so that the water purifying effect is realized. Current reverse osmosis membrane water purifier is at the dormancy in-process, and the salt ion composition that stops in the inside raw water of water purifier can freely diffuse to the one side of producing water, causes the water purifier when operation once more, and the water is produced to initial pure water contains salt composition more, is unfavorable for user's healthy drinking water, for solving the problem that "first cup of water" can't drink, some design is that the emission can't quote "first cup of water", however this design causes the waste of water resource.

Disclosure of Invention

In view of this, the present invention discloses a household water purifying apparatus.

The invention provides a household water purification device, comprising:

a single-channel desalination assembly comprising a first water inlet and a first water outlet;

a dual-flow desalination assembly in parallel with the single-flow desalination assembly, the dual-flow desalination assembly comprising a second water inlet and a second water outlet;

the first pipeline is connected with the first water inlet and the second water inlet;

a fluid drive assembly disposed in the first conduit, the fluid drive assembly configured to drive water flow to the single-channel desalination assembly and the dual-channel desalination assembly;

the second pipeline comprises a first branch and a second branch, one end of the first branch is connected with one end of the second branch, the other end of the first branch is connected with the first water outlet, and the other end of the second branch is connected with the second water outlet;

the control valve is arranged on the second branch and used for controlling the on-off of the second branch;

the first conductivity sensor is arranged on the second branch circuit;

one end of the drainage tube is communicated with the second water outlet, and the other end of the drainage tube is communicated with the first water inlet;

and the control assembly is electrically connected with the first conductivity sensor and the control valve, and when the first conductivity sensor detects that the quality of the effluent of the double-channel desalination assembly is lower than a preset value, the control assembly controls the control valve to be closed so that the water flowing out of the second water outlet flows to the single-channel desalination assembly through the drainage tube for purification again.

After adopting foretell technical scheme, through set up first conductivity sensor and control valve on the second is by a journey, through setting up drainage tube one end and second delivery port intercommunication, the other end and first water inlet intercommunication, and when setting up the quality of water that detects double-flow-channel desalination subassembly as first conductivity sensor and be less than the default, control assembly control valve is closed so that the water that flows out from the second delivery port purifies once more through drainage tube flow direction single-flow-channel desalination subassembly, through twice purification treatment, can effectively solve first cup water and contain the problem that salt composition is on the high side, guarantee that drinking water is healthy, avoid the waste of water resource simultaneously.

As an improved mode, the first pipeline comprises a third branch and a fourth branch, one end of the third branch is connected with one end of the fourth branch, the other end of the third branch is connected with the first water inlet, and the other end of the fourth branch is connected with the second water inlet; the fluid driving assembly comprises a first pump and a second pump, the first pump is arranged on the third branch, and the second pump is arranged on the fourth branch.

After the technical scheme is adopted, the first pump is arranged on the third branch to drive water flow, the second pump is arranged on the fourth branch to drive water flow, the single-channel desalination assembly and the double-channel desalination assembly can run independently, a user can select the single-channel desalination assembly or the double-channel desalination assembly to purify water according to water requirements, and the flexibility is high. Different pumps are respectively configured for the single-channel desalting component and the double-channel desalting component, so that a proper pump can be selected according to the actual condition of each set of purification system, the debugging difficulty is reduced, and the problem of high noise can be solved.

As an improved mode, the second pipeline further comprises a collecting pipe, the collecting pipe is communicated with the first branch and the second branch, a first stop valve is installed on the collecting pipe, a second stop valve is installed on the third branch, the household water purifying equipment further comprises a first waste discharge pipe, and one end of the first waste discharge pipe is communicated with the first water inlet;

when the single-channel desalination assembly is de-energized or reverse voltage is applied, and the first pump, the first stop valve and the second stop valve are closed, water from the second water outlet of the double-channel desalination assembly reversely flushes the single-channel desalination assembly through the first branch and then is discharged from the first waste discharge pipe.

After the technical scheme is adopted, the double-flow-channel desalting component, the second branch, the first branch and the first waste discharge pipe are utilized to form the back flushing system of the single-flow-channel desalting component, so that the complex pipeline design is avoided, the structure of the household water purifying equipment is simplified, and the back flushing of the single-flow-channel desalting component is carried out by adopting the water purified by the double-flow-channel desalting component, so that a better flushing effect can be achieved.

As an improvement, the domestic water purification apparatus further comprises:

the double-flow-channel desalting assembly further comprises a waste discharge port, and the second waste discharge pipe is connected with the first waste discharge pipe and the waste discharge port;

and the second stop valve is arranged in the first waste discharge pipe and used for preventing the wastewater discharged from the waste discharge port from entering the single-channel desalting component.

After the technical scheme is adopted, the first waste discharge pipe for back flushing of the single-channel desalting component and the second waste discharge pipe for the double-channel desalting component are collected, so that the use of pipelines can be reduced, the complex pipeline design is avoided, and the structure is more compact.

As a refinement, the header is fitted with at least one of a second conductivity sensor, a first mineral sensor, and a first flow sensor.

After adopting foretell technical scheme, detect the numerical value of feedback through second conductivity sensor and/or first mineral sensor and/or first flow sensor, the user can in time know domestic water purification unit's operational aspect, in time maintains or changes domestic water purification unit's part, guarantees that drinking water is healthy.

As an improvement, the first pipeline further comprises a water supply pipe, the water supply pipe is communicated with the third branch and the fourth branch, the water supply pipe is used for supplying initial water to be purified, and the water supply pipe is provided with a first filtering assembly.

After the technical scheme is adopted, the first filtering component is arranged on the water supply pipe, and the first filtering component can perform certain purification treatment on the water entering the single-channel desalting component, for example, substances such as particle impurities and residual chlorine possibly contained in the water are removed, so that the workload and consumption of the single-channel desalting component are reduced, and the regeneration period and the service life of the single-channel desalting component are prolonged.

As a refinement, the water supply pipe is fitted with at least one of a temperature sensor, a second flow sensor and a second mineral sensor.

As a modification, the first branch is provided with a bidirectional flow meter and/or a second filter assembly.

After adopting foretell technical scheme, through set up the second filtering component on first branch road, the second filtering component can carry out certain purification treatment to the water after single current way desalination subassembly purifies, for example detach the suspended solid that aquatic probably contains, substance such as colloid, macromolecule organic matter, further promote quality of water.

As a refinement, the single-channel desalination assembly includes a physisorption desalination cartridge and/or a chemisorption desalination cartridge.

As a refinement, the chemisorption desalination filter element comprises at least one of an ion exchange resin filter element and a bipolar membrane electrodeionization filter element;

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

As a refinement, the dual-channel desalination assembly comprises at least one of a reverse osmosis membrane filter element and a nanofiltration membrane filter element.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, 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 invention, 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 view of a household water purifying apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic electrical connection diagram of the control assembly, the control valve, and the first conductivity sensor;

fig. 3 is a schematic structural view of a household water purifying apparatus according to another embodiment of the present invention;

FIG. 4 is a schematic diagram of a bipolar membrane electrodeionization cartridge desalination process;

FIG. 5 is a schematic diagram illustrating the principle of the regeneration process of the bipolar membrane electrodeionization filter.

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, of the 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 flowcharts shown in the figures are illustrative only and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, combined or partially combined, so that the actual execution order 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.

As shown in fig. 1 and 2, an embodiment of the present invention proposes a household water purification apparatus, which includes a single-channel desalination assembly 11, a double-channel desalination assembly 12, a first pipeline 13, a fluid driving assembly 14, a second pipeline 15, a control valve 16, a first conductivity sensor 17, a drain 18, and a control assembly 19. The single-channel desalination assembly 11 comprises a first water inlet 111 and a first water outlet 112, and the single-channel desalination assembly 11 purifies the water flowing in through the first water inlet 111 and discharges the treated water through the first water outlet 112. Double-flow desalination assembly 12 is connected in parallel with single-flow desalination assembly 11, double-flow desalination assembly 12 includes second water inlet 121 and second water outlet 122, double-flow desalination assembly 12 purifies water flowing in through second water inlet 121, and treated water flows out through second water outlet 122. A first conduit 13 connects the first water inlet 111 and the second water inlet 121, and a fluid driving assembly 14 is disposed in the first conduit 13, the fluid driving assembly 14 being configured to drive water to the single-channel desalination assembly 11 and the dual-channel desalination assembly 12. The second pipeline 15 includes a first branch 151 and a second branch 152, one end of the first branch 151 is connected to one end of the second branch 152, the other end of the first branch 151 is connected to the first water outlet 112, the other end of the second branch 152 is connected to the second water outlet 122, the control valve 16 is installed on the second branch 152, the control valve 16 is used for controlling on/off of the second branch 152, the first conductivity sensor 17 is installed on the second branch 152, one end of the drainage tube 18 is communicated with the second water outlet 122, and the other end is communicated with the first water inlet 111. The control module 19 is electrically connected to the first conductivity sensor 17 and the control valve 16, and when the first conductivity sensor 17 detects that the quality of the effluent from the dual-channel desalination module 12 is lower than a preset value, the control module 19 controls the control valve 16 to close so that the effluent from the second water outlet 122 flows to the single-channel desalination module 11 through the drainage tube 18 for further purification.

Wherein, one end of the drainage tube 18 is connected to the second branch 152, and one end of the drainage tube 18 is communicated with the second water outlet 122 through the second branch 152, and certainly, one end of the drainage tube 18 can also be communicated by directly connecting to the second water outlet 122. Alternatively, the first conductivity sensor 17 is installed at a section of the second branch 152 between the connection point of the drain tube 18 and the second branch 152 to the second water outlet 122, and the control valve 16 is installed at a section of the second branch 152 between the connection point of the drain tube 18 and the second branch 152 to the first branch 151.

When the household water purification device provided by the embodiment is used, the fluid driving component 14 operates to drive raw water to enter the single-channel desalination component 11 through the first branch 151 for purification, and enter the double-channel desalination component 12 through the second branch 152 for purification, purified water purified by the single-channel desalination component 11 flows to the first branch 151 through the first water outlet 112, purified water purified by the double-channel desalination component 12 flows to the second branch 152 through the second water outlet 122, and purified water in the first branch 151 and purified water in the second branch 152 are converged and then output for a user to drink. When a user takes a cup of water, if the first conductivity sensor 17 detects that the quality of the outlet water of the double-channel desalination assembly 12 is lower than a preset value, the control assembly 19 controls the control valve 16 to be closed, the water purified by the double-channel desalination assembly 12 is transferred to the drainage tube 18 and flows to the single-channel desalination assembly 11 through the drainage tube 18 for secondary purification, and the purified water is output for the user to drink. When the dual-channel desalination assembly 12 is operated for a period of time, the first conductivity sensor 17 detects that the quality of the effluent from the dual-channel desalination assembly 12 meets a preset value, and the control assembly 19 controls the control valve 16 to reopen.

The domestic water purification equipment that this embodiment provided, through set up first conductivity sensor 17 and control valve 16 on second branch road 152, through setting up drainage tube 18 one end and second delivery port 122 intercommunication, the other end and first water inlet 111 intercommunication, and through setting up when first conductivity sensor 17 detects the play water quality of water of double-flow-channel desalination subassembly 12 and is less than the default, 19 control valve 16 of control subassembly control close so that the water that flows out from second delivery port 122 flows to single-flow-channel desalination subassembly 11 through drainage tube 18 and purifies once more, through twice purification treatment, can effectively solve first cup water and contain the problem that salt composition is higher than normal, guarantee that drinking water is healthy, avoid the waste of water resource simultaneously.

In some embodiments, the single-channel desalination assembly 11 comprises a physisorption desalination cartridge and/or a chemisorption desalination cartridge. The dual-channel desalination assembly 12 includes at least one of Reverse Osmosis (RO) filter elements, nanofiltration (NF) filter elements.

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

illustratively, the physisorption desalination filter element includes at least one of a Capacitive Desalination (CDI) filter element, a Membrane Capacitive Desalination (MCDI) filter element.

The electric-driven single-channel desalting filter element can be called an electric-driven single-channel desalting filter element. The reverse osmosis membrane filter core can realize the purification treatment of water when exerting pressure, can be called pressure drive binary channels desalination filter core.

Specifically, as shown in fig. 4 and 5, the bipolar membrane electrodeionization filter cartridge 200 includes one or more pairs of electrodes 210, and at least one bipolar membrane 220 or a plurality of spaced bipolar membranes 220 is disposed between at least one pair of electrodes 210. The bipolar membrane 220 includes a cation exchange membrane 221 and an anion exchange membrane 222, and the cation exchange membrane 221 and the anion exchange membrane 222 are oppositely disposed and combined together. For example, the bipolar membrane 220 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 221 and the anion exchange membrane 222 on one bipolar membrane 220, for example, water does not pass between the cation exchange membrane 221 and the anion exchange membrane 222 on the same bipolar membrane 220 when passing through the bipolar membrane electrodeionization filter cartridge 200.

As shown in fig. 4 and 5, the pair of electrodes 210 includes a first electrode 211 and a second electrode 212, wherein the first electrode 211 is disposed opposite to a cation exchange membrane 221 of the bipolar membrane 220 adjacent to the first electrode 211, and the second electrode 212 is disposed opposite to an anion exchange membrane 222 of the bipolar membrane 220 adjacent to the second electrode 212.

Fig. 4 is a schematic diagram showing the operation principle of the bipolar membrane electrodeionization filter element 200 in the process of purifying water. Here, the potential of the first electrode 211 is higher than that of the second electrode 212, that is, a voltage in a forward direction is applied between the first electrode 211 and the second electrode 212. At this time, anions such as chloride ions in the raw water to be purified move towards the first electrode 211, and replace OH ", OH" in the anion exchange membrane 222 in the direction of the first electrode 211 to enter the flow channel between the adjacent bipolar membranes 220; meanwhile, cations such as Na + in the raw water move towards the second electrode 212 to replace H + in the cation exchange membrane 221 in the direction of the second electrode 212, 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. 5, when a voltage in the opposite direction is applied between the first electrode 211 and the second electrode 212, so that the potential of the first electrode 211 is lower than that of the second electrode 212, OH "and H + ions are generated on the surfaces of the cation exchange membrane 221 and the anion exchange membrane 222 of the bipolar membrane 220 under the action of the electric field, cations such as Na + inside the cation exchange membrane 221 are replaced by H + ions and move toward the first electrode 211 with a low potential, anions such as chloride ions in the anion exchange membrane 222 are replaced by OH" and move toward the second electrode 212 with 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 200. Therefore, when the power is off or reverse voltage is applied to the desalting filter elements such as the bipolar membrane electrodeionization filter element 200 and the like, cations such as Na < + > and the like and anions such as chloride ions and the like adsorbed on the bipolar membrane 220 can be released, so that salt substances in the desalting filter element 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.

As shown in fig. 3, in some embodiments, the first pipeline 13 includes a third branch 131 and a fourth branch 132, one end of the third branch 131 is connected to one end of the fourth branch 132, the other end of the third branch 131 is connected to the first water inlet 111, and the other end of the fourth branch 132 is connected to the second water inlet 121; the fluid driving assembly 14 includes a first pump 141 and a second pump 142, the first pump 141 is disposed in the third branch 131, and the second pump 142 is disposed in the fourth branch 132. The first pump 141 is used to drive the water to the single-channel desalination module 11 for purification and the second pump 142 is used to drive the water to the dual-channel desalination module 12 for purification.

In this design, the first pump 141 is disposed in the third branch 131 to drive the water flow, and the second pump 142 is disposed in the fourth branch 132 to drive the water flow, so that the single-channel desalination module 11 and the dual-channel desalination module 12 can operate independently, and a user can select the single-channel desalination module 11 or the dual-channel desalination module 12 to purify water according to the water demand, which is highly flexible. Of course, the two sets of purification systems operate simultaneously, and large-flow purified water can be improved for users.

The existing water purifier adopts a single pump to drive water to flow to the single-channel desalination assembly 11 and the double-channel desalination assembly 12, the single-channel desalination assembly 11 is suitable for occasions with large water flow and small water pressure, the double-channel desalination assembly 12 is suitable for occasions with large water pressure, and the single pump is used for supplying water to be purified for the single-channel desalination assembly 11 and the double-channel desalination assembly 12, so that the debugging is troublesome, the condition of overlarge running noise easily occurs, and the use experience is poor. In this embodiment, different pumps are respectively configured for the single-channel desalination assembly 11 and the double-channel desalination assembly 12, and a suitable pump can be selected according to the actual conditions of each set of purification system, so that the debugging difficulty is reduced, and the problem of high noise can be reduced. Of course, it is also possible for the fluid drive assembly 14 to be configured to include only one pump. Alternatively, the first pump 141 is a vane pump and the second pump 142 is a diaphragm pump.

A pressure relief valve 101 and a pressure sensor 102 are installed between the first pump 141 and the single channel desalination assembly 11. The pressure reducing valve 101 is used to reduce the pressure of the raw water from the first pump 141 to meet the pressure environment in which the single channel desalination unit 11 operates. The pressure sensor 102 is used to detect the pressure of the raw water before entering the single channel desalination module 11.

As shown in fig. 3, in some embodiments, the second pipeline 15 further includes a collecting pipe 153, the collecting pipe 153 is communicated with the first branch 151 and the second branch 152, the collecting pipe 153 is provided with a first stop valve 20, the third branch 131 is provided with a second stop valve 21, the household water purifying apparatus further includes a first waste pipe row 22, and one end of the first waste pipe row 22 is communicated with the first water inlet 111; when the single-channel desalination module 11 is de-energized or reverse-energized and the first pump 141, the first stop valve 20 and the second stop valve 21 are closed, the water from the second water outlet 122 of the dual-channel desalination module 12 is back-flushed through the first branch 151 and discharged from the first waste pipe 22 of the single-channel desalination module 11. With this design, through utilizing double-flow-channel desalination subassembly 12, second branch 152, first branch 151 and first row of useless pipe 22 to form the back flush system to single-flow-channel desalination subassembly 11, avoided complicated pipeline design, simplified domestic water purification unit's structure, adopt the water after double-flow-channel desalination subassembly 12 purifies to carry out the back flush to single-flow-channel desalination subassembly 11 moreover, can play better washing effect.

In some embodiments, as shown in FIG. 3, the domestic water purification apparatus further comprises a second waste pipe 23 and a third stop valve 24, the dual-channel desalination assembly 12 further comprises a waste outlet 123, the second waste pipe 23 connects the first waste pipe 22 and the waste outlet 123, the third stop valve 24 is mounted on the first waste pipe 22, and the third stop valve 24 is used for preventing waste water from the waste outlet 123 from entering the single-channel desalination assembly 11. With this design, by collecting the first waste discharge pipe 22 of the single-channel desalination assembly 11 and the second waste discharge pipe 23 of the dual-channel desalination assembly 12, the number of used pipelines can be reduced, the complicated pipeline design can be avoided, and the structure can be more compact. Of course, it is also possible to separately and independently discharge the first and second waste discharge pipes 22 and 23.

As shown in FIG. 3, in some embodiments, the header 153 is fitted with at least one of the second conductivity sensor 25, the first mineral sensor 26, and the first flow sensor 27. With this design, through the numerical value that second conductivity sensor 25 and/or first mineral sensor 26 and/or first flow sensor 27 detected the feedback, the user can in time know domestic water purification unit's operational aspect, in time maintains or changes domestic water purification unit's part, guarantees that drinking water is healthy. Of course, the values detected by the second conductivity sensor 25 and/or the first mineral sensor 26 and/or the first flow sensor 27 may also be used as a reference for the control assembly 19 to control the operation of other components.

As shown in fig. 3, in some embodiments, the first pipeline 13 further includes a water supply pipe 133, the water supply pipe 133 is communicated with the third branch 131 and the fourth branch 132, the water supply pipe 133 is used for supplying the initial water to be purified, and the water supply pipe 133 is installed with the first filtering assembly 28.

Optionally, the first filter assembly 28 may include a PP cotton filter element and/or an activated carbon filter element. The first filtering assembly 28 on the water supply line 133 can purify the water entering the single channel desalination assembly 11 to a certain extent, for example, remove particulate impurities, residual chlorine, etc. that may be contained in the water, reduce the workload and consumption of the single channel desalination assembly 11, and prolong the regeneration cycle and service life thereof.

As shown in fig. 3, in some embodiments, the water supply pipe 133 is fitted with at least one of a temperature sensor 29, a second flow sensor 30 and a second mineral sensor 31. In this way, the user can have a preliminary knowledge of the raw water entering the domestic water purification apparatus by detecting the feedback values by the temperature sensor 29 and/or the second flow sensor 30 and/or the second mineral sensor 31, and of course, the values detected by the temperature sensor 29 and/or the second flow sensor 30 and/or the second mineral sensor 31 can also be used as a reference for the control module 19 to control the operation of other components.

As shown in FIG. 3, in some embodiments, first leg 151 is fitted with second filter assembly 32.

Optionally, second filter assembly 32 may include an activated carbon cartridge and/or a UF ultrafiltration membrane cartridge. The second filtering component 32 on the first branch 151 can perform a certain purification treatment on the water purified by the single-channel desalination component 11, for example, remove suspended substances, colloids, macromolecular organic substances and the like which may be contained in the water, and further improve the water quality.

As shown in fig. 3, in some embodiments, first branch 151 is fitted with a bidirectional flow meter 33. The bi-directional flow meter 33 is used to detect the flow rate of the purified water during normal operation of the single channel desalination module 11 on the one hand, and the flow rate of the incoming water during back flushing of the single channel desalination module 11 on the other hand. Of course, two one-way flow meters may be provided for detecting the flow rate of the purified water during the normal operation of the single-channel desalination assembly 11 and the flow rate of the inlet water during the back flushing of the single-channel desalination assembly 11, respectively, which depends on the actual design requirements.

As shown in fig. 3, in some embodiments, the fourth branch 132 is fitted with a fourth shutoff valve 34.

In some embodiments, the control assembly 19 is further electrically connected to the first pump 141, the second pump 142, the second conductivity sensor 25, the first mineral sensor 26, the first flow sensor 27, the temperature sensor 29, the second flow sensor 30, the second mineral sensor 31, the pressure sensor 102, the pressure reducing valve 101, the first cut-off valve 20, the second cut-off valve 21, the third cut-off valve 24, and the fourth cut-off valve 34, and the control assembly 19 controls the operation of the first pump 141, the second pump 142, the pressure reducing valve 101, the first cut-off valve 20, the second cut-off valve 21, the third cut-off valve 24, and the fourth cut-off valve 34 according to values detected by the second conductivity sensor 25, the first mineral sensor 26, the first flow sensor 27, the temperature sensor 29, the second flow sensor 30, the second mineral sensor 31, and the pressure sensor 102 or according to a control instruction input by a user.

In some embodiments, the household water purifying apparatus further comprises a display screen, and the values detected by the second conductivity sensor 25, the first mineral sensor 26, the first flow sensor 27, the temperature sensor 29, the second flow sensor 30, the second mineral sensor 31 and the pressure sensor 102 are displayed on the display screen, so that a user can know the operation condition of the household water purifying apparatus conveniently. Furthermore, a virtual operation button can be arranged on the display screen and used for inputting an operation instruction by a user. Of course, the input of the user operation instruction is not limited to the mode of adopting virtual operation buttons on the display screen, for example, in other embodiments, the operation instruction can be input to the household water purifying apparatus through buttons, knobs, microphones and the like arranged on the household water purifying apparatus.

In some embodiments, the household water purifying apparatus further includes a raw water tank capable of storing water, and the water supply pipe 133 has one end connected to the raw water tank and the other end connected to the third and fourth branches 131 and 132.

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

Optionally, the raw water tank may further include a water injection port through which water to be purified may be added to the raw water tank. For example, the water filling port is connected with a tap water pipe. In an exemplary embodiment, the raw water tank is further provided with a liquid level meter, and when the liquid level in the raw water tank drops to a set value, the raw water tank can control a valve of the tap water pipe to open to feed water to a water feeding port of the raw water tank. Of course, the water supply pipe 133 may have one end directly connected to the tap water pipe and the other end connected to the third and fourth branches 131 and 132.

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; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. Specific meanings of the above terms in the embodiments of the present invention may 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, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A domestic water purification apparatus, comprising:

a fluid drive assembly disposed in the first conduit, the fluid drive assembly for driving water to the single-channel desalination assembly and the dual-channel desalination assembly;

the first conductivity sensor is arranged on the second branch circuit;

2. The domestic water purification apparatus of claim 1, wherein said first pipe comprises a third branch and a fourth branch, one end of said third branch being connected to one end of said fourth branch, the other end of said third branch being connected to said first water inlet, the other end of said fourth branch being connected to said second water inlet; the fluid driving assembly comprises a first pump and a second pump, the first pump is arranged on the third branch, and the second pump is arranged on the fourth branch.

3. The domestic water purification apparatus of claim 2, wherein the second pipeline further comprises a collecting pipe, the collecting pipe is communicated with the first branch and the second branch, a first stop valve is installed on the collecting pipe, a second stop valve is installed on the third branch, the domestic water purification apparatus further comprises a first waste pipe, and one end of the first waste pipe is communicated with the first water inlet;

when the single-channel desalination assembly is de-energized or reverse voltage is applied, and the first pump, the first stop valve and the second stop valve are closed, water from the second water outlet of the double-channel desalination assembly backflushs the single-channel desalination assembly through the first branch and then is discharged from the first waste pipe.

4. A domestic water purification apparatus according to claim 3, further comprising:

the double-flow-channel desalination assembly further comprises a waste discharge port, and the second waste discharge pipe is connected with the first waste discharge pipe and the waste discharge port;

and the third stop valve is arranged on the first waste discharge pipe and is used for preventing the waste water coming out of the waste discharge port from entering the single-channel desalination assembly.

5. The domestic water purification apparatus of claim 3, wherein the header is fitted with at least one of a second conductivity sensor, a first mineral sensor, a first flow sensor.

6. The domestic water purification apparatus of claim 2, wherein said first conduit further comprises a water supply pipe in communication with said third branch and said fourth branch, said water supply pipe for supplying initial water to be purified, said water supply pipe being fitted with a first filter assembly.

7. The domestic water purification apparatus of claim 6, wherein said water supply pipe is fitted with at least one of a temperature sensor, a second flow sensor and a second mineral sensor; and/or the first and/or second light-emitting diodes are arranged in the light-emitting diode,

the first branch is provided with a bidirectional flowmeter and/or a second filtering component.

8. The domestic water purification apparatus of claim 1, 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;

10. The domestic water purification apparatus of claim 1, wherein said dual-flow desalination assembly comprises at least one of a reverse osmosis membrane filter cartridge, a nanofiltration membrane filter cartridge.