CN115448387A - Water purifier and control method thereof - Google Patents

Abstract

The invention relates to the technical field of household appliances, and particularly discloses a water purifier and a control method thereof. The water purifier comprises a raw water tank, a waste water tank, a double-flow-channel desalting component and a waterway system, wherein the double-flow-channel desalting component comprises a water inlet, a first water outlet and a second water outlet; the waterway system comprises a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline and a switch assembly arranged on the fifth pipeline; the first pipeline is connected with the raw water tank and the water inlet, one end of the second pipeline is connected with the second water outlet, the other end of the second pipeline is respectively connected with the third pipeline, the fourth pipeline and the fifth pipeline, the other end of the third pipeline is connected with the waste water tank, the other end of the fourth pipeline is connected with the raw water tank, and the other end of the fifth pipeline is connected with the first pipeline; and part of the wastewater flowing out of the second water outlet enters the wastewater tank through a third pipeline, and the other part of the wastewater enters the raw water tank through a fourth pipeline. The water purifier provided by the invention realizes the recycling of waste water and improves the utilization rate of water.

Description

Water purifier and control method thereof

Technical Field

The invention relates to the technical field of household appliances, in particular to a water purifier and a control method thereof.

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 treated by a chlorination method generally, and can effectively prevent water-borne diseases, but the tap water contains salt, impurities, residual chlorine and the like, does not have the condition of 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, water scales, 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 during purification, and the utilization rate of water is not high.

Disclosure of Invention

The embodiment of the invention aims to provide a water purifier and a control method thereof, and aims to solve the problem that the existing water purifier is low in water utilization rate.

In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:

the water purifier comprises a raw water tank, a waste water tank, a double-flow-channel desalination assembly and a waterway system;

the double-flow-channel desalting assembly comprises a water inlet, a first water outlet and a second water outlet, the double-flow-channel desalting assembly is used for purifying water flowing in from the water inlet, the treated pure water flows out from the first water outlet, and the treated wastewater flows out from the second water outlet;

the waterway system comprises a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline and a switch component which is arranged on the fifth pipeline and is used for controlling the fifth pipeline to be switched on and off; the first pipeline is connected with the raw water tank and the water inlet and is used for conveying water in the raw water tank to the double-flow-channel desalting assembly; one end of the second pipeline is connected with the second water outlet, the other end of the second pipeline is respectively connected with the third pipeline, the fourth pipeline and the fifth pipeline, the other end of the third pipeline is connected with the waste water tank, the other end of the fourth pipeline is connected with the original water tank, and the other end of the fifth pipeline is connected with the first pipeline; when the switch assembly controls the fifth pipeline to be communicated, the double-flow-channel desalting assembly is flushed; when the switch assembly controls the fifth pipeline to be closed, part of wastewater flowing out of the second water outlet enters the wastewater tank through the third pipeline, and part of wastewater enters the raw water tank through the fourth pipeline.

In a possible embodiment, the diameter of the third line is smaller than the diameter of the fourth line, or the length of the third line is greater than the length of the fourth line.

In one possible embodiment, the waterway system further comprises a conductivity detection assembly disposed on the first pipeline, and the conductivity detection assembly is used for detecting the water quality corresponding to the water flowing into the double-channel desalination assembly.

In a possible embodiment, the water purifier further comprises a control device connected to the switch assembly, and the control device is used for controlling the switch assembly to be turned on/off according to the water quality corresponding to the water flowing into the double-channel desalination assembly detected by the conductivity detection assembly.

In one possible embodiment, the switch assembly comprises a solenoid valve; when the water quality corresponding to the water flowing into the double-flow-channel desalting assembly meets the preset water quality requirement, the control device controls the electromagnetic valve to be closed so as to disconnect the fifth pipeline; when the water quality corresponding to the water flowing into the double-flow-channel desalting assembly does not meet the preset water quality requirement, the control device controls the electromagnetic valve to be opened so as to communicate the fifth pipeline.

In a possible embodiment, the waterway system further comprises a flow direction control component arranged on the third pipeline and the fourth pipeline, and the flow direction control component is used for controlling the unidirectional flow of water in the third pipeline and the fourth pipeline.

In one possible embodiment, the water purifier further comprises a drive assembly for driving water in the first conduit to the dual-channel desalination assembly.

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

In a possible embodiment, the water purifier further comprises a pure water tank, and the water path system further comprises a sixth pipeline, wherein the sixth pipeline connects the first water outlet and the pure water tank, and is used for conveying the pure water flowing out of the first water outlet to the pure water tank.

In a possible implementation mode, the water outlet of the pure water tank is connected with a plurality of water outlet pipelines, and at least one water outlet pipeline is provided with a heating device.

The control method of the water purifier comprises the following steps:

acquiring the water quality corresponding to the water flowing into the double-channel desalting assembly;

if the water quality corresponding to the water flowing into the double-channel desalting assembly meets the preset water quality requirement, controlling the fifth pipeline to be disconnected;

and if the water quality corresponding to the water flowing into the double-channel desalting assembly does not meet the preset water quality requirement, controlling the fifth pipeline to be communicated.

In one possible embodiment, the control method of a water purifier further includes:

if the TDS value corresponding to the water flowing into the double-flow-channel desalting assembly is smaller than or equal to a preset TDS threshold value, determining that the water quality corresponding to the water flowing into the double-flow-channel desalting assembly meets the preset water quality requirement;

and if the TDS value corresponding to the water flowing into the double-channel desalting assembly is larger than the preset TDS threshold value, determining that the water quality corresponding to the water flowing into the double-channel desalting assembly does not meet the preset water quality requirement.

The invention has the beneficial effects that:

the water purifier provided by the embodiment of the invention comprises a raw water tank, a waste water tank, a double-flow-channel desalting component and a waterway system, wherein the double-flow-channel desalting component comprises a water inlet, a first water outlet and a second water outlet, the double-flow-channel desalting component is used for purifying water flowing in from the water inlet, the treated pure water flows out from the first water outlet, and the treated waste water flows out from the second water outlet; the waterway system comprises a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline and a switch assembly arranged on the fifth pipeline and used for controlling the fifth pipeline to be switched on and off; the first pipeline is connected with the raw water tank and the water inlet and used for conveying water in the raw water tank to the double-flow-channel desalting assembly; one end of the second pipeline is connected with the second water outlet, the other end of the second pipeline is respectively connected with the third pipeline, the fourth pipeline and the fifth pipeline, the other end of the third pipeline is connected with the waste water tank, the other end of the fourth pipeline is connected with the original water tank, and the other end of the fifth pipeline is connected with the first pipeline; when the switch assembly controls the fifth pipeline to be communicated, the double-channel desalination assembly is flushed, and the water quality of the produced pure water is ensured; when the switch assembly controls the fifth pipeline to be closed, the wastewater flowing out of the second water outlet enters the wastewater tank through the third pipeline, and the wastewater enters the raw water tank through the fourth pipeline, so that part of the wastewater is recycled, the waste of water is avoided, and the utilization rate of the water is improved.

Drawings

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

FIG. 1 is a simplified schematic diagram of a water purifier according to a first embodiment of the present invention;

FIG. 2 is a simplified structural diagram of a solenoid valve according to a first embodiment of the present invention;

FIG. 3 is a simplified structural diagram of a flow direction control component according to a first embodiment of the present invention;

FIG. 4 is a simplified structural diagram of a driving assembly according to a first embodiment of the present invention;

FIG. 5 is a simplified schematic diagram of a water purifier according to a second embodiment of the present invention;

FIG. 6 is a simplified schematic diagram of a water purifier according to a third embodiment of the present invention;

FIG. 7 is a simplified schematic diagram of a water purifier according to a fourth embodiment of the present invention;

FIG. 8 is a schematic flow chart of a water purifier according to a first embodiment of the present invention;

reference numerals:

100. a water purifier;

10. a raw water tank;

20. a wastewater tank;

30. a dual-channel desalination assembly; 31. a water inlet; 32. a first water outlet; 33. a second water outlet;

40. a waterway system; 41. a first pipeline; 42. a second pipeline; 43. a third pipeline; 44. a fourth pipeline; 45. a fifth pipeline; 46. a switch assembly; 461. an electromagnetic valve; 47. a flow direction control part; 48. a conductivity detection component; 49. a sixth pipeline;

50. a drive assembly;

60. a pure water tank;

70. a heating device.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. 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 invention.

Example one

Fig. 1 to 4 are schematic structural views of a water purifier 100 and its components according to the present embodiment.

Referring to fig. 1, a water purifier 100 of the present embodiment includes a raw water tank 10, a waste water tank 20, a dual-channel desalination assembly 30, and a water channel system 40. The double-flow-channel desalination assembly 30 comprises a water inlet 31, a first water outlet 32 and a second water outlet 33, the double-flow-channel desalination assembly 30 purifies water flowing in from the water inlet 31, the treated pure water flows out from the first water outlet 32, and the treated wastewater flows out from the second water outlet 33.

The waterway system 40 includes a first pipeline 41, a second pipeline 42, a third pipeline 43, a fourth pipeline 44, a fifth pipeline 45, and a switch assembly 46 disposed on the fifth pipeline 45 for controlling the on/off of the fifth pipeline 45. A first conduit 41 connects the raw water tank 10 with the water inlet 31, the first conduit 41 being for conveying water in the raw water tank 10 to the dual-channel desalination assembly 30. One end of the second pipeline 42 is connected with the second water outlet 33, and the other end is respectively connected with the third pipeline 43, the fourth pipeline 44 and the fifth pipeline 45. The other end of the third pipeline 43 is connected with the waste water tank 20, the other end of the fourth pipeline 44 is connected with the raw water tank 10, and the other end of the fifth pipeline 45 is connected with the first pipeline 41. Flushing the dual-channel desalination assembly 30 when the switch assembly 46 controls the fifth conduit 45 to communicate; when the switch assembly 46 controls the fifth pipeline 45 to be closed, part of the waste water flowing out of the second water outlet 33 enters the waste water tank 20 through the third pipeline 43, and part of the waste water enters the raw water tank 10 through the fourth pipeline 44. The separation of raw water and waste water is realized, so that the quality of the produced pure water is ensured, the waste water is recycled, the waste of water is avoided, and the utilization rate of the water is improved.

As one possible implementation manner of this embodiment, the dual-channel desalination assembly 30 includes at least one of a Reverse Osmosis (RO) filter element, a Nanofiltration (NF) filter element, an Ultrafiltration (UF) filter element, and an electrodialysis filter element. The reverse osmosis membrane filter element and the nanofiltration membrane filter element can realize the purification treatment of water when applying pressure.

As a possible implementation of this embodiment, the diameter of the third pipeline 43 is smaller than the diameter of the fourth pipeline 44. In a colloquial manner, the third pipeline 43 may be a thin pipe, and the fourth pipeline 44 may be a thick pipe.

Alternatively, the length of the third pipe 43 is greater than the length of the fourth pipe 44. That is, the third pipeline 43 may be a long pipe, and the fourth pipeline 44 may be a short pipe.

The purpose of the third pipeline 43 is to increase the resistance of the third pipeline 43 and to make more water enter the fourth pipeline 44 and then flow into the raw water tank 10, regardless of whether the diameter of the third pipeline 43 is smaller than the diameter of the fourth pipeline 44 or the length of the third pipeline 43 is larger than the length of the fourth pipeline 44.

Referring to fig. 2, as a possible implementation manner of the present embodiment, the switch assembly 46 may include a solenoid valve 461, and when the solenoid valve 461 is opened, the fifth pipeline 45 is communicated; when the solenoid valve 461 is closed, the fifth line 45 is disconnected.

Referring to fig. 3, as a possible implementation manner of the present embodiment, the waterway system 40 further includes a flow direction control component 47 disposed on the third pipeline 43 and the fourth pipeline 44. The flow direction control unit 47 of the third pipe 43 is used to control the water in the third pipe 43 to flow in one direction, only allowing the water in the second pipe 42 to flow to the waste water tank 20 through the third pipe 43, and prohibiting the water in the waste water tank 20 from flowing to the second pipe 42 through the third pipe 43. The flow direction control part 47 on the fourth pipeline 44 is used for controlling the water in the fourth pipeline 44 to flow in one direction, only allowing the water in the second pipeline 42 to flow to the raw water tank 10 through the fourth pipeline 44, and forbidding the water in the raw water tank 10 to flow to the second pipeline 42 through the fourth pipeline 44.

For example, the flow direction control part 47 may include a check valve, and the like.

Referring to fig. 4, as a possible implementation manner of the present embodiment, the water purifier 100 further includes a driving assembly 50, and the driving assembly 50 is used for driving the water in the first pipeline 41 to flow into the dual-channel desalination assembly 30 for purification treatment.

As one possible implementation of this embodiment, a drive assembly 50 is coupled to the dual-flow desalination assembly 30, and the drive assembly 50 drives the water in the first conduit 41 to the dual-flow desalination assembly 30.

Illustratively, the drive assembly 50 may include a pressure pump.

As one possible implementation of this embodiment, the dual-flow desalination assembly 30 is removably received within the water purifier 100 such that the dual-flow desalination assembly 30 can be removed from the water purifier 100 for flushing when desired, thereby allowing regeneration of the filter elements of the dual-flow desalination assembly 30.

As a possible implementation manner of this embodiment, the raw water tank 10 includes a transparent housing or a transparent window is provided on the housing, so that a user can conveniently check the water quality, the water level, and the like in the raw water tank.

Illustratively, the raw water tank 10 may further include a water filling 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.

Illustratively, the raw water tank 10 is further provided with a liquid level meter, and when the liquid level in the raw water tank 10 drops to a set value, the liquid level meter can control a valve of a tap water pipe to open to add water to a water filling port of the raw water tank 10.

For example, the water stored in the raw water tank 10 may flow into the dual-channel desalination assembly 30 through the first pipe 41, and the dual-channel desalination assembly 30 purifies the inflow water.

It will be understood that the first pipe 41 may be directly connected to the tap water pipe at one end and connected to the water inlet 31 at the other end.

Example two

Referring to fig. 5, the present embodiment differs from the first embodiment mainly in that the waterway system 40 further includes a conductivity detection component 48 disposed on the first pipeline 41. The conductivity detection assembly 48 is used to detect the quality of water corresponding to the water flowing into the dual-channel desalination assembly 30. Illustratively, the conductivity detection assembly 48 is disposed on the first pipe 41 near a side of the raw water tank 10.

For example, TDS values are water quality indicators set specifically for purified water, and represent the total soluble solids content of the water. The TDS value can reflect the water quality to a certain extent, 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.

As a possible implementation manner of this embodiment, the water purifier 100 further comprises a control device, the control device is connected with the switch assembly 46, and the control device is used for controlling the switch assembly 46 to be turned on/off according to the water quality corresponding to the water flowing into the dual-channel desalination assembly 30 and detected by the conductivity detection assembly 48.

As a possible implementation manner of this embodiment, the switch assembly 46 includes a solenoid valve 461, and the control device is connected to the solenoid valve 461. The control means controls the solenoid valve 461 to open/close by detecting the water quality corresponding to the water flowing into the dual-channel desalination assembly 30 by the conductivity detection assembly 48.

Illustratively, when the water quality corresponding to the water flowing into the dual-channel desalination assembly 30 meets the preset water quality requirement, for example, the detected TDS value is less than or equal to the preset TDS threshold value, it indicates that the water quality is better, at this time, the control device controls the electromagnetic valve 461 to close, the fifth pipeline 45 is disconnected, the water purification treatment is normally performed, a part of the wastewater in the second pipeline 42 flows into the wastewater tank 20 through the third pipeline 43, another part flows into the raw water tank 20 through the fourth pipeline 44, and then flows into the dual-channel desalination assembly 30 through the water inlet 31 again for purification treatment, so as to realize the recycling of the wastewater, avoid the water waste, and improve the water utilization rate.

When the water quality corresponding to the water flowing into the double-channel desalination assembly 30 does not meet the preset water quality requirement, for example, when the detected TDS value is greater than the preset TDS threshold value, it indicates that the water quality is poor, at this time, the control device controls the solenoid valve 461 to be opened, the fifth pipeline 45 is communicated, the water in the first pipeline 41 flows into the second pipeline 42 through the fifth pipeline 45, and the double-channel desalination assembly 30 is washed, so as to ensure the water quality of the pure water flowing out of the first water outlet 32.

As a possible implementation manner of this embodiment, the control device may include, for example, a single chip microcomputer or the like.

Illustratively, the control device may include an input device, which may include, for example, a button, a knob, a touch screen, a microphone, and the like.

Illustratively, when the control device detects a water outlet control operation through the input device, such as a user pressing a water outlet button, or sends out a voice including a water outlet command, the purified pure water from the dual-channel desalination assembly 30 can be outputted through the first water outlet 32 according to the detected water outlet control operation.

In addition to the above differences, the water purifier 100 and the structures of the components thereof provided in the present embodiment can be optimally designed with reference to the first embodiment, and will not be described in detail herein.

The operation of the water purifier 100 according to the present embodiment will be briefly described with reference to fig. 5:

(a) When the conductivity detection component 48 detects that the water quality corresponding to the water flowing into the dual-channel desalination component 30 meets the preset water quality requirement, the control device controls the electromagnetic valve 461 to be closed, the fifth pipeline 45 is disconnected, one part of the wastewater in the second pipeline 42 is input into the wastewater tank 20 through the third pipeline 43, the other part of the wastewater flows into the raw water tank 20 through the fourth pipeline 44, and then the wastewater can flow into the dual-channel desalination component 30 through the first pipeline 41 for purification treatment, so that the wastewater recycling is realized, and the water utilization rate is improved.

(b) When the conductivity detection assembly 48 detects that the water quality corresponding to the water flowing into the dual-channel desalination assembly 30 does not meet the preset water quality requirement, the control device controls the electromagnetic valve 461 to be opened, the fifth pipeline 45 is communicated, the water in the first pipeline 41 flows into the second pipeline 42 through the fifth pipeline 45, the dual-channel desalination assembly 30 is flushed, and then the water quality of the pure water generated by the water purification treatment of the dual-channel desalination assembly 30 is improved.

EXAMPLE III

Referring to fig. 6, the difference between the present embodiment and the third embodiment is that the water purifier 100 further includes a pure water tank 60, the water path system 40 further includes a sixth pipeline 49, and the sixth pipeline 49 connects the first water outlet 32 and the pure water tank 60. The sixth pipeline 49 is used for transporting the pure water flowing out of the first water outlet 32 to the pure water tank 60 for storage, so that the pure water can be used by the user at any time.

As a possible implementation manner of this embodiment, waterway system 40 further includes a filtering assembly disposed on first pipe 41 and/or a filtering assembly disposed on sixth pipe 49.

Illustratively, the filter assembly may include a PP cotton filter element and/or an activated carbon filter element. The filter assembly in the first conduit 41 is capable of purifying the water entering the dual-flow desalination assembly 30 to a certain extent, for example, to remove substances such as particulate impurities and residual chlorine, thereby reducing the workload and consumption of the dual-flow desalination assembly 30 and prolonging the regeneration period and service life thereof. The filter assembly on the sixth line 49 can further improve the quality of the pure water output by the water purifier 100.

As a possible embodiment of the present embodiment, the control device controls the operation time of the water purifier 100 according to the water quality corresponding to the water flowing into the dual-channel desalination assembly 30, that is, the water quality of the raw water supplied from the raw water tank 10. The water quality is different and accordingly, the operation time period of the water purifier 100 is different.

Illustratively, the running time of the purified water treatment adapted to the water quality can be set according to the difference of the water quality, so that the purified water can meet the requirements. For example, when the quality of water supplied from the raw water tank 10 is hard, the operation time of the water purifier 100 may be controlled to be long; when the quality of the water supplied from the raw water tank 10 is soft, the operation time period of the water purifier 100 can be controlled to be short.

That is, the operation time of the water purifier 100 is controlled in a targeted manner according to the quality of the water supplied from the raw water tank 10, thereby reducing unnecessary energy consumption and saving energy while ensuring the quality of the produced pure water.

Except for the above differences, the water purifier 100 and the structures of the components thereof provided in this embodiment can be optimally designed with reference to the third embodiment, and are not described in detail herein.

Example four

Referring to fig. 7, the present embodiment is different from the fourth embodiment mainly in that the water outlet of the pure water tank 60 is connected to a plurality of water outlet pipes, and at least one of the water outlet pipes is provided with a heating device 70.

Illustratively, the heating device 70 includes, for example, a heat exchanger or the like. The heating device 70 may heat the water flowing out of the pure water tank 60 to provide the user with hot water of a desired temperature.

As a possible implementation manner of this embodiment, a driving component 50 may be further disposed on the water outlet pipeline, and the driving component 50 is used for driving the pure water stored in the pure water tank 60 to output.

As a possible implementation manner of this embodiment, a temperature detection component may be further disposed on the water outlet pipeline, and the temperature detection component is configured to detect the temperature of the outlet water.

Except for the above differences, the water purifier 100 and the structures of the components thereof provided in the present embodiment can be optimally designed with reference to the fourth embodiment, and will not be described in detail herein.

The embodiment of the application also provides a control method of the water purifier, and the method can be used in any water purifier provided by the embodiment to improve the utilization rate of water.

Example one

As shown in fig. 8, a schematic flowchart of a control method of the water purifier provided in the present embodiment specifically includes steps S101 to S103.

S101, obtaining the water quality corresponding to the water flowing into the double-channel desalting assembly.

As one possible implementation manner of the embodiment, the water path system of the water purifier comprises a conductivity detection assembly arranged on the first pipeline, and the conductivity detection assembly is arranged on the water inlet side of the double-channel desalination assembly. The conductivity detection assembly may detect a water quality corresponding to water flowing into the dual-channel desalination assembly.

And (3) calling the conductivity detection assembly to detect the water quality, and acquiring the water quality corresponding to the water flowing into the double-channel desalting assembly.

For example, TDS values are water quality indicators set specifically for purified water, and represent the total soluble solids content of the water. The TDS value can reflect the water quality to a certain degree, and generally, the lower the TDS value is, the less soluble salts such as heavy metal ions in the water are, and the purer the water quality is. TDS values corresponding to water flowing into the dual-channel desalination assembly are obtained.

S102, if the water quality corresponding to the water flowing into the double-channel desalting assembly meets the preset water quality requirement, the fifth pipeline is controlled to be disconnected.

S103, if the water quality corresponding to the water flowing into the double-channel desalting assembly does not meet the preset water quality requirement, controlling the fifth pipeline to be communicated.

As a possible implementation manner of this embodiment, a preset TDS threshold corresponding to the water quality is preset, and the preset TDS threshold can be flexibly set according to actual situations, and is not particularly limited herein. Through detecting the TDS value that the water among the double-flow-channel desalination subassembly corresponds, the TDS value that the water that flows into among the double-flow-channel desalination subassembly that will detect corresponds is compared with presetting the TDS threshold value, if the TDS value that the water that flows into among the double-flow-channel desalination subassembly corresponds is less than or equal to and presets the TDS threshold value, then confirms that the quality of water that the water that flows into among the double-flow-channel desalination subassembly corresponds accords with preset water quality requirement, quality of water preferred. On the contrary, if the TDS value corresponding to the water flowing into the double-channel desalination assembly is larger than the preset TDS threshold value, the water quality corresponding to the water flowing into the double-channel desalination assembly is determined to be not in accordance with the preset water quality requirement, and the water quality is poor.

And when the water quality corresponding to the water flowing into the double-channel desalination assembly meets the preset water quality requirement, for example, the detected TDS value is less than or equal to a preset TDS threshold value, the fifth pipeline is controlled to be disconnected. Illustratively, the control device controls the electromagnetic valve on the fifth pipeline to close, and the fifth pipeline is disconnected. One part of the wastewater in the second pipeline is input into the wastewater tank through the third pipeline, the other part of the wastewater flows into the raw water tank through the fourth pipeline, and then the wastewater can flow into the double-channel desalting component through the first pipeline for purification treatment, so that the cyclic utilization of the wastewater is realized, and the utilization rate of the water is improved.

And when the water quality corresponding to the water flowing into the double-channel desalination assembly does not meet the preset water quality requirement, for example, the detected TDS value is greater than a preset TDS threshold value, controlling the fifth pipeline to be communicated. Illustratively, the electromagnetic valve on the fifth pipeline is controlled to be opened by the control device, and the fifth pipeline is communicated. And water in the first pipeline flows into the second pipeline through the fifth pipeline to flush the double-flow-channel desalting component, and then the quality of pure water generated by water purification treatment of the double-flow-channel desalting component is improved.

As a possible implementation manner of this embodiment, the operation time of the water purifier may be controlled according to the water quality corresponding to the water output from the raw water tank. The water quality is different, and correspondingly, the operation time of the water purifier is different.

For example, the running time of the purified water treatment adapted to the water quality can be set according to the difference of the water quality of the water purifier, so that the purified pure water can meet the requirement. For example, when the quality of water supplied by the original water tank is hard, the running time of the water purifier can be controlled to be longer; when the water quality of the water supplied by the original water tank is soft, the operation time of the water purifier can be controlled to be short.

Namely, the running time of the water purifier is controlled according to the water quality of the water purifier, the water quality of the produced pure water is ensured, unnecessary energy consumption is reduced, and energy is saved.

The above is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (12)

1. The water purifier is characterized by comprising a raw water tank, a waste water tank, a double-flow-channel desalination assembly and a waterway system;

the double-flow-channel desalting assembly comprises a water inlet, a first water outlet and a second water outlet, the double-flow-channel desalting assembly is used for purifying water flowing in from the water inlet, the treated pure water flows out from the first water outlet, and the treated wastewater flows out from the second water outlet;

the waterway system comprises a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline and a switch assembly which is arranged on the fifth pipeline and is used for controlling the fifth pipeline to be switched on and off; the first pipeline is connected with the raw water tank and the water inlet and is used for conveying water in the raw water tank to the double-flow-channel desalination assembly; one end of the second pipeline is connected with the second water outlet, the other end of the second pipeline is respectively connected with the third pipeline, the fourth pipeline and the fifth pipeline, the other end of the third pipeline is connected with the waste water tank, the other end of the fourth pipeline is connected with the raw water tank, and the other end of the fifth pipeline is connected with the first pipeline; when the switch assembly controls the fifth pipeline to be communicated, flushing the double-flow-channel desalting assembly; when the switch assembly controls the fifth pipeline to be closed, part of wastewater flowing out of the second water outlet enters the wastewater tank through the third pipeline, and part of wastewater enters the raw water tank through the fourth pipeline.

2. The water purifier as recited in claim 1, wherein a diameter of said third pipe is smaller than a diameter of said fourth pipe, or a length of said third pipe is larger than a length of said fourth pipe.

3. The water purifier of claim 1 wherein the water circuit system further comprises a conductivity detection assembly disposed on the first conduit for detecting a quality of water corresponding to water flowing into the dual-channel desalination assembly.

4. The water purifier of claim 3, further comprising a control device connected to the switch assembly, the control device being adapted to control the switch assembly to be turned on/off according to the quality of water detected by the conductivity detection assembly and flowing into the dual-channel desalination assembly.

5. The water purifier of claim 4, wherein the switch assembly includes a solenoid valve; when the water quality corresponding to the water flowing into the double-flow-channel desalting assembly meets the preset water quality requirement, the control device controls the electromagnetic valve to be closed so as to disconnect the fifth pipeline; and when the water quality corresponding to the water flowing into the double-flow-channel desalting assembly does not meet the preset water quality requirement, the control device controls the electromagnetic valve to be opened so as to communicate the fifth pipeline.

6. The water purifier of claim 1, wherein the waterway system further comprises a flow direction control component disposed on the third pipeline and the fourth pipeline, and the flow direction control component is used for controlling the unidirectional flow of water in the third pipeline and the fourth pipeline.

7. The water purifier of claim 1 further comprising a drive assembly for driving water in the first conduit to the dual-flow desalination assembly.

8. The water purifier of claim 1, wherein the dual-channel desalination assembly comprises at least one of a reverse osmosis membrane filter cartridge, a nanofiltration membrane filter cartridge, an ultrafiltration membrane filter cartridge, and an electrodialysis filter cartridge.

9. The water purifier of any one of claims 1 to 8, further comprising a pure water tank, wherein the water circuit system further comprises a sixth pipeline connecting the first water outlet with the pure water tank for delivering pure water flowing out of the first water outlet to the pure water tank.

10. The water purifier of claim 9, wherein the outlet of the pure water tank is connected with a plurality of water outlet pipelines, and at least one of the water outlet pipelines is provided with a heating device.

11. A control method of a water purifier, characterized in that the water purifier is a water purifier according to any one of claims 1 to 10, the method comprising:

acquiring the water quality corresponding to the water flowing into the double-channel desalting assembly;

if the water quality corresponding to the water flowing into the double-flow-channel desalting assembly meets the preset water quality requirement, controlling the fifth pipeline to be disconnected;

and if the water quality corresponding to the water flowing into the double-channel desalting assembly does not meet the preset water quality requirement, controlling the fifth pipeline to be communicated.

12. The method of claim 11, wherein the method further comprises:

if the TDS value corresponding to the water flowing into the double-channel desalting assembly is smaller than or equal to a preset TDS threshold value, determining that the water quality corresponding to the water flowing into the double-channel desalting assembly meets the preset water quality requirement;

and if the TDS value corresponding to the water flowing into the double-flow-channel desalting assembly is larger than the preset TDS threshold value, determining that the water quality corresponding to the water flowing into the double-flow-channel desalting assembly does not meet the preset water quality requirement.

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