CN114873661A - Waterway system and control method for waterway system - Google Patents

Abstract

The invention provides a waterway system and a control method for the waterway system. Waterway system gets water end, dense water and gets water end and dense water discharge end including intaking end, water purification, waterway system still includes: the water purification module comprises a pretreatment filter element, a concentrated water container, a first pipeline and a second pipeline, wherein the concentrated water container is provided with a water inlet and a first water outlet, the water inlet is connected to a concentrated water outlet through the pretreatment filter element, the first pipeline is connected between the first water outlet and a concentrated water taking end, a first control valve and a water pump are arranged on the first pipeline, the second pipeline is connected between the first water outlet and a concentrated water discharging end, and a second control valve is arranged on the second pipeline. Concentrated water is treated by the pretreatment filter element, so that the service life of the water purification module is not influenced on the premise of ensuring the utilization rate of the concentrated water. Through setting up the dense water container, can convenience of customers get the usefulness to dense water, the water economy resource.

Description

Waterway system and control method for waterway system

Technical Field

The invention relates to the technical field of concentrated water recovery, in particular to a waterway system and a control method for the waterway system.

Background

Along with the progress of society, people have stronger and stronger awareness on saving water resources.

Taking a water purifier with a reverse osmosis filter element as an example, when purified water is prepared, a certain amount of concentrated water is generated. The concentrated water cannot be directly drunk, so the water purifier usually discharges the concentrated water, but the waste of water resources is caused. In order to avoid waste, the existing water purifier carries out secondary filtration before the concentrated water flows back to the reverse osmosis filter element to generate purified water, and the utilization rate of the concentrated water is improved.

However, the concentrated water is filtered for the second time, so that the scale in the pipeline and in the reverse osmosis filter element is accelerated to form, the service life of the reverse osmosis filter element is shortened, the water purifier is damaged, and the use of the water purifier is not facilitated for users.

Disclosure of Invention

In order to at least partially solve the problems in the prior art, according to one aspect of the present invention, there is provided a waterway system including a water inlet end, a water purification and taking end, a concentrate taking end and a concentrate discharge end, the waterway system further including: the water purification module is provided with a raw water inlet, a purified water outlet and a concentrated water outlet, the raw water inlet is connected to the water inlet end, and the purified water outlet is connected to the purified water taking end; and the concentrated water module comprises a pretreatment filter element, a concentrated water container, a first pipeline and a second pipeline, the concentrated water container is provided with a water inlet and a first water outlet, a concentrated water outlet is communicated to the water inlet of the pretreatment filter element, the water outlet of the pretreatment filter element is communicated to the water inlet, the first pipeline is connected between the first water outlet and a concentrated water taking end, the first pipeline is provided with a first control valve and a water pump, the second pipeline is connected between the first water outlet and a concentrated water discharging end, and the second pipeline is provided with a second control valve.

The waterway system is provided with a water purification module and a concentrated water module. The concentrated water generated by the water purification module can be treated by the pretreatment filter element and then stored in a concentrated water container in the concentrated water module. When the user needs to use the concentrated water, the concentrated water can be discharged for use through the first pipeline. If the concentrated water in the concentrated water container is not needed, the concentrated water can be discharged through the second pipeline. From this, have this waterway system who sets up, in order to improve the utilization ratio of dense water, can handle dense water through the preliminary treatment filter core, compare with the dense water backward flow to the water purification module, carry out secondary filter waterway system, owing to can not utilize the water purification module to filter dense water, so can not influence the life of water purification module. Through set up the dense water container in the dense water module, can also store the dense water that the water purification module generated to can conveniently take when the user needs, the water economy resource.

Illustratively, the first water outlet is arranged at the bottom of the concentrated water container.

The effect of first delivery port is can be with the dense water discharge in the dense water container, so set up first delivery port in the bottom of dense water container, can be favorable to the dense water evacuation in the dense water container, reduce the residual water in the dense water container as far as possible to the dense water of collection is more fresh in guaranteeing the dense water container, improves user's use and experiences.

Illustratively, the bottom surface of the concentrated water container is an inclined surface, and the first water outlet is arranged at the lower part of the inclined surface.

The concentrated water container with the arrangement can discharge concentrated water from the concentrated water container to the maximum extent, and reduce the residue of the concentrated water in the concentrated water container.

Illustratively, the concentrated water container is provided with a second water outlet, the height of which is not higher than that of the water inlet and is higher than that of the first water outlet, and the concentrated water module further comprises a third pipeline which is connected between the second water outlet and the concentrated water discharge end.

When the liquid level in the concentrated water container reaches the height of the second water outlet, the concentrated water can be discharged through the second water outlet and flows to the concentrated water discharge end through the third pipeline, so that the concentrated water amount in the concentrated water container is limited. Thus, the concentrated water in the concentrated water container can be prevented from overflowing the concentrated water container due to excessive concentrated water. In addition, the height of the second water outlet can be not higher than that of the water inlet, so that the liquid level in the concentrated water container can not generate pressure resistance on the concentrated water outlet, and the operation of the water purification module can not be influenced.

The waterway system also comprises a detector and a controller, wherein the detector is used for detecting the water taking stopping operation of the concentrated water taking end and generating a water taking stopping signal, and the controller is used for controlling the second control valve to be opened when the water taking stopping time length reaches the first threshold value according to the water taking stopping signal.

The waterway system with the setting detects the water taking stopping operation of a user by using the detector and generates a water taking stopping signal, the controller starts to time the time length of stopping water taking when receiving the water taking stopping signal, and discharges the concentrated water in the concentrated water container when the time length of stopping water taking reaches a first threshold value, so that the phenomenon that the normal use of the user is influenced due to the fact that the concentrated water is stored in the concentrated water container for a long time and the quality of the concentrated water is deteriorated or microorganisms exceed the standard is avoided.

Illustratively, the detector includes a check valve and a high-pressure switch that are arranged in that order along the water flow direction, and the detector is arranged on the first pipeline and is located downstream of the first control valve and the water pump.

The waterway system with the arrangement can utilize the high-voltage switch to respond to the operation of starting to fetch water and stopping to fetch water of a user to generate a corresponding signal for starting to fetch water and a signal for stopping to fetch water, and the controller can control the first control valve, the water pump and the second control valve based on the signal for starting to fetch water and the signal for stopping to fetch water, so the waterway system can be applied to the waterway system with the mechanical faucet, and the application range of the waterway system is expanded.

The controller is further configured to control the second control valve to close when the opening duration of the second control valve reaches a second threshold, the second threshold being greater than or equal to a time taken to drain the maximum volume of the concentrated water in the concentrated water container.

Through setting up the second threshold value, the controller can be automatically controlled the second control valve to guarantee after the dense water in dense water container drains, close the second control valve, make dense water container can continue to store dense water.

Illustratively, a combined flushing valve is arranged on a pipeline between the concentrated water outlet and the water inlet of the pretreatment filter element or a pipeline between the water outlet of the pretreatment filter element and the water inlet of the concentrated water container.

Through setting up the combination flushometer, can conveniently control the raw water and wash the water purification module.

Illustratively, the pretreatment cartridge has a scale inhibitor therein.

Because the salt content in the concentrated water is higher and the hardness of the water quality is relatively higher, the concentrated water is easy to generate more scales in pipelines, containers and parts to cause the phenomena of dirt blockage and the like, and the water quality of the concentrated water can be softened after the concentrated water passes through the pretreatment filter element with the scale inhibitor, thereby reducing the generation of the scales.

Illustratively, the water pump is a booster pump.

Compared with a common water pump, the booster pump can idle for a short time without burning. Therefore, after the concentrated water in the concentrated water container is emptied, the concentrated water can continue to rotate for a certain time without arranging devices such as a low-voltage switch and the like for preventing the water pump from idling, and the cost of the product is reduced.

Illustratively, the water purification module includes that the third control valve, leading filter core, booster pump and the reverse osmosis filter core of establishing ties in proper order along the rivers direction, and the water inlet of leading filter core forms the raw water inlet, and the water purification mouth of reverse osmosis filter core forms the pure water export, and the dense mouth of a river of reverse osmosis filter core forms the dense water export.

The third control valve can be a water inlet electromagnetic valve and is used for controlling raw water of the waterway system to enter. The preposed filter element can adsorb hypochlorous acid in raw water, and protects a downstream reverse osmosis filter element. In addition, the preposed filter element can also be used for carrying out primary filtration on larger granular impurities, organic matters, microorganisms and the like in raw water, and the microorganisms are prevented from breeding due to the long-time use of the concentrated water container. The booster pump can improve the pressure of raw water entering the reverse osmosis filter element so as to improve the filtering capacity of the reverse osmosis filter element.

According to another aspect of the present invention, there is provided a control method for a waterway system, the waterway system including a water inlet end, a purified water taking end, a concentrated water taking end and a concentrated water discharging end, the waterway system further including a water purifying module and a concentrated water module, the water purifying module having a raw water inlet, a purified water outlet and a concentrated water outlet, the raw water inlet being connected to the water inlet end, the purified water outlet being connected to the purified water taking end; and the dense water module includes the preliminary treatment filter core, dense water container, first pipeline and second pipeline, dense water container has water inlet and first delivery port, dense water export communicates to the water inlet of preliminary treatment filter core, the delivery port of preliminary treatment filter core communicates to the water inlet, first tube coupling is between first delivery port and dense water intaking end, be provided with first control valve and water pump on the first pipeline, the second tube coupling is between first delivery port and dense water discharge end, be provided with the second control valve on the second pipeline, the control method includes: detecting the starting water taking operation of a concentrated water taking end and generating a starting water taking signal; controlling the first control valve to open and controlling the water pump to work according to the water taking starting signal; detecting the water taking stopping operation of a concentrated water taking end and generating a water taking stopping signal; controlling the first control valve to close and controlling the water pump to stop working according to the water taking stopping signal; controlling a second control valve to be opened when the water taking stopping time length is determined to reach a first threshold value according to the water taking stopping signal; and controlling the second control valve to close.

Illustratively, the step of controlling the second control valve to close comprises: and controlling the second control valve to be closed when the opening duration of the second control valve reaches a second threshold value, wherein the second threshold value is larger than or equal to the time taken for exhausting the maximum volume of the concentrated water in the concentrated water container.

A series of concepts in a simplified form are introduced in the summary of the invention, which is described in further detail in the detailed description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The advantages and features of the present invention are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings of the invention are included to provide a further understanding of the invention. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings, there is shown in the drawings,

FIG. 1 is a schematic illustration of a waterway system according to an exemplary embodiment of the present invention; and

fig. 2 is a control flow diagram according to an exemplary embodiment of the present invention.

Wherein the figures include the following reference numerals:

101. a water inlet end; 102. a purified water taking end; 103. a concentrated water taking end; 104. a concentrated water discharge end; 200. a water purification module; 201. a raw water inlet; 202. a purified water outlet; 203. a concentrated water outlet; 210. a third control valve; 220. a preposed filter element; 230. a booster pump; 240. a reverse osmosis filter element; 300. a concentrated water module; 310. a concentrated water container; 311. a water inlet; 312. a first water outlet; 313. a second water outlet; 320. a first pipeline; 321. a first control valve; 322. a water pump; 330. a second pipeline; 331. a second control valve; 340. a third pipeline; 351. a combination flush valve; 352. pretreating a filter element; 410. a detector; 411. a check valve; 412. a high voltage switch; 420. a clean water detector; 421. a water purification check valve; 422. a high-pressure switch for pure water.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the present invention. One skilled in the art, however, will understand that the following description merely illustrates a preferred embodiment of the invention and that the invention may be practiced without one or more of these details. In other instances, well known features have not been described in detail so as not to obscure the invention.

According to one aspect of the present invention, a waterway system is provided. It is understood that the waterway system of the present invention can be applied to any suitable machine equipment, such as a water purifier, a water softener or a pipeline machine. The machine equipment with the water path system can filter water, soften water or heat water and the like. For convenience of description, the water path system will be described below by taking a water purifier as an example.

Illustratively, the waterway system may include ports such as a water inlet port 101, a clean water intake port 102, a concentrate intake port 103, and a concentrate discharge port 104. One or more of these ports may be provided with an interface by which the waterway system may be connected to external components corresponding to the function of the respective port. One or more of these ports may also be provided as a nozzle only, directly connected to the water pipe. The water inlet 101 may be used to deliver raw water to a waterway system. The clean water intake 102 may be used to provide the user with clean water produced after filtration. The concentrate withdrawal end 103 can be used to provide concentrate to the user that is produced during filtration. The concentrate discharge end 104 can be used to discharge the concentrate produced by the waterway system. In one embodiment, the water inlet end 101 may be connected to municipal water piping. The clean water intake 102 and the concentrate intake 103 may be connected to a faucet. The concentrate discharge end 104 can then be connected to the sewer of the user's home. In the embodiment that the purified water taking end 102 and the concentrated water taking end 103 are connected with the faucet, the user can take the purified water or the concentrated water by controlling the faucet. The purified water taking end 102 and the concentrated water taking end 103 can be respectively connected with two taps or can be connected on the same tap. When the purified water taking end 102 and the concentrated water taking end 103 are both connected with the same faucet, the purified water and the concentrated water can be respectively controlled through a plurality of control valves.

The waterway system may include a water purification module 200 and a concentrated water module 300. In the waterway system, the water purification module 200 may be used to prepare purified water, and the concentrated water module 300 may be used to store and utilize concentrated water.

The water purification module 200 may include a raw water inlet 201, a purified water outlet 202, and a concentrated water outlet 203. The raw water inlet 201 may be connected to the water inlet port 101. The clean water outlet 202 may be connected to the clean water intake 102.

The concentrate module 300 can include a pretreatment cartridge 352, a concentrate container 310, a first conduit 320, and a second conduit 330. The rich water container 310 may have a water inlet 311 and a first water outlet 312. The concentrate outlet 203 can be connected to the inlet of the pre-treatment cartridge 352. The outlet of the pre-treatment cartridge 352 may be connected to the water inlet 311. The first pipe 320 may be connected between the first water outlet 312 and the concentrate taking end 103. The first pipe 320 may be provided with a first control valve 321 and a water pump 322. The second pipe 330 may be connected between the first water outlet 312 and the rich water discharge end 104. A second control valve 331 may be provided on the second line 330.

In the embodiment shown in fig. 1, the water purification module 200 may include a conventional filtering device such as a filter. In addition to the reverse osmosis filter element capable of generating concentrated water during the preparation of purified water and the composite filter element formed by combining with the reverse osmosis filter element, the water purification module 200 may further include one or more of a water inlet solenoid valve, a pre-filter element and a booster pump for improving the functions of the water purification module 200. Wherein, leading filter core can include one or more in the cotton filter core of PP, active carbon filter core and the ceramic filter core. Taking the reverse osmosis filter element as an example, raw water can generate purified water after passing through the reverse osmosis filter element, and concentrated water can be generated while the purified water is generated. The clean water may be accessed by a user from the clean water intake 102. The concentrate can enter the concentrate module 300. The water purification module 200 may also employ other types of filters, as long as such filters can produce concentrated water in a certain ratio during the preparation of purified water, and the principles of the present invention may be employed.

The pre-treatment cartridge 352 in the concentrate module 300 may be a micro-filter. The pretreatment cartridge can include one or more of a PP cartridge, an activated carbon cartridge, or a ceramic cartridge. The pre-treatment filter element 352 has the functions of re-filtering the concentrated water entering the concentrated water container 310, reducing impurities in the concentrated water, and ensuring the cleanliness of the concentrated water stored in the concentrated water container 310, so as to help the concentrated water to be stored in the concentrated water container 310 for a long time. Preferably, the pretreatment filter element 352 can have a scale inhibitor therein. Because the salt content in the concentrated water is higher and the hardness of the water quality is relatively higher, the concentrated water is easy to generate more scales in pipelines, containers and parts to cause the phenomena of dirt blockage and the like, and the water quality of the concentrated water can be softened after the concentrated water passes through the pretreatment filter element 352 with the scale inhibitor, thereby reducing the generation of the scales. Of course, the pre-treatment cartridge 352 should preferably not have significant pressure resistance to impede concentrate exiting through the concentrate outlet 203.

The concentrate container 310 in the concentrate module 300 can include one or more of a water tank and a pressure tank. The concentrated water can be introduced into the concentrated water container 310 through the water inlet 311. The concentrate in the concentrate container 310 can be discharged out of the concentrate container 310 through the first water outlet 312. The concentrated water can flow to the concentrated water taking end 103 through the first pipeline 320 after being discharged from the concentrated water container 310 through the first water outlet 312. Illustratively, the first control valve 321 on the first line 320 may include one or more of a solenoid valve, a hydraulic valve, a pneumatic valve, or the like. The water pump 322 on the first conduit 320 may include one or more of a vane pump, a gear pump, or a plunger pump. The first control valve 321 may control the on and off of the first line 320. The water pump 322 can pump the concentrated water in the concentrated water container 310 to the concentrated water taking end 103. The concentrate can flow to the concentrate discharge end 104 through the second pipe 330 in addition to the concentrate taking end 103 through the first pipe 320. The concentrate discharge end 104 can be used to discharge concentrate from the concentrate tank 310. A second control valve 331 may be further disposed on the second pipeline 330. The second control valve 331 may be the same as or different from the first control valve 321. The second control valve 331 may control the on and off of the second line 330.

It will be appreciated that in the embodiment shown in fig. 1, the first water outlet 312 may be a water gap, and the first pipe 320 and the second pipe 330 may be commonly connected to the first water outlet 312. In an embodiment not shown, the first water outlet 312 may also be a plurality of water outlets, and the first pipeline 320 and the second pipeline 330 may be connected to different water outlets respectively.

The use of the waterway system is described in detail below with the embodiment shown in fig. 1. Wherein, the water inlet end 101 is connected with a municipal water pipe, the purified water taking end 102 and the concentrated water taking end 103 are connected with a tap, and the concentrated water discharging end 104 is connected with a sewer.

When a user starts to take in purified water through the purified water taking end 102, raw water may enter the water purifying module 200 through the raw water inlet 201. Purified water and concentrated water are respectively generated through the water purification module 200. The produced purified water can be discharged from the purified water outlet 202 to the purified water intake end 102. The generated concentrated water can be discharged from the concentrated water outlet 203, filtered by the pretreatment filter element 352, flows to the concentrated water module 300, and enters the concentrated water container 310 through the water inlet 311. The concentrate container 310 can store concentrate. When the user is ready to begin tapping concentrate through the concentrate tapping end 103, the first control valve 321 may be opened and the water pump 322 started. The concentrate can be drawn from the concentrate container 310 through the first water outlet 312. The extracted concentrated water can flow to the concentrated water taking end 103 through the first pipeline 320 and is taken by a user. In one embodiment, if the concentrated water in the concentrated water container 310 is stored for too long, which is not beneficial to use, the second control valve 331 can be opened, and the concentrated water in the concentrated water container 310 can be discharged through the second pipe 330. The opening and closing of the second control valve 331 may be controlled by time, or a control switch may be provided to manually control the second control valve 331. Of course, it is understood that there are various reasons for discharging the concentrate, and that the storage time of the concentrate is too long is only one example, and may include too many microorganisms in the concentrate or too much concentrate in the concentrate container 310, etc.

The waterway system has a water purification module 200 and a concentrated water module 300. The concentrated water generated by the water purification module 200 may be treated by the pretreatment cartridge 352 and then stored in the concentrated water tank 310 of the concentrated water module 300. When the user needs to use the concentrated water, the concentrated water can be discharged for use through the first pipeline 320. If the concentrate in the concentrate container 310 is not needed, the concentrate can be discharged through the second pipe 330. As can be seen from this, in order to improve the utilization rate of the concentrated water, the water channel system having this arrangement can treat the concentrated water through the pretreatment filter element 352, and does not affect the service life of the water purification module 200 because the concentrated water is not filtered by the water purification module 200, compared to a water channel system in which the concentrated water is returned to the water purification module 200 and the concentrated water is secondarily filtered. Through set up dense water container 310 in dense water module 300, can also store the dense water that water purification module 200 generated to conveniently take when the user needs, the water economy resource.

For example, the first water outlet 312 can be disposed at the bottom of the thick water container 310. The first water outlet 312 is used for discharging the concentrated water in the concentrated water container 310, so that the concentrated water can be discharged as much as possible or even as much as possible by arranging the first water outlet 312 at the bottom of the concentrated water container 310. When the concentrated water in the concentrated water container 310 is discharged through the first pipeline 320 or the second pipeline 330, the concentrated water in the concentrated water container 310 can be emptied, and the residual water in the concentrated water container 310 is reduced as much as possible, so that the concentrated water collected in the concentrated water container 310 is ensured to be fresh, and the use experience of a user is improved. It is understood that the bottom of the concentrate container 310 can include the bottom surface and can also include the lowest end of the side wall.

Further, the bottom surface of the thick water container 310 may be a slope. The first water outlet 312 may be disposed at a lower portion of the slope. In one embodiment, as shown in fig. 1, the bottom surface is high on one side and low on the other side, and the first water outlet 312 may be disposed on the lower side and at the lowest portion of the sidewall. It is of course understood that the first water outlet 312 may also be provided on the bottom surface. In an implementation not shown, the bottom surface of the thick water container 310 may be a hemisphere or an inverted cone, and the first water outlet 312 may be disposed at the lowest end of the bottom surface having the above shape. It is understood that the concentrated water container 310 having this arrangement can discharge concentrated water from the concentrated water container 310 to the maximum extent, and reduce the residual of concentrated water in the concentrated water container 310.

Exemplarily, the concentrate container 310 may be provided with a second water outlet 313. The height of the second water outlet 313 may be not higher than the height of the water inlet 311 and higher than the height of the first water outlet 312. The concentrate module 300 can also include a third conduit 340. The third pipe 340 may be connected between the second water outlet 313 and the rich water discharge end 104. In one embodiment, the function of the second water outlet 313 is to limit the storage amount of the concentrate in the concentrate container 310. When the liquid level in the concentrated water container 310 reaches the height of the second water outlet 313, the concentrated water can be discharged through the second water outlet 313 and flows to the concentrated water discharge end 104 through the third pipeline 340, so that the amount of the concentrated water in the concentrated water container 310 is limited. It is understood that the height of the second water outlet 313 is the upper limit of the liquid level of the rich water container 310, and the rich water exceeding the height is discharged out of the rich water container 310. Thus, the rich water in the rich water container 310 can be prevented from overflowing the rich water container 310. In addition, since the height of the second water outlet 313 may not be higher than the height of the water inlet 311, the liquid level in the concentrated water container 310 does not generate pressure resistance on the concentrated water outlet 203, and thus does not affect the operation of the water purification module 200.

Illustratively, the waterway system may further include a detector 410 and a controller. The detector 410 can be used to detect a water intake stop operation of the concentrate water intake end 103 and generate a water intake stop signal. The controller may be configured to control the second control valve 331 to open when it is determined that the water intake stopping time period reaches the first threshold value according to the water intake stopping signal. The detector 410 may include a pressure sensor, a flow sensor, a contact switch, or a travel switch, among others. The controller can be built by adopting electronic elements such as a timer, a comparator, a register, a digital logic circuit and the like, or can be realized by adopting processor chips such as a singlechip, a microprocessor, a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), an Application Specific Integrated Circuit (ASIC) and the like and peripheral circuits thereof. In embodiments where the faucet is an electrically controlled faucet, the detector 410 may be a proximity switch, such as a hall switch, integrated into the electrically controlled faucet. The user can control the Hall switch by rotating the faucet handle. For example, when a user is ready to take concentrated water, the electrically controlled faucet can be turned to an on state, and the controller can receive a water intake start signal sent by the hall switch. The controller can control the first control valve 321 to open and the water pump 322 to start according to the signal. The concentrate in the concentrate container 310 can be pumped to the concentrate take-off end 103 for ultimate pickup by the user. When a user wants to stop receiving concentrated water, the electric control faucet can be rotated to a cut-off state, and the controller can receive a water taking stop signal sent by the Hall switch. The controller can control the first control valve 321 to close and the water pump 322 to stop according to the signal.

The controller is also used for timing the time for stopping the water taking. When the controller receives the water getting stopping signal, the controller starts to time the water getting stopping time length, namely, the time length from the time when the water getting stopping signal is received to the current time is timed. When the water intake stop time period reaches the first threshold T1, which may be any one of 12 hours to 24 hours, for example, the first threshold T1, the controller may control the second control valve 331 to open to discharge the rich water in the rich water container 310 through the second pipe 330. It is of course understood that the control of the opening of the second control valve 331 by timing the water intake stopping time period is only one example, and the user may also manually control the opening of the second control valve 331 to discharge the concentrated water in the concentrated water container 310.

It is to be understood that the first threshold T1 is not limited to any one of 12 hours to 24 hours, and may be arbitrarily set according to the local water quality condition. And detector 410 is a hall switch, integrated with an electrically controlled faucet is but one example. In other embodiments, the detector 410 may also be other types of proximity switches or contact switches. A preferred embodiment will also be described in detail below.

Therefore, the waterway system with the setting detects the water taking stopping operation of a user by using the detector and generates a water taking stopping signal, the controller starts to time the water taking stopping time length when receiving the water taking stopping signal, and discharges the concentrated water in the concentrated water container 310 when the water taking stopping time length reaches the first threshold value, so that the influence on the normal use of the user caused by water quality deterioration or microorganism standard exceeding due to the fact that the concentrated water is stored in the concentrated water container 310 for a long time is avoided.

Further, the controller may be further configured to control the second control valve 331 to close when the opening duration of the second control valve 331 reaches a second threshold T2. The second threshold T2 may be greater than or equal to the time it takes to drain the maximum volume of concentrate in the concentrate container 310. For example, when the maximum amount of concentrated water is stored in the concentrated water container 310, the drain time is 1 minute, and then the second threshold T2 may be any value greater than or equal to 1 minute. It is of course understood that the time taken for the concentrate in the concentrate container 310 to be drained is related to the volume of the concentrate container 310, the pipe diameter of the third pipe, and the like. When the opening duration of the second control valve 331 reaches the second threshold T2, the controller may control the second control valve 331 to close. After the closing, the concentrate container 310 can continue to store the concentrate produced during the filtration process.

By setting the second threshold, the controller can automatically control the second control valve 331 to ensure that the second control valve 331 is closed after the concentrated water in the concentrated water container 310 is drained, so that the concentrated water container 310 can continue to store the concentrated water.

Preferably, the detector 410 may include a check valve 411 and a high pressure switch 412, which are sequentially disposed in a water flow direction. The detector 410 may be disposed on the first pipe 320 downstream of the first control valve 321 and the water pump 322. The check valve 411 is conducted from the concentrate container 310 to the concentrate water intake end 103. Taking the embodiment shown in fig. 1 as an example, a mechanical faucet can be arranged at the concentrate taking end 103. When the user is ready to take the concentrated water, the switch of the faucet can be turned to the conducting state, the pressure in the pipeline where the high-pressure switch 412 is located is reduced, and the controller can receive a water taking starting signal sent by the high-pressure switch 412. The first control valve 321 is opened and the water pump 322 is started and the concentrate can be taken by the user. When the user is ready to stop receiving the concentrate, the switch of the faucet can be turned to an off state. At this time, the water pump 322 still pumps water to the concentrated water intake end 103, and when the pressure in the pipeline where the high-pressure switch 412 is located reaches the tripping pressure of the high-pressure switch 412, the controller may receive the water intake stop signal sent by the high-pressure switch 412, and the controller may control the first control valve 321 to close, and the water pump 322 stops. Preferably, the water pump 322 may be a booster pump. A commonly used booster pump may be a diaphragm pump. Compared with a common water pump, the booster pump can idle for a short time without burning. Therefore, after the concentrated water in the concentrated water container 310 is emptied, the concentrated water can be continuously rotated for a certain time, and devices such as a low-voltage switch and the like do not need to be arranged for preventing the water pump 322 from idling, so that the cost of the product is reduced.

The waterway system with the arrangement can generate corresponding water taking starting signals and water taking stopping signals by the high-voltage switch 412 in response to the operation of starting water taking and stopping water taking of a user, and the controller can control the first control valve 321, the water pump 322 and the second control valve 331 based on the water taking starting signals and the water taking stopping signals, so that the waterway system can be applied to the waterway system with the mechanical faucet, and the application range of the waterway system is expanded.

Illustratively, a combination flushing valve 351 is provided on the pipeline between the concentrate outlet 203 and the inlet of the pretreatment cartridge 352, or a combination flushing valve 351 is provided on the pipeline between the outlet of the pretreatment cartridge 352 and the inlet 311 of the concentrate tank 310. When the combination flushing valve 351 is closed, raw water entering the water purification module 200 may be filtered to generate concentrated water, and the concentrated water may enter the concentrated water tank 310 through the water inlet 311. When the combination flushing valve 351 is opened, raw water entering the water purification module 200 may be directly discharged from the concentrated water outlet 203 without being filtered, and the water purification module 200 may be flushed when discharged. Raw water for flushing the water purification module 200 may also be introduced into the concentrated water tank 310 through the water inlet 311. By providing the combination flushing valve 351, the raw water can be conveniently controlled to flush the water purification module 200.

Illustratively, the water purification module 200 may include a third control valve 210, a pre-filter element 220, a booster pump 230, and a reverse osmosis filter element 240, which are sequentially connected in series in a water flow direction. The water inlet of the pre-filter 220 may form the raw water inlet 201. The clean water outlet 202 may be formed by the clean water port of the reverse osmosis cartridge 240. The concentrate outlet 203 may be formed at the concentrate outlet of the reverse osmosis cartridge 240. In the embodiment shown in fig. 1, the third control valve 210 may be a water inlet solenoid valve for controlling the inlet of raw water of the waterway system. The pre-filter element 220 may include one or more of a PP filter element, an activated carbon filter element, or a ceramic filter element, and the pre-filter element may adsorb hypochlorous acid in the raw water to protect the downstream reverse osmosis filter element. In addition, the pre-filter element can be used for primary filtering of larger particles of impurities, organic matters, microorganisms and the like in raw water, so that the microorganisms are prevented from being bred due to long-term use of the concentrated water container 310. The booster pump 230 may increase the pressure of raw water entering the reverse osmosis filter element 240 to increase the filtering capacity of the reverse osmosis filter element 240.

In an embodiment not shown, the inner wall of the concentrate container 310 can be made of a bacteriostatic material to reduce the probability of bacteria generated in the concentrate container. In addition, when the non-closed water tank is selected as the concentrated water container 310, the exhaust holes for balancing the internal pressure and the external pressure provided on the concentrated water container 310 preferably have a bacteriostatic air function, so that bacteria can be prevented from entering the concentrated water container 310 during ventilation of the concentrated water container 310.

In addition, in the waterway system, a purified water detector 420 may be further provided, and the purified water detector 420 may detect an operation of receiving purified water by a user and generate a purified water start water intake signal and a purified water stop water intake signal. The controller may control the water purification module 200 to start or stop preparing purified water according to the signal. The clean water detector 420 may include a clean water check valve 421 and a clean water high pressure switch 422. The clean water high-pressure switch 422 and the high-pressure switch 412 operate on substantially the same principle. Of course, the clean water detector 420 may further include one or more of a flow sensor, a proximity switch, and a travel switch, which will not be described in detail.

According to another aspect of the invention, a control method for the waterway system is also provided. The waterway system may include a water inlet port 101, a clean water intake port 102, a concentrate intake port 103, and a concentrate discharge port 104. The waterway system may further include a water purification module 200 and a concentrated water module 300. The water purification module 200 may have a raw water inlet 201, a purified water outlet 202, and a concentrated water outlet 203. The raw water inlet 201 may be connected to the water inlet port 101. The clean water outlet 202 may be connected to the clean water intake 102. The concentrate module 300 can include a pretreatment cartridge 352, a concentrate container 310, a first conduit 320, and a second conduit 330. The rich water container 310 may have a water inlet 311 and a first water outlet 312. The concentrate outlet 203 can be connected to the inlet of the pre-treatment cartridge 352. The outlet of the pre-treatment cartridge 352 may be connected to the water inlet 311. The first pipe 320 may be connected between the first water outlet 312 and the concentrate taking end 103. The first pipe 320 may be provided with a first control valve 321 and a water pump 322. The second pipe 330 may be connected between the first water outlet 312 and the rich water discharge end 104. A second control valve 331 may be provided on the second line 330.

Fig. 2 shows a flowchart of a control method for the waterway system, which may include, as shown in fig. 2:

the start of water intake operation of the concentrate water intake end 103 is detected and a water intake start signal is generated. Referring to step S100, when an operation of starting water intake is detected at the concentrate intake end 103, a water intake start signal is generated. Otherwise, whether the operation of starting water taking is carried out at the concentrated water taking end 103 or not is continuously detected.

The first control valve 321 is controlled to open and the water pump 322 is controlled to operate according to the water intake starting signal, see step S200.

The water taking stopping operation of the concentrated water taking end 103 is detected and a water taking stopping signal is generated. Referring to step S300, when an operation of stopping taking water is detected at the concentrate water taking end 103, a water taking stop signal is generated. Otherwise, whether the operation of stopping water taking is carried out at the concentrated water taking end 103 or not is continuously detected.

The first control valve 321 is controlled to close and the water pump 322 is controlled to stop working according to the water getting stopping signal, see step S400.

And controlling the second control valve 331 to be opened when the water getting stopping time length is determined to reach the first threshold value T1 according to the water getting stopping signal. Specifically, referring to step S500, after the water getting stop operation is detected, the water getting stop time length can be counted according to the water getting stop signal, that is, the time length from the reception of the water getting stop signal to the current time is counted. When the water withdrawal stopping time period reaches the first threshold value T1, the second control valve 331 is opened to discharge the rich water in the rich water container 310, see step S600, and if the water withdrawal stopping time period does not reach the first threshold value T1, the process may return to step S500.

When the concentrated water in the concentrated water container 310 is discharged or the concentrated water discharge amount reaches a preset value, the second control valve 331 may be further controlled to be closed, see step S700.

For example, the step S700 of controlling the second control valve to close may further include:

when the opening period of the second control valve 331 reaches the second threshold T2, the second control valve 331 is controlled to close. Wherein the second threshold T2 may be greater than or equal to the time it takes to drain the maximum volume of concentrate in the concentrate container 310.

The following is described in detail with reference to a schematic diagram of an exemplary embodiment of a waterway system as shown in fig. 1 and a control flow diagram of an exemplary embodiment of a waterway system as shown in fig. 2.

When the water purifier is in a standby state, the first control valve 321 is closed, and the water pump 322 stops working. At this time, a certain amount of concentrate may be stored in the concentrate container 310. In step S100, the high-pressure switch 412 may detect the start of the water intake operation of the concentrate intake port, such as the user turning on the switch of a concentrate tap. The high voltage switch 412 may generate a start water intake signal in response to a start water intake operation. In step S200, the controller may control the first control valve 321 to open according to the water intake start signal, and the water pump 322 operates, so that the user may take in the concentrated water. If the high-voltage switch 412 does not detect the start of the water intake operation of the concentrate water intake end, the process proceeds to step S100. In the process of accessing the concentrated water by the user, the high-voltage switch 412 can detect the water-fetching stop operation of the concentrated water-fetching end, such as the switch of the concentrated water tap closed by the user, and execute step S300. The high voltage switch 412 may generate a water intake stop signal in response to a water intake stop operation. In step S400, the controller may control the first control valve 321 to close according to the water intake stop signal, and the water pump 322 may stop operating. When the controller receives the water getting stop signal, it may start to time the water getting stop time length, that is, time the time length from the time when the water getting stop signal is received to the current time, and execute step S500 to determine whether the water getting stop time length reaches the first threshold. When the water intake stopping time period reaches the first threshold T1, the controller may control the second control valve 331 to open to discharge the rich water in the rich water container 310 according to step S600. If the water getting-out stop time length does not reach the first threshold T1, the step S500 may be returned to. During the discharge of the rich water, the controller may also control the second control valve 331 to be closed to stop the discharge of the rich water. In one embodiment, the controller may control the closing of the second control valve 331 according to the opening period of the second control valve 331. When the opening duration of the second control valve 331 reaches the second threshold T2, the controller may control the second control valve 331 to close. The duration of the second threshold T2 may be the duration of the concentrated water container discharging the concentrated water, but may also be any duration corresponding to the amount of concentrated water that the concentrated water container needs to discharge.

It should be noted that, in this embodiment, the selection of the first threshold T1 and the second threshold T2 may be the same as that described in the corresponding section above. The detector 410 may include a check valve 411 and a high pressure switch 412, and in other embodiments not shown, may also include a flow sensor or a hall switch integrated with an electrically controlled faucet, or the like.

In the description of the present invention, it is to be understood that the directions or positional relationships indicated by the directional terms such as "front", "rear", "upper", "lower", "left", "right", "lateral", "vertical", "horizontal" and "top", "bottom", etc., are generally based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, and in the case of not making a reverse explanation, these directional terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior of the respective components as they relate to their own contours.

For ease of description, relative terms of regions such as "above … …", "above … …", "on … …", "above", etc. may be used herein to describe the regional positional relationship of one or more components or features to other components or features shown in the figures. It is to be understood that the relative terms of the regions are intended to encompass not only the orientation of the element as depicted in the figures, but also different orientations in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than those illustrated or described herein.

The present invention has been illustrated by the above embodiments, but it should be understood that the above embodiments are for illustrative and descriptive purposes only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications are within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (13)

1. The utility model provides a waterway system, its characterized in that, waterway system includes that the end of intaking, the end of fetching water of purified water, dense water fetch and dense water discharge end, waterway system still includes:

the water purification module is provided with a raw water inlet, a purified water outlet and a concentrated water outlet, the raw water inlet is connected to the water inlet end, and the purified water outlet is connected to the purified water taking end; and

the concentrated water module comprises a pretreatment filter element, a concentrated water container, a first pipeline and a second pipeline, the concentrated water container is provided with a water inlet and a first water outlet, the concentrated water outlet is communicated to the water inlet of the pretreatment filter element, the water outlet of the pretreatment filter element is communicated to the water inlet, the first pipeline is connected between the first water outlet and a concentrated water taking end, the first pipeline is provided with a first control valve and a water pump, the second pipeline is connected between the first water outlet and a concentrated water discharging end, and the second pipeline is provided with a second control valve.

2. The waterway system of claim 1, wherein the first water outlet is disposed at a bottom of the concentrate container.

3. The waterway system of claim 2, wherein the bottom surface of the concentrate container is a sloped surface, and the first water outlet is disposed at a lower portion of the sloped surface.

4. The waterway system of claim 1, wherein the concentrate container is provided with a second water outlet having a height not higher than a height of the water inlet and higher than a height of the first water outlet, and the concentrate module further comprises a third pipe connected between the second water outlet and the concentrate discharge end.

5. The waterway system of claim 1, further comprising a detector for detecting a water intake stop operation of the concentrate water intake port and generating a water intake stop signal, and a controller for controlling the second control valve to open when it is determined from the water intake stop signal that a water intake stop time period reaches a first threshold.

6. The waterway system of claim 5, wherein the detector comprises a check valve and a high pressure switch sequentially arranged along the water flow direction, and the detector is arranged on the first pipeline and is positioned at the downstream of the first control valve and the water pump.

7. The waterway system of claim 5, wherein the controller is further configured to control the second control valve to close when the opening duration of the second control valve reaches a second threshold, the second threshold being greater than or equal to a time taken to drain the maximum volume of concentrate in the concentrate container.

8. The waterway system of claim 1, wherein a combination flush valve is disposed on a conduit between the concentrate outlet and the inlet of the pretreatment cartridge, or between the outlet of the pretreatment cartridge and the inlet of the concentrate container.

9. The waterway system of claim 8, wherein the pretreatment cartridge has a scale inhibitor therein.

10. The waterway system of claim 1, wherein the pump is a booster pump.

11. The waterway system of claim 1, wherein the water purification module comprises a third control valve, a pre-filter, a booster pump and a reverse osmosis filter connected in series in the water flow direction, the water inlet of the pre-filter forms the raw water inlet, the water purifying port of the reverse osmosis filter forms the purified water outlet, and the concentrate water port of the reverse osmosis filter forms the concentrate water outlet.

12. A control method for a waterway system is characterized in that the waterway system comprises a water inlet end, a purified water taking end, a concentrated water taking end and a concentrated water discharging end, the waterway system also comprises a water purifying module and a concentrated water module, the water purifying module is provided with a raw water inlet, a purified water outlet and a concentrated water outlet, the raw water inlet is connected to the water inlet end, and the purified water outlet is connected to the purified water taking end; the concentrated water module comprises a pretreatment filter element, a concentrated water container, a first pipeline and a second pipeline, the concentrated water container is provided with a water inlet and a first water outlet, the concentrated water outlet is communicated with the water inlet of the pretreatment filter element, the water outlet of the pretreatment filter element is communicated with the water inlet, the first pipeline is connected between the first water outlet and the concentrated water taking end, the first pipeline is provided with a first control valve and a water pump, the second pipeline is connected between the first water outlet and the concentrated water discharging end, the second pipeline is provided with a second control valve,

the control method comprises the following steps:

detecting the water intake starting operation of the concentrated water intake end and generating a water intake starting signal;

controlling the first control valve to be opened and controlling the water pump to work according to the water taking starting signal;

detecting the water taking stopping operation of the concentrated water taking end and generating a water taking stopping signal;

controlling the first control valve to close and controlling the water pump to stop working according to the water taking stopping signal;

controlling the second control valve to be opened when the water taking stopping time length is determined to reach a first threshold value according to the water taking stopping signal; and

and controlling the second control valve to close.

13. The control method according to claim 12, wherein the step of controlling the second control valve to close includes:

and controlling the second control valve to be closed when the opening duration of the second control valve reaches a second threshold value, wherein the second threshold value is larger than or equal to the time taken for exhausting the maximum volume of the concentrated water in the concentrated water container.

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