CN213171586U

CN213171586U - Water purification system and water purifier

Info

Publication number: CN213171586U
Application number: CN202021552873.0U
Authority: CN
Inventors: 张辉; 王洪坤; 刘建锋; 贺素平; 杨书雄
Original assignee: Zhejiang Supor Kitchen and Bathroom Electrical Appliance Co Ltd
Current assignee: Zhejiang Supor Kitchen and Bathroom Electrical Appliance Co Ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-05-11
Anticipated expiration: 2030-07-30

Abstract

The utility model provides a water purification system and purifier. A water outlet of a booster pump of the water purification system is communicated to a raw water port of the reverse osmosis filter element, a concentrated water pipeline is communicated to a concentrated water outlet of the reverse osmosis filter element, a water path switching device controls a water inlet to be communicated with a first water outlet or a second water outlet, and a pure water outlet of the reverse osmosis filter element is communicated to a water inlet; a water-stop piece is arranged in the water storage device, the water-stop piece separates a first containing cavity and a second containing cavity which are not communicated with each other in the water storage device, the water-stop piece can move and/or deform in the water storage device so as to enable the volumes of the first containing cavity and the second containing cavity to be inversely related, a first water outlet is communicated to the first containing cavity and a water outlet end of a water purification system, and a second water outlet is communicated to the second containing cavity; the water inlet of the flow limiting pipeline is communicated with the concentrated water pipeline, the water outlet of the flow limiting pipeline is communicated with the second containing cavity, and the flow limiter is arranged on the flow limiting pipeline. The water purification system can improve the water outlet flow and can also reduce the TDS of the first cup of water received by a user.

Description

Water purification system and water purifier

Technical Field

The utility model relates to a technical field of aqueous cleaning specifically, relates to a water purification system and purifier.

Background

With the pursuit of quality of life by the public, the quality of drinking water is beginning to attract much attention. Reverse osmosis water purification systems are becoming more popular because of the fresher, more sanitary, and safer purity of the purified water produced.

Because the reverse osmosis filter element of the reverse osmosis water purification system produces water slowly, in order to improve the water outlet flow of the water purification system, the reverse osmosis filter element with large flux is usually arranged in the water purification system in the prior art.

However, the use of a high flux reverse osmosis cartridge requires a large flux booster pump or other related components to accommodate this. Thus, the large flux of the reverse osmosis filter element and the booster pump can cause the problems of the whole size increase of the water purification system, the noise increase during operation and the like. Meanwhile, the cost of the water purification system can be increased greatly, and the market competitiveness of the water purification system is reduced.

SUMMERY OF THE UTILITY MODEL

In order to at least partially solve the problems occurring in the prior art, according to an aspect of the present invention, a water purification system is provided. The water purification system comprises a booster pump, a reverse osmosis filter element and a concentrated water pipeline, wherein a water outlet of the booster pump is communicated to a raw water port of the reverse osmosis filter element, the concentrated water pipeline is communicated to a concentrated water outlet of the reverse osmosis filter element, the water purification system also comprises a water path switching device, a water storage device and a flow limiting pipeline, the water path switching device is provided with a water inlet, a first water outlet and a second water outlet, the water path switching device controls the water inlet to be communicated with the first water outlet or the second water outlet, and a pure water outlet of the reverse osmosis filter; a water-stop piece is arranged in the water storage device, the water-stop piece separates a first containing cavity and a second containing cavity which are not communicated with each other in the water storage device, the water-stop piece can move and/or deform in the water storage device so as to enable the volumes of the first containing cavity and the second containing cavity to be inversely related, a first water outlet is communicated to the first containing cavity and a water outlet end of a water purification system, and a second water outlet is communicated to the second containing cavity; the water inlet of the flow limiting pipeline is communicated with the concentrated water pipeline, the water outlet of the flow limiting pipeline is communicated with the second containing cavity, and the flow limiter is arranged on the flow limiting pipeline.

The utility model discloses an among the water purification system, can select two kinds of modes:

the first mode, when the user got the water, the pure water of reverse osmosis filter core preparation can flow into the second through the second delivery port and hold the intracavity, and the partly dense water that reverse osmosis filter core system water in-process produced simultaneously can flow into the second through the current limiter and hold the intracavity, and then extrudes the pure water of first appearance intracavity prestorage and flows out to water purification system's play water end. Therefore, part of concentrated water generated in the reverse osmosis filter element water production process can enter the second containing cavity together with pure water to extrude the water in the first containing cavity, and further the pure water in the first containing cavity can be extruded out at a larger flow rate, so that the purpose of improving the water outlet flow rate during starting is achieved. Therefore, the water purification system does not need to be provided with a reverse osmosis filter element with large flux, the water outlet flow of the water purification system can be effectively improved, the water taking time of a user is reduced, and the use experience of the user is improved. Meanwhile, after the water purification system is in standby for a long time, according to the principle that ions diffuse from a high-concentration solution to a low-concentration solution, ions in water with high TDS (solubility-fixed total amount) before the membrane of the reverse osmosis filter element gradually diffuse into pure water behind the membrane, and the pure water behind the membrane is polluted. When the next water is taken, the TDS of the water taken by the user is higher. Through this kind of setting, when the user got the water, the higher water of above-mentioned TDS can flow into the second through the second delivery port and hold the intracavity, and then extrudes the pure water that first appearance intracavity was prestored and flows out water purification system's play water end. The higher pure water of TDS in the reverse osmosis filter core can not provide the user, avoids the first glass of water that the user was accepted not up to standard.

In the second mode, when a user takes water, pure water prepared by the reverse osmosis filter element can directly flow out of the water outlet end of the water purification system through the first water outlet, and part of concentrated water generated in the water preparation process of the reverse osmosis filter element can flow into the second accommodating cavity through the flow restrictor, so that the pure water pre-stored in the first accommodating cavity is extruded out of the water outlet end of the water purification system and flows out of the water outlet end of the water purification system. Therefore, the pure water extruded by the part of the concentrated water in the first cavity and the pure water newly prepared by the reverse osmosis filter element flow out to the water outlet end of the water purification system together, and the purpose of improving the water outlet flow during starting is achieved. Therefore, the water purification system does not need to be provided with a reverse osmosis filter element with large flux, the water outlet flow of the water purification system can be effectively improved, the water taking time of a user is reduced, and the use experience of the user is improved. Simultaneously, if the TDS of the water behind the long-time standby leading to reverse osmosis filter element membrane is higher, the higher water of above-mentioned TDS can be provided the user with the pure water mixture back of storing in advance in first appearance chamber, can reduce the TDS of the first cup of water that the user accepted from this.

Therefore, the utility model provides a water purification system both can effectively improve water purification system's the discharge of water, reduces the time of user's water intaking, promotes user's use and experiences. Meanwhile, the TDS of the first cup of water taken by the user can be reduced.

Exemplarily, the water purification system further comprises a controller electrically connected to the waterway switching device, wherein the controller is used for controlling the water inlet to be communicated with the second water outlet when receiving the power-on electric signal each time; or the water purification system further comprises a first timer, the controller is electrically connected to the first timer, the first timer is used for accumulating the standby time, and the controller is used for controlling the water inlet to be communicated with the second water outlet when receiving the starting electric signal after the standby time exceeds the preset standby time threshold value. In one case, no matter whether the water purification system is in standby for a long time or not, only the first cavity of the water storage device supplies water when the water purification system is started every time. Like this, can avoid the pure water that the TDS rised to carry for the user after long-time standby. Moreover, the automatic control of the water purification system can be realized, and the user experience is better. And the control logic is relatively simple. In another case, pure water newly prepared by the reverse osmosis filter element is only conveyed to the second cavity under the condition of long standby time. The standby time is accumulated through the first timer, and the controller is used for controlling the water path switching device to enable the water inlet to be communicated with the second water outlet when the water purification system receives a starting electric signal after the standby time exceeds a preset standby time threshold value. Therefore, the automatic control of the water purification system can be realized, and pure water newly prepared by the reverse osmosis filter element can be conveyed to the second containing cavity without starting at every time, so that the energy is saved, and the user experience is better.

Illustratively, the water purification system further comprises a second timer, the controller is electrically connected to the second timer, the second timer is used for accumulating the starting time, and the controller is used for controlling the water inlet to be communicated with the first water outlet when the starting time is greater than or equal to a preset time threshold. The second timer and the controller are arranged to compare the starting time with the preset time threshold, so that the water inlet can be controlled to be communicated with the first water outlet in time, and the user can be ensured to take water uninterruptedly. Moreover, the TDS of the water taken by the user is always low, and the health of the user is guaranteed.

Illustratively, the water purification system further comprises a first pressure sensor, the controller is electrically connected to the first pressure sensor, the first pressure sensor is arranged between the first water outlet and the water outlet end, the first pressure sensor is used for detecting a first water pressure, and the controller is used for controlling the water inlet to be communicated with the first water outlet when the first water pressure is smaller than or equal to a first preset water pressure threshold value; or/and the water purification system also comprises a second pressure sensor, the controller is electrically connected to the second pressure sensor, the second pressure sensor is arranged between the second water outlet and the second cavity, the second pressure sensor is used for detecting second water pressure, and the controller is used for controlling the water inlet to be communicated with the first water outlet when the second water pressure is greater than or equal to a second preset water pressure threshold value. Through setting up first pressure sensor and controller and come first water pressure and the first preset water pressure threshold value of comparison between first delivery port and the water purification system's the play water end, can in time control water inlet and first delivery port intercommunication, ensure that user's water intaking is incessant. Moreover, the TDS of the water taken by the user is always low, and the health of the user is guaranteed. Through setting up second pressure sensor and controller come the second water pressure and the second that compare between second delivery port and the second appearance chamber and predetermine the water pressure threshold value with the second, can in time control water inlet and first delivery port intercommunication, ensure that user's water intaking is incessant. Moreover, the TDS of the water taken by the user is always low, and the health of the user is guaranteed.

Illustratively, the water purification system further comprises a flow meter, the controller is electrically connected to the flow meter, the flow meter is arranged between the second water outlet and the second cavity, or between the concentrated water outlet and the second cavity, or between the pure water outlet and the water inlet, the flow meter is used for detecting the total amount of inlet water, and the controller is used for controlling the water inlet to be communicated with the first water outlet when the total amount of inlet water is greater than or equal to a preset total amount of inlet water threshold value. Through setting up flowmeter and controller and coming the total volume of intaking that the second holds the chamber and predetermine the total volume threshold value of intaking, can in time control water inlet and first delivery port intercommunication, ensure that user's water intaking is incessant. Moreover, the TDS of the water taken by the user is always low, and the health of the user is guaranteed.

Illustratively, the water purification system also comprises a water quality detector, and the water quality detector communicates to the pure water outlet of reverse osmosis filter core for detecting the pure water quality that flows out from the pure water outlet and generating the water quality signal, and the controller electricity is connected to the water quality detector, and the controller is used for controlling the water inlet to communicate with first delivery port when the quality of pure water is qualified based on the water quality signal. The quality of the pure water is determined to be qualified by arranging the water quality detector and the controller, and the water inlet can be controlled to be communicated with the first water outlet in time, so that the user can take water uninterruptedly. Moreover, the TDS of the water taken by the user is always low, and the health of the user is guaranteed.

Illustratively, the water purification system still includes water quality detector and controller, and water quality detector communicates to the pure water outlet of reverse osmosis filter core for detect the pure water quality of water that flows out from the pure water outlet and generate the quality of water signal, and the controller electricity is connected to water route auto-change over device and water quality detector, and the controller is used for controlling the water inlet and communicates with the second delivery port when confirming pure water quality is unqualified based on the quality of water signal, and the controller is still used for controlling the water inlet and communicate with first delivery port when confirming pure water quality is qualified based on the quality of water signal. Under normal conditions, when the water purification system restarts after standing by for a long time, the TDS of the first section of pure water is higher. However, in unexpected situations, such as the life of the reverse osmosis filter element, the quality of the pure water prepared by the reverse osmosis filter element may be unqualified. Through adopting water quality detector, can detect the quality of water of the pure water that reverse osmosis filter core prepared, only qualified pure water just can directly be carried to water purification system's play water end through first delivery port. Therefore, the user can be ensured to obtain the water which is always the water with TDS meeting the standard, and the health of the user is ensured.

Exemplarily, the water purification system further comprises a water discharge pipeline, the second cavity is further communicated to a water inlet of the water discharge pipeline, a water discharge electromagnetic valve is arranged on the water discharge pipeline, and a water outlet of the water discharge pipeline is communicated to a water inlet of the booster pump or to a concentrated water pipeline. Through setting up the drainage solenoid valve, can hold the pure water of intracavity at first all or basically all outflow after, hold the water discharge of intracavity with the second to when using next time, the pure water of reverse osmosis filter core preparation and the partial dense water that system water in-process produced can also flow into the second and hold the intracavity, and water purification system still can improve the discharge.

The water purification system further comprises a controller and a high-voltage switch, wherein the high-voltage switch is connected between the first water outlet and the water outlet end of the water purification system, the controller is electrically connected to the waterway switching device, the drainage electromagnetic valve and the high-voltage switch respectively, and the controller is used for controlling the drainage electromagnetic valve to be switched on and controlling the water inlet to be communicated to the first water outlet when the high-voltage switch is switched from closed to open for the first time; and the controller is used for controlling the drainage electromagnetic valve to be opened when the high-voltage switch is changed from closed to opened for the second time. The automatic work of the drainage electromagnetic valve and the waterway switching device can be controlled by arranging the controller and the high-voltage switch so as to realize the automation of the water purification system.

Illustratively, the controller is electrically connected to the booster pump, and the controller is configured to control the booster pump to operate when the high-voltage switch is first turned from off to on, and to control the booster pump to stop operating when the high-voltage switch is second turned from on to off. The automatic work of the booster pump is controlled through the high-voltage switch, and the automation of the water purification system can be realized.

Illustratively, the water purification system further comprises a first one-way valve, the first one-way valve is arranged on the water discharge pipeline, and the first one-way valve is communicated along the water flow direction from the water inlet to the water outlet of the water discharge pipeline. When the drainage solenoid valve switches on, first check valve can make water can not flow into the second through water drainage pipe and hold the intracavity, and the second holds the water of intracavity and can discharges totally as far as possible, and the first pure water that can store as much as possible that holds the intracavity.

Illustratively, the water purification system further comprises a water discharge pipeline, the second cavity is communicated to a water inlet of the water discharge pipeline, a resistance valve is arranged on the water discharge pipeline, and a water outlet of the water discharge pipeline is communicated to a water inlet of the booster pump or communicated to a concentrated water pipeline. When the water pressure in the second cavity rises to a certain value, water can flush the resistance valve and is discharged out of the second cavity, and the water pressure is prevented from being too high to damage the structure of the water purification system. When the first containing cavity is used for storing pure water, water in the second containing cavity can be discharged out of the second containing cavity through the resistance valve, and more pure water can be stored in the first containing cavity as far as possible.

Exemplarily, the water outlet of the flow-limiting pipeline is communicated with a pipeline between the second water outlet and the second cavity, the water purification system further comprises a second one-way valve, the second one-way valve is arranged on the pipeline and is located between the second cavity and a connection point of the flow-limiting pipeline and the pipeline, and the second one-way valve is communicated along a water flow direction from the connection point to the second cavity. When the second holds the water recycle in the intracavity, the second check valve can make water can not flow outside the water purification system through dense water pipeline behind the current-limiting pipeline, prevents to cause water extravagant.

Exemplarily, the water purification system further comprises a third one-way valve, the third one-way valve is arranged on the flow limiting pipeline, and the third one-way valve is communicated along the water flow direction from the concentrated water pipeline to the second cavity. When the second holds the water recycle in the intracavity, the third check valve can make water can not flow outside the water purification system through dense water pipeline behind the current-limiting pipeline, prevents to cause water extravagant.

Illustratively, the flow-limiting pipeline is communicated to a pipeline between the second water outlet and the second cavity, the water purification system further comprises a fourth one-way valve, the fourth one-way valve is arranged on the pipeline and is located between the second water outlet and a connection point of the flow-limiting pipeline and the pipeline, and the fourth one-way valve is communicated along a water flow direction from the second water outlet to the connection point. In the moment that the water inlet and the second water outlet are communicated and switched to be communicated with the first water outlet, the fourth one-way valve can prevent concentrated water passing through the flow limiting pipeline from flowing out of the water outlet end of the water purification system through the first water outlet, so that TDS of pure water prepared by the water purification system is increased, and the health of a user is endangered.

According to another aspect of the utility model, still provide a purifier. The water purifier comprises any one of the water purifying systems.

A series of concepts in a simplified form are introduced in the disclosure, which will be described in further detail in the detailed description section. The summary of the invention 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 present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles of the invention. In the drawings, there is shown in the drawings,

fig. 1 is a schematic water circuit diagram of a water purification system according to a first exemplary embodiment of the present invention;

fig. 2 is a schematic water circuit diagram of a water purification system according to a second exemplary embodiment of the present invention;

fig. 3 is a schematic water circuit diagram of a water purification system according to a third exemplary embodiment of the present invention;

fig. 4 is a schematic water circuit diagram of a water purification system according to a fourth exemplary embodiment of the present invention;

fig. 5 is a schematic water circuit diagram of a water purification system according to a fifth exemplary embodiment of the present invention;

fig. 6 is a schematic water circuit diagram of a water purification system according to a sixth exemplary embodiment of the present invention;

fig. 7 is a schematic water circuit diagram of a water purification system according to a seventh exemplary embodiment of the present invention;

fig. 8A is a schematic view of a water storage device according to an exemplary embodiment of the present invention, wherein the second cavity is devoid of water;

FIG. 8B is a schematic view of the water storage apparatus shown in FIG. 8A, with water in the second chamber; and

fig. 9 is a schematic view of a water storage device according to another exemplary embodiment of the present invention.

Wherein the figures include the following reference numerals:

100. a water inlet electromagnetic valve; 110. a booster pump; 120. a reverse osmosis filter element; 200. 200' and a waterway switching device; 201. a first water outlet; 202. a second water outlet; 203. a water inlet; 210. a first solenoid valve; 220. a second solenoid valve; 300. 300', a water storage device; 301. a first cavity; 302. a second cavity; 310. 310', a body; 320. 320', a water stop; 400. a flow-limiting line; 410. a current limiter; 510. a first pressure sensor; 511. a high voltage switch; 520. a second pressure sensor; 530. a flow meter; 540. a water quality detector; 600. a drain line; 610. a water discharge electromagnetic valve; 700. a water outlet device; 800. a concentrated water pipeline; 810. a concentrated water electromagnetic valve; 910. a first check valve; 920. a second one-way valve; 930. a third check valve; 940. a fourth check valve; 950. a fifth check valve; 960. a resistance valve.

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 illustrates only a preferred embodiment of the invention and that the invention may be practiced without one or more of these details. In addition, some technical features that are well known in the art are not described in detail in order to avoid obscuring the present invention.

In order to improve the water outlet flow of the water purification system, the utility model provides a water purification system. Fig. 1-7 show schematic water paths of a water purification system according to seven embodiments of the present invention, wherein the arrows schematically show the flow direction of the water flow. The utility model provides a water purification system can be applied to arbitrary suitable purifier. Of course, if necessary, the utility model provides a water purification system can also be applied to other suitable equipment.

In a first preferred embodiment, as shown in fig. 1, the water purification system may include a booster pump 110, a reverse osmosis filter element 120, a concentrated water line 800, a water path switching device 200, a water storage device 300, and a restricted flow line 400.

The water outlet of the booster pump 110 may be communicated to the raw water inlet of the reverse osmosis filter element 120, and the booster pump 110 delivers the boosted water to the reverse osmosis filter element 120. Optionally, a water inlet solenoid valve 100 may be further provided upstream of the booster pump 110. It will be appreciated that the inlet solenoid valve 100 is opened when the booster pump 110 is operated and closed when the booster pump 110 is stopped. The water inlet solenoid valve 100, the booster pump 110 and the reverse osmosis cartridge 120 may employ various types of solenoid valves, booster pumps and reverse osmosis cartridges that are known in the art or may come into existence in the future. It should be noted that the filter material of the reverse osmosis filter element 120 may only include a reverse osmosis membrane; optionally, the filter material of the reverse osmosis filter element 120 may also include a composite filter material formed by combining a reverse osmosis membrane with other filter materials, that is, the reverse osmosis filter element 120 is a composite filter element combined with a reverse osmosis filter element. The concentrated water outlet of the reverse osmosis filter element 120 can be communicated to a concentrated water pipeline 800 for discharging concentrated water generated in the water production process of the reverse osmosis filter element 120.

The waterway switching device 200 may have a water inlet 203, a first water outlet 201, and a second water outlet 202. The waterway switching device 200 can control the water inlet 203 to communicate with the first water outlet 201 or the second water outlet 202. That is, the water inlet 203 can only be connected to the first water outlet 201 or the second water outlet 202. When the water inlet 203 communicates with the first water outlet 201, the water inlet 203 is cut off from the second water outlet 202; when the water inlet 203 is cut off from the first water outlet 201, the water inlet 203 communicates with the second water outlet 202. The pure water outlet of the reverse osmosis cartridge 120 may be connected to the water inlet 203. Alternatively, the waterway switching device 200 may include a three-way valve. Alternatively, referring to fig. 6 in combination, the waterway switching device 200' may also include a first solenoid valve 210 and a second solenoid valve 220 connected in parallel. The water inlet of the first solenoid valve 210 is communicated with the water inlet of the second solenoid valve 220 to form a water inlet 203; the water outlet of the first solenoid valve 210 may be a first water outlet 201; the water outlet of the second solenoid valve 220 may be the second water outlet 202. Compared with a three-way valve, the first solenoid valve 210 and the second solenoid valve 220 have the advantages of wider supply channels, larger market holding amount, and stronger universality and replaceability.

A water-stop piece can be arranged in the water storage device. The water-stop member can separate a first cavity and a second cavity which are not communicated with each other in the water storage device. The water stop can move, deform or both move and deform within the water storage device to negatively correlate the volumes of the first and second volumes. The negative correlation means that when the volume of the first cavity is increased, the volume of the second cavity is decreased; when the volume of the first cavity is reduced, the volume of the second cavity is increased accordingly.

Alternatively, as shown in fig. 8A-8B, the water storage device 300 may include a body 310 and a water stop 320. A water blocking member 320 is disposed in the body 310 to divide a space in the body 310 into a first cavity 301 and a second cavity 302 that are not communicated with each other. The water stop 320 is a bladder-like structure. The stopper 320 deforms according to the water pressure in the first and

second volumes

301 and 302. Specifically, when water flows into the first receiving chamber 301, the water pressure in the first receiving chamber 301 increases, and the water stopper 320 expands due to the water pressure, thereby squeezing out the water in the second receiving chamber 302. On the contrary, when water flows into the second cavity 302, the water pressure in the second cavity 302 increases, and the water blocking member 320 is reduced by the water pressure, so that the water in the first cavity 301 is squeezed out.

Alternatively, as shown in fig. 9, the water storage device 300 ' includes a body 310 ' and a water stopper 320 '. The water stop 320' may be a membrane-like structure. When water flows into one of the chambers, the water pressure in the chamber is increased, and the water blocking member 320' protrudes toward the other chamber under the action of the water pressure, so that the water in the chamber with low water pressure is squeezed out. Optionally, in other embodiments not shown in the drawings, the water storage device may further include any other suitable structure, for example, the water blocking member may also be made of a rigid material, and the above function is achieved by the movement of the water blocking member. Any one of the above-mentioned water storage device all can be applied to the utility model discloses an among any one kind water purification system. Alternatively, the water stop may also be movably arranged in the body, and a part of the water stop may also be made of an elastic material, so that the water stop balances the water pressure in the two chambers by moving and deforming when the water pressure in the two chambers changes.

Referring back to fig. 1, the first water outlet 201 may be connected to the first cavity 301 and the water outlet end of the water purification system. That is, the first water outlet 201, the first cavity 301 and the water outlet end of the water purification system are communicated with each other. The water outlet end of the water purification system can be connected with various types of water outlet devices 700, such as a faucet, a pipeline machine, and the like.

The water inlet of the flow limiting pipeline 400 can be communicated with the concentrated water pipeline 800. The outlet of the restricted conduit 400 may be in communication with the second volume 302. A restrictor 410 may be disposed on the restricted conduit 400. The flow restrictor 410 may comprise any suitable flow restrictor, such as a waste water ratio valve, or the like. As known to those skilled in the art, a waste water ratio valve is also required on the concentrate line 800. The waste water ratio valve on the concentrate line 800 can maintain the water pressure within the reverse osmosis cartridge 120. In the embodiment shown in the figures, the waste ratio valve is integrated within the concentrate solenoid valve 810. In the water purification system of the present invention, the water pressure in the reverse osmosis cartridge 120 needs to be maintained by the flow restrictor 410 and the waste water ratio valve. Accordingly, one skilled in the art can select the type of the waste water ratio valve on the flow restrictor 410 and the concentrate line 800 based on the performance of the reverse osmosis cartridge 120. The waste water ratio valve on the restrictor 410 and concentrate line 800 is typically preset when designing or manufacturing the installed water purification system.

In the prior art water purification system, when a user takes water, the pure water prepared by the reverse osmosis filter element 120 directly flows out to the water outlet end of the water purification system. The utility model discloses an among the water purification system, can select two kinds of modes:

in the first mode, when a user takes water, pure water prepared by the reverse osmosis filter element 120 can flow into the second cavity 302 through the second water outlet 202, and meanwhile, part of concentrated water generated in the process of preparing water by the reverse osmosis filter element 120 can flow into the second cavity 302 through the flow restrictor 410, so that the pure water pre-stored in the first cavity 301 is extruded out and flows out to the water outlet end of the water purification system. Therefore, part of the concentrated water generated in the process of producing water by the reverse osmosis filter element 120 enters the second containing cavity 302 together with the pure water to extrude the water in the first containing cavity 301, so that the pure water in the first containing cavity 301 can be extruded out at a larger flow rate, and the purpose of improving the water outlet flow rate during starting is achieved. Therefore, the water purification system does not need to be provided with a reverse osmosis filter element with large flux, the water outlet flow of the water purification system can be effectively improved, the water taking time of a user is reduced, and the use experience of the user is improved. Meanwhile, after the water purification system is in standby for a long time, according to the principle that ions diffuse from a high-concentration solution to a low-concentration solution, ions in water with a high TDS in front of the membrane of the reverse osmosis filter element 120 gradually diffuse into pure water behind the membrane, and pollute the pure water behind the membrane. When the next water is taken, the TDS of the water taken by the user is higher. Through the arrangement, when a user takes water, the water with high TDS can flow into the second cavity 302 through the second water outlet 202, and then pure water pre-stored in the first cavity 301 is extruded out and flows out to the water outlet end of the water purification system. The higher pure water of TDS in the reverse osmosis filter core can not provide the user, avoids the first glass of water that the user was accepted not up to standard.

In the second mode, when a user takes water, pure water prepared by the reverse osmosis filter element 120 can directly flow out to the water outlet end of the water purification system through the first water outlet 201, and meanwhile, part of concentrated water generated in the water preparation process of the reverse osmosis filter element 120 can flow into the second cavity 302 through the flow restrictor 410, so that the pure water pre-stored in the first cavity 301 is extruded out and flows out to the water outlet end of the water purification system. Therefore, the pure water extruded by the part of the concentrated water in the first cavity 301 and the pure water newly prepared by the reverse osmosis filter element 120 flow out to the water outlet end of the water purification system together, so as to achieve the purpose of improving the water outlet flow rate during startup. Therefore, the water purification system does not need to be provided with a reverse osmosis filter element with large flux, the water outlet flow of the water purification system can be effectively improved, the water taking time of a user is reduced, and the use experience of the user is improved. Meanwhile, if the TDS of the water after the membrane of the reverse osmosis filter element 120 is caused to be high after the standby for a long time, the water with the higher TDS can be mixed with the pure water stored in the first cavity 301 and then supplied to a user, so that the TDS of the first cup of water taken by the user can be reduced.

Preferably, the water purification system may further comprise a controller (not shown). The controller may be electrically connected to the waterway switching device 200.

Alternatively, the controller may be configured to control the waterway switching device 200 to communicate the water inlet 203 with the second water outlet 202 each time a power-on electric signal is received. In this way, pure water newly prepared by the reverse osmosis filter element 120 and part of concentrated water generated in the water preparation process can be conveyed into the second cavity 302, and pure water pre-stored in the first cavity 301 is squeezed out and conveyed to the water outlet end of the water purification system. That is, no matter whether the water purification system is in standby for a long time or not, water is supplied only from the first cavity 301 of the water storage device 300 every time the water purification system is turned on. Like this, can avoid the pure water that the TDS rised to carry for the user after long-time standby. Like this, can realize water purification system's automatic control, user uses and experiences better. And the control logic is relatively simple.

However, since it takes a certain time for the TDS of the pure water to be significantly increased due to the diffusion of the ions in front of the membrane of the reverse osmosis filter element 120 to the back of the membrane, the pure water newly prepared by the reverse osmosis filter element 120 may be directly provided to the user if the standby time is short, and the pure water newly prepared by the reverse osmosis filter element 120 may be transferred to the second receiving chamber 302 only if the standby time is long. Based on this, optionally, the water purification system may further comprise a first timer (not shown). The controller may be electrically connected to the first timer. The first timer and the controller may be integrated. The first timer may be used to accumulate the standby time period. The controller may be configured to control the water channel switching device 200 to communicate the water inlet 203 with the second water outlet 202 when the water purification system receives the power-on electric signal after the standby time exceeds the predetermined standby time threshold. The standby duration threshold may be 3 hours, 4 hours, 5 hours, etc. The standby time period threshold may be set according to the time required for the TDS of the post-membrane pure water to significantly increase due to the diffusion of the ions in front of the reverse osmosis filter element 120 membrane back to the membrane. Therefore, not only can the automatic control of the water purification system be realized, but also the pure water newly prepared by the reverse osmosis filter element 120 can be conveyed to the second cavity 302 without starting at every time, so that the energy is saved, and the user experience is better.

The water outlet means 700 may include a tap, a pipeline machine, and the like. Wherein the faucet may comprise a mechanical faucet; optionally, the faucet may also comprise an electrically controlled faucet. If the water discharging device 700 includes a mechanical cock, the water purifying system may further include a fifth check valve 950 and a high pressure switch 511. In the embodiment shown in fig. 1, the fifth check valve 950 may be replaced by the waterway switching device 200 (when the water inlet 203 is communicated with the second water outlet 202). The power-on electrical signal may be sent by high voltage switch 511. Generally, when the mechanical faucet is turned on, the high-pressure switch 511 detects that the water pressure in the pipeline where the mechanical faucet is located is lower than the set water pressure, and then sends a power-on electric signal. In another embodiment, a hall inductive switch may be disposed at the switch of the mechanical faucet, and the switch action of the mechanical faucet is converted into an electrical signal through the hall inductive switch. The electric control faucet and the pipeline machine can be connected and disconnected with a water channel through the electric control valve, the electric control valve can be controlled through the electric control switch, and when the electric control valve is operated by the electric control switch, the electric control valve also sends a starting electric signal to the controller, so that the controller can control the follow-up action of the water purification system. The above principle of the water outlet device and the power-on electric signal sent by the water outlet device is well known to those skilled in the art, and will not be described in detail.

When the water purification system is turned on, and the water inlet 203 of the waterway switching device 200 is communicated with the second water outlet 202, after all or substantially all of the pure water in the first cavity 301 flows out, the controller may control the water inlet 203 to be communicated with the first water outlet 201. The following ways can be adopted to control the communication between the water inlet 203 and the first water outlet 201:

in a preferred embodiment, the water purification system may further comprise a second timer (not shown). The controller may be electrically connected to the second timer. The second timer and the controller may be integrated. The second timer may be used to accumulate the on time, i.e. time the water inlet 203 communicates with the second water outlet 202. The controller is used for controlling the water channel switching device 200 to enable the water inlet 203 to be communicated with the first water outlet 201 when the starting-up time is greater than or equal to a preset time threshold value. The duration threshold may be 60 seconds, 70 seconds, 80 seconds, etc. The time threshold value can be set according to the performance of the water purification system. Generally speaking, the time for flowing out all or substantially all of the pure water in the first accommodating chamber 301 is stable, so that it can be ensured that all or substantially all of the pure water in the first accommodating chamber 301 flows out by setting a reasonable preset time threshold. Subsequently, the control inlet 203 communicates with the first outlet 201. The pure water continuously prepared by the reverse osmosis filter element 120 can flow out to the water outlet end of the water purification system through the first water outlet 201. The water obtained by the user at this point will be all from the freshly prepared pure water from the reverse osmosis cartridge 120. The second timer and the controller are arranged to compare the startup time with the preset time threshold, so that the water inlet 203 and the first water outlet 201 can be controlled to be communicated in time, and the user can be ensured to take water uninterruptedly. Moreover, the TDS of the water taken by the user is always low, and the health of the user is guaranteed.

In another preferred embodiment, as shown in fig. 1, the water purification system may further include a first pressure sensor 510. First pressure sensor 510 may employ various types of pressure sensors known in the art or that may occur in the future. The controller may be electrically connected to the first pressure sensor 510. The first pressure sensor 510 may be disposed between the first water outlet 201 and the water outlet end of the water purification system. The first pressure sensor 510 may be used to detect a first water pressure. The controller is used for controlling the water channel switching device 200 to enable the water inlet 203 to be communicated with the first water outlet 201 when the first water pressure is smaller than or equal to a first preset water pressure threshold value. The first predetermined hydraulic pressure threshold may be 0.1 mpa, 0.2 mpa, or the like. The first preset water pressure threshold value can be set according to the performance of the water purification system. After all or substantially all of the pure water in the first cavity 301 flows out, the water pressure between the first water outlet 201 and the water outlet end of the water purification system is low. Therefore, by setting a reasonable first preset water pressure threshold, it can be ensured that pure water in the first cavity 301 flows out completely or substantially completely. At this time, the pure water continuously prepared by the reverse osmosis filter element 120 can flow out to the water outlet end of the water purification system through the first water outlet 201. By setting the first pressure sensor 510 and the controller to compare the first water pressure between the first water outlet 201 and the water outlet end of the water purification system with the first preset water pressure threshold value, the water inlet 203 can be timely controlled to be communicated with the first water outlet 201, and it is ensured that the user can take water uninterruptedly. Moreover, the TDS of the water taken by the user is always low, and the health of the user is guaranteed.

Fig. 2 shows a schematic water path diagram of a water purification system according to a second embodiment of the present invention. Fig. 2 is basically the same as fig. 1 in principle, except that the water purification system shown in fig. 2 uses the second pressure sensor 520 to replace the first pressure sensor 510, so for brevity, only the differences between fig. 2 and fig. 1 will be described in detail herein, and for the same components, the description of the corresponding parts herein may be referred to, and will not be repeated herein for brevity.

The water purification system may also include a second pressure sensor 520. The second pressure sensor 520 may employ various types of pressure sensors known in the art or that may occur in the future. The controller may be electrically connected to the second pressure sensor 520. A second pressure sensor 520 may be disposed between the second water outlet 202 and the second volume 302. The second pressure sensor 520 may be used to detect a second water pressure. The controller is used for controlling the water channel switching device 200 to enable the water inlet 203 to be communicated with the first water outlet 201 when the second water pressure is greater than or equal to a second preset water pressure threshold value. The second predetermined hydraulic pressure threshold may be 0.6 mpa, 0.65 mpa, 0.7 mpa, or the like. The second preset water pressure threshold value can be set according to the performance of the water purification system. Through reasonable arrangement, after pure water in the first cavity 301 completely or substantially completely flows out, the water blocking member 320 cannot move and/or deform in the direction of the first cavity 301 any more, and water is injected into the second cavity 302 continuously, which causes the water pressure between the second water outlet 202 and the second cavity 302 to increase. Therefore, by setting a reasonable second preset water pressure threshold, it can be ensured that pure water in the first cavity 301 flows out completely or substantially completely. At this time, the pure water continuously prepared by the reverse osmosis filter element 120 can flow out to the water outlet end of the water purification system through the first water outlet 201. By setting the second pressure sensor 520 and the controller to compare the second water pressure between the second water outlet 202 and the second cavity 302 with the second preset water pressure threshold, the water inlet 203 can be controlled to be communicated with the first water outlet 201 in time, and it is ensured that the user can take water uninterruptedly. Moreover, the TDS of the water taken by the user is always low, and the health of the user is guaranteed.

Fig. 3 shows a schematic water path diagram of a water purification system according to a third embodiment of the present invention. Fig. 3 is basically the same as the principle of fig. 1, except that the water purification system shown in fig. 3 uses a flow meter 530 to replace the first pressure sensor 510, so for brevity, only the differences between fig. 3 and fig. 1 will be described in detail herein, and for the same components, the description of the corresponding parts in the text may be referred to, and the details will not be repeated herein for brevity.

The water purification system may further include a flow meter 530. The flow meter 530 may be any type of flow meter known in the art or that may occur in the future. The controller may be electrically connected to the flow meter 530. The flow meter 530 may be disposed between the second water outlet 202 and the second cavity 302, or between the concentrated water outlet of the reverse osmosis cartridge 120 and the second cavity 302, or between the pure water outlet of the reverse osmosis cartridge 120 and the water inlet 203. In the preferred embodiment shown in the figure, a flow meter 530 is provided at the inlet of second volume 302, which flow meter may be used to detect the total amount of water entering second volume 302. The controller is used for controlling the water channel switching device 200 to enable the water inlet 203 to be communicated with the first water outlet 201 when the total water inlet amount is larger than or equal to a preset total water inlet amount threshold value. The threshold total water inlet amount can be 300 ml, 400 ml, 500 ml and the like. The total amount of intake threshold can be set according to water purification system's performance. Generally speaking, the flow rates of the pure water and the concentrated water prepared by the reverse osmosis filter element 120 are relatively stable, so that the pure water in the first cavity 301 can be ensured to flow out completely or substantially completely by setting a reasonable preset water inlet total threshold value. At this time, the pure water continuously prepared by the reverse osmosis filter element 120 can flow out to the water outlet end of the water purification system through the first water outlet 201. By setting the flow meter 530 and the controller to compare the total water inflow amount of the second cavity 302 with the preset total water inflow amount threshold, the water inlet 203 can be controlled to be communicated with the first water outlet 201 in time, and the user can be ensured to take water uninterruptedly. Moreover, the TDS of the water taken by the user is always low, and the health of the user is guaranteed.

Fig. 4 shows a schematic water path diagram of a water purification system according to a fourth embodiment of the present invention. Fig. 4 is basically the same as the principle of fig. 1, except that the water purification system shown in fig. 4 uses a water quality detector 540 to replace the first pressure sensor 510, so for brevity, only the differences between fig. 4 and fig. 1 will be described in detail herein, and for the same components, the description of the corresponding parts in the text may be referred to, and the details will not be repeated herein for brevity.

The water purification system may further include a water quality detector 540. The water quality detector 540 may employ various types of water quality detectors known in the art or that may appear in the future. The water quality detector 540 may be communicated to the pure water outlet of the reverse osmosis filter element 120. The water quality detector 540 may be used to detect the quality of the pure water flowing from the pure water outlet and generate a water quality signal. The controller may be electrically connected to the water quality detector 540. The controller may be configured to control the water inlet 203 to communicate with the first water outlet 201 when the quality of the pure water is determined to be acceptable based on the water quality signal. Illustratively, the water quality detector 540 may include a TDS probe that determines whether the pure water quality is acceptable by detecting whether the TDS of the pure water is within an acceptable range. The quality of the pure water is determined to be qualified by arranging the water quality detector 540 and the controller, and the water inlet 203 and the first water outlet 201 can be controlled to be communicated in time, so that the user can be ensured to take water uninterruptedly. Moreover, the TDS of the water taken by the user is always low, and the health of the user is guaranteed.

Alternatively, in the embodiment shown in fig. 4, when the water quality detector 540 is provided, it may be determined whether the water inlet 203 communicates with the first water outlet 201 or the second water outlet 202 based on a water quality signal of the water quality detector 540 at the time of power-on. Specifically, the controller may be configured to control the water inlet 203 to communicate with the second water outlet 202 when it is determined that the quality of the pure water is not satisfactory based on the water quality signal. The controller is also used for controlling the water inlet 203 to be communicated with the first water outlet 201 when the quality of the pure water is qualified. Under normal conditions, when the water purification system restarts after standing by for a long time, the TDS of the first section of pure water is higher. However, in unexpected situations, such as the reverse osmosis filter element 120 reaching a useful life, the pure water produced by the reverse osmosis filter element 120 may be of unacceptable quality. By adopting the water quality detector 540, the water quality of the pure water prepared by the reverse osmosis filter element 120 can be detected, and only qualified pure water can be directly conveyed to the water outlet end of the water purification system through the first water outlet 201. Therefore, the user can be ensured to obtain the water which is always the water with TDS meeting the standard, and the health of the user is ensured.

One or more of the features mentioned above may be combined in any combination, unless specifically stated otherwise, or clearly contradicted by context. For example, the flow meter 530 referred to in fig. 3 may be incorporated into any of the water purification systems described in fig. 1-2.

Preferably, as shown in fig. 1, the water purification system may further include a drain line 600. The second volume 302 may also be connected to a water inlet of a drain line 600. A drain solenoid valve 610 may be provided on the drain line 600. The drain solenoid valve 610 may employ various types of solenoid valves known in the art or that may occur in the future. The water outlet of the drain line 600 may be connected to any suitable location, for example, it may be directly discharged to the outside of the water purification system. Through setting up drainage solenoid valve 610, can be after the pure water in first appearance chamber 301 is whole or almost all flows out, with the water discharge in second appearance chamber 302 to when using next time, the pure water of reverse osmosis filter core 120 preparation and the partial dense water that produces in the system water process can also flow into second appearance chamber 302, and water purification system still can improve water flow.

As shown in fig. 1, a water outlet of the drain line 600 may be communicated to a water inlet of the booster pump 110. Under the action of the flow restrictor 410, most of the water flowing into the second cavity 302 is pure water prepared by the reverse osmosis filter element 120, so that the water in the second cavity 302 can be filtered and reused. Through communicating the water outlet of the water discharge pipeline 600 to the water inlet of the booster pump 110, the booster pump 110 can convey the water in the second cavity 302 to the reverse osmosis filter element 120, so that the water is filtered again, and the utilization rate of the water is high.

As shown in fig. 5, the water outlet of the drain line 600 may also be communicated to a concentrate line 800. Therefore, the water in the second cavity 302 and the concentrated water generated in the process of producing water by the reverse osmosis filter element 120 can be discharged together in a centralized manner, so that centralized treatment is facilitated.

In case that the water purification system includes the controller and the high pressure switch 511, the controller may be electrically connected to the drain solenoid valve 610 and the high pressure switch 511, respectively. The controller is used for controlling the drainage electromagnetic valve 610 to be conducted when the high-voltage switch 511 is turned from closed to open for the first time. The controller is used for controlling the drainage electromagnetic valve 610 to be opened when the high-voltage switch 511 is changed from closed to opened for the second time. The closing means that the water pressure in the pipeline where the high-pressure switch 511 is located is lower than the set water pressure, and the high-pressure switch 511 sends a closing electric signal. The disconnection means that the water pressure in the pipeline where the high-voltage switch 511 is located is equal to or higher than the set water pressure, and the high-voltage switch 511 sends a disconnection electric signal. Alternatively, the closing may also mean that the water pressure in the pipeline where the high-pressure switch 511 is located is equal to or lower than a set water pressure, and the high-pressure switch 511 sends a closing electric signal. The disconnection means that the water pressure in the pipeline where the high-voltage switch 511 is located is higher than the set water pressure, and the high-voltage switch 511 sends a disconnection electric signal.

The controller may also be electrically connected to the booster pump 110. The controller is used to control the operation of the booster pump 110 when the high voltage switch 511 is first changed from open to closed. The controller is used for controlling the booster pump 110 to stop working when the high-voltage switch 511 is changed from closed to open for the second time.

The work flow of the water purification system will be described below with reference to the water purification system shown in fig. 1.

When the water purification system is in standby, the water outlet end of the water purification system is closed, the controller controls the water inlet 203 to be communicated with the second water outlet 202, the water pressure in the pipeline where the high-pressure switch 511 is located is equal to or higher than the set water pressure, and the high-pressure switch 511 is disconnected. When a user takes water, the water outlet end of the water purification system is opened, the water pressure in the pipeline where the high-pressure switch 511 is located is lower than the set water pressure, and the high-pressure switch 511 is switched from off to on for the first time. At this point booster pump 110 begins to operate. Meanwhile, the high-voltage switch 511 sends a power-on electric signal, and the controller controls the water inlet 203 to be communicated with the second water outlet 202 when receiving the power-on electric signal. Pure water prepared by the reverse osmosis filter element 120 and part of concentrated water generated in the water preparation process enter the second cavity 302, and the pure water in the first cavity 301 is extruded out and flows out to the water outlet end of the water purification system.

At this time, two situations may occur, taking an embodiment in which the water purification system includes a timer and controls when the waterway switching device 200 is switched to the water inlet 203 to communicate with the first water outlet 201 by a preset time threshold as an example:

firstly, the water continues to be taken after the startup time reaches the preset time threshold, the controller controls the water inlet 203 to be communicated with the first water outlet 201, and at this time, the pure water prepared by the reverse osmosis filter element 120 flows out of the water outlet end of the water purification system through the first water outlet 201. When water taking is stopped, the water outlet end of the water purification system is closed, the water pressure in the pipeline where the high-pressure switch 511 is located is equal to or higher than the set water pressure, and the high-pressure switch 511 is switched from on to off for the first time;

secondly, when the starting-up time is shorter than the preset time threshold, that is, the controller does not wait for the water inlet 203 to communicate with the first water outlet 201, the user stops getting water, and at this time, all the water obtained by the user comes from the first cavity 301. When a user stops taking water, pure water prepared by the reverse osmosis filter element 120 and part of concentrated water generated in the water making process continue to enter the second cavity 302, the pure water in the first cavity 301 continues to be extruded out and flows towards the water outlet end of the water purifying system, so that the water pressure in a pipeline where the high-pressure switch 511 is located is increased, and when the water pressure is equal to or higher than the set water pressure, the high-pressure switch 511 is switched from being closed to being opened for the first time.

Therefore, no matter how long the power-on time is, when the water intake is stopped, the high-voltage switch 511 will be turned from on to off for the first time. At this time, the controller controls the drain solenoid valve 610 to be turned on. Water in second receiving chamber 302 flows out through drain line 600. Meanwhile, the controller controls the water inlet 203 to communicate with the first water outlet 201. Specifically, in the first case, the controller controls the water inlet 203 to continue to communicate with the first water outlet 201; in the second case, the controller controls the water inlet 203 to switch from communicating with the second water outlet 202 to communicating with the first water outlet 201.

When the user stops taking water, the booster pump 110 continues to work, and the pure water prepared by the reverse osmosis filter element 120 can flow into the first cavity 301 through the first water outlet 201 so as to be reserved for the next water taking. Water in second volume 302 flows out under the squeezing pressure of first volume 301. And because the water in second cavity 302 is discharged outwards, the pressure of the pipeline where high-voltage switch 511 is located is relieved, and high-voltage switch 511 is switched from open to closed for the second time. When the first containing chamber 301 is filled with pure water, the water pressure in the pipe where the high-pressure switch 511 is located rises, and when the water pressure is equal to or higher than the set water pressure, the high-pressure switch 511 is turned from on to off for the second time. At this time, the controller controls the booster pump 110 to stop operating and controls the drain solenoid valve 610 to be turned off. Thus, one working process of the water purification system is finished, and the water purification system is in a standby state. In the standby state, the water inlet 203 may be in communication with the second water outlet 202 or the first water outlet 201 depending on whether the fifth check valve 950 is present, as shown in fig. 1. When the fifth check valve 950 is present, the water inlet 203 may be controlled to communicate with the first water outlet 201 at the standby time. When the fifth check valve 950 is not present, the water inlet 203 may be controlled to communicate with the second water outlet 202 at the time of standby.

The above-mentioned work flow is only described by way of example of the water purification system including the timer, and it is understood that the work flow can also be implemented by one or more of the above-described embodiments of the water purification system including the first pressure sensor 510, the second pressure sensor 520, the flow meter 530, or the water quality detector 540.

Preferably, as shown in fig. 1, the water purification system may further include a first check valve 910. The first check valve 910 may employ various types of check valves known in the art or that may occur in the future. A first check valve 910 may be provided on the drain line 600. The first check valve 910 is opened in a water flow direction from the inlet to the outlet of the drain line 600. Thus, first check valve 910 only allows water to flow out of the outlet of drain line 600, but does not allow water to flow into second receptacle 302 through the outlet of drain line 600. In the embodiment shown in the figures, the water inlet of the first one-way valve 910 is connected to the water outlet of the drain solenoid valve 610, that is, the water inlet of the first one-way valve 910 is indirectly connected to the second receptacle 302 through the drain solenoid valve 610. In an embodiment not shown, the water outlet of the first check valve 910 may be connected to the water inlet of the drain solenoid valve 610. At this time, the water inlet of the first check valve 910 is directly communicated to the second volume 302. When the drain solenoid valve 610 is turned on, the first check valve 910 may prevent water from flowing into the second cavity 302 through the drain line 600, water in the second cavity 302 may be drained as completely as possible, and pure water may be stored in the first cavity 301 as much as possible.

Alternatively, as shown in fig. 7, a resistance valve 960 may be provided on the drain line 600. The resistance valve 960 may employ various types of resistance valves known in the art or that may occur in the future. The water outlet of the drain line 600 may be communicated to the water inlet of the booster pump 110 or to the concentrated water line 800. When part of the concentrated water generated in the process of producing water by the reverse osmosis filter element 120 enters the second cavity 302 together with pure water to squeeze the water in the first cavity 301, after all or substantially all of the pure water in the first cavity 301 flows out, the pure water produced by the reverse osmosis filter element 120 is still conveyed into the second cavity 302, which may cause the water pressure in the second cavity 302 to rise. When the water pressure in the second cavity 302 rises to a certain value, water can flush the resistance valve 960 and is discharged out of the second cavity 302, thereby preventing the water pressure from being too high and damaging the structure of the water purification system. When pure water is stored in first chamber 301, water in second chamber 302 may also be discharged out of second chamber 302 through resistance valve 960, ensuring that as much pure water as possible is stored in first chamber 301.

Preferably, as shown in fig. 1, the outlet of the restricted flow line 400 is connected to the line between the second outlet 202 and the second cavity 302. The water purification system may further include a second one-way valve 920. The second check valve 920 may employ various types of check valves known in the art or that may occur in the future. A second check valve 920 may be provided on the line between the second volume 302 and the connection point of the restricted flow line 400 to the line. Second one-way valve 920 is open in the direction of water flow from this connection to second volume 302. In this way, the second check valve 920 only allows water to flow into the second cavity 302, but does not allow water in the second cavity 302 to flow back to the concentrate line 800 through the limiting line 400. When the water in the second cavity 302 is recycled, the second one-way valve 920 can prevent the water from flowing out of the water purification system through the concentrated water pipeline 800 after the water cannot pass through the flow limiting pipeline 400, thereby preventing the waste of the water.

Preferably, as shown in fig. 1, the water purification system may further include a third check valve 930. The third check valve 930 may employ various types of check valves known in the art or that may occur in the future. A third check valve 930 may be provided on the restricted flow line 400. Third check valve 930 is open in the direction of flow from concentrate line 800 to second volume 302. Thus, the third check valve 930 may only allow water to flow into the second cavity 302, but not allow water in the second cavity 302 to flow out of the water purification system through the concentrate pipe 800 after passing through the limiting pipe 400. In the embodiment shown in the figures, the outlet of the third one-way valve 930 is connected to the inlet of the flow restrictor 410. In an embodiment not shown, the inlet of the third one-way valve 930 may be connected to the outlet of the flow restrictor 410. When the water in the second cavity 302 is recycled, the third check valve 930 may prevent the water from flowing out of the water purification system through the concentrated water pipeline 800 after the water cannot pass through the flow limiting pipeline 400, thereby preventing the waste of the water.

In addition, in the case that the reverse osmosis filter element 120 continues to deliver the newly prepared water to the water outlet end after the water inlet 203 is switched from communicating with the second water outlet 202 to communicating with the first water outlet 201, the second check valve 920 and the third check valve 930 can also prevent the water in the second cavity 302 from being discharged reversely through the flow limiting pipeline 400 and the concentrated water pipeline 800. If the second volume 302 is drained, the water pressure in the second volume 302 will decrease, and thus some or all of the water freshly prepared by the reverse osmosis filter element 120 will flow into the first volume 301, resulting in a reduced or even no water flow at the outlet end. For this purpose, the second check valve 920 and the third check valve 930 may be provided alternatively or both.

Preferably, as shown in fig. 1, in case that the outlet of the restricted flow line 400 is communicated with the line between the second outlet 202 and the second cavity 302, the water purification system may further include a fourth check valve 940. The fourth check valve 940 may employ various types of check valves known in the art or that may occur in the future. A fourth check valve 940 may be provided on the line between the second outlet port 202 and the connection point of the restricted line 400 to the line. The fourth check valve 940 is turned on in the direction of the water flow from the second water outlet 202 to the connection point. Thus, the fourth check valve 940 only allows water to flow from the second water outlet 202 into the second cavity 302, but does not allow the concentrated water in the restricted flow line 400 to flow into the second water outlet 202. At the moment that the water inlet 203 is communicated with the second water outlet 202 and is switched to be communicated with the first water outlet 201, the fourth check valve 940 can prevent the concentrated water passing through the flow limiting pipeline 400 from flowing out to the water outlet end of the water purification system through the first water outlet 201, so that the TDS of the pure water prepared by the water purification system is increased, and the health of a user is endangered.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front", "rear", "upper", "lower", "left", "right", "horizontal", "vertical", "horizontal" and "top", "bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words 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 interpreted as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe the spatial relationship of one or more components or features shown in the figures to other components or features. It is to be understood that the spatially relative terms are intended to encompass not only the orientation of the component as depicted in the figures, but also different orientations of the component 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 drawings described above 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 sequences other than those illustrated or described herein.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to 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 more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A water purification system comprises a booster pump (110), a reverse osmosis filter element (120) and a concentrated water pipeline (800), wherein a water outlet of the booster pump is communicated to a raw water port of the reverse osmosis filter element, and the concentrated water pipeline is communicated to a concentrated water outlet of the reverse osmosis filter element, and the water purification system is characterized by further comprising a water path switching device (200, 200 '), a water storage device (300, 300') and a flow limiting pipeline (400), wherein the water path switching device, the water storage device and the flow limiting pipeline are connected in series, and the flow limiting pipeline is connected

The waterway switching device is provided with a water inlet (203), a first water outlet (201) and a second water outlet (202), the waterway switching device controls the water inlet to be communicated with the first water outlet or the second water outlet, and a pure water outlet of the reverse osmosis filter element is communicated to the water inlet;

a water blocking piece (320, 320') is arranged in the water storage device, the water blocking piece is separated into a first cavity (301) and a second cavity (302) which are not communicated with each other in the water storage device, the water blocking piece can move and/or deform in the water storage device, so that the volumes of the first cavity and the second cavity are inversely related, the first water outlet is communicated with the first cavity and the water outlet end of the water purification system, and the second water outlet is communicated with the second cavity;

the water inlet of the flow limiting pipeline is communicated with the concentrated water pipeline, the water outlet of the flow limiting pipeline is communicated with the second containing cavity, and the flow limiter (410) is arranged on the flow limiting pipeline.

2. The water purification system of claim 1, further comprising a controller electrically connected to the waterway switching device (200, 200'), wherein

The controller is used for controlling the water inlet (203) to be communicated with the second water outlet (202) when a starting electric signal is received each time; or

The water purification system further comprises a first timer, the controller is electrically connected to the first timer, the first timer is used for accumulating the standby time, and the controller is used for controlling the water inlet to be communicated with the second water outlet when receiving a starting electric signal after the standby time exceeds a preset standby time threshold value.

3. The water purification system of claim 2, further comprising a second timer, wherein the controller is electrically connected to the second timer, wherein the second timer is configured to accumulate a startup time period, and wherein the controller is configured to control the water inlet (203) to communicate with the first water outlet (201) when the startup time period is greater than or equal to a preset time period threshold value.

4. The water purification system of claim 2, further comprising a first pressure sensor (510), wherein the controller is electrically connected to the first pressure sensor, wherein the first pressure sensor is disposed between the first water outlet (201) and the water outlet end, wherein the first pressure sensor is configured to detect a first water pressure, and wherein the controller is configured to control the water inlet to communicate with the first water outlet when the first water pressure is less than or equal to a first preset water pressure threshold; or/and

the water purification system further comprises a second pressure sensor (520), the controller is electrically connected to the second pressure sensor, the second pressure sensor is arranged between the second water outlet (202) and the second cavity (302), the second pressure sensor is used for detecting a second water pressure, and the controller is used for controlling the water inlet to be communicated with the first water outlet when the second water pressure is larger than or equal to a second preset water pressure threshold value.

5. The water purification system of claim 2, further comprising a flow meter (530), wherein the controller is electrically connected to the flow meter, wherein the flow meter is arranged between the second water outlet (202) and the second volume (302), or between the concentrated water outlet and the second volume, or between the pure water outlet and the water inlet (203), wherein the flow meter is configured to detect a total amount of inlet water, and wherein the controller is configured to control the water inlet to communicate with the first water outlet when the total amount of inlet water is greater than or equal to a preset total amount of inlet water threshold.

6. The water purification system of claim 2, further comprising a water quality detector (540) connected to the pure water outlet of the reverse osmosis filter element (120) for detecting the quality of pure water flowing out of the pure water outlet and generating a water quality signal, the controller being electrically connected to the water quality detector and for controlling the water inlet (203) to communicate with the first water outlet (201) when the quality of pure water is determined to be acceptable based on the water quality signal.

7. The water purification system of claim 1, further comprising a water quality detector (540) connected to the pure water outlet of the reverse osmosis filter cartridge (120) for detecting the quality of pure water flowing out of the pure water outlet and generating a water quality signal, and a controller electrically connected to the water path switching device (200, 200') and the water quality detector, the controller being configured to control the water inlet (203) to communicate with the second water outlet (202) when the quality of pure water is determined to be not satisfactory based on the water quality signal, and the controller being further configured to control the water inlet to communicate with the first water outlet (201) when the quality of pure water is determined to be satisfactory based on the water quality signal.

8. The water purification system of claim 1, further comprising a water discharge line (600), wherein the second chamber (302) is further connected to a water inlet of the water discharge line, the water discharge line is provided with a water discharge solenoid valve (610), and a water outlet of the water discharge line is connected to a water inlet of the booster pump (110) or to the concentrated water line (800).

9. The water purification system of claim 8, further comprising a controller and a high-pressure switch (511), wherein the high-pressure switch is connected between the first water outlet (201) and the water outlet of the water purification system, the controller is electrically connected to the waterway switching device (200, 200 '), the drain solenoid valve (610) and the high-pressure switch, respectively, wherein the controller is electrically connected to the waterway switching device (200, 200'), the drain solenoid valve (610) and the high-pressure switch, respectively

The controller is used for controlling the drainage electromagnetic valve to be conducted when the high-voltage switch is switched from on to off for the first time, and controlling the water inlet (203) to be communicated to the first water outlet; and is

The controller is used for controlling the drainage electromagnetic valve to be opened when the high-voltage switch is changed from being closed to being opened for the second time.

10. The water purification system of claim 9, wherein the controller is electrically connected to the booster pump (110), the controller being configured to control the booster pump to operate when the high-voltage switch (511) is first turned from off to on and to stop operating when the high-voltage switch is second turned from on to off.

11. The water purification system of claim 8, further comprising a first one-way valve (910) disposed on the drain line (600), the first one-way valve being open in a direction of water flow from the inlet to the outlet of the drain line.

12. The water purification system of claim 1, further comprising a water drain line (600), the second volume (302) being further connected to a water inlet of the water drain line, the water drain line being provided with a resistance valve (960), and a water outlet of the water drain line being connected to a water inlet of the booster pump (110) or to the concentrate line (800).

13. The water purification system of claim 1, wherein an outlet of the flow restriction line (400) communicates with a line between the second outlet (202) and the second volume (302), the water purification system further comprising a second one-way valve (920) disposed in the line between the second volume and a connection point of the flow restriction line to the line, the second one-way valve communicating in a direction of water flow from the connection point to the second volume.

14. The water purification system of claim 1, further comprising a third one-way valve (930) arranged on the restricted flow line (400), the third one-way valve being open in the direction of flow of water from the concentrate line (800) to the second volume (302).

15. The water purification system of claim 1, wherein the flow restriction line (400) communicates to a line between the second outlet (202) and the second volume (302), the water purification system further comprising a fourth one-way valve (940) disposed in the line between the second outlet and a connection point of the flow restriction line to the line, the fourth one-way valve being open in a direction of water flow from the second outlet to the connection point.

16. A water purification machine comprising a water purification system as claimed in any one of claims 1 to 15.