CN212687587U

CN212687587U - Water purifier

Info

Publication number: CN212687587U
Application number: CN202020878678.0U
Authority: CN
Inventors: 王洪坤; 张辉; 朱萍萍
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2021-03-12
Anticipated expiration: 2030-05-22

Abstract

The utility model provides a water purifier, which comprises a main water pipeline communicated to a water outlet, wherein a reverse osmosis filter element is arranged on the main water pipeline; the water purifier also comprises a water storage device, and the water storage device comprises a first water storage cavity and a second water storage cavity; the water purifier also comprises a pure water waterway switching device, wherein a pure water inlet is communicated to a pure water port of the reverse osmosis filter element, a first pure water outlet is communicated to a first water inlet and outlet, and a second pure water outlet is communicated to a second water inlet and outlet; the water purifier also comprises a concentrated water utilization waterway, wherein the first end of the concentrated water utilization waterway is communicated with the concentrated water port of the reverse osmosis filter element, and the second end of the concentrated water utilization waterway is communicated with the second water inlet and outlet. Through this purifier, the user can avoid connecing and get the higher first section water of TDS, but connects the pure water of getting in the first water storage intracavity at first, has guaranteed that user's drinking water is healthy from this, and the water intaking time is short.

Description

Water purifier

Technical Field

The utility model relates to a technical field of aqueous cleaning specifically, relates to a purifier.

Background

With the pursuit of the public on the quality of life, the water purifier gradually enters the families of people. Reverse osmosis water purifiers are becoming more popular because the purified water produced by them is fresher, more sanitary and safer.

The former aquatic has higher TDS (soluble solid total amount) more, and reverse osmosis water purification machine can block a large amount of ions in the former aquatic before the osmotic membrane of reverse osmosis filter core under the effect of high-pressure pump, and makes the TDS of the water through the osmotic membrane accord with the standard of straight drinking water. Meanwhile, the reverse osmosis filter element can discharge high-TDS concentrated water according to a certain proportion when the direct drinking water is prepared. In the process of completing water production by the water purifier, although concentrated water can be discharged through the concentrated water pipeline, a small amount of concentrated water still exists in the reverse osmosis filter element before the reverse osmosis membrane after water production is completed. After long-time shutdown, according to the principle that ions are diffused from high-concentration solution to low-concentration solution, the ions in the concentrated water in front of the membrane can be diffused into the directly drinking water purified behind the membrane, so that the purified directly drinking water is polluted. When the next water is taken, the polluted direct drinking water can be mixed with new direct drinking water to flow out, and the TDS of the first section of water taken by the user is higher than the standard value.

In order to avoid the high TDS of the first section of water received by the user, a water storage device, such as a water drive device, is usually provided at the pure water port of the reverse osmosis filter element. The pure water stored in the water storage device in advance is extruded out by utilizing the concentrated water discharged from the reverse osmosis filter element, so that the TDS value of the first section of water is reduced.

Through the prior art, although the TDS value of the first section of water is reduced, the user is prevented from receiving the first section of water with poor water quality; however, the discharge capacity of the concentrated water in unit time of the reverse osmosis filter element is small, namely the concentrated water is drained slowly, the water storage device is extruded by the reverse osmosis filter element, and the amount of the extruded pure water is small, so that the flow rate of the first section of water received by a user is very slow, and the water using experience of the user is seriously influenced.

SUMMERY OF THE UTILITY MODEL

In order to at least partially solve the problems in the prior art, the utility model provides a water purifier, which comprises a main water pipeline communicated to a water outlet of the water purifier, wherein a reverse osmosis filter element is arranged on the main water pipeline; the water purifier also comprises a water storage device, wherein the water storage device comprises a first water storage cavity and a second water storage cavity, the first water storage cavity is provided with a first water inlet and a first water outlet communicated to the water outlet, the second water storage cavity is provided with a second water inlet and a second water outlet, and the volumes of the first water storage cavity and the second water storage cavity can be changed according to the water pressure in the cavities; the water purifier also comprises a pure water waterway switching device, wherein the pure water waterway switching device is provided with a pure water inlet, a first pure water outlet and a second pure water outlet, the pure water inlet is communicated with the pure water port of the reverse osmosis filter element, the first pure water outlet is communicated with the first water inlet and outlet, and the second pure water outlet is communicated with the second water inlet and outlet; the water purifier also comprises a concentrated water utilization water path, wherein a first end of the concentrated water utilization water path is communicated with a concentrated water inlet of the reverse osmosis filter element, and a second end of the concentrated water utilization water path is communicated with a second water inlet and outlet.

The water purifier with the structure has the advantages that the first section of water with higher TDS and the concentrated water discharged from the concentrated water inlet of the reverse osmosis filter element can enter the second water storage cavity of the water storage device through the second water inlet and outlet to extrude the first water storage cavity, so that a user can firstly receive the pure water in the first water storage cavity, and the drinking water health of the user is ensured. The water in the first water storage cavity is rapidly discharged through the two paths of water flows, the water outlet speed of the water outlet can be consistent with the water flow speed flowing into the water purifier from the water inlet, the water taking time of a user is shortened, and the use experience of the user is improved.

Exemplarily, the water purifier further comprises a main control device electrically connected with the pure water waterway switching device.

Therefore, the setting mode is simple and effective, can select various types of equipment, can control through various parameters such as time, flow, pressure and the like, and expands the application range.

Illustratively, a first high-voltage switch is arranged on the main water pipeline downstream of the reverse osmosis filter element and electrically connected with the main control device.

The high-voltage switch can send corresponding signal of telecommunication according to the water pressure change of place pipeline, and each executive device of purifier can be controlled accurately by help master control unit promptly to a device from this, is guaranteeing that the purifier still reduces the purifier cost under the prerequisite that provides the pure water for the user smoothly.

Exemplarily, the water purifier further comprises a water quality detector, the water quality detector is used for detecting the total dissolved solids of the pure water prepared by the reverse osmosis filter element, and the water quality detector is electrically connected with the main control device.

Therefore, the action of the pure water waterway switching device is controlled by using the detection result of the water quality detector, so that the water taken by the user can be directly ensured to be direct drinking water which conforms to the standard vertebra. The problem that the water quality meets the standard and the user can not directly take the water is avoided; and the influence on the use experience of the user caused by the fact that the water quality does not meet the standard and is accessed by the user is avoided.

Illustratively, the water quality detector is arranged between the second pure water outlet and the second water inlet and outlet or between the pure water inlet of the reverse osmosis filter element and the pure water inlet of the pure water waterway switching device.

Therefore, the user can be prevented from receiving the first section of water which does not accord with the direct drinking water standard. And the position of placing the water quality detector has multiple choices, and the flexibility is high.

Exemplarily, the water purifier further comprises a pressure sensor for detecting the water pressure between the second pure water outlet of the pure water waterway switching device and the water storage device, and the pressure sensor is electrically connected with the main control device.

The conduction mode of the two water channel switching devices is controlled by detecting the water pressure between the second pure water outlet and the second water inlet and outlet of the pure water channel switching device by using the pressure sensor, so that the control logic of the main control device is simple, the calculated amount is small, and the performance requirement on the main control device is low.

Illustratively, the pressure sensor comprises a second high-pressure switch, the second high-pressure switch is arranged between a second pure water outlet of the pure water waterway switching device and the water storage device, and the second high-pressure switch is switched off when the water pressure is greater than or equal to a preset pressure threshold value.

Therefore, the high-voltage switch is arranged between the second pure water outlet and the water storage device, so that the structure is simple. The high-voltage switch is low in cost and only outputs high and low levels corresponding to on and off, so that the high-voltage switch is small in data transmission amount, the master control device is easy to identify, and the calculation amount is small.

Illustratively, the purifier still includes the flowmeter for detect the pure water total amount that reverse osmosis filter core made, and the flowmeter electricity is connected master control unit.

Therefore, the flow meter directly accumulates the flowing water amount, the pure water total amount threshold can be set according to the water quality conditions of different regions, and the total amount of the first-stage water entering the second water storage cavity is controlled. Therefore, the integral control of the water purifier is facilitated, and the water consumption quality of a user is ensured.

Illustratively, the flow meter is disposed at the second pure water outlet of the pure water waterway switching device or between the pure water port of the reverse osmosis filter element and the pure water inlet of the pure water waterway switching device.

Therefore, the application range of the flow meter is expanded, and a hardware basis can be made for the expansion of the functions of the water purifier.

Exemplarily, the water purifier further comprises a water discharge waterway, wherein the first end of the water discharge waterway is arranged between the concentrated water inlet and the second water inlet and outlet of the reverse osmosis filter element, the second end of the water discharge waterway is connected with the water outlet of the water purifier, and the water discharge waterway or the concentrated water utilization waterway is provided with a concentrated water control device.

The water purifier comprises a water drainage waterway, so that concentrated water generated by the reverse osmosis filter element can be smoothly discharged. The concentrated water control device is arranged on the drainage water path or the concentrated water utilization water path, so that the flow direction of the discharged concentrated water can be controlled timely, and the normal operation of the water purifier is ensured.

Illustratively, the concentrate control device is arranged on a concentrate water path, and a first discharge electromagnetic valve is arranged on the discharge water path.

When the water purifier stores the generated concentrated water into the second water storage cavity, the first water discharge electromagnetic valve can be controlled to be in a cut-off state, and the concentrated water is prevented from being directly discharged from the water discharge port. When the purifier is when retaining to first water storage chamber, first drainage solenoid valve can all be in the on-state with dense water controlling means, with second water storage chamber and outlet intercommunication, releases the pressure in the second water storage intracavity, is convenient for to first water storage intracavity retaining.

Illustratively, the second water inlet and outlet includes a second water inlet and a second water outlet; the first end of the drainage waterway is arranged between the concentrated water port of the reverse osmosis filter element and the concentrated water control device; the second end of the concentrated water utilization waterway is communicated with the second water inlet; the water purifier also comprises a second water discharge electromagnetic valve which is arranged at the second water outlet.

When the purifier is when retaining to first water storage chamber, first drainage solenoid valve can all be in the on-state with dense water controlling means, with second water storage chamber and outlet intercommunication, or switch on second drainage solenoid valve, release the pressure in the second water storage intracavity, or all switch on above three valve, be convenient for more quick with the pressure release of second water storage intracavity to and the water of draining off the second water storage intracavity rapidly.

The reverse osmosis filter comprises a reverse osmosis filter element, a main water pipeline, a booster pump, a water return water pipeline and a water outlet pipeline, wherein the booster pump is arranged on the upstream of the reverse osmosis filter element on the main water pipeline, one end of the water return water pipeline is communicated to a second water discharge electromagnetic valve, and the other end of the water return water pipeline is communicated to a water inlet of the booster pump.

Therefore, the water purifier with the water return waterway can guide the water in the second water storage cavity to flow back to the main water pipeline, filter the water, recycle the water and reduce the waste of water resources.

Illustratively, the concentrate control device and the first drain solenoid valve are implemented with a concentrate waterway switching device.

Such waterway structure, the integrated level is high, and the waterway interface is few, can reduce the risk of leaking.

Illustratively, the concentrate control device is realized by an independent electromagnetic valve.

Therefore, the control logic of the water purifier can be simplified, and the risk of errors in use is reduced.

Exemplarily, still include booster pump and return water route, the booster pump sets up the upstream of the reverse osmosis filter core on the main water pipeline, and the first end in return water route sets up in second business turn over water mouthful department, and the second end in return water route is connected to the water inlet of booster pump, is provided with dense water controlling means on the return water route.

The water purifier is only provided with the concentrated water control device on the return water path, so that the water path is simple and the cost is low; and effectively utilizes the concentrated water generated by the reverse osmosis filter element, thereby avoiding water resource waste.

Illustratively, the pure water waterway switching device comprises a first pure water solenoid valve and a second pure water solenoid valve which are connected in parallel, wherein the first pure water solenoid valve is communicated between the pure water port and the first water inlet and outlet port, and the second pure water solenoid valve is communicated between the pure water port and the second water inlet and outlet port.

The waterway structure is simple to realize, and the electromagnetic valve has simple function, so that the product has higher quality, is used for a long time and is not easy to damage.

Illustratively, the pure water waterway switching device comprises a pure water one-inlet two-outlet electromagnetic valve, a water inlet of the pure water one-inlet two-outlet electromagnetic valve is communicated to a pure water port, and two water outlets of the pure water one-inlet two-outlet electromagnetic valve are respectively communicated to a first water inlet and a second water outlet.

Therefore, the pure water waterway switching device can be switched under two waterways only by one part, and the waterway structure can be simplified.

Illustratively, the water storage device includes a body having a fixed volume and a water blocking member disposed in the body to partition a space in the body into a first water storage chamber and a second water storage chamber, at least a portion of the water blocking member being made of a deformable material to change a shape according to an intra-chamber water pressure of the first water storage chamber and the second water storage chamber.

Therefore, at least one part of the water stop piece is flexible and can change the shape, so that the water stop piece can be conveniently installed in the body, the occupied space is small, and the integration level of the water storage device is high.

Illustratively, the second water inlet/outlet includes a pure water inlet and a concentrated water inlet; a second pure water outlet of the pure water waterway switching device is communicated to the pure water inlet; the second end of the concentrated water utilizing waterway is communicated to the concentrated water inlet.

Like this, can simplify the water route setting, reduce the water route interface, reduce the risk of leaking, also make the water route planning more clear, the maintenance of being convenient for.

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. 1A to 1C are schematic water paths of a water purifier according to different exemplary embodiments of the present invention, respectively;

fig. 2 to 7 are schematic water paths of a water purifier according to further different exemplary embodiments of the present invention, respectively;

fig. 8 is a schematic view of a water storage device according to an exemplary embodiment of the present invention.

Wherein the figures include the following reference numerals:

101. a water inlet; 102. a water outlet; 103. a water outlet; 210. a main water line; 211. a reverse osmosis filter element; 211a and a pure water port; 211b, a concentrate outlet; 212. a first high voltage switch; 213. a booster pump; 220. a water return waterway; 221. a second drain solenoid valve; 230. a concentrated water utilization waterway; 240. a drainage waterway; 300. a water storage device; 310. a first water storage cavity; 311. a first water inlet and outlet; 320. a second water storage cavity; 321. a second water inlet and outlet; 321a and a second water inlet; 321b and a second water outlet; 330. a body; 340. a water stop; 400. a pure water waterway switching device; 401. a pure water inlet; 402. a first pure water outlet; 403. a second pure water outlet; 410. a first pure water solenoid valve; 420. a second pure water solenoid valve; 430. a pure water one-inlet two-outlet electromagnetic valve; 500. a concentrated water waterway switching device; 501. a concentrated water inlet; 502. a first concentrated water outlet; 503. a second concentrated water outlet; 510. a first exhaust solenoid valve; 520. a concentrated water control device; 610. a water quality detector; 620. a pressure sensor; 630. a flow meter.

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 at least partially solve the above technical problem caused by squeezing the water storage device with the thick water to discharge the pure water in the prior art, as shown in fig. 1A, a water purifier is provided, which has a water inlet 101 and a water outlet 102. Generally, the water inlet 101 may be connected to a water source such as a municipal water pipe, and the water outlet 102 may be used to be connected to a water outlet device, which may include a faucet, a pipeline machine, and the like. The water purifier is provided with a main water pipeline 210 communicated with the water inlet 101 and the water outlet 102, and the main water pipeline 210 is provided with a reverse osmosis filter element 211. The reverse osmosis cartridge 211 is mainly used to filter water flowing therein.

The water purifier further comprises a water storage device 300. The water storage device 300 includes a first water storage chamber 310 and a second water storage chamber 320. The first reservoir chamber 310 has a first inlet/outlet 311 communicating with the outlet 102, and the second reservoir chamber 320 has a second inlet/outlet 321. The first and second

water storage chambers

310 and 320 may change their volumes according to the water pressure in the chambers. The total volume of the first water storage chamber 310 and the second water storage chamber 320 is fixed, and the volume ratio of the first water storage chamber 310 and the second water storage chamber 320 can be changed according to the water pressure in the first water storage chamber and the second water storage chamber. Specifically, the water storage device 300 having this structure may include a water drive device and the like in the related art.

The water purifier further comprises a pure water waterway switching device 400. Pure water waterway switching device 400 has pure water inlet 401, first pure water outlet 402, and second pure water outlet 403. Pure water waterway switching device 400 can communicate pure water inlet 401 with first pure water outlet 402 or second pure water outlet 403. The pure water inlet 401 is communicated to the pure water port 211a of the reverse osmosis filter cartridge 211. The first pure water outlet 402 is communicated to the first water inlet/outlet 311 of the first water storage chamber 310. The second pure water outlet 403 is communicated to a second water inlet/outlet 321 of the second water storage chamber 320.

The water purifier further comprises a concentrated water utilization water circuit 230. A first end of the concentrated water utilization waterway 230 is communicated with the concentrated water outlet 211b of the reverse osmosis filter element 211, and a second end of the concentrated water utilization waterway 230 is communicated with the second water inlet/outlet 321 of the second water storage cavity 320. Through the concentrated water utilization water path 230, the reverse osmosis filter element 211 filters the raw water, and the remaining concentrated water can enter the second water storage chamber 320 of the water storage device 300. In some examples, the concentrate can also be drained to a drain of a water purifier via concentrate utilization water circuit 230.

As shown in fig. 1A, the second pure water outlet 403 and the second end of the concentrated water utilizing waterway 230 are both communicated to the second water inlet/outlet 321 of the second water storage cavity 320. In this embodiment, the second water inlet/outlet 321 is a water inlet. The second pure water outlet 403 and the second end of the concentrated water utilizing waterway 230 are firstly communicated to form a waterway before being communicated to the second water inlet/outlet 321, and then are communicated with the second water storage cavity 320.

Illustratively, the second water inlet/outlet 321 may include a pure water inlet (not shown) to which the second pure water outlet 403 of the pure water waterway switching device 400 is connected, and a concentrated water inlet (not shown) to which the second end of the concentrated water utilization waterway 230 is connected. That is, the pure water and the dense water that are produced by reverse osmosis filter core 211 communicate to second water storage chamber 320 through two independent mouths of a river respectively, like this, can simplify the water route setting, reduce the water route interface, reduce the risk of leaking, also make the water route planning more clear, the maintenance of being convenient for.

The water purifier with the structure has the advantages that the first section of water with higher TDS and the concentrated water discharged from the concentrated water outlet 211b of the reverse osmosis filter element 211 can enter the second water storage cavity 320 of the water storage device 300 through the second water inlet/outlet 321 to extrude the first water storage cavity 310, so that a user firstly receives the pure water in the first water storage cavity 310, and the drinking water health of the user is ensured. The water in the first water storage cavity 310 is rapidly discharged through the two paths of water flows, the water flow speed of the water outlet 102 can be consistent with the water flow speed flowing into the water purifier from the water inlet 101, the water taking time of a user is shortened, and the use experience of the user is improved.

The water purifier may also be provided with a master control device (not shown), for example. The main control device may be electrically connected to the pure water waterway switching device 400 to control the water purifier. Exemplarily, the main control device can also be connected with devices such as the water outlet control device and the first detection device. The water outlet control device is used for controlling water outlet of the water purifier based on operation of a user. The first detection device is used for detecting parameters of water in the waterway, such as a water quality detector, a pressure sensor or a flowmeter. Accordingly, the operation of the pure water passage switching device 400 can be accurately controlled based on the electric signals from these devices.

For example, as shown in fig. 1A, a concentrate control device 520 may be provided in the concentrate-use water path 230. The rich water control device 520 may be a solenoid valve having on and off states. It can control the concentrated water discharged from the reverse osmosis filter element 211 to enter the second water storage chamber 320 or to be discharged to the drain. The main control device may also be electrically connected to the concentrate control device 520 to control the operation of the concentrate control device 520, thereby controlling the communication state of the concentrate utilization water path 230.

Exemplarily, the main control device can also be connected with devices such as the water outlet control device and the first detection device. The main control device can control the pure water inlet 401 of the pure water waterway switching device 400 to be communicated with the second pure water outlet 403 when receiving an electric signal for starting to take water from the identifier of the water outlet control device or when the water purifier enters a standby state; and controls the concentrate control device 520 so that the concentrate port 211b communicates with the second water inlet/outlet port 321.

Optionally, a first high pressure switch 212 is provided on the main water line 210 downstream of the reverse osmosis cartridge 211 to act as the aforementioned effluent control device. The first high voltage switch 212 is electrically connected to the main control device. The pressure change in the main water pipe 210 can be generated by the water boiling and water closing actions of the water outlet device such as a faucet, and the first high-pressure switch 212 is used for transmitting the pressure change in the main water pipe 210 to the main control device in an electric signal manner, so that the subsequent operation of the water purifier is completed under the control of the main control device. It can be understood that in a user water intake operation, when the user turns on the water outlet device to start taking water, the water pressure of the waterway in which the first high-pressure switch 212 is located is reduced. For this user water getting operation, the first high voltage switch 212 is first turned from open to closed. Thus, the electrical signal indicating that the first high voltage switch 212 received by the main control device for the first time is turned from open to closed can be used as the electrical signal indicating that water intake is started.

Alternatively, the master control device may also be used to connect an electrically controlled faucet. The electric control faucet is used as a water outlet control device. The electrically controlled faucet can be operated directly by a user. When the user opens the electric control faucet, the electric control faucet can send an electric signal indicating that water starts to be taken to the main control device.

The main control means may also control the pure water inlet 401 of the pure water waterway switching means 400 to communicate with the first pure water outlet 402 when a first predetermined period of time T1 elapses after receiving an electric signal indicating that water intake is started from the water outflow control means or in accordance with a detection signal from the first detection means.

The control operation of the main control device will be described in detail below by taking the water outlet control device as the first high-voltage switch 212 as an example. It should be understood that, although the first high-voltage switch is described as an example, the water outlet control device may be other control devices such as an electric control switch, and the application is not limited thereto.

In one example, a user turns on a water outlet device, such as a mechanical faucet, to begin drawing water, and the water pressure of the waterway in which the first high pressure switch 212 is located decreases. For this user water getting operation, the first high voltage switch 212 is first turned from open to closed. In the one-time water taking operation of the user, the main control device controls the pure water inlet 401 of the pure water waterway switching device 400 to be communicated with the second pure water outlet 403 and controls the concentrated water control device 520 to make the concentrated water outlet 211b be communicated with the second water inlet/outlet 321 when receiving the electric signal that the first high-voltage switch 212 is changed from being opened to being closed for the first time. At this time, the pure water and the concentrated water generated from the reverse osmosis filter element 211 enter the second water storage chamber 320, and squeeze the first water storage chamber 310, so that the pure water stored in the first water storage chamber 310 in advance is discharged for the user to take. It will be appreciated that during the time when the user has just begun to take water, the pure water produced by the reverse osmosis cartridge 211 is the first stage of water with the higher TDS. The first water enters the second water storage chamber 320 without being taken by the user.

After a first predetermined period of time T1 has elapsed since receiving the electrical signal indicating the beginning of water intake, the first segment of water in the reverse osmosis cartridge 211 having a higher TDS can be considered to have all flowed into the second water storage chamber 320. At this time, the main control unit controls the pure water inlet 401 of the pure water waterway switching unit 400 to communicate with the first pure water outlet 402, and the pure water generated in real time by the reverse osmosis filter element 211 is directly received by the user.

In another example, a first detection device, such as a water quality detector, a pressure sensor, a flow meter, or the like, may also be provided in the water purifier. The main control device can control the pure water waterway switching device 400 to switch the waterway according to the detection signal sent by the first detection device, namely, the pure water inlet 401 of the pure water waterway switching device 400 is controlled to be communicated with the first pure water outlet 402, so that a user can directly access the pure water generated by the filtration of the reverse osmosis filter element 211. The above embodiments will be described in detail below with respect to specific applications of the first detection device.

The control modes of the pure water waterway switching device 400 and the concentrated water control device 520 are simple and effective, can select various devices, can control various parameters such as time, flow, pressure and the like, and expand the application range.

Fig. 2 is a schematic water path diagram of a water purifier according to another exemplary embodiment of the present invention. The water purifier shown in fig. 2 is basically the same as the water purifier shown in fig. 1A, except that the water purifier shown in fig. 2 may further include a water quality detector 610. The water quality detector 610 is used to detect the total amount of soluble solids of the pure water produced by the reverse osmosis filter 211. In this embodiment, the water quality detector 610 is electrically connected to the main control device to serve as a first detection device for sending a detection signal to the main control device. The detection signal sent by the water quality detector 610 to the master control includes information about the total amount of dissolved solids as described above. The main control device controls the pure water waterway switching device 400 when the total amount of soluble solids is less than or equal to a preset total amount of soluble solids threshold value, so that the pure water inlet 401 of the pure water waterway switching device 400 is communicated with the first pure water outlet 402.

In one embodiment, the water quality detector 610 may detect the water quality of the water after the reverse osmosis filter 211. If it is detected that the TDS of the water therein is higher than a standard value, a state is maintained in which the pure water inlet 401 of the pure water path switching device 400 communicates with the second pure water outlet 403. The above control mode makes the polluted pure water in the reverse osmosis filter element 211 flow into the second water storage cavity 320, and avoids the user from receiving the direct drinking water with the water quality not in accordance with the standard vertebra. If water is produced after a period of time, the water quality of the water behind the reverse osmosis filter element 211 accords with the direct drinking water standard, the main control device controls the pure water inlet 401 of the pure water waterway switching device 400 to be communicated with the first pure water outlet 402, and a user can receive the direct drinking water which accords with the standard.

Therefore, the water quality detector 610 can control the pure water waterway switching device 400 to directly ensure that the water received by the user is direct drinking water conforming to the standard vertebra. The problem that the water quality meets the standard and the user can not directly take the water is avoided; and the influence on the use experience of the user caused by the fact that the water quality does not meet the standard and is accessed by the user is avoided.

For example, the water quality detector 610 may be disposed between the second pure water outlet 403 and the second water inlet/outlet 321, or between the pure water port 211a of the reverse osmosis filter element 211 and the pure water inlet 401 of the pure water waterway switching device 400.

In one embodiment, if the water quality detector 610 is provided between the second pure water outlet 403 and the second water inlet/outlet 321, the pure water inlet 401 of the pure water waterway switching device 400 communicates with the second pure water outlet 403 at the start of water intake. Once the water quality is detected to be qualified, the pure water waterway switching device 400 communicates the pure water inlet 401 with the first pure water outlet 402.

In another embodiment, if the water quality detector 610 is disposed between the pure water port 211a of the reverse osmosis filter element 211 and the pure water inlet 401 of the pure water waterway switching device 400 (as shown in fig. 2), the pure water inlet 401 and the first pure water outlet 402 in the pure water waterway switching device 400 may be blocked at the start of water intake. If the water quality is acceptable, pure water inlet 401 is kept in communication with second pure water outlet 403 or switched to pure water inlet 401 in communication with second pure water outlet 403. If the water quality is not acceptable, pure water inlet 401 is maintained in communication with second pure water outlet 403. The user can be prevented from receiving the first section of water which does not accord with the direct drinking water standard. And the position of placing water quality detector 610 has multiple choices, and the flexibility is high.

Fig. 3 is a schematic water path diagram of a water purifier according to another exemplary embodiment of the present invention. The water purifier shown in fig. 3 is substantially the same as the water purifier shown in fig. 1A, except that the water purifier shown in fig. 3 further comprises a pressure sensor 620, and the pressure sensor 620 is used for detecting the water pressure between the second pure water outlet 403 of the pure water waterway switching device 400 and the water storage device 300. In this embodiment, the pressure sensor 620 is electrically connected to the main control device to serve as a first detection device for sending a detection signal to the main control device. The detection signal includes information about the aforementioned water pressure. The main control device controls the pure water waterway switching device 400 when the water pressure is greater than or equal to the preset pressure threshold value, so that the pure water inlet 401 of the pure water waterway switching device 400 is communicated with the first pure water outlet 402.

In one embodiment, the preset pressure threshold is P. At the start of water intake, pure water inlet 401 of pure water waterway switching device 400 communicates with second pure water outlet 403. When a user takes water, water flows first into the second water storage chamber 320. After a period of time, when the second water storage chamber 320 is full, the water pressure between the second pure water outlet 403 and the water storage device 300 will increase, and when the water pressure reaches the preset pressure threshold P of the pressure sensor 620, the first pure water outlet 402 of the pure water waterway switching device 400 is communicated with the pure water inlet 401. At this time, the user defaults that the time when the second water storage chamber 320 is full is the time when the first water is discharged.

Because the quality of water in different districts is inequality, reverse osmosis filter core 211's capacity is different and other external factors, when leading to different purifier, perhaps same purifier to use in different districts, the volume of first section water can have the difference, in order to avoid the user to receive and get the straight drink water that does not conform to the standard, can be according to actual conditions, select to have different volumetric second water storage chamber 320. When the water amount of the unqualified first section is large, the second water storage cavity 320 with large capacity can be selected; when the amount of the unqualified first stage water is less, the second water storage chamber 320 with a smaller capacity can be selected. While the preset pressure threshold P of the pressure sensor 620 may be unchanged. By using the pressure sensor 620 to detect the water pressure between the second pure water outlet 403 and the second water inlet/outlet 321 of the pure water waterway switching device 400 to control the conduction mode of the two waterway switching devices, the control logic of the main control device is simple, the calculation amount is small, and the performance requirement on the main control device is low.

Further, the pressure sensor 620 includes a second high-pressure switch. The second high-pressure switch is provided between the second pure water outlet 403 of the pure water waterway switching device 400 and the water storage device 300. And when the water pressure is greater than or equal to the preset pressure threshold value, the second high-voltage switch is switched off.

The high-pressure switch is a pressure switch which changes the working state according to the magnitude of the pressure value in the pipeline. The high-voltage switch has two working states of opening and closing. When the pressure in the pipeline is lower than a preset pressure threshold value P, the second high-voltage switch is closed, and a closing electric signal is sent to the main control device. When the pressure in the pipeline where the second high-voltage switch is located is larger than or equal to a preset pressure threshold value P, the second high-voltage switch is disconnected, and a disconnection electric signal is sent to the main control device. When the second high voltage switch is turned off, it indicates that the water in the second water storage chamber 320 is full at this time. And the user defaults to the moment that the water in the second water storage chamber 320 is full, which is the moment that the first water is discharged.

Accordingly, the high-pressure switch is provided between second pure water outlet 403 and water storage device 300, and the structure is simplified. The high-voltage switch is low in cost and only outputs high and low levels corresponding to on and off, so that the high-voltage switch is small in data transmission amount, the master control device is easy to identify, and the calculation amount is small.

Fig. 4 is a schematic water path diagram of a water purifier according to another exemplary embodiment of the present invention. The water purifier shown in fig. 4 is substantially the same as the water purifier shown in fig. 1A, except that the water purifier shown in fig. 4 may include a flow meter 630 for detecting the total amount of pure water produced by the reverse osmosis filter 211. In this embodiment, the flow meter 630 is electrically connected to the master control device to serve as a first detection device to send a detection signal to the master control device. The detection signal includes information on the amount of pure water described above. The main control unit controls the pure water waterway switching unit 400 when the total pure water amount is greater than or equal to a preset threshold value of the total pure water amount, so that the pure water inlet 401 of the pure water waterway switching unit 400 is communicated with the first pure water outlet 402.

The volume of the second water storage chamber 320 is greater than or equal to the preset pure water total amount threshold. After the user opens the faucet to take water, the water purifier starts to prepare water, the flow meter 630 starts to accumulate the total amount of fluid flowing through it, and all of the pure water with the preset threshold value of the total amount of pure water enters the second water storage chamber 320. When the total amount of fluid is equal to a preset total amount of pure water threshold, the first pure water outlet 402 communicates with the pure water inlet 401. The water newly prepared by the water purifier flows to the water outlet 102.

Therefore, the flow meter 630 directly accumulates the amount of water flowing through, and the total amount of pure water can be set according to the water quality conditions of different regions, so as to control the total amount of the first-stage water entering the second water storage cavity 320. Therefore, the integral control of the water purifier is facilitated, and the water consumption quality of a user is ensured.

Further, the flow meter 630 is provided at the second pure water outlet 403 of the pure water path switching device 400, or between the pure water port 211a of the reverse osmosis filter element 211 and the pure water inlet 401 of the pure water path switching device 400. The application range of the flow meter 630 is expanded, and a hardware basis can be made for the expansion of the functions of the water purifier.

Illustratively, referring to FIG. 1A, a water purifier may be provided with a drain waterway 240. A first end of the drainage waterway 240 is disposed between the concentrate outlet 211b and the second inlet/outlet 321 of the reverse osmosis filter element, and a second end of the drainage waterway 240 is connected to the drain outlet 103 of the water purifier. A first drain solenoid valve 510 may be provided on the drain water path 240. The first drain solenoid valve 510 may be any valve having a function of turning on and off.

When the water purifier stores the generated concentrated water into the second water storage chamber 320, the first drain solenoid valve 510 can be controlled to be in a cut-off state, so that the concentrated water is prevented from being directly discharged from the drain port 103. When the water outlet 102 of the water purifier discharges the pure water prepared by the reverse osmosis filter element 211 in real time, the first discharge solenoid valve 510 can be controlled to be conducted, and the conducting state of the first discharge solenoid valve can be determined according to the position relationship between the first end of the discharge water channel 240 and the concentrated water control device 520, so as to ensure that the concentrated water generated by the reverse osmosis filter element 211 can be smoothly discharged through the discharge water channel 240. When the water purifier is storing water into the first water storage cavity 310, the first water discharge electromagnetic valve 510 and the concentrated water control device 520 can both be in a conduction state, so as to communicate the second water storage cavity 320 with the water discharge port 103, release the pressure in the second water storage cavity 320, and facilitate the storage of water into the first water storage cavity 310.

In one embodiment, as shown in fig. 1B, the second water inlet/outlet 321 includes a second water inlet 321a and a second water outlet 321B, and the first end of the drain water path 240 is disposed at the second water outlet 321B, and accordingly, the second end of the water path 230 is communicated to the second water inlet 321 a.

Therefore, the concentrated water utilization waterway 230 and the drainage waterway 240 can be respectively communicated to the second water storage cavity 320 through two water openings, and the pipeline communication between the concentrated water utilization waterway 230 and the drainage waterway 240 is simplified.

In still another embodiment, as shown in fig. 1C, the second water inlet/outlet port 321 includes a second water inlet port 321a and a second water outlet port 321b, the first end of the drain water path 240 is disposed between the concentrate port 211b of the reverse osmosis cartridge and the concentrate control device 520, and the first drain solenoid valve 510 is disposed on the drain water path 240. The second end of the concentrated water utilization water path 230 is communicated with the second water inlet 321 a. The water purifier further comprises a second water discharge electromagnetic valve 221, and the second water discharge electromagnetic valve 221 is disposed at the second water outlet 321 b. The second water discharge solenoid valve 221 may connect the second water storage chamber 320 to the water discharge port 103, and also to the water inlet 101 of the water purifier, which will be described in detail below. The second drain solenoid valve 221 may be any valve having a turn-on and turn-off function, and may be in a turn-off state along with the first drain solenoid valve 510 during the process that the water purifier stores the generated concentrated water into the second water storage chamber 320, so that the pressure in the second water storage chamber 320 is increased. When the water purifier is storing water to the first water storage cavity 310, the first water discharge solenoid valve 510 and the concentrated water control device 520 may both be in a conduction state, and communicate the second water storage cavity 320 with the water discharge port 103, or communicate the second water discharge solenoid valve 221, release the pressure in the second water storage cavity 320, or communicate all the above three valves, so as to facilitate faster release of the pressure in the second water storage cavity 320, and rapidly discharge water in the second water storage cavity 320.

Further, the water purifier includes a booster pump 213 and a return water path 220. A booster pump 213 is provided in the main water line 210 upstream of the reverse osmosis filter cartridge 211. The use and operation thereof are well known to those skilled in the art and will not be described in detail.

The water purifier further comprises a water return waterway 220. One end of the water return path 220 is connected to the second drain solenoid valve 221, and the other end is connected to a water inlet of the booster pump 213. That is, the second water storage chamber 320 is communicated with the main water line 210 through the return water line 220. When the second water discharge solenoid valve 221 is turned on, the water in the second water storage cavity 320 may be guided to the water inlet of the booster pump 213, and then pressed into the reverse osmosis filter element 211 by the booster pump 213 for filtration and use, instead of being directly discharged out of the water purifier.

Therefore, the water purifier with the return water path 220 can guide the water in the second water storage cavity 320 to flow back to the main water path 210, filter the water and recycle the water, thereby reducing the waste of water resources.

Illustratively, as shown in fig. 5, the rich water control device 520 and the first drain solenoid valve 510 may be implemented with a rich water path switching device 500, wherein the rich water path switching device 500 may be a one-in two-out solenoid valve.

For example, the concentrate control device 520 may also use a separate solenoid valve to perform its function. The rich water control device 520 is not associated with the control logic of the first and second

drain solenoid valves

510 and 221, and can perform independent actions.

Refer to the schematic view of the waterway shown in fig. 1A. The deionized water path switching means 400 includes a first deionized water solenoid valve 410 and a second deionized water solenoid valve 420 connected in parallel, the first deionized water solenoid valve 410 communicating between the deionized water port 211a and the first water inlet/outlet port 311, and the second deionized water solenoid valve 420 communicating between the deionized water port 211a and the second water inlet/outlet port 321.

After the first pure water solenoid valve 410 is turned on, water may flow into the first water storage chamber 310 or to the water outlet 102. After the second pure water solenoid valve 420 is turned on, water may flow into the second water storage chamber 320. In order to allow only one flow path to be in a connected state at the same time during use, a linkage may be provided between the first deionized water solenoid valve 410 and the second deionized water solenoid valve 420, or the solenoid valves on the two water paths may be controlled by a main control unit. Thus, only one of the first deionized water solenoid valve 410 and the second deionized water solenoid valve 420 in the deionized water path switching device 400 is in a conducting state at one time.

In the water path diagram shown in fig. 5, the pure water path switching device 400 includes a pure water one-in two-out solenoid valve 430, a pure water inlet 401 of the pure water one-in two-out solenoid valve 430 is connected to a pure water outlet 211a, and two water outlets of the pure water one-in two-out solenoid valve 430 are respectively connected to a first water inlet and a second water outlet 311 321.

Thus, the pure water waterway switching device 400 can be switched between two waterway modes only by one component, and the waterway structure can be simplified.

In the above-described embodiment, the concentrate control device 520 is provided on the concentrate-water utilizing circuit 230. Fig. 6 shows a schematic water path diagram of a water purifier according to another embodiment of the present invention. As shown in fig. 6, the rich water control device 520 may also be provided on the drain water path 240. A first end of the drainage water path 240 is disposed between the concentrate outlet 211b of the reverse osmosis filter element 211 and the second water inlet/outlet 321, and a second end of the drainage water path 240 is connected to the drainage outlet 103 of the water purifier.

The water purifier comprises a water drainage waterway 240, so that the concentrated water generated by the reverse osmosis filter element 211 can be smoothly discharged. The concentrated water control device 520 is provided in the drainage water path 240 or the concentrated water utilization water path 230, so that the flow direction of the drained concentrated water can be timely controlled, and the normal operation of the water purifier is ensured.

The water purifier shown in fig. 6 may also include a main control device. The main control device can also be electrically connected with the concentrated water control device 520. The main control unit can control the concentrated water control device 520 to be turned off when receiving an electric signal indicating that water intake is started or when the water purifier enters a standby state. When the user just starts to take water when receiving an electric signal indicating that water intake is started or when the water purifier enters a standby state, the water is supplied to the user from the first water storage chamber 310 of the water storage device 300. At this time, the concentrate control device 520 on the drain line 240 may be controlled to be turned off, so that it is ensured that the pure water and the concentrate from the reverse osmosis filter element 211 can flow into the second water storage chamber 320, and further squeeze the first water storage chamber 310, so as to facilitate the water intake operation of the user, rather than being discharged to the drain port 103 via the concentrate control device 520. The main control means controls the concentrate control means 520 to be turned on when a second predetermined period of time elapses after receiving the electric signal indicating the start of water intake or according to the detection signal from the second detection means. The second predetermined period of time may be determined according to the rate at which the pure water and the concentrated water of the reverse osmosis filter element 211 flow into the second water storage chamber 320 (i.e., the rate at which the pure water flows out of the first water storage chamber 310) and the volume of the first water storage chamber 310. When a second predetermined period of time elapses after receiving the electric signal indicating the start of taking water, the pure water in the first water storage chamber 310 is completely discharged. At this time, the conduction of the concentrated water control device 520 can be controlled, and the conducted concentrated water control device 520 can have a throttling function, for example, when the concentrated water control device 520 is conducted, a throttling hole with a small drift diameter is opened, so that concentrated water generated by the reverse osmosis filter element 211 can be discharged, and the situation that the water pressure of the second water storage cavity 320 disappears due to the opening of the concentrated water control device 520, so that pure water generated by the reverse osmosis filter element 211 is firstly filled into the first water storage cavity 310 can be avoided. The pure water prepared by the reverse osmosis filter element 211 in real time flows to the water outlet 102 of the water purifier for a user to take. Alternatively, the concentrate control means 520 may also be controlled to be turned on in accordance with a detection signal from the second detection means. The second detection means may be a flow meter or a pressure sensor or the like. For example, a second detecting means may be provided at each water inlet and outlet of the water storage means to determine whether the pure water in the first water storage chamber 310 of the water storage means has been completely discharged. A person skilled in the art can understand the specific implementation manner of the second detection device by reading the above descriptions of the flow meter and the pressure sensor, and combining the functions of the second detection device, and details are not described herein for brevity.

Fig. 7 shows a schematic water path diagram of a water purifier according to another embodiment of the present invention. As shown in fig. 7, the water purifier includes a booster pump 213 and a return water path 220. A booster pump 213 is provided upstream of the reverse osmosis filter element 211 on the main water line 210. The first end of the return water path 220 is arranged at the second water inlet/outlet 321, and the second end of the return water path 220 is connected to the water inlet of the booster pump. The return water path 220 is provided with a concentrated water control device 520.

Similar to the water purifier shown in fig. 6, the water purifier shown in fig. 7 may also comprise a main control device. The main control device can also be electrically connected with the concentrated water control device 520. The main control device can control the concentrated water control device 520 to be cut off when receiving an electric signal indicating that water taking is started or when the water purifier enters a standby state. Therefore, only water flows into the second water storage cavity 320 of the water storage device, but no water flows out, and the first water storage cavity 310 is further extruded, so that pure water in the first water storage cavity 310 flows out through the water outlet 102. The main control device can also control the concentrated water control device to be conducted when a second preset time period passes after receiving the electric signal indicating the start of water taking or according to a detection signal from the second detection device. Thus, the concentrate of the reverse osmosis filter element 211 flows to the water inlet of the booster pump 213 through the concentrate control device 520, and is again subjected to the circulation filtration through the reverse osmosis filter element 211.

The water purifier is only provided with the concentrated water control device 520 on the return water path 220, so that the water path is simple and the cost is low; and effectively utilizes the concentrated water generated by the reverse osmosis filter element 211, thereby avoiding water resource waste.

Illustratively, as shown in fig. 8, the water storage device 300 includes a body 330 and a water stop 340. The volume of the body 330 is fixed. The water stopper 340 is disposed in the body 330 to partition a space in the body 330 into the first and second

water storage chambers

310 and 320, and at least a portion of the water stopper 340 is made of a deformable material to change a shape according to the water pressure in the chambers of the first and second

water storage chambers

310 and 320.

The water blocking member 340 divides the body 330 into the first water storage cavity 310 and the second water storage cavity 320 which are not communicated with each other, when water flows into one of the cavities, the pressure of the cavity is increased, and the water blocking member 340 is pushed by the pressure to change the original shape of the water blocking member 340.

If the water stop 340 is a bladder structure, the water in the cavity with high pressure will press the water stop 340, deforming the water stop 340 and squeezing out the water in the cavity with low pressure.

Optionally, the water stop 340 may also be a diaphragm structure, and will protrude toward the cavity with low pressure under the action of water pressure, so as to squeeze out water in the cavity on the side with lower pressure.

Therefore, at least a part of the water blocking member 340 is flexible and can change the shape, so that the water blocking member can be conveniently installed in the body 330, and the occupied space is small, so that the water storage device 300 has high integration level.

The structure of the water storage device 300 is similar to that of the water driving device in the prior art, and is well known to those skilled in the art, which is not the content discussed in the present invention and will not be described in detail.

The following will describe the work flow of the water purifier according to an embodiment of the present invention with reference to fig. 5. Wherein, the pure water waterway switching device 400 is a one-inlet two-outlet solenoid valve, and the concentrated water waterway switching device 500 is also a one-inlet two-outlet solenoid valve; the two-water-path switching device can switch between the first pure water outlet 402 and the second pure water outlet 403 and between the first concentrated water outlet 502 and the second concentrated water outlet 503 according to the electric signal received from the first high-voltage switch; the second water storage chamber 320 is communicated to the front end of the booster pump 213 through the second water discharge solenoid valve 221; the water outlet device communicated with the water outlet 102 is a mechanical faucet and is arranged at the downstream of the first high-pressure switch 212.

The process of using the water purifier to obtain water by a user may include two stages, the first stage of obtaining water from the first water storage chamber 310 of the water storage device 300, and the second stage of directly obtaining pure water produced by the reverse osmosis filter element 120 in real time. The two stages are respectively a water taking stage and a water making and taking stage of the water storage device. In this embodiment, the two phases are divided based on a first preset time threshold T1, and the water taking phase for the water storage device is started before the user takes water to the first preset time threshold T1; after reaching the first preset time threshold T1, the water production and intake phase will be entered.

In actual use, two conditions exist, one is that after a user opens the faucet, the water purifier enters the water taking stage of the water storage device from a standby state, after the first preset time threshold value T1 is reached, namely after the water taking stage of the water storage device is finished, the faucet is still opened, the user continues to take water, and then the water purifier enters the water taking stage of the water production until the user finishes taking water. After the faucet is closed, the water purifier enters a water storage stage and stores water in the first water storage cavity of the water storage device. And after the water storage stage is finished, the water purifier enters the standby state again.

In another case, after the user opens the faucet, the water purifier enters the water intake stage of the water storage device from the standby state, and when the first preset time threshold T1 has not been reached, that is, the water intake stage of the water storage device has not been completed, the user closes the faucet to stop taking water, and the water purifier will directly enter the water storage stage after the first preset time threshold T1 has been reached. And after the water storage stage is finished, the water purifier enters the standby state again.

When the water intake time is longer than T1, in the standby state, the pure water inlet 401 of the pure water waterway switching device 400 is communicated with the second pure water outlet 403, the concentrated water inlet 501 of the concentrated water waterway switching device 500 is communicated with the second concentrated water outlet 503, the second drain electromagnetic valve 221 is turned off, the first high-pressure switch 212 is in the off state, the booster pump 213 is in the stop state, and the first water storage cavity 310 is filled with the directly drinking water prepared last time. When the faucet is opened, the water pressure of the pipeline where the first high-pressure switch 212 is located is reduced, the first high-pressure switch 212 is turned off for the first time, the booster pump 213 is started to start water production, the water purifier enters a water taking stage of the water storage device, and the main control device starts timing.

The prepared water and the concentrated water discharged by the reverse osmosis filter element 211 enter the second water storage cavity 320, the water stop piece 340 is pushed to squeeze the water in the first water storage cavity 310 to flow out from the faucet, and the user receives the direct drinking water pre-stored in the first water storage cavity 310 in the last water making cycle.

After the time reaches T1, the main control device connects the pure water inlet 401 of the pure water waterway switching device 400 with the first pure water outlet 402, and the concentrated water inlet 501 of the concentrated water waterway switching device 500 with the first concentrated water outlet 502. The water purifier enters a water preparing and taking stage. At this point, the water taken by the user will be directly prepared by the reverse osmosis cartridge 211.

Until the user stops getting water, and after the faucet is closed, the pressure of the pipeline where the first high-pressure switch 212 is located rises, and the first high-pressure switch 212 is switched from closed to open for the first time. After receiving the electrical signal that the first high-voltage switch 212 is turned off from on for the first time, the main control device controls the second drain solenoid valve 221 to be switched to the on state. The pressure in the second water storage chamber 320 is released, and the pressure in the pipeline where the first high-pressure switch 212 is located is released, so that the first high-pressure switch 212 is turned on from the open state for the second time. At this time, the water purifier enters a water storage stage. The newly prepared water is stored in the first water storage chamber 310 to be used after the faucet is opened by the user next time.

When the first water storage chamber 310 is full of water, the pressure of the pipeline where the first high-pressure switch 212 is located will rise again, and the first high-pressure switch 212 is turned from on to off for the second time. Second drain solenoid valve 221 is turned off and turned to the off state, and pure water inlet 401 of pure water waterway switching device 400 is again communicated with second pure water outlet 403. The concentrate inlet 501 of the concentrate waterway switching device 500 is again communicated with the second concentrate outlet 503. The booster pump 213 stops operating. The water purifier enters a standby state.

Thus, one working cycle of the water purifier is finished.

In yet another operation, the user stops fetching water when the time has not reached the first preset time threshold T1.

In the standby state, the pure water inlet 401 of the pure water waterway switching device 400 is communicated with the second pure water outlet 403, the concentrated water inlet 501 of the concentrated water waterway switching device 500 is communicated with the second concentrated water outlet 503, the second drainage electromagnetic valve 221 is closed, the first high-voltage switch 212 is in the off state, the booster pump 213 is in the stop state, and the first water storage cavity 310 is filled with the directly drinking water prepared at the last time. When the faucet is opened, the first high-voltage switch 212 is turned off for the first time, the booster pump 213 is started to produce water, the water purifier enters a water taking stage of the water storage device, and the main control device starts to time. The prepared water and the concentrated water discharged by the reverse osmosis filter element 211 enter the second water storage cavity 320, the water stop piece 340 is pushed to squeeze the water in the first water storage cavity 310 to flow out from the faucet, and the user receives the direct drinking water pre-stored in the first water storage cavity 310 in the last water making cycle.

When the time has not reached the first preset time threshold T1, the user stops fetching water. After the faucet is turned off, since the booster pump 213 is still producing water to the second water storage chamber 320, the pressure of the first water storage chamber 310 will rise, and the first high-voltage switch 212 will be turned off from being closed for the first time. After receiving the signal that the first high-voltage switch 212 is turned off from on for the first time, the main control device controls the second drain solenoid valve 221 to be switched to the on state. At this time, the pure water path switching device 400 and the concentrated water path switching device 500 are still in the conventional connected state, and the second drain solenoid valve 221 is turned on. The newly prepared water flows to the front end of the booster pump 213 through the second drain solenoid valve 221 to be filtered again by the reverse osmosis filter 211.

When the time reaches a first preset time threshold T1, the main control device disconnects the pure water inlet 401 of the pure water waterway switching device 400 from the second pure water outlet 403 and communicates the same to the first pure water outlet 402, and disconnects the concentrated water inlet 501 of the concentrated water waterway switching device 500 from the second concentrated water outlet 503 and communicates the same to the first concentrated water outlet 502. The water purifier enters a water storage stage. The water prepared by the water purifier enters the first water storage chamber 310 through the first pure water outlet 402. The first water storage chamber 310 pushes the water blocking member 340 to push the water in the second water storage chamber 320 to the front end of the booster pump 213 for re-filtration. And the concentrated water discharged from the reverse osmosis filter element is discharged through the water discharge port 103. Since the second drain solenoid valve 221 is still in the on state at this time, and the drainage capacity of the second drain solenoid valve 221 is greater than the water inlet capacity of the first water inlet/outlet port 311, the pressure of the pipe where the first high-pressure switch 212 is located is reduced. First high voltage switch 212 transitions from open to closed a second time.

When the first water storage chamber 310 is full of water, the first high voltage switch 212 is turned from on to off for the second time. Second drain solenoid valve 221 is turned off and turned to the off state, and pure water inlet 401 of pure water waterway switching device 400 is again communicated with second pure water outlet 403. The concentrate inlet 501 of the concentrate waterway switching device 500 is again communicated with the second concentrate outlet 503. And the booster pump 213 stops operating. The water purifier enters a standby state.

Thus, another working cycle of the water purifier is finished.

It is to be understood that, although in the above-described embodiment, the main control device controls the second drain solenoid valve 221 to be closed when the water purifier enters the standby state, controls the pure water inlet 401 of the pure water path switching device 400 to communicate with the second pure water outlet 403 again, and controls the concentrated water inlet 501 of the concentrated water path switching device 500 to communicate with the second concentrated water outlet 503. However, the above operation may be performed when the user starts to take water, that is, when the electric signal that the first high-voltage switch 212 is turned from off to on is received for the first time, instead of being performed when the water purifier enters the standby state as in this embodiment.

Further, although the embodiment shows that the actions of the two waterway switching devices are controlled only according to the electric signal of the first high-voltage switch 212, as described above, the actions of the two waterway switching devices may be controlled based on both the first high-voltage switch 212 and the detection signal of the first detection device.

In the above embodiment, the main control device controls the second drain solenoid valve 221 to be turned on and off based on the first high-voltage switch 212, so that the control logic of the water purifier can be simplified, and the automatic water storage and drainage of the first water storage cavity 310 and the second water storage cavity 320 can be realized, thereby realizing the functions of the water purifier.

The first predetermined time threshold T1 may be equal to or greater than the time required for the reverse osmosis cartridge 211 to discharge the first section of higher TDS water. Meanwhile, the volume of the first water storage cavity 310 needs to be larger than the total amount of pure water prepared by the reverse osmosis filter element 211 within the first preset time threshold T1, so that the water taking stage of the water purifier is changed to the water preparation and taking stage from the water storage device when or before all the water in the first water storage cavity 310 is taken by the user. The problem that the water in the first water storage cavity 310 is completely taken out and the water purifier is still in the water taking stage of the water storage device is solved, so that the water purifier does not flow out, and the use experience of a user is influenced.

The pure water channel switching device 400 and the concentrated water channel switching device 500 may be controlled by the time threshold in the above embodiments, and may be controlled by using the water flow pressure, flow rate, and water quality detection results. Similarly, if the water intake stage and the water preparation stage of the water storage device are determined according to the flow rate, the volume of the first water storage chamber 310 may be equal to or greater than the preset flow rate threshold value, so that after the water with the preset flow rate threshold value enters the second water storage chamber 320, sufficient water can be extruded from the first water storage chamber 310.

In the above embodiments, the water purifier shown in fig. 5 is used to describe the work flow of the water purifier, and those skilled in the art can understand the work flow of the water purifier by combining this description and the foregoing description about the water purifier in other embodiments, and for brevity, the description is omitted here.

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 purifier comprises a main water pipeline (210) communicated to a water outlet (102) of the water purifier, wherein a reverse osmosis filter element (211) is arranged on the main water pipeline; the water purifier also comprises a water storage device (300) which comprises a first water storage cavity (310) and a second water storage cavity (320), wherein the first water storage cavity is provided with a first water inlet and outlet (311) communicated with the water outlet, the second water storage cavity is provided with a second water inlet and outlet (321), and the volumes of the first water storage cavity and the second water storage cavity can be changed according to the water pressure in the cavities;

the water purifier is characterized by further comprising a pure water waterway switching device (400), wherein the pure water waterway switching device is provided with a pure water inlet (401), a first pure water outlet (402) and a second pure water outlet (403), the pure water inlet is communicated to a pure water port (211a) of the reverse osmosis filter element, the first pure water outlet is communicated to the first water inlet and outlet, and the second pure water outlet is communicated to the second water inlet and outlet;

the water purifier further comprises a concentrated water utilization water channel (230), wherein the first end of the concentrated water utilization water channel is communicated with a concentrated water inlet (211b) of the reverse osmosis filter element, and the second end of the concentrated water utilization water channel is communicated with the second water inlet and outlet.

2. The water purifier of claim 1, further comprising a master control device electrically connected to the pure water waterway switching device (400).

3. The water purification machine according to claim 2, wherein a first high-pressure switch (212) is arranged on the main water pipeline (210) downstream of the reverse osmosis filter element (211), and is electrically connected with the main control device.

4. The water purifier according to claim 2 or 3, further comprising a water quality detector (610) for detecting the total amount of soluble solids of the pure water produced by the reverse osmosis filter element (211), the water quality detector being electrically connected to the main control unit.

5. The water purifier according to claim 4, wherein the water quality detector (610) is arranged between the second purified water outlet (403) and the second water inlet/outlet (321) or between the purified water outlet (211a) of the reverse osmosis filter element (211) and the purified water inlet (401) of the purified water circuit switching device (400).

6. The water purifier according to claim 2 or 3, further comprising a pressure sensor (620) for detecting a water pressure between the second pure water outlet (403) of the pure water waterway switching device (400) and the water storage device (300), wherein the pressure sensor is electrically connected to the main control device.

7. The water purifier according to claim 6, wherein the pressure sensor (620) comprises a second high pressure switch, the second high pressure switch is arranged between the second pure water outlet (403) of the pure water waterway switching device (400) and the water storage device (300), and the second high pressure switch is turned off when the water pressure is greater than or equal to a preset pressure threshold value.

8. The water purifier as claimed in claim 2 or 3, further comprising a flow meter (630) for detecting the total amount of pure water produced by the reverse osmosis filter element (211), wherein the flow meter is electrically connected to the main control device.

9. The water purifier according to claim 8, wherein the flow meter (630) is arranged at the second pure water outlet (403) of the pure water circuit switching device (400) or between the pure water port (211a) of the reverse osmosis cartridge (211) and the pure water inlet (401) of the pure water circuit switching device.

10. The water purifier according to any one of claims 1 to 3, further comprising a water discharge channel (240), wherein a first end of the water discharge channel is arranged between the concentrate water inlet (211b) and the second water inlet/outlet (321) of the reverse osmosis filter element (211), a second end of the water discharge channel is connected with the water outlet (103) of the water purifier, and a concentrate control device (520) is arranged on the water discharge channel or the concentrate utilization channel (230).

11. The water purifier according to claim 10, wherein the concentrate control means (520) is provided on the concentrate utilization water path (230), and the drain water path (240) is provided with a first drain solenoid valve (510).

12. The water purification machine according to claim 11, wherein the second water inlet/outlet (321) comprises a second water inlet (321a) and a second water outlet (321 b);

the first end of the drainage waterway (240) is arranged between a concentrate port (211b) of the reverse osmosis filter element (211) and the concentrate control device (520);

the second end of the concentrated water utilization waterway (230) is communicated with the second water inlet;

the water purifier further comprises a second water discharge electromagnetic valve (221), and the second water discharge electromagnetic valve is arranged at the second water outlet.

13. The water purification machine according to claim 12, further comprising a booster pump (213) disposed upstream of said reverse osmosis cartridge (211) on said main water line (210), and a return water line (220) having one end connected to said second drain solenoid valve (221) and the other end connected to a water inlet of said booster pump.

14. The water purification machine according to claim 11, wherein said concentrate control means (520) and said first drain solenoid valve (510) are implemented with a concentrate water circuit switching means (500).

15. The water purification machine according to claim 10, wherein said concentrate control means (520) is realized by an independent solenoid valve.

16. The water purifier according to any one of claims 1 to 3, further comprising a booster pump (213) and a return water circuit (220), wherein the booster pump is arranged on the main water circuit (210) upstream of the reverse osmosis filter element (211), a first end of the return water circuit is arranged at the second water inlet/outlet (321), a second end of the return water circuit is connected to a water inlet of the booster pump, and a concentrated water control device (520) is arranged on the return water circuit.

17. A water purifier according to any one of claims 1 to 3, wherein said purified water circuit switching means (400) comprises a first purified water solenoid valve (410) and a second purified water solenoid valve (420) connected in parallel, said first purified water solenoid valve communicating between said purified water outlet (211a) and said first water inlet/outlet (311), said second purified water solenoid valve communicating between said purified water outlet and said second water inlet/outlet (321).

18. The water purifier according to any one of claims 1 to 3, wherein the pure water waterway switching device (400) comprises a pure water one-in two-out solenoid valve (430), a water inlet of the pure water one-in two-out solenoid valve is connected to the pure water inlet (211a), and two water outlets of the pure water one-in two-out solenoid valve are respectively connected to the first water inlet and outlet (311) and the second water inlet and outlet (321).

19. The water purification machine according to any one of claims 1 to 3, wherein the water storage means (300) comprises a body (330) having a constant volume and a water stop (340) provided in the body to divide the space inside the body into the first water storage chamber (310) and the second water storage chamber (320), at least a portion of the water stop being made of a deformable material to change shape according to the water pressure inside the first water storage chamber and the second water storage chamber.

20. A water purification machine according to any one of claims 1 to 3, wherein the second water inlet/outlet (321) comprises a pure water inlet and a concentrated water inlet;

the second pure water outlet (403) of the pure water waterway switching device (400) is communicated to the pure water inlet;

the second end of the concentrated water utilizing water path (230) is communicated to the concentrated water inlet.