CN212924491U - Water purifier - Google Patents

Abstract

The utility model provides a water purifier. The purifier includes the booster pump, the reverse osmosis filter core, the suction pump, water storage device and first solenoid valve, the delivery port of booster pump communicates to the former mouth of a river of reverse osmosis filter core, water storage device includes first appearance chamber, second appearance chamber and current-limiting channel, the lower part in first appearance chamber and the lower part in second appearance chamber communicate through current-limiting channel, water storage device has water inlet and delivery port, water storage device's delivery port includes first delivery port, first delivery port is located first appearance chamber, the water inlet is located the second appearance chamber, the pure water outlet of reverse osmosis filter core communicates respectively to water storage device's water inlet and the play water end of purifier, first solenoid valve intercommunication is between the pure water outlet of reverse osmosis filter core and the play water end of purifier, first delivery port communicates to the water inlet of suction pump, the delivery port of suction pump. The water purifier adopting the water storage device can effectively avoid the user from receiving water with higher TDS and increasing the water outlet flow of the water purifier.

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 for quality of life, the water quality is getting more attention. Reverse osmosis water purifiers are becoming more popular because the purified water produced by them is fresher, more sanitary and safer.

The raw water has higher TDS (total dissolved solids) more, and the reverse osmosis filter core can block a large amount of ions in the raw water in front of the reverse osmosis membrane under the effect of the booster pump, so that the TDS of the water passing through the reverse osmosis membrane meets the standard of direct drinking water. Meanwhile, the reverse osmosis filter element can discharge concentrated water with high TDS according to a certain proportion when preparing direct drinking water. In the process of water production, although concentrated water can be discharged through a concentrated water pipeline, a small amount of concentrated water still remains in the reverse osmosis filter element before the reverse osmosis membrane after the water production is finished. After the long-time standby, according to the principle that the ion diffuses from high concentration solution to low concentration solution, the ion of the higher aquatic of TDS before the reverse osmosis membrane can diffuse to the aquatic in the membrane bag, and when the next water intaking, the TDS that the user accepted the water of getting is higher.

In order to solve the problem, the practice of the prior art is to periodically start the booster pump to flush the reverse osmosis filter element when the water purifier is in a standby state, which causes serious waste of water resources and increases water consumption cost.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art at least partially, the utility model provides a water purifier. The water purifier comprises a booster pump, a reverse osmosis filter element, a water pump, a water storage device and a first electromagnetic valve, wherein a water outlet of the booster pump is communicated with a raw water port of the reverse osmosis filter element, the water storage device comprises a first cavity, a second cavity and a flow-limiting channel, the lower part of the first cavity is communicated with the lower part of the second cavity through the flow-limiting channel, the water storage device is provided with a water inlet and a water outlet, a water outlet of the water storage device comprises a first water outlet, the first water outlet is positioned on the first cavity, the water inlet is positioned on the second cavity, a pure water outlet of the reverse osmosis filter element is respectively communicated with a water inlet of the water storage device and a water outlet end of the water purifier, the first electromagnetic valve is communicated between the pure water outlet of the reverse osmosis filter element and the water outlet end of the water purifier, and the, and a water outlet of the water suction pump is communicated to a water outlet end of the water purifier.

The water purifier adopting the water storage device can effectively prevent a user from receiving water with higher TDS, and ensure the water safety of the user; meanwhile, the water storage device is reasonable in water path, the water outlet flow of the water purifier is increased, the water taking time of a user is shortened, and the use experience is good.

Illustratively, the water purifier still includes the controller, the controller is electrically connected to respectively the first solenoid valve with the suction pump, the controller is when receiving the signal of beginning to get water the electric signal when accumulative total time of getting water and open the suction pump, the controller is when the time of getting water is greater than or equal to the time threshold of presetting first section water and opens first solenoid valve. The water intake time of the water purifier is compared with the preset first-stage water time threshold value through the setting controller, the first electromagnetic valve can be opened in time, and the water flow of the water purifier is increased while the water acquired by a user is ensured to meet the standard.

Illustratively, the water purifier further comprises a detector and a controller, the controller is electrically connected to the detector, the first electromagnetic valve and the water pump respectively, the controller turns on the water pump when receiving an electric signal for starting to take water, the detector is used for acquiring detection data, the controller turns on the first electromagnetic valve when the detection data reaches a preset threshold value, and the detector comprises one or two of the following components: the flow meter is arranged between a pure water outlet of the reverse osmosis filter element and a water inlet of the water storage device, in this case, the detection data comprise total water passing amount, the preset threshold comprises a preset total water passing amount threshold, and the controller opens the first electromagnetic valve when the total water passing amount is larger than or equal to the preset total water passing amount threshold; the liquid level meter, the level meter is including setting up first level meter and/or setting on the first appearance chamber are in second level meter on the second appearance chamber, under this condition, detected data includes the liquid level, predetermine the threshold value including predetermineeing first section water liquid level threshold value, the controller is in the liquid level is less than or equal to open when predetermineeing first section water liquid level threshold value first solenoid valve. The total amount and/or the liquid level of the water can be detected by arranging the detector and the controller, and the total amount and/or the liquid level of the water can be compared with respective preset threshold values, so that the first electromagnetic valve is opened in time, the water acquired by a user is ensured to meet the standard, and meanwhile, the water outlet flow of the water purifier is increased.

Exemplarily, the water purifier further comprises a backflow electromagnetic valve, and the backflow electromagnetic valve is communicated between a water outlet of the water storage device and a water inlet of the booster pump. The backflow solenoid valve can be regularly opened when the purifier standby to the water in the water storage device is drained to the greatest extent, and the discharged water is sent back to the reverse osmosis filter core again through the booster pump and is filtered the back and store in the water storage device, thereby reduces the TDS of the water in the water storage device.

Exemplarily, the water purifier further comprises a second electromagnetic valve and a water pumping electromagnetic valve, the second electromagnetic valve is communicated between the pure water outlet of the reverse osmosis filter element and the water inlet of the water storage device, the first electromagnetic valve and the second electromagnetic valve are connected in parallel, and the water pumping electromagnetic valve is located on a pipeline where the water pumping pump is located. Therefore, the waterway can be more flexibly controlled, and the use experience of a user is improved.

Illustratively, a water inlet of the backflow electromagnetic valve is directly communicated to a water outlet of the water storage device, the water purifier further comprises a controller, the controller is electrically connected to the second electromagnetic valve, the backflow electromagnetic valve, the water suction pump and the water pumping electromagnetic valve respectively, wherein when the controller receives an electric signal for starting to take water, the controller accumulates a first water taking time and opens the second electromagnetic valve, the water suction pump and the water pumping electromagnetic valve; when the first water taking time length is greater than or equal to a first preset water taking time length threshold value, the controller opens the backflow electromagnetic valve and closes the second electromagnetic valve, the water suction pump and the water suction electromagnetic valve; the controller closes the backflow electromagnetic valve when the first water taking time length is greater than or equal to a second preset water taking time length threshold value, and the second preset water taking time length threshold value is greater than the first preset water taking time length threshold value. From this, can reduce the TDS of the water in the water storage device, still carry to the user when avoiding the TDS of remaining water in the water storage device to be higher.

Illustratively, a water inlet of the backflow solenoid valve is directly communicated to a water outlet of the water storage device, the water purifier further comprises a liquid level meter and a controller, the liquid level meter comprises a first liquid level meter arranged on the first cavity and/or a second liquid level meter arranged on the second cavity, the controller is electrically connected to the liquid level meter, the second solenoid valve, the backflow solenoid valve, the water pump and the water pumping solenoid valve respectively, and the controller opens the second solenoid valve, the water pump and the water pumping solenoid valve when receiving an electric signal for starting water taking; when the liquid level detected by the liquid level meter is lower than a first preset liquid level threshold value, the controller opens the backflow electromagnetic valve and closes the second electromagnetic valve, the water suction pump and the water suction electromagnetic valve; and when the liquid level detected by the liquid level meter is lower than a second preset liquid level threshold value, the controller closes the backflow electromagnetic valve and keeps opening the first electromagnetic valve, and the second preset liquid level threshold value is lower than the first preset liquid level threshold value. Through this kind set up level gauge and controller, can reduce the TDS of the water in the water storage device, still carry to the user when avoiding the TDS of remaining water in the water storage device to be higher.

Exemplarily, the water outlet of the water storage device further comprises a second water outlet, and the backflow electromagnetic valve is communicated between the second water outlet and the water inlet of the booster pump. Through setting up the second delivery port, the booster pump can be earlier with the water pump income reverse osmosis filter core in the second appearance intracavity, and the TDS of water storage device internal water drops sooner.

Illustratively, a water inlet of the water pumping electromagnetic valve is communicated to a water outlet of the water pumping pump, a water inlet of the backflow electromagnetic valve is communicated to a water outlet of the water pumping pump, and the water pumping electromagnetic valve and the backflow electromagnetic valve are connected in parallel. Therefore, the number of the water outlets of the water storage device can be reduced, and the material consumption of the pipeline in the water purifier is reduced. In addition, the water suction pump can assist the booster pump to discharge the water in the water storage device quickly.

Illustratively, the water purifier further comprises a controller, the controller is electrically connected to the second electromagnetic valve, the backflow electromagnetic valve, the water pump and the water pumping electromagnetic valve respectively, wherein when the controller receives an electric signal for starting to take water, the controller accumulates a second water taking time period and opens the second electromagnetic valve, the water pump and the water pumping electromagnetic valve; when the second water taking time length is greater than or equal to a third preset water taking time length threshold value, the controller opens the backflow electromagnetic valve, keeps opening the water suction pump and closes the second electromagnetic valve and the water suction electromagnetic valve; the controller closes the backflow electromagnetic valve and the water suction pump when the second water taking time length is greater than or equal to a fourth preset water taking time length threshold value, and the fourth preset water taking time length threshold value is greater than a third preset water taking time length threshold value. From this, can reduce the TDS of the water in the water storage device, still carry to the user when avoiding the TDS of remaining water in the water storage device to be higher. In addition, the water pump in the water storage device is assisted by the water suction pump to be arranged in front of the booster pump, so that the draining speed in the water storage device can be accelerated.

Exemplarily, the water purifier further comprises a liquid level meter and a controller, the liquid level meter comprises a first liquid level meter arranged on the first cavity and/or a second liquid level meter arranged on the second cavity, the controller is electrically connected to the second solenoid valve, the backflow solenoid valve, the water pump, the water pumping solenoid valve and the liquid level meter respectively, wherein the controller opens the second solenoid valve, the water pump and the water pumping solenoid valve when receiving an electrical signal for starting to take water; when the liquid level detected by the liquid level meter is lower than a third preset liquid level threshold value, the controller opens the backflow electromagnetic valve, keeps opening the water suction pump and closes the second electromagnetic valve and the water suction electromagnetic valve; the controller closes the backflow electromagnetic valve and the water suction pump when the liquid level detected by the liquid level meter is lower than a fourth preset liquid level threshold value, and the fourth preset liquid level threshold value is lower than a third preset liquid level threshold value. Through this kind set up level gauge and controller, can reduce the TDS of the water in the water storage device, still carry to the user when avoiding the TDS of remaining water in the water storage device to be higher. In addition, the water pump in the water storage device is assisted by the water suction pump to be arranged in front of the booster pump, so that the draining speed in the water storage device can be accelerated.

Illustratively, the water purifier further comprises a liquid level meter and a controller, wherein the liquid level meter comprises a first liquid level meter arranged on the first cavity and/or a second liquid level meter arranged on the second cavity, the controller is electrically connected to the first electromagnetic valve, the second electromagnetic valve and the liquid level meter respectively, and when the controller receives an electric signal for stopping taking water, the controller closes the first electromagnetic valve and opens the second electromagnetic valve to store water into the water storage device; the controller stops water storage when the liquid level detected by the liquid level meter is higher than or equal to the upper liquid level limit. By the arrangement, the water quantity in the water storage device can be ensured to be sufficient before the next water taking, and the water storage device is ready for the next water taking.

Illustratively, the communication port of the flow limiting channel and the first cavity is located at a first side of the first cavity, the first water outlet is located at a second side of the first cavity, and the first side is opposite to the second side. Like this, the higher water of TDS of intracavity is held to the second flows to the distance of first delivery port far enough to make the higher water of these TDS can hold original pure water intensive mixing in the chamber with first, ensure that the pump can accord with user operation requirement more to the hydroenergy of the play water end of purifier.

Exemplarily, the water storage device further comprises an overflow preventing passage, and the top of the first cavity and the top of the second cavity are communicated through the overflow preventing passage. Through setting up anti-overflow water passageway, when the liquid level that leads to the second to hold the chamber too high because of the current-limiting effect of current-limiting channel, water can flow into first appearance intracavity through anti-overflow water passageway, prevents water storage device overflow. And, through the volume that the second set up the second appearance chamber rationally, when the second appearance chamber was filled up, the higher water of first section TDS had been arranged to the reverse osmosis filter core, and the pure water that the TDS that the reverse osmosis filter core was prepared accords with the standard like this can directly flow in first appearance intracavity through anti-overflow water passageway.

Illustratively, the water storage device includes a tank and a barrier disposed within the tank to separate a space within the tank into the first and second cavities, wherein the barrier is spaced from a bottom wall of the tank to form the restricted flow passage; or/and the barrier is spaced apart from the top wall of the water tank to form the water flood prevention passage. Therefore, the water storage device is simple in structure and low in production cost.

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 path diagram of a water purifier according to an exemplary embodiment of the present invention; and

fig. 2 is a schematic water path diagram of a water purifier according to another exemplary embodiment of the present invention.

Wherein the figures include the following reference numerals:

100. 100', a water purifier; 110. a water inlet electromagnetic valve; 120. a booster pump; 130. a reverse osmosis filter element; 140. a water pump; 150. a return solenoid valve; 200. 200' and a water storage device; 210. a first cavity; 220. a second cavity; 230. a flow-restricting passage; 240. a water inlet; 250. a water outlet; 251. A first water outlet; 252 a second water outlet; 260. an anti-overflow water passage; 270. a water tank; 280. a barrier; 300. a water intake device; 310. a check valve; 320. a high voltage switch; 410. a first solenoid valve; 420. a second solenoid valve; 430. a water pumping electromagnetic 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.

After the long-time standby of purifier, the higher ion in the former aquatic of reverse osmosis membrane front TDS (soluble solid total) of reverse osmosis filter core can spread in the pure water in the membrane bag, leads to the TDS that the user received the water of getting when the purifier next time opens too high. In order to avoid the problem, the utility model provides a water purifier. Fig. 1 shows a schematic water path diagram of a water purifier according to an embodiment of the present invention, and arrows shown in the diagram schematically show a flow direction of water flow.

As shown in fig. 1, the water purifier 100 may include a booster pump 120, a reverse osmosis filter 130, a suction pump 140, a water storage device 200, and a first solenoid valve 410.

The water outlet of the booster pump 120 may be communicated to the raw water inlet of the reverse osmosis filter element 130, and the booster pump 120 delivers the boosted water to the reverse osmosis filter element 130. As is known to those skilled in the art, the booster pump 120 is turned on both when the user takes water and when the water is stored in the water storage device 200, and the control of the booster pump 120 will not be described below for the sake of brevity. Optionally, a water inlet solenoid valve 110 may be further disposed upstream of the booster pump 120. The water inlet solenoid valve 110 is opened when the booster pump 120 is operated, and is closed when the booster pump 120 is stopped to cut off the water path. The water inlet solenoid valve 110, the booster pump 120, the reverse osmosis cartridge 130, and the suction pump 140 may employ various types of solenoid valves, booster pumps, reverse osmosis cartridges, and suction pumps known in the art or that may occur in the future. It should be noted that only the reverse osmosis membrane may be disposed in the reverse osmosis filter element 130; optionally, the reverse osmosis filter element 130 may also be a composite filter element formed by combining a reverse osmosis membrane and other filter materials.

The water reservoir 200 may include a first volume 210, a second volume 220, and a restricted flow passage 230. The lower portion of the first receiving chamber 210 and the lower portion of the second receiving chamber 220 are communicated through a restricted flow passage 230. Preferably, the flow restricting passage 230 communicates between the bottom of the first receptacle 210 and the bottom of the second receptacle 220. First and second cavities 210 and 220 may be a single piece, as will be described in more detail below. Alternatively, the first and second chambers 210 and 220 may be two separate pieces independent of each other, in which case the restricted flow passage 230 may take the form of a pipe. The volume of first volume 210 and the volume of second volume 220 may be the same or different. Preferably, the volume of the first cavity 210 may be smaller than the volume of the second cavity 220. The water storage device 200 may have a water inlet 240 and a water outlet 250. The water outlet 250 may include a first water outlet 251. The first water outlet 251 may be located at any suitable position on the first cavity 210. The water inlet 240 may be located at any suitable location on the second receptacle 220.

The pure water outlet of the reverse osmosis filter element 130 can be respectively communicated to the water inlet 240 of the water storage device 200 and the water outlet of the water purifier 100. The first solenoid valve 410 can be connected between the pure water outlet of the reverse osmosis filter element 130 and the water outlet of the water purifier 100. The first water outlet 251 of the water storage device 200 may be communicated to a water inlet of the water pump 140. The outlet of the water pump 140 may be connected to the water outlet of the water purifier 100. When in use, the water outlet end of the water purifier 100 can be connected to various water intake devices 300, such as a faucet and a pipeline machine.

When the water purifier 100 is in standby, water with higher TDS is stored in the reverse osmosis filter element 130. When the user takes water next time, water pump 140 may preferentially pump the water in first cavity 210 to the water outlet end of water purifier 100 for use by the user. Because the water in the first cavity 210 is the pure water prepared in advance after the last user stops taking water, and the part of the pure water is not the first section of water prepared by the reverse osmosis filter element 130 after the water purifier 100 is standby for a long time, the TDS is low, and the use requirement of the user is met. When the user starts to take water, the booster pump 120 starts to operate, thereby replenishing the water storage device 200 with water. The pure water prepared by the reverse osmosis filter element 130 enters the second cavity 220 of the water storage device 200 through the pure water outlet of the reverse osmosis filter element 130 and the water inlet 240. Thus, even if the TDS of the pure water just prepared by the reverse osmosis filter element 130 is high, the pure water is not directly delivered to the user. Due to the restriction of the restricted flow channel 230, this higher TDS water will slowly enter the first volume 210 to continuously store water into the first volume 210. In the process, the water with higher TDS is mixed with the original pure water in the water storage device 200, and the TDS of the mixed water is effectively reduced, so that the use requirement of a user is met. After a period of time, after all of the high TDS water generated by the standby of the water purifier 100 flows out of the pure water outlet of the reverse osmosis filter element 130, the pure water continuously prepared by the reverse osmosis filter element 130 can gradually decrease the TDS of the water in the water storage device 200, and the TDS of the water in the first and second cavities 210 and 220 finally tend to be equal.

After the long-time standby of purifier, the user begins to get water, and first section water that reverse osmosis filter core 130 prepared the higher TDS all flows into in second appearance chamber 220, first solenoid valve 410 can open. At least a portion of the purified water continuously produced by the reverse osmosis cartridge 130 may be pumped directly to the water outlet of the water purifier 100 for use by a user. Therefore, two paths of water supply at the water outlet end can be realized, and the water outlet flow is increased. It will be appreciated that when the user stops drawing water, the first solenoid valve 410 may be closed to shut off the water circuit.

Therefore, the utility model provides a water storage device 200 has first appearance chamber 210 and second and holds chamber 220, and first appearance chamber 210 supplies water to the play water end of purifier 100, and the second holds the pure water that reverse osmosis filter core 130 was prepared is received to chamber 220, and second appearance chamber 220 communicates to first appearance chamber 210 through current-limiting channel 230, and the higher water of TDS that slowly releases first appearance chamber 210 through current-limiting channel 230 can be effectively diluted, and then reduces the TDS of carrying to user's water.

Therefore, the water purifier 100 adopting the water storage device 200 can effectively prevent a user from receiving water with higher TDS, and ensure the water safety of the user; meanwhile, the water channel of the water storage device 200 is reasonable, the water outlet flow of the water purifier 100 is increased, the water taking time of a user is reduced, and the use experience is good.

Preferably, as shown in fig. 1, the communication port of the restricted flow channel 230 and the first receiving chamber 210 is located at a first side of the first receiving chamber 210, and the first water outlet 251 is located at a second side of the first receiving chamber 210. The first side is opposite the second side. The "sides" include the side walls and bottom wall of first receptacle 210. That is, the first water outlet 251 may be located on a sidewall of the first receiving chamber 210 or a bottom wall of the first receiving chamber 210. When the first water outlet 251 is located on the bottom wall of the first receiving chamber 210, the first water outlet 251 should be disposed near the edge. The communication opening of the restricted flow passage 230 with the first receiving chamber 210 may be located on the side wall of the first receiving chamber 210 or may be located on the bottom wall of the first receiving chamber 210. When the communication port is located on the bottom wall of the first cavity 210, the communication port should be located close to the edge. That is, the communication opening of the flow restricting passage 230 and the first receiving chamber 210 may be far enough from the first water outlet 251. Like this, the higher water of TDS in second appearance chamber 220 flows to the enough distance of first delivery port 251 far away to make the higher water of these TDS can with the original pure water intensive mixing in first appearance chamber 210, ensure that the pump can accord with user operation requirement more to the hydroenergy of the play water end of purifier 100.

As described above, after the reverse osmosis filter element 130 is turned on, the first solenoid valve 410 may be opened after the first section of water prepared by the reverse osmosis filter element 130 flows into the second receiving chamber 220. When the first solenoid valve 410 is open may be controlled by a controller.

In a preferred embodiment, water purifier 100 may further include a controller (not shown). The controller may be electrically connected to the first solenoid valve 410 and the suction pump 140, respectively. The controller may accumulate the intake time period and turn on the suction pump 140 upon receiving an electrical signal to begin taking water. Water pump 140 may preferentially pump water from first chamber 210 to the outlet end of water purifier 100 for use by a user. The controller may open the first solenoid valve 410 when the water intake time of the water purifier 100 is greater than or equal to the preset first water time threshold. The duration threshold may be 60 seconds, 70 seconds, 80 seconds, etc. The duration threshold value can be set according to the performance of the water purifier. Generally speaking, the time that the higher first section water of TDS flows out is comparatively stable in the reverse osmosis filter core 130, consequently through setting up the long threshold value of reasonable preset first section water, can ensure that the higher first section water of TDS flows out entirely in the reverse osmosis filter core 130. At this time, the pure water continuously prepared by the reverse osmosis filter element 130 can be delivered to the water outlet end of the water purifier 100 through the first electromagnetic valve 410. The controller is arranged to compare the water intake time of the water purifier 100 with the preset first-stage water time threshold value, so that the first electromagnetic valve 410 can be opened in time, and the water outlet flow of the water purifier 100 is increased while the water acquired by a user is ensured to meet the standard.

In another preferred embodiment, it is also possible to control when the first solenoid valve 410 is opened by adding a detector and a controller. The detector may include one or both of a flow meter and a level meter. The controller may be electrically connected to the detector, the first solenoid valve 410, and the suction pump 140, respectively. The controller may turn on suction pump 140 upon receiving an electrical signal to begin drawing water. The detector may be used to acquire detection data. The controller may open the first solenoid valve 410 when the detection data reaches a preset threshold.

In embodiments where the detector comprises a flow meter, the flow meter may be disposed between the pure water outlet of the reverse osmosis cartridge 130 and the water inlet 240 of the water storage device 200. The flow meter may be of various types known in the art or that may occur in the future. In this case, the detection data may include the total amount of water. The preset threshold may comprise a preset total water flow threshold. The controller may open the first solenoid valve 410 when the total amount of water passing is greater than or equal to the preset total amount of water passing threshold. The threshold total water amount may be 100 ml, 200 ml, 300 ml, etc. The total water flow threshold value can be set according to the performance of the water purifier. Generally speaking, the higher first section of water of TDS flows out volume comparatively stably in the reverse osmosis filter core 130, consequently through setting up reasonable water total amount threshold value of predetermineeing, can ensure that the higher first section of water of TDS flows out entirely in the reverse osmosis filter core 130. At this time, the pure water continuously prepared by the reverse osmosis filter element 130 can be delivered to the water outlet end of the water purifier 100 through the first electromagnetic valve 410.

In embodiments where the detector comprises a liquid level meter, the liquid level meter may comprise a first liquid level meter disposed on the first volume 210 and/or a second liquid level meter disposed on the second volume 220. The level gauge may be of various types known in the art or that may occur in the future. The first and second level gauges may be the same or different. In this case, the detection data may include a liquid level. The preset threshold may include a preset first-stage water level threshold. According to the performance of the water purifier, the preset first-section water liquid level thresholds of the first liquid level meter and the second liquid level meter can be the same or different. Since the rated flow rate of the booster pump 120 is usually smaller than the rated flow rate of the water pump 140, the liquid level in the water storage device 200 gradually decreases when the booster pump 120 and the water pump 140 are simultaneously operated. The controller may open the first solenoid valve 410 when the liquid level is less than or equal to the preset first-stage water level threshold. The liquid level threshold may be 2/3, 3/4, 3/5, etc. of the upper limit liquid level of the water storage apparatus 200. The liquid level threshold value can be set according to the performance of the water purifier. Generally speaking, the higher first section water of TDS in the reverse osmosis filter core 130 flows out the volume comparatively stable to booster pump 120 and suction pump 140's operating mode is also comparatively stable, consequently through setting up reasonable first section water liquid level threshold of predetermineeing, can ensure that the higher pure water of TDS in the reverse osmosis filter core 130 flows out entirely. At this time, the first section of water continuously prepared by the reverse osmosis filter element 130 can be delivered to the water outlet end of the water purifier 100 through the first electromagnetic valve 410.

The total amount and/or the liquid level of the water can be detected by arranging the detector and the controller, and the total amount and/or the liquid level of the water can be compared with the respective preset threshold values, so that the first electromagnetic valve 410 is opened in time, and the water outlet flow of the water purifier 100 is increased while the water acquired by a user is ensured to meet the standard.

When the user has a small water intake, the first section of water with a high TDS enters the water storage device 200 for multiple times, resulting in a continuous increase in TDS of the water in the water storage device 200.

Therefore, preferably, as shown in fig. 1, the water purifier 100 may further include a return solenoid valve 150. The return solenoid valve 150 may employ various types of solenoid valves known in the art or that may occur in the future. The water inlet of the return solenoid valve 150 may be connected to the water outlet 250 of the water storage device 200. The water inlet of the return solenoid valve 150 may be directly connected to the water outlet 250 of the water storage device 200. Thus, the water purifier 100 has a simple structure. In the illustrated embodiment, the water outlet 250 includes a first water outlet 251 and a second water outlet 252, in which case the return solenoid valve 150 and the suction pump 140 may be connected to the second water outlet 252 and the first water outlet 251, respectively. In other embodiments not shown, the water storage device 200 may have only one water outlet, in which case the return solenoid valve 150 and the suction pump 140 may be connected to the same water outlet. The water outlet 250 of the return solenoid valve 150 may be communicated to a water inlet of the booster pump 120. Alternatively, the water inlet of the return solenoid valve 150 may be indirectly connected to the water outlet 250 of the water storage device 200, for example, in the embodiment shown in fig. 2, the water inlet of the return solenoid valve 150 may be connected to the first water outlet 251 of the water storage device 200 through the suction pump 140, which will be described in detail below.

The solenoid valve 150 can be opened periodically when the water purifier 100 is in standby mode to drain the water in the water storage device 200, and the drained water is sent back to the reverse osmosis filter element 130 again through the booster pump 120 to be filtered and then stored in the water storage device 200, so as to reduce the TDS of the water in the water storage device 200.

Preferably, as shown in fig. 1, the water outlet 250 may further include a second water outlet 252. The second water outlet 252 may be located at any suitable location on the second cavity 220. The return solenoid valve 150 may communicate between the second water outlet port 252 and the water inlet port of the booster pump 120.

Because the first section of water with a higher TDS enters the second cavity 220 through the water inlet 240, the TDS of the water in the second cavity 220 is relatively higher when the first section of water with a higher TDS is not sufficiently mixed with the pure water in the water storage device 200. By providing the second water outlet 252, the booster pump 120 can preferentially pump the water in the second cavity 220 into the reverse osmosis filter element 130, and the TDS of the water in the water storage device 200 decreases faster.

Thus, the booster pump 120 can preferentially pump higher TDS water in the water storage device 200 into the reverse osmosis filter element 130, and the TDS of the water in the water storage device 200 can be reduced faster.

Preferably, as shown in fig. 1, the second water outlet 252 may be located at the bottom of the second cavity 220. The bottom of the second cavity 220 is the lowest position of the water storage device 200. That is, the bottom of the second cavity 220 is the lowest liquid level in the water storage device 200. Therefore, the booster pump 120 can pump out all the water in the water storage device 200 and filter all the water through the reverse osmosis filter element 130, so that all the water in the water storage device 200 is pure water with low TDS, and the water obtained by a user every time can meet the standard. Similarly, in the above embodiment where the first water outlet 251 is directly or indirectly communicated to the water inlet of the backflow solenoid valve 150, the water in the water storage device 200 may be completely discharged through the first water outlet 251 and completely filtered by the reverse osmosis filter element 130, so that the water stored in the water storage device 200 meets the standard.

Preferably, as shown in fig. 1, the water purifier may further include a second solenoid valve 420 and a water pumping solenoid valve 430. The second solenoid valve 420 and the pumping solenoid valve 430 may employ various types of solenoid valves known in the art or that may occur in the future. The second solenoid valve 420 may be communicated between the pure water outlet of the reverse osmosis cartridge 130 and the water inlet 240 of the water storage device 200. The first solenoid valve 410 and the pumping solenoid valve 430 may be connected in parallel. The water pumping solenoid valve 430 can be communicated with the pipeline where the water pumping pump 140 is located, i.e. between the second water outlet 252 and the water outlet end of the water purifier 100. Therefore, the waterway can be more flexibly controlled, and the use experience of a user is improved.

Preferably, water purifier 100 may further include a controller. The controller may be electrically connected to the first solenoid valve 410, the second solenoid valve 420, the return solenoid valve 150, the suction pump 140, and the suction solenoid valve 430, respectively. The water inlet of the return solenoid valve 150 may be directly connected to the water outlet 250 of the water storage device 200. As previously described, return solenoid 150 and suction pump 140 may be connected to the same outlet or to different outlets. The following will be described by taking fig. 1 as an example.

The controller may accumulate the first water intake time period and open the second solenoid valve 420, the water pump 140, and the water pumping solenoid valve 430 upon receiving the electric signal to start water intake.

When a user fetches water, the controller may receive an electrical signal to start fetching water, and then control to turn on the suction pump 140. At this time, the water pump 140 may preferentially pump the water in the first cavity 210 to the water outlet end of the water purifier 100 for the user to use.

The water intake apparatus 300 may include a faucet, 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 intake 300 comprises a mechanical faucet, as shown in FIG. 1, the water purifier 100 may further comprise a check valve 310 and a high pressure switch 320. The electrical signal to stop water intake can be sent by the high-voltage switch 320, and typically will be sent when the high-voltage switch detects that the pressure in the pipeline in which it is located has reached a set pressure. 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 the 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, electric signals for starting water taking and stopping water taking are sent to the controller at the same time, so that the controller can perform subsequent action control on the water purifier.

The above water intake device and the principle of the electric signal sent by the water intake device to stop taking water are well known to those skilled in the art and will not be described in detail.

The controller may open the return solenoid valve 150 and close the second solenoid valve 420, the suction pump 140, and the suction solenoid valve 430 when the first water intake duration is greater than or equal to a first preset water intake duration threshold. At this time, the booster pump 120 continues to operate, and the booster pump 120 pumps the water in the water storage device 200 into the reverse osmosis filter element 130 through the second water outlet 252 of the water storage device 200, and the water is filtered by the reverse osmosis filter element 130 for the user to use. During this time, the water inlet solenoid valve 110 may also be continuously opened while supplying water to the booster pump 120. The control of the first solenoid valve 410 depends on whether the user is getting water, which is opened when the user is still getting water at the moment, and the user closes the first solenoid valve 410 if the user stops getting water.

The controller may close the return solenoid valve 150 when the first water intake duration is greater than or equal to a second preset water intake duration threshold. The second preset water taking time length threshold value is larger than the first preset water taking time length threshold value. In general, the first preset water intake time length threshold is greater than the preset first-stage water intake time length threshold. That is, when the user takes more water in the first chamber 210, which results in a higher TDS of the water in the entire water storage device 200, the backflow solenoid valve 150 may be turned on. The second preset water intake duration threshold may be set to just drain the water in the water storage device 200. At this time, the water in the water storage device 200 can be completely pumped out by the booster pump 120. During this time, the water inlet solenoid valve 110 may also be continuously opened while supplying water to the booster pump 120.

From this, can reduce the TDS of the water in water storage device 200, still carry to the user when avoiding the TDS of remaining water in water storage device 200 to be higher.

The above embodiment controls when the return solenoid 150 is opened and closed by time. In another preferred embodiment, it is also possible to control when the return solenoid 150 is opened and closed by providing a level gauge. In this case, the water purifier may further include a liquid level meter and a controller. The liquid level gauge may include a first liquid level gauge disposed on the first cavity 210 and/or a second liquid level gauge disposed on the second cavity 220. The controller may be electrically connected to the level gauge, the second solenoid valve 420, the return solenoid valve 150, the suction pump 140, and the suction solenoid valve 430, respectively. The controller opens the second solenoid valve 420, the suction pump 140, and the suction solenoid valve 430 upon receiving an electrical signal to start taking water.

The controller opens the return solenoid 150 and closes the second solenoid 420, the suction pump 140 and the suction solenoid 430 when the liquid level detected by the level gauge is below a first preset liquid level threshold.

The controller closes the return solenoid 150 when the level detected by the level gauge is below a second preset level threshold. The second preset liquid level threshold is lower than the first preset liquid level threshold. Typically, the first predetermined level threshold is lower than the predetermined first-stage level threshold. That is, when the user takes more water in the first chamber 210, which results in a higher TDS of the water in the entire water storage device 200, the backflow solenoid valve 150 may be turned on. The second preset liquid level threshold may be zero, that is, the water in the water storage device 200 may be just drained when the liquid level reaches the second preset liquid level threshold.

The principle of this embodiment is substantially the same as that of the above embodiment, and reference may be made to the description of the corresponding parts above, which will not be described again for brevity. Through this kind set up level gauge and controller, can reduce the TDS of the water in water storage device 200, still carry to the user when avoiding the TDS of remaining water in water storage device 200 to be higher.

Fig. 2 shows a schematic water path diagram of a water purifier according to another embodiment of the present invention. Fig. 2 is basically the same as the principle of fig. 1, except for the difference between the position where the water inlet of the return solenoid valve 150 is connected and the position where the water pumping solenoid valve 430 is connected, so for brevity, only the difference between fig. 2 and fig. 1 will be described in detail herein, and for the same components, the description of the corresponding parts herein can be referred to, and the details will not be repeated herein for brevity.

Preferably, as shown in fig. 2, a water inlet of the return solenoid 150 may be connected to a water outlet of the suction pump 140. The water inlet of the water pumping solenoid valve 430 may be communicated to the water outlet of the water pump 140. The pump solenoid valve 430 and the return solenoid valve 150 may be connected in parallel. Thus, the number of the water outlets 250 of the water storage device 200 'can be reduced, and the material of the pipeline in the water purifier 100' can be reduced. In addition, the water pump 140 may assist the booster pump 120 to rapidly discharge the water in the water storage device 200'.

Preferably, as shown in fig. 2, the first water outlet 251 may be located at the bottom of the first receiving chamber 210. The bottom of the first cavity 210 may be the lowest position of the water storage device 200'. That is, the bottom of the first cavity 210 is the lowest liquid level in the water storage device 200'. In this way, the booster pump 120 can pump all the water in the water storage device 200 'out, and all the water is filtered by the reverse osmosis filter element 130, so that all the water in the water storage device 200' is pure water with low TDS, and the water obtained by a user every time can meet the standard.

Preferably, as shown in fig. 2, the return solenoid valve 150 may communicate between the water outlet of the suction pump 140 and the water inlet of the booster pump 120. Water purifier 100' may further include a second solenoid valve 420 and a water pumping solenoid valve 430. The second solenoid valve 420 may be disposed between the pure water outlet of the reverse osmosis cartridge 130 and the water inlet 240 of the water storage device 200'. A water pumping solenoid valve 430 may be in communication between the water outlet of water pump 140 and the water outlet end of water purifier 100'. The first solenoid valve 410 and the pumping solenoid valve 430 may be connected in parallel.

Preferably, water purifier 100' may also include a controller. The controller may be electrically connected to the second solenoid valve 420, the return solenoid valve 150, the suction pump 140, and the suction solenoid valve 430, respectively. The controller may accumulate the second water intake time period and open the second solenoid valve 420, the water pump 140, and the water pumping solenoid valve 430 upon receiving the electrical signal to start water intake.

When a user fetches water, the controller may receive an electrical signal to start fetching water, and then control to turn on the suction pump 140. At this time, the water pump 140 may preferentially pump the water in the first cavity 210 to the water outlet end of the water purifier 100' for the user to use.

The controller may open the return solenoid valve 150, keep opening the suction pump 140, and close the second solenoid valve 420 and the suction solenoid valve 430 when the second water intake duration is greater than or equal to a third preset water intake duration threshold. At this time, the water pump 140 continues to operate, and the water pump 140 pumps the water in the water storage device 200 'to the booster pump 120 through the first water outlet 251 of the water storage device 200', and then the water is filtered by the reverse osmosis filter element 130 for the user to use. During this time, the water inlet solenoid valve 110 may also be continuously opened while supplying water to the booster pump 120.

The controller may close the return solenoid valve 150 and the suction pump 140 when the second water intake duration is greater than or equal to a fourth preset water intake duration threshold. The fourth preset water taking time length threshold value is larger than the third preset water taking time length threshold value. In general, the third preset water intake time length threshold is greater than the preset first-stage water intake time length threshold. That is, when the user takes more water in the first chamber 210, which results in a higher TDS of the water in the entire water storage device 200', the backflow solenoid valve 150 may be turned on. The fourth preset water intake time threshold may be greater than the third preset water intake time threshold. The fourth preset water intake time threshold may be set to just drain the water in the water storage device 200. Preferably, at this time, all of the water in the water storage device 200' can be pumped out by the booster pump 120. During this time, the water inlet solenoid valve 110 may also be continuously opened while supplying water to the booster pump 120.

Therefore, the TDS of the water in the water storage device 200 'can be reduced, and the residual water in the water storage device 200' is prevented from being still conveyed to a user when the TDS is high. In addition, the water pump 140 assists in pumping the water in the water storage device 200' to the front of the booster pump 120, so that the draining speed in the water storage device 200 can be increased.

The above embodiment controls when the return solenoid 150 is opened and closed by time. In another preferred embodiment, it is also possible to control when the return solenoid 150 is opened and closed by providing a level gauge. In this case, the water purifier may further include a liquid level meter and a controller. The liquid level gauge may include a first liquid level gauge disposed on the first cavity 210 and/or a second liquid level gauge disposed on the second cavity 220. The controller may be electrically connected to the level gauge, the second solenoid valve 420, the return solenoid valve 150, the suction pump 140, and the suction solenoid valve 430, respectively. The controller opens the second solenoid valve 420, the suction pump 140, and the suction solenoid valve 430 upon receiving an electrical signal to start taking water.

The controller opens the return solenoid 150 and closes the second solenoid 420, the suction pump 140 and the suction solenoid 430 when the liquid level detected by the level gauge is below a third preset liquid level threshold.

The controller closes the return solenoid 150 when the level detected by the level gauge is below a fourth preset level threshold. The fourth preset liquid level threshold is lower than the third preset liquid level threshold. Typically, the third preset level threshold is lower than the preset first stage level threshold. That is, when the user takes more water in the first chamber 210, which results in a higher TDS of the water in the entire water storage device 200', the backflow solenoid valve 150 may be turned on. The fourth preset liquid level threshold may be zero, that is, the water in the water storage device 200' may be just drained when the liquid level reaches the fourth preset liquid level threshold.

The principle of this embodiment is substantially the same as that of the above embodiment, and reference may be made to the description of the corresponding parts above, which will not be described again for brevity. Through this kind set up level gauge and controller, can reduce the TDS of the water in water storage device 200', still carry to the user when avoiding the TDS of remaining water in water storage device 200' to be higher. In addition, the water pump 140 assists in pumping the water in the water storage device 200 'to the front of the booster pump 120, so that the speed of draining the water in the water storage device 200' can be increased.

Each time the user stops taking water, the water needs to be stored in the water storage device 200. For the embodiment shown in fig. 1-2, the water purifier may further include a liquid level meter and a controller. The liquid level meters include a first liquid level meter disposed on the first housing 210 and/or a second liquid level meter disposed on the second housing 220. The controller may be electrically connected to the first solenoid valve 410, the second solenoid valve 420, and the liquid level gauge, respectively. The controller may close the first solenoid valve 410 and open the second solenoid valve 420 to store water into the water storage device upon receiving an electrical signal to stop taking water. The controller stops storing water when the liquid level detected by the liquid level meter is higher than or equal to the upper liquid level limit. By the arrangement, the water quantity in the water storage device can be ensured to be sufficient before the next water taking, and the water storage device is ready for the next water taking.

Preferably, as shown in fig. 1, the water storage device 200 may further include an overflow preventing passage 260. The top of the first receiving chamber 210 and the top of the second receiving chamber 220 may communicate with each other through the water flood prevention passage 260. By providing the water overflow preventing passage 260, when the liquid level of the second receiving chamber 220 is too high due to the flow restriction of the flow restricting passage 230, water may flow into the first receiving chamber 210 through the water overflow preventing passage 260, preventing the water storage device 200 from overflowing. Moreover, by reasonably setting the volume of the second cavity 220, when the second cavity 220 is filled, the reverse osmosis filter element 130 has drained the water with higher TDS in the first section, so that the pure water with TDS meeting the standard prepared by the reverse osmosis filter element 130 can directly flow into the first cavity 210 through the anti-overflow water channel 260.

Preferably, as shown in fig. 1, the water storage device 200 may include a water tank 270 and a barrier 280. A baffle 280 may be disposed within the water tank 270. The barrier 280 may be a baffle. Barrier 280 may separate the space within water tank 270 into first volume 210 and second volume 220. Optionally, the baffle 280 may be spaced from the bottom wall of the water tank 270 to form the restricted flow passage 230. Alternatively, the barrier 280 may be spaced apart from the top wall of the water tank 270 to form the water flood prevention passage 260. Thus, the water storage device 200 has a simple structure and low production cost.

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 (15)

1. A water purifier comprises a booster pump (120), a reverse osmosis filter element (130) and a water pump (140), wherein a water outlet of the booster pump is communicated with a raw water inlet of the reverse osmosis filter element, and the water purifier is characterized by further comprising a water storage device and a first electromagnetic valve (410),

the water storage device comprises a first cavity (210), a second cavity (220) and a flow limiting channel (230), the lower part of the first cavity is communicated with the lower part of the second cavity through the flow limiting channel, the water storage device is provided with a water inlet (240) and a water outlet (250), the water outlet of the water storage device comprises a first water outlet (251), the first water outlet is positioned on the first cavity, the water inlet is positioned on the second cavity,

the water purifier comprises a water storage device, a reverse osmosis filter element, a first electromagnetic valve, a water pump and a water outlet pump, wherein a pure water outlet of the reverse osmosis filter element is communicated to a water inlet of the water storage device and a water outlet end of the water purifier respectively, the first electromagnetic valve is communicated between the pure water outlet of the reverse osmosis filter element and the water outlet end of the water purifier, the first water outlet is communicated to a water inlet of the water pump, and a water outlet of the.

2. The water purifier according to claim 1, further comprising a controller electrically connected to the first solenoid valve (410) and the water pump (140), respectively, wherein the controller accumulates a water intake time period and turns on the water pump when receiving an electric signal to start water intake, and wherein the controller turns on the first solenoid valve when the water intake time period is greater than or equal to a preset initial water period threshold value.

3. The water purification machine according to claim 1, further comprising a detector and a controller electrically connected to the detector, the first solenoid valve (410) and the water pump (140), respectively, the controller turning on the water pump upon receiving an electrical signal to start taking water, the detector being configured to obtain detection data, the controller turning on the first solenoid valve upon the detection data reaching a preset threshold, the detector comprising one or both of:

a flow meter disposed between the pure water outlet of the reverse osmosis filter element (130) and the water inlet (240) of the water storage device, in which case the detection data includes a total amount of water passing, the preset threshold includes a preset total amount of water passing threshold, and the controller opens the first solenoid valve when the total amount of water passing is greater than or equal to the preset total amount of water passing threshold;

the liquid level meter comprises a first liquid level meter arranged on the first cavity (210) and/or a second liquid level meter arranged on the second cavity (220), in this case, the detection data comprise a liquid level, the preset threshold comprises a preset first-section water liquid level threshold, and the controller opens the first electromagnetic valve (410) when the liquid level is lower than or equal to the preset first-section water liquid level threshold.

4. The water purifier according to claim 1, further comprising a return solenoid valve (150) in communication between a water outlet (250) of the water storage means and a water inlet of the booster pump (120).

5. The water purification machine according to claim 4, further comprising a second solenoid valve (420) and a water pumping solenoid valve (430), wherein said second solenoid valve is connected between the pure water outlet of said reverse osmosis filter element (130) and the water inlet of said water storage device, said first solenoid valve (410) and said second solenoid valve are connected in parallel, and said water pumping solenoid valve is located on the pipeline where said water pumping pump (140) is located.

6. The water purifier according to claim 5, wherein a water inlet of said return solenoid valve (150) is directly connected to a water outlet (250) of said water storage means, said water purifier further comprising a controller electrically connected to said second solenoid valve (420), said return solenoid valve (150), said suction pump (140) and said suction solenoid valve (430), respectively, wherein,

when the controller receives an electric signal for starting to take water, accumulating a first water taking time length and opening the second electromagnetic valve, the water suction pump and the water suction electromagnetic valve;

when the first water taking time length is greater than or equal to a first preset water taking time length threshold value, the controller opens the backflow electromagnetic valve and closes the second electromagnetic valve, the water suction pump and the water suction electromagnetic valve;

the controller closes the backflow electromagnetic valve when the first water taking time length is greater than or equal to a second preset water taking time length threshold value, and the second preset water taking time length threshold value is greater than the first preset water taking time length threshold value.

7. The water purification machine according to claim 5, wherein the water inlet of the backflow solenoid valve (150) is directly connected to the water outlet (250) of the water storage device, the water purification machine further comprises a liquid level meter comprising a first liquid level meter disposed on the first chamber (210) and/or a second liquid level meter disposed on the second chamber (220), and a controller electrically connected to the liquid level meter, the second solenoid valve (420), the backflow solenoid valve, the water pump (140) and the water pumping solenoid valve (430), respectively, wherein,

when the controller receives an electric signal for starting to take water, the second electromagnetic valve, the water suction pump and the water suction electromagnetic valve are opened;

when the liquid level detected by the liquid level meter is lower than a first preset liquid level threshold value, the controller opens the backflow electromagnetic valve and closes the second electromagnetic valve, the water suction pump and the water suction electromagnetic valve;

and when the liquid level detected by the liquid level meter is lower than a second preset liquid level threshold value, the controller closes the backflow electromagnetic valve and keeps opening the first electromagnetic valve, and the second preset liquid level threshold value is lower than the first preset liquid level threshold value.

8. The water purifier as recited in claim 5, wherein the water outlet of the water storage device further comprises a second water outlet (252), and the return solenoid valve (150) is communicated between the second water outlet and the water inlet of the booster pump (120).

9. The water purification machine according to claim 5, wherein the water inlet of the water pumping solenoid valve (430) is connected to the water outlet of the water pumping pump (140), the water inlet of the return solenoid valve (150) is connected to the water outlet of the water pumping pump, and the water pumping solenoid valve and the return solenoid valve are connected in parallel.

10. The water purification machine according to claim 9, further comprising a controller electrically connected to said second solenoid valve (420), said return solenoid valve (150), said suction pump (140) and said suction solenoid valve (430), respectively, wherein

When the controller receives an electric signal for starting to take water, accumulating a second water taking time length and opening the second electromagnetic valve, the water suction pump and the water suction electromagnetic valve;

when the second water taking time length is greater than or equal to a third preset water taking time length threshold value, the controller opens the backflow electromagnetic valve, keeps opening the water suction pump and closes the second electromagnetic valve and the water suction electromagnetic valve;

the controller closes the backflow electromagnetic valve and the water suction pump when the second water taking time length is greater than or equal to a fourth preset water taking time length threshold value, and the fourth preset water taking time length threshold value is greater than a third preset water taking time length threshold value.

11. The water purification machine according to claim 9, further comprising a liquid level meter comprising a first liquid level meter provided on said first volume (210) and/or a second liquid level meter provided on said second volume (220), and a controller electrically connected to said second solenoid valve (420), said return solenoid valve (150), said water pump (140), said water pumping solenoid valve (430) and said liquid level meter, respectively, wherein,

when the controller receives an electric signal for starting to take water, the second electromagnetic valve, the water suction pump and the water suction electromagnetic valve are opened;

when the liquid level detected by the liquid level meter is lower than a third preset liquid level threshold value, the controller opens the backflow electromagnetic valve, keeps opening the water suction pump and closes the second electromagnetic valve and the water suction electromagnetic valve;

the controller closes the backflow electromagnetic valve and the water suction pump when the liquid level detected by the liquid level meter is lower than a fourth preset liquid level threshold value, and the fourth preset liquid level threshold value is lower than a third preset liquid level threshold value.

12. The water purification machine according to claim 5, further comprising a liquid level meter comprising a first liquid level meter disposed on the first chamber (210) and/or a second liquid level meter disposed on the second chamber (220), and a controller electrically connected to the first solenoid valve (410), the second solenoid valve (420) and the liquid level meter, respectively, wherein

When the controller receives an electric signal for stopping water taking, the first electromagnetic valve is closed and the second electromagnetic valve is opened so as to store water into the water storage device;

the controller stops water storage when the liquid level detected by the liquid level meter is higher than or equal to the upper liquid level limit.

13. The water purification machine according to claim 1, wherein the communication opening of said restricted flow channel (230) with said first chamber (210) is located at a first side of said first chamber, and said first water outlet (251) is located at a second side of said first chamber, said first side being opposite to said second side.

14. The water purification machine according to claim 1, wherein the water storage means further comprises an overflow preventing passage (260) through which the top of the first chamber (210) and the top of the second chamber (220) communicate.

15. The water purification machine according to claim 14, wherein the water storage means comprises a tank (270) and a barrier (280) arranged within the tank to separate a space within the tank into the first volume (210) and the second volume (220), wherein

The baffle is spaced from a bottom wall of the tank to form the restricted flow passage (230); or/and

the blocking member is spaced apart from the top wall of the water tank to form the water flood prevention passage (260).

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