CN218811214U

CN218811214U - Water purification system

Info

Publication number: CN218811214U
Application number: CN202223108486.XU
Authority: CN
Inventors: 杨浩
Original assignee: Zhejiang Supor Kitchen and Bathroom Electrical Appliance Co Ltd
Current assignee: Zhejiang Supor Kitchen and Bathroom Electrical Appliance Co Ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-04-07
Anticipated expiration: 2032-11-23

Abstract

The utility model provides a water purification system. The water purification system is provided with a water inlet end and a water outlet end and also comprises a variable frequency pump, and a water inlet of the variable frequency pump is connected with the water inlet end; the first reverse osmosis filter element is arranged on the first passage, a water inlet of the first passage is connected with a water outlet of the variable frequency pump, and a water outlet of the first passage is connected with a water outlet end; the second reverse osmosis filter element is arranged on the second passage, a water inlet of the second passage is connected with a water outlet of the variable frequency pump, and a water outlet of the second passage is connected with a water outlet end; and the valve assembly is arranged on the first passage and the second passage and used for alternatively communicating the first passage and the second passage, wherein the flow rate of the first reverse osmosis filter element is less than that of the second reverse osmosis filter element. The water purification system can be switched to the reverse osmosis filter element matched with the flow to work according to the water taking requirement of a user, and the raw water with the corresponding flow is input by the variable frequency pump.

Description

Water purification system

Technical Field

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

Background

People have higher and higher requirements on the water quality of production and domestic water, and therefore the water purifier becomes an indispensable part of the lives of many people.

Many of the water purification systems utilize reverse osmosis filters to filter raw water. The reverse osmosis membrane that the reverse osmosis filter core included is a semipermeable membrane that has selectivity to the material of permeating, exert pressure to the raw water of membrane one side, when pressure exceeded its osmotic pressure, the raw water can be done reverse osmosis against the direction of natural infiltration, the pure water can permeate reverse osmosis membrane, and impurity such as inorganic ion, colloidal substance, macromolecule solute and heavy metal in the raw water can't permeate reverse osmosis membrane to make the pure water that can permeate and the dense water that can't permeate distinguish and come, obtain the pure water, namely the water purification at reverse osmosis membrane's low pressure side.

However, in the process of obtaining pure water by actually using the reverse osmosis filter element, if the through flow of the reverse osmosis filter element is small, the water taking requirement of a user for high-flow pure water cannot be met; and if the through flow of reverse osmosis filter core is great, when the user only need low discharge pure water, because the whole device flow is less, can reduce the filter capacity of reverse osmosis filter core, make the TDS (total solids dissolved) value in the pure water that generates higher.

SUMMERY OF THE UTILITY MODEL

In order to at least partially solve the problems of the prior art, according to one aspect of the present invention, a filter element assembly is provided.

The utility model provides a water purification system. The water purification system is provided with a water inlet end and a water outlet end and also comprises a variable frequency pump, and a water inlet of the variable frequency pump is connected with the water inlet end; the first reverse osmosis filter element is arranged on the first passage, a water inlet of the first passage is connected with a water outlet of the variable frequency pump, and a water outlet of the first passage is connected with a water outlet end; the second reverse osmosis filter element is arranged on the second passage, a water inlet of the second passage is connected with a water outlet of the variable frequency pump, and a water outlet of the second passage is connected with a water outlet end; and the valve assembly is arranged on the first passage and the second passage and used for alternatively communicating the first passage and the second passage, wherein the flow rate of the first reverse osmosis filter element is less than that of the second reverse osmosis filter element. The water purification system can be switched to the reverse osmosis filter element matched with the flow to work according to the water taking requirement of a user, and the raw water with the corresponding flow is input by the variable frequency pump. Therefore, the use requirements of each component in the water purification system on the flow can be met, and the reverse osmosis filter element can play a normal filtering role under the corresponding flow. In addition, can also avoid causing the damage to the filter core under the unmatched condition of the through-flow of flow and reverse osmosis filter core.

Illustratively, the water outlet end comprises a water taking end and a water discharging end, the first passage comprises a first raw water pipeline, a first pure water pipeline and a first concentrated water pipeline, the first raw water pipeline is connected between the water outlet of the variable frequency pump and the first raw water end of the first reverse osmosis filter element, the first pure water pipeline is connected between the first pure water end and the water taking end of the first reverse osmosis filter element, and the first concentrated water pipeline is connected between the first concentrated water end and the water discharging end of the first reverse osmosis filter element; the second passage comprises a second raw water pipeline, a second pure water pipeline and a second concentrated water pipeline, the second raw water pipeline is connected between the water outlet of the variable frequency pump and a second raw water end of the second reverse osmosis filter element, the second pure water pipeline is connected between a second pure water end and a water taking end of the second reverse osmosis filter element, and the second concentrated water pipeline is connected between a second concentrated water end and a water discharging end of the second reverse osmosis filter element; the valve component comprises a first water outlet valve arranged on the first pure water pipeline, a first concentrated water valve arranged on the first concentrated water pipeline, a second water outlet valve arranged on the second pure water pipeline and a second concentrated water valve arranged on the second concentrated water pipeline. The embodiment of the utility model provides a water purification system, through setting up this valve module, the user can be controlled the rivers of the delivery port of each pipeline in each passageway respectively. The user not only can control the behavior of each reverse osmosis filter core respectively, can also be to the regulation of first dense water valve and second dense water valve, wash the operation to corresponding reverse osmosis filter core. Furthermore, a user can control the wastewater ratio of the reverse osmosis filter elements on the corresponding passages by adjusting the opening degrees of the first concentrated water valve and the second concentrated water valve, so that the plurality of reverse osmosis filter elements can be independently adjusted. From this, have the water purification system of this setting, the water route is adjusted more in a flexible way, and the water route operation mode is also more various, can be suitable for multiple occasion.

Illustratively, the water purification system further includes a controller for controlling the variable frequency pump to operate at a first output flow rate corresponding to a through flow rate of the first reverse osmosis cartridge when the valve assembly renders the first passage conductive and at a second output flow rate corresponding to a through flow rate of the second reverse osmosis cartridge when the valve assembly renders the second passage conductive. Through setting up the controller, not only can adjust water purification system's rivers trend automatically, can also adjust out the water flow according to the logical flow of the reverse osmosis filter core on each route, make the logical flow phase-match of the play water flow on each route rather than last reverse osmosis filter core to make reverse osmosis filter core can reach best work effect, and this setting can also improve water purification system's degree of automation.

Illustratively, the water purification system further comprises a heating device, and the heating device is arranged on the first pure water pipeline. Because the through flow of first reverse osmosis filter core is less, satisfying under the prerequisite of the less discharge water flow that heating device can bear, still can make first reverse osmosis filter core have normal filter capacity, improve user's use and experience.

Illustratively, the heating device is disposed downstream of the first outlet valve. Because the hot water easily produces the incrustation scale, and the sealing member is damaged easily to hot water, so set up heating device in the low reaches of first outlet valve, can reduce the probability of scale deposit in the first outlet valve, in addition, also can protect the sealing member of first outlet valve, avoid appearing the condition of leaking because of the sealing member damages.

Illustratively, the first and second reverse osmosis cartridges are integrated into a composite cartridge. The reverse osmosis filter core that leads to flow with two kinds of differences uses compositely, and the reverse osmosis filter core filter effect that leads to flow great when can avoiding the water intaking flow is not good, perhaps leads to the problem that the reverse osmosis filter core that flow is less when the water intaking flow is big restricts the water flow to can satisfy the user to the demand of different pure water intaking flow, compare in addition and set up two independent filter element subassemblies, the wholeness is strong, and the integrated level is high, simple structure, easily installation.

Illustratively, the composite filter element comprises a filter bottle, the filter bottle is provided with a raw water port, a first pure water port, a first concentrated water port, a second pure water port and a second concentrated water port, the first reverse osmosis filter element and the second reverse osmosis filter element are both accommodated in the filter bottle, the first raw water end is connected with the raw water port, the first pure water end is connected with the first pure water port, and the first concentrated water end is connected with the first concentrated water port; and the second raw water end is connected with the raw water port, the second pure water end is connected with the second pure water port, and the second concentrated water end is connected with the second concentrated water port. The composite filter element with the arrangement has the advantages that the filter flask can provide better support for the first reverse osmosis filter element and the second reverse osmosis filter element, the internal structures of the first reverse osmosis filter element and the second reverse osmosis filter element are protected, the whole device structure is more stable, and each water port is arranged on the filter flask, so that the filter flask is convenient to install.

Illustratively, the first reverse osmosis filter element comprises a first central tube and a first filter membrane, wherein a first through hole is formed in the tube wall of the first central tube, the first filter membrane surrounds the first central tube, a first raw water end and a first concentrated water end are oppositely arranged along the axis of the first central tube, a first pure water end faces the tube wall of the first central tube and is communicated with the first through hole, and the first central tube is communicated with the first pure water port; the second reverse osmosis filter core includes that the pipe wall is provided with the second center tube of second through-hole and surrounds the second filter membrane on the second center tube, and the relative setting along the axis of second center tube of second raw water end and second dense water end, the second pure water tip towards the pipe wall of second center tube and with second through-hole intercommunication, second center tube and second pure water mouth intercommunication, wherein first center tube and second center tube coaxial line, and the second center tube is worn to locate by first center tube. The arrangement of the first central tube and the second central tube can also ensure that the flow of the pure water in the filter flask is not interfered by other factors, thereby avoiding the situation that the pure water obtained by filtering is subjected to secondary pollution. The setting of first through-hole and second through-hole prevents to take place the backward flow after pure water gets into first center tube and second center tube, has strengthened the stability that pure water flows out. The arrangement of the first filter membrane and the second filter membrane enhances the filtering effect and enables the water quality of the pure water to be better.

Illustratively, the first filter membrane and the second filter membrane are sequentially arranged along the axis, the second filter membrane is arranged between the first filter membrane and the water passing end of the filter bottle, and the raw water port, the first pure water port, the first concentrated water port, the second pure water port and the second concentrated water port are all arranged on the water passing end. Like this, first filter membrane and second filter membrane can be parallel connection's state, and each filter membrane can not influenced each other by autonomous working, both can realize alone going out water, also can realize two filter membranes and go out water simultaneously, make things convenient for this filter element group spare to use in multiple occasion. The tangent plane of first filter membrane, second filter membrane, former mouth of a river, first pure mouth of a river, first dense mouth of a river, second pure mouth of a river and the dense mouth of a river of second all can be the form of ring, combines together to save space more, also does benefit to user's water intaking operation.

Illustratively, the first filter membrane is disposed within the second central tube. Therefore, the filtering effect can be enhanced, and the quality of the pure water flowing out from the second pure water port is better.

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 water circuit diagram of an exemplary embodiment of a water purification system provided by the present invention;

fig. 2 is a water circuit diagram of an exemplary embodiment of another water purification system provided by the present invention;

FIG. 3 is a cross-sectional view of an exemplary embodiment of the filter element assembly shown in FIG. 2; and

FIG. 4 is a cross-sectional view of another exemplary embodiment of the filter element assembly depicted in FIG. 2.

Wherein the figures include the following reference numerals:

10. a filter element assembly; 100. a first reverse osmosis filter element; 110. a first raw water end; 120. a first pure water end; 130. a first concentrate end; 140. a first center tube; 150. a first through hole; 160. a first filter membrane; 170. a first cartridge end cap; 171. a first end cap; 172. a first bottom tube; 173. a first bottom hole;

200. a second reverse osmosis filter element; 210. a second raw water end; 220. a second pure water end; 230. a second concentrate end; 240. a second center tube; 250. a second through hole; 260. a second filter membrane; 270. a second cartridge end cap; 271. a second end cap; 272. a second bottom tube; 273. a second bottom hole;

300. a filter flask; 310. a raw water port; 320. a first purified water port; 330. a first concentrate port; 340. a second purified water port; 350. a second concentrate port;

20. a water purification system; 21. a water inlet end; 22. a water taking end; 23. a drainage end; 410. a variable frequency pump; 420. a heating device; 500. a valve assembly; 510. a first water outlet valve; 520. a first concentrate valve; 530. a second water outlet valve; 540. a second concentrate valve; 610. a first path; 611. a first raw water pipeline; 612. a first pure water line; 613. a first concentrate line; 620. a second path; 621. a second raw water pipeline; 622. a second pure water line; 623. a second concentrated water pipeline.

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.

As shown in fig. 1-2, the present invention provides a water purification system 20. The water purification system 20 may have a water inlet end 21 and a water outlet end. The water inlet end 21 may be used to connect to a municipal water pipe or tank or the like. The water outlet end may be used to discharge purified water and/or concentrated water produced by the water purification system 20.

The water purification system 20 may also include a variable frequency pump 410, a first reverse osmosis cartridge 100, a second reverse osmosis cartridge 200, and a valve assembly 500.

The water inlet of the variable frequency pump 410 can be connected with the water inlet end 21. The variable frequency pump 410 may comprise any variable frequency pump now known or later developed. The variable frequency pump 410 is used for controlling the water outlet flow rate.

A first reverse osmosis cartridge 100 may be disposed on the first passage 610. The water inlet of the first passage 610 can be connected with the water outlet of the variable frequency pump 410. The outlet of the first passage 610 may be connected to the outlet end. The first passage 610 may include one or more conduits that communicate between the outlet and the outlet end of the variable frequency pump 410. The first reverse osmosis filter element 100 can filter raw water entering the first passage 610, and the generated pure water and concentrated water can flow to the water outlet end.

A second reverse osmosis cartridge 200 may be disposed on the second pathway 620. The water inlet of the second passage 620 can be connected with the water outlet of the variable frequency pump 410. The outlet of the second channel 620 may be connected to the outlet end. The second passage 620 may include one or more conduits that communicate between the outlet and the outlet end of the variable frequency pump 410. The second reverse osmosis filter element 200 may filter the raw water entering the second passage 620, and the generated pure water and concentrated water may flow to the water outlet end. The structure of the first via 610 and the structure of the second via 620 may be the same or different. In fig. 1, the portions enclosed by the dotted lines are a first via 610 and a second via 620. The embodiment shown in fig. 1 may further include a pre-filter element, a water inlet solenoid valve, etc., the functions and functions of which are well known to those skilled in the art and will not be described in detail.

Valve assembly 500 may be disposed on first passage 610 and second passage 620. Valve assembly 500 may be used to alternatively communicate first passage 610 and second passage 620. In some embodiments, as shown in fig. 1, valve assembly 500 may include a three-way valve disposed in the inlet of first passage 610 and second passage 620. The three-way valve may alternatively communicate the outlet of the variable frequency pump 410 with the first passage 610 or the second passage 620. In other embodiments, as shown in FIG. 2, valve assembly 500 may also be a valve disposed on first and

second passages

610 and 620, respectively. The first passage 610 and the second passage 620 may be alternatively communicated by a valve on a controller through the first passage 610 and the second passage 620. The valve assembly 500 may have various forms, and is not particularly limited, and the positions of the valve assembly 500 disposed on the first and

second passages

610 and 620 may be various as long as the first and

second passages

610 and 620 can be alternatively communicated.

Wherein the flow rate of the first reverse osmosis filter element 100 is less than the flow rate of the second reverse osmosis filter element 200. The inventor finds that when the water intake flow of the user to the pure water is not matched with the through flow of the reverse osmosis filter element, the reverse osmosis filter element cannot exert the maximum filtering function, and the filter element can be damaged or the filtering capacity of the reverse osmosis filter element can be reduced. In some embodiments, a reverse osmosis filter cartridge is provided in the water purification system 20 to meet the requirement of high flux water outlet, and a heating device 420 may be provided downstream of the reverse osmosis filter cartridge to allow access to hot water. The heating device 420 may heat the pure water generated from the reverse osmosis cartridge for use by a user. But is limited by the power of the heating device, and the flow demand of the heating device is smaller than the water outlet flow of the reverse osmosis filter element. In order to match with the heating device, the amount of raw water entering the reverse osmosis filter element is correspondingly reduced. When raw water with lower flow passes through the reverse osmosis filter element with large flux, the filtering capacity of the reverse osmosis filter element on the raw water is reduced due to the fact that the inflow rate is not matched with the through flow rate of the reverse osmosis filter element with large flux, and the TDS value in the pure water generated by filtering is relatively high, so that the requirement of a user cannot be met. Of course, the usage scenario of the water purification system is not limited to the reverse osmosis filter element being connected with the heating device. In other embodiments, in order to cooperate with downstream small-flux equipment, a reverse osmosis filter element capable of meeting the requirement of small-flux water outlet is arranged in the water purification system, but when the required flow of a user for pure water is large, the small-flux reverse osmosis filter element cannot meet the requirement of water outlet flow, and the use experience of the user is influenced.

The utility model provides a water purification system 20, the user can switch on first route 610 and second route 620 alternative through valve module 500 according to the user demand to filter the raw water through first reverse osmosis filter core 100 and second reverse osmosis filter core 200 respectively. When a user needs a small flow of pure water, the first passage 610 may be connected, and the inverter pump 410 may be controlled to output a small flow of raw water adapted to the first reverse osmosis filter cartridge 100. When a user needs pure water with a large flow rate, the second passage 620 can be communicated, and the variable frequency pump 410 is controlled to output raw water with a large flow rate matched with the second reverse osmosis filter element 200.

Therefore, the water purification system 20 can be switched to the reverse osmosis filter element with the flow rate adapted to the water intake demand of the user, and the variable frequency pump 410 is used to input the raw water with the corresponding flow rate. Therefore, the use requirements of each component in the water purification system 20 on the flow rate can be met, and the reverse osmosis filter element can play a normal filtering role under the corresponding flow rate. In addition, can also avoid causing the damage to the filter core under the unmatched condition of the through-flow of flow and reverse osmosis filter core.

Illustratively, as shown in FIG. 2, the outlet end may include a water intake end 22 and a water discharge end 23.

The first passage 610 may include a first raw water line 611, a first pure water line 612, and a first concentrate water line 613. A first raw water line 611 may be connected between the outlet of the variable frequency pump 410 and the first raw water end 110 of the first reverse osmosis cartridge 100. A first plain water line 612 may be connected between the first plain water end 120 and the water intake end 22 of the first reverse osmosis cartridge 100. A first concentrate line 613 can be connected between the first concentrate end 130 and the drain end 23 of the first reverse osmosis cartridge 100.

The second passage 620 may include a second raw water line 621, a second pure water line 622, and a second concentrated water line 623. A second raw water line 621 may be connected between the outlet of the variable frequency pump 410 and the second raw water end 210 of the second reverse osmosis cartridge 200. A second plain water line 622 may be connected between the second plain water end 220 and the water intake end 22 of the second reverse osmosis cartridge 200. A second concentrate line 623 may be connected between the second concentrate end 230 and the drain end 23 of the second reverse osmosis cartridge 200.

The valve assembly 500 may include a first outlet valve 510, a first concentrate valve 520, a second outlet valve 530, and a second concentrate valve 540. The first outlet valve 510 may be disposed on a first plain water line 612. A first concentrate valve 520 may be provided on the first concentrate line 613. A second outlet valve 530 may be provided on the second plain water line 622. A second concentrate valve 540 may be disposed on the second concentrate line 623.

The embodiment of the utility model provides a water purification system 20, through setting up this valve module 500, the user can be controlled the rivers of the delivery port of each pipeline in each passageway respectively. The user can not only control the working conditions of the reverse osmosis filter elements respectively, but also can adjust the first concentrate valve 520 and the second concentrate valve 540 to flush the corresponding reverse osmosis filter elements. Further, the user can also control the wastewater ratio of the reverse osmosis filter elements on the corresponding passages by adjusting the opening degrees of the first concentrate valve 520 and the second concentrate valve 540, so as to individually adjust and calibrate the plurality of reverse osmosis filter elements. From this, have the water purification system of this setting, the water route is adjusted more in a flexible way, and the water route operation mode is also more various, can be suitable for multiple occasion.

Illustratively, the water purification system 20 may also include a controller. The controller may be configured to control the variable frequency pump 410 to operate at a first output flow rate corresponding to the flow rate of the first reverse osmosis cartridge 100 when the valve assembly 500 is rendering the first passage 610 conductive and to control the variable frequency pump 410 to operate at a second output flow rate corresponding to the flow rate of the second reverse osmosis cartridge 200 when the valve assembly 500 is rendering the second passage 620 conductive. Through setting up the controller, not only can adjust water purification system 20's rivers trend automatically, can also adjust out the water flow according to the logical flow of the reverse osmosis filter core on each route, make the logical flow phase-match of the play water flow on each route and the logical flow of reverse osmosis filter core on it to make the reverse osmosis filter core can reach best work effect, and this setting can also improve water purification system 20's degree of automation.

The controller can be built by adopting electronic elements such as a timer, a comparator, a register, a digital logic circuit and the like, or can be realized by adopting processor chips such as a singlechip, a microprocessor, a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), an Application Specific Integrated Circuit (ASIC) and the like and peripheral circuits thereof.

Illustratively, the water purification system 20 may further include a heating device 420. The heating device 420 may be provided on the first pure water line 612. When a user needs to receive hot water, the water purification system 20 may enter the first working mode, at this time, the first passage 610 is connected, the first reverse osmosis filter element 100 performs filtration, and the water outlet flow of the variable frequency pump 410 is adapted to the flow of the first reverse osmosis filter element 100 and may also satisfy the heating power of the heating device 420. Because the through flow of the first reverse osmosis filter element 100 is small, on the premise of meeting the small water outlet flow which can be borne by the heating device 420, the first reverse osmosis filter element 100 can have normal filtering capacity, and the use experience of a user is improved.

Illustratively, the heating device 420 may be disposed downstream of the first outlet valve 510. Since scale is easily generated in the hot water and the hot water easily damages the sealing member, the heating device 420 is disposed at the downstream of the first outlet valve 510, so as to reduce the probability of scaling in the first outlet valve 510, and in addition, protect the sealing member of the first outlet valve 510, and avoid water leakage caused by the sealing member damage.

Illustratively, the first reverse osmosis cartridge 100 and the second reverse osmosis cartridge 200 may be integrated into a composite cartridge, as shown in fig. 3-4. In fig. 3, a first reverse osmosis cartridge 100 and a second reverse osmosis cartridge 200 are connected in parallel. In fig. 4, a first reverse osmosis cartridge 100 and a second reverse osmosis cartridge 200 are connected in series. A user may control the flow through the various lines by controlling valve assembly 500. Like this with the reverse osmosis filter core combined use of two kinds of different through-flow, the reverse osmosis filter core filter effect that can avoid the water intaking flow when hour through-flow is great is not good, perhaps the problem that the reverse osmosis filter core that the through-flow is less when the water intaking flow is big restricts the water outflow to can satisfy the user to the demand of different pure water intaking flow, compare in addition and set up two independent filter element subassemblies, the wholeness is strong, and the integrated level is high, simple structure, easily installation.

Illustratively, the composite filter element may include a filter flask 300. The filter flask 300 may have a raw water port 310, a first pure water port 320, a first concentrate port 330, a second pure water port 340, and a second concentrate port 350. The first reverse osmosis cartridge 100 and the second reverse osmosis cartridge 200 may each be housed within a filter bottle 300. The filter flask 300 as a carrier may have various shapes, and is not particularly limited. The first raw water end 110 may be connected to the raw water port 310. The first plain water end 120 may be connected to a first plain water port 320. The first concentrate end 130 may be connected to a first concentrate port 330. The second raw water end 210 may be connected to a raw water port 310. The second plain water end 220 may be connected to a second plain water port 340. The second concentrate end 230 may be connected to a second concentrate port 350. Raw water may flow into the filter flask 300 through the raw water port 310. Pure water generated by filtering the raw water may flow out of the first pure water port 320 and/or the second pure water port 340. The concentrate generated without being filtered can flow out from the first concentrate port 330 and/or the second concentrate port 350. The raw nozzle 310, the first concentrate nozzle 320, the first concentrate nozzle 330, the second concentrate nozzle 340 and the second concentrate nozzle 350 may have the same form or may have different forms. In the embodiment shown in fig. 1-2, the raw water port 310 may be circular, and the first pure water port 320, the first concentrate port 330, the second pure water port 340, and the second concentrate port 350 may be circular rings centered on the raw water port 310. In some embodiments, the raw water port 310, the first pure water port 320, the first concentrate port 330, the second pure water port 340, and the second concentrate port 350 of the filter element assembly 10 may be connected with pipe joints. The adapter may be used to connect the cartridge assembly 10 to a waterway. The filter flask 300 as a carrier may have various shapes, and is not particularly limited.

After the raw water enters the filter flask 300, the raw water can be filtered according to the conduction condition of the passage corresponding to the reverse osmosis filter element.

For the first reverse osmosis filter cartridge 100, after the raw water flows into the filter flask 300 through the raw water inlet 310, the raw water may flow into the first reverse osmosis filter cartridge 100 through the first raw water port 110. Pure water formed after the raw water is filtered may flow to the first pure water port 320 through the first pure water end 120, and raw water that is not filtered may form concentrated water to flow to the first concentrated water port 330 through the first concentrated water end 130.

For the second reverse osmosis cartridge 200, after the raw water flows into the filter flask 300 through the raw water port 310, the raw water may flow into the second reverse osmosis cartridge 200 through the second raw water port 210. Pure water formed by filtered raw water may flow to the second pure water port 340 through the second pure water end 220, and concentrated water formed by unfiltered raw water may flow to the second concentrated water port 350 through the second concentrated water end 230.

The composite filter element with the arrangement has the advantages that the filter bottle 300 can provide better support for the first reverse osmosis filter element 100 and the second reverse osmosis filter element 200, the internal structures of the first reverse osmosis filter element 100 and the second reverse osmosis filter element 200 are protected, the whole device structure is more stable, and each water gap is arranged on the filter bottle 300, so that the installation is convenient.

Illustratively, the first reverse osmosis cartridge 100 may include a first center tube 140 on a tube wall of which the first through holes 150 may be provided, and a first filter membrane 160 that may surround the first center tube 140. The first raw water end 110 and the first concentrate end 130 may be oppositely disposed along an axis of the first center tube 140. The first pure water end 120 may face a wall of the first center tube 140 and may communicate with the first through hole 150, and the first center tube 140 may communicate with the first pure water port 320. The first reverse osmosis filter element 100 may be formed by repeatedly winding a reverse osmosis membrane around the first center tube 140. When the first raw water end 110 and the first concentrated water end 130 are disposed opposite to each other along the axis of the first central tube 140, the distance from the raw water entering the first reverse osmosis filter element 100 from the first raw water end 110 to the first concentrated water end 130 is the longest, so that the raw water is filtered sufficiently in the first reverse osmosis filter element 100 to form concentrated water flowing out from the first concentrated water end 130. The pure water formed by filtering flows out of the first pure water end 120, flows into the first central tube 140 through the first through hole 150, flows in the first central tube 140 to the first pure water port 320, and flows out of the first pure water port 320.

The second reverse osmosis cartridge 200 may include a second center tube 240, which may have a second through hole 250 formed in a tube wall thereof, and a second filter membrane 260, which may surround the second center tube 240. The second raw water end 210 and the second concentrate end 230 may be oppositely disposed along the axis of the second center tube 240. The second pure water end 220 may face a tube wall of the second center tube 240 and may communicate with the second through hole 250, and the second center tube 240 may communicate with the second pure water port 340. The second reverse osmosis filter element 200 may be formed by repeatedly winding a reverse osmosis membrane around the second center tube 240. When the second raw water end 210 and the second concentrated water end 230 are oppositely arranged along the axis of the second central tube 240, the distance from the raw water entering the second reverse osmosis filter element 200 from the second raw water end 210 to the second concentrated water end 230 is the longest, so that the raw water is fully filtered in the second reverse osmosis filter element 200 to form concentrated water which flows out from the second concentrated water end 230. The pure water formed by filtering flows out of the second pure water end 220, flows into the second center tube 240 through the second through hole 250, flows into the second center tube 240 to the second pure water port 340, and flows out of the second pure water port 340.

Wherein the first center tube 140 and the second center tube 240 may be coaxial and the first center tube 140 may be disposed through the second center tube 240. Reference is made to the cross-sectional view shown in fig. 3. The first central tube 140 and the second central tube 240 are coaxial, which facilitates the connection between the first reverse osmosis filter element 100 and the second reverse osmosis filter element 200, and facilitates the opening of the water ports on the filter flask 300. The arrangement of the first center tube 140 and the second center tube 240 also prevents the pure water flowing in the filter flask 300 from being disturbed by other factors, and avoids the situation that the pure water obtained by filtering is secondarily polluted. The arrangement of the first and second through

holes

150 and 250 prevents the pure water from flowing back after entering the first and

second center tubes

140 and 240, thereby enhancing the stability of the pure water flowing out. The arrangement of the first filter membrane 160 and the second filter membrane 260 enhances the filtering effect, so that the quality of the pure water is better.

Illustratively, as shown in FIG. 3, the first filter membrane 160 and the second filter membrane 260 may be disposed in series along an axis, and the second filter membrane 260 may be disposed between the first filter membrane 160 and the permeate end of the filter vial 300. The raw water port 310, the first pure water port 320, the first concentrate port 330, the second pure water port 340 and the second concentrate port 350 may be disposed on the water end. Like this, first filter membrane 160 and second filter membrane 260 can be parallel connection's state, and each filter membrane can the autonomous working, and is not influenced each other, both can realize going out water alone, also can realize two filter membranes and go out water simultaneously, make things convenient for this filter element group spare 10 to use in multiple occasion. The tangent plane of the first filter membrane 160, the second filter membrane 260, the raw water port 310, the first pure water port 320, the first concentrated water port 330, the second pure water port 340 and the second concentrated water port 350 can be in the form of circular rings, and the combination of the two parts can save more space and is also beneficial to the water taking operation of users.

Illustratively, the first reverse osmosis cartridge 100 may also include a first cartridge end cap 170. The first cartridge end cap 170 can include a first end cap 171 and a first bottom tube 172. The first end cap 171 may be capped over the end of the first filter membrane 160 where the first concentrate end 130 is located. The first end cap 171 may be provided with a first bottom hole 173. The first bottom tube 172 may extend from an edge of the first bottom hole 173 toward the water passing end. The first bottom tube 172 may be interposed between the first center tube 140 and the second center tube 240. A passage formed between an outer sidewall of the first bottom tube 172 and an inner sidewall of the second center tube 240 may be connected between the second through hole 250 and the second pure water port 340. A channel formed between an outer sidewall of the first center pipe 140 and an inner sidewall of the first bottom pipe 172 may be connected between the first concentrate end 130 and the first concentrate inlet 330. In some embodiments, the first end cap 171 may also be attached to the inside wall of the filter flask 300 to provide a more secure support for the first filter membrane 160. The concentrate formed by the filtration in the first reverse osmosis cartridge 100 flows from the first concentrate end 130 to the first bottom hole 173 and into the first bottom tube 172. The side wall of the first bottom pipe 172 may form a water passage with the side wall of the first center pipe 140 or the side wall of the second center pipe 240, and may be used to circulate pure water. The water passage formed by the inner sidewall of the first bottom tube 172 and the outer sidewall of the first center tube 140 can be used to circulate the concentrate. Such setting for first reverse osmosis filter core 100 is more stable on structure, has promoted the stability of whole device, and is independent each other between each water route moreover, mutual noninterference has promoted the quality of water of the pure water that first pure water mouth 320 and second pure water mouth 340 flowed out.

Illustratively, the second reverse osmosis cartridge 200 may also include a second cartridge end cap 270. The second cartridge end cap 270 can include a second end cap 271 and a second bottom tube 272. A second end cap 271 may be capped over the end of the second filter membrane 260 where the second concentrate end 230 is located. The second end cap 271 may be provided with a second bottom hole 273. The second bottom tube 272 may extend from the edge of the second bottom hole 273 toward the water passing end. The second center tube 240 may be inserted within the second bottom tube 272. A channel formed between an outer sidewall of the second center pipe 240 and an inner sidewall of the second bottom pipe 272 may be connected between the second concentrate end 230 and the second concentrate inlet 350. The channel formed between the outer sidewall of the second bottom tube 272 and the inner sidewall of the filter flask 300 may be connected between the raw water port 310 and the first and second raw water ends 110 and 210. In some embodiments, the second end cap 271 can be attached to the inside wall of the filter vial 300 to provide more robust support for the second filter membrane 260. Concentrate formed by filtration in the second reverse osmosis cartridge 200 flows from the second concentrate end 230 to the second bottom port 273 and into the second bottom tube 272. The side wall of the second bottom tube 272 may form a water passage with the side wall of the filter flask 300 or the side wall of the second center tube 240. Wherein the water passing path formed by the outer sidewall of the second bottom tube 272 and the inner sidewall of the filter flask 300 can be used for circulating raw water; the water passage formed by the inner sidewall of the second bottom tube 272 and the outer sidewall of the second center tube 240 may be used to circulate the concentrate. Such setting for second reverse osmosis filter core 200 is structurally more stable, has promoted the stability of integrated device, and is independent each other between each water passage moreover, mutual noninterference has avoided the raw water to get into the condition that carries out secondary pollution to the pure water after filter flask 300, has promoted the quality of water of the pure water of first pure water mouth 320 and the outflow of second pure water mouth 340.

Illustratively, as shown in FIG. 4, the first filter membrane 160 may be disposed within the second center tube 240. When the water intake flow of the user is small, the filtering effect of the second reverse osmosis filter element 200 may be poor, and the pure water filtered by the second reverse osmosis filter element 200 flows into the second central tube 240 and is filtered once by the first filter membrane 160, so that the filtering effect can be enhanced, and the quality of the pure water flowing out of the second pure water port 340 is better.

In embodiments where the first filter membrane 160 is disposed within the second center tube 240, the first reverse osmosis cartridge 100 may further comprise a first cartridge end cap 170. The first cartridge end cap 170 can include a first end cap 171 and a first bottom tube 172. The first end cap 171 may be capped over the end of the first filter membrane 160 where the first concentrate end 130 is located. The first end cap 171 may be provided with a first bottom hole 173. The first bottom tube 172 may extend from an edge of the first bottom aperture 173 toward the water passing end of the filter flask 300. The first bottom tube 172 is interposed between the first center tube 140 and the second center tube 240. A channel formed between an inner sidewall of the first bottom tube 172 and an outer sidewall of the first center tube 140 may be connected between the first concentrate end 130 and the first concentrate inlet 330. A passage formed between an outer sidewall of the first bottom tube 172 and an inner sidewall of the second center tube 240 may be connected between the second through hole 250 and the second pure water port 340. The raw water port 310, the first pure water port 320, the first concentrate port 330, the second pure water port 340 and the second concentrate port 350 may be disposed on the water passing end. The first end cap 171 may provide better support for the first filter membrane 160, improving the stability of the overall device. The concentrate filtered by the first reverse osmosis cartridge 100 flows from the first concentrate end 130 to the first bottom hole 173 and into the first bottom pipe 172. The side wall of the first bottom pipe 172 may form a water passage with the side wall of the first center pipe 140 or the second center pipe 240, wherein the water passage formed by the outer side wall of the first bottom pipe 172 and the inner side wall of the second center pipe 240 may be used to circulate pure water. The water passage formed by the inner sidewall of the first bottom pipe 172 and the outer sidewall of the first center pipe 140 may be used to circulate the concentrate. Due to the arrangement, the water passing passages are independent from each other and do not interfere with each other, and the water quality of pure water flowing out of the first pure water port 320 and the second pure water port 340 is improved.

Further, the second reverse osmosis cartridge 200 may also include a second cartridge end cap 270. The second cartridge end cap 270 can include a second end cap 271 and a second bottom tube 272. A second end cap 271 may be capped over the end of the second filter membrane 260 where the second concentrate end 230 is located. The second end cap 271 may be provided with a second bottom hole 273. The second bottom tube 272 may extend from the edge of the second bottom hole 273 toward the water passing end. The first center tube 140 may be inserted within the second center tube 240. A channel formed between an outer sidewall of the second center pipe 240 and an inner sidewall of the second bottom pipe 272 may be connected between the second concentrate end 230 and the second concentrate inlet 350. The channel formed between the outer sidewall of the second bottom tube 272 and the inner sidewall of the filter flask 300 may connect the raw water port 310 with the first raw water end 110 and the second raw water end 210. The second end cap 271 may be attached to the inside wall of the filter vial 300, which may provide a more stable support for the second filter membrane 260. The concentrate formed by filtration in the second reverse osmosis cartridge 200 flows from the second concentrate end 230 to the second bottom opening 273 and into the second bottom tube 272. The side wall of the second bottom tube 272 may form a water passage with the side wall of the filter flask 300 or the side wall of the second center tube 240. Wherein the water passage formed by the outer sidewall of the second bottom tube 272 and the inner sidewall of the filter flask 300 may be used to circulate the raw water. The inner sidewall of the second bottom tube 272 and the outer sidewall of the second center tube 240 may be used to circulate the concentrate. Such setting for second reverse osmosis filter core 200 is structurally more stable, has promoted the stability of integrated device, and is independent each other between each water passage moreover, mutual noninterference has avoided the raw water to get into the condition that carries out secondary pollution to the pure water after filter flask 300, has promoted the quality of water of the pure water of first pure water mouth 320 and the outflow of second pure water mouth 340.

Illustratively, the ends of the first center tube 140 and the second center tube 240 distal from the flooded end are connected to each other. In the embodiment shown in fig. 2, the top of the first center tube 140 may extend beyond the first filter membrane 160 and connect to the inside of the top wall of the second center tube 240. In this way, the first center tube 140 and the second center tube 240 may be structurally connected. On the one hand, this arrangement may simplify the structure of the first center tube 140 and the second center tube 240, and on the other hand, may improve structural strength and stability by using the first center tube 140 and the second center tube 240 as an integrated piece.

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 of the respective components as they relate to their own contours.

For ease of description, relative terms of regions, such as "over … …", "over … …", "over … …", "over", etc., may be used herein to describe the regional positional relationship of one or more components or features to other components or features shown in the figures. It is to be understood that the relative terms of the regions are intended to encompass not only the orientation of the element as depicted in the figures, but also different orientations in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" may include both orientations 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 above embodiments, and that many variations and modifications may be made in accordance with the teachings of the present invention, all within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a water purification system, its characterized in that, water purification system has into water end and goes out the water end, water purification system still includes:

the water inlet of the variable frequency pump is connected with the water inlet end;

the first reverse osmosis filter element is arranged on a first passage, a water inlet of the first passage is connected with a water outlet of the variable frequency pump, and a water outlet of the first passage is connected with a water outlet end;

the second reverse osmosis filter element is arranged on a second passage, a water inlet of the second passage is connected with a water outlet of the variable frequency pump, and a water outlet of the second passage is connected with the water outlet end;

a valve assembly provided on the first passage and the second passage for alternatively communicating the first passage and the second passage,

wherein the flow rate of the first reverse osmosis filter element is less than the flow rate of the second reverse osmosis filter element.

2. The water purification system of claim 1,

the water outlet end comprises a water taking end and a water discharging end,

the first passage comprises a first raw water pipeline, a first pure water pipeline and a first concentrated water pipeline, the first raw water pipeline is connected between the water outlet of the variable frequency pump and the first raw water end of the first reverse osmosis filter element, the first pure water pipeline is connected between the first pure water end of the first reverse osmosis filter element and the water taking end, and the first concentrated water pipeline is connected between the first concentrated water end of the first reverse osmosis filter element and the water discharging end;

the second passage comprises a second raw water pipeline, a second pure water pipeline and a second concentrated water pipeline, the second raw water pipeline is connected between the water outlet of the variable frequency pump and a second raw water end of the second reverse osmosis filter element, the second pure water pipeline is connected between a second pure water end of the second reverse osmosis filter element and the water taking end, and the second concentrated water pipeline is connected between a second concentrated water end of the second reverse osmosis filter element and the water discharging end;

the valve assembly comprises a first water outlet valve arranged on the first pure water pipeline, a first concentrated water valve arranged on the first concentrated water pipeline, a second water outlet valve arranged on the second pure water pipeline and a second concentrated water valve arranged on the second concentrated water pipeline.

3. The water purification system of claim 1, further comprising a controller for controlling the variable frequency pump to operate at a first output flow rate corresponding to a flow rate of the first reverse osmosis cartridge when the valve assembly renders the first passage conductive and to operate at a second output flow rate corresponding to a flow rate of the second reverse osmosis cartridge when the valve assembly renders the second passage conductive.

4. The water purification system of claim 2, further comprising a heating device disposed on the first purified water line.

5. The water purification system of claim 4, wherein the heating device is disposed downstream of the first outlet valve.

6. The water purification system of claim 1, wherein the first and second reverse osmosis cartridges are integrated into a composite cartridge.

7. The water purification system of claim 6, wherein the composite filter element comprises a filter flask having a raw water port, a first pure water port, a first concentrate water port, a second pure water port, and a second concentrate water port, the first reverse osmosis filter element and the second reverse osmosis filter element each being housed within the filter flask,

the first raw water end of the first reverse osmosis filter element is connected with the raw water port, the first pure water end of the first reverse osmosis filter element is connected with the first pure water port, and the first concentrated water end of the first reverse osmosis filter element is connected with the first concentrated water port; and is provided with

The second reverse osmosis filter element is characterized in that a second raw water end is connected with the raw water port, a second pure water end is connected with the second pure water port, and a second concentrated water end is connected with the second concentrated water port.

8. The water purification system of claim 7, wherein the first reverse osmosis filter element comprises a first central tube and a first filter membrane, the first central tube is provided with a first through hole in the tube wall, the first filter membrane surrounds the first central tube, the first raw water end and the first concentrated water end are oppositely arranged along the axis of the first central tube, the first pure water end faces the tube wall of the first central tube and is communicated with the first through hole, and the first central tube is communicated with the first pure water port;

the second reverse osmosis filter element comprises a second central tube and a second filter membrane, wherein a second through hole is formed in the tube wall of the second central tube, the second filter membrane surrounds the second central tube, the second raw water end and the second concentrated water end are oppositely arranged along the axis of the second central tube, the end face of the second pure water faces the tube wall of the second central tube and is communicated with the second through hole, the second central tube is communicated with the second pure water port,

wherein the first base pipe is coaxial with the second base pipe, and the first base pipe is disposed through the second base pipe.

9. The water purification system of claim 8, wherein the first and second filter membranes are disposed in series along the axis, and the second filter membrane is disposed between the first filter membrane and a head end of the filter flask, the raw water port, the first pure water port, the first concentrate port, the second pure water port, and the second concentrate port all being disposed on the head end.

10. The water purification system of claim 8, wherein the first filter membrane is disposed within the second central tube.