CN211896177U

CN211896177U - Filter element assembly and water purifier with same

Info

Publication number: CN211896177U
Application number: CN202020392217.2U
Authority: CN
Inventors: 韩升学; 官阔荣; 贺素平
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2020-11-10
Anticipated expiration: 2030-03-24

Abstract

The utility model provides a filter element group spare and purifier that has it. This filter element group spare includes the filter flask, and center tube and the reverse osmosis membrane of setting in the filter flask, the filter flask has former mouth of a river, pure mouth of a river and dense mouth of a river, reverse osmosis membrane coils on the center tube, it flows into the filter flask to intake through former mouth of a river, see through reverse osmosis membrane inflow center tube, it holds the chamber to have in the filter flask, filter element group spare still includes the water pocket, the water pocket is located and holds the intracavity, and the water inlet intercommunication center tube of water pocket, the pure mouth of a river of delivery port intercommunication of water pocket, at least partly by elastic material of water pocket is made, so that the volume of water pocket can change according to. Therefore, after the filter element assembly with the structure stops water making, the pure water in the water bag can be squeezed out by utilizing the 'recovery capacity' of the water bag, and the squeezed pure water can wash the reverse osmosis membrane, so that the first cup of water taken by a user in each water taking process is the pure water which is not polluted by the concentrated water.

Description

Filter element assembly and water purifier with same

Technical Field

The utility model relates to a technical field of aqueous cleaning specifically, relates to a filter element group spare and purifier that has it.

Background

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

Former aquatic has higher TDS (soluble solid total amount) more, and reverse osmosis water purification machine can block a large amount of ions in former aquatic before the osmotic membrane under the effect of high-pressure pump, and the pure water through the osmotic membrane can flow through the center tube. Meanwhile, the reverse osmosis membrane can also discharge high-TDS concentrated water according to a certain proportion when the direct drinking water is prepared. Although the concentrated water can be discharged through the concentrated water pipeline, a small amount of concentrated water still remains in the reverse osmosis membrane after water production is finished. After a long shutdown, ions in the concentrate diffuse into the pure water, thereby contaminating the pure water stored in the central tube and downstream thereof.

In order to prevent concentrated water in reverse osmosis membranes from polluting pure water, some existing reverse osmosis water purifiers are provided with a water tank and a flushing waterway. Pure water is stored in the water tank. The one end in washing water route is connected the water tank and the other end is connected to the water inlet of booster pump, is provided with check valve and solenoid valve etc. on the washing water route. During standby, the flushing time can be set, and the booster pump and the electromagnetic valve are opened to utilize the water in the water tank to flush the reverse osmosis membrane. However, the addition of an additional water tank and a flushing waterway leads to an increase in cost of the product and is disadvantageous to miniaturization of the product. Furthermore, this also makes the control circuit of the reverse osmosis water purifier complicated because the control circuit needs to consider when water is stored in the water tank, and the opening and closing of the solenoid valve and the booster pump, and the like.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that exists among the prior art at least in part, the utility model provides a filter element group spare, including the filter flask, and center tube and the reverse osmosis membrane of setting in the filter flask, the filter flask has former mouth of a river, pure mouth of a river and dense mouth of a river, reverse osmosis membrane coils on the center tube, it flows in the filter flask to intake through former mouth of a river, see through reverse osmosis membrane inflow center tube, it holds the chamber to have in the filter flask, filter element group spare still includes the water pocket, the water pocket is located and holds the intracavity, and the water inlet intercommunication center tube of water pocket, the delivery port intercommunication pure mouth of a river of water pocket, at least a part of water pocket is made by elastic material, so that the volume of water pocket.

Therefore, the filter element assembly with the structure can utilize the 'restoring capacity' of the water bag self to extrude pure water in the filter element assembly after stopping water production, and the extruded pure water can wash the reverse osmosis membrane so as to prevent concentrated water from being reserved in the filter element assembly and further avoid the pollution of the pure water in the filter element assembly. Thus, the first cup of water taken by the user each time the user takes water is pure water that is not contaminated by the concentrate. Moreover, because the flushing action is completed under the driving of the 'restoring capacity' of the water bag, and no additional water path is added, no additional valve or switch is needed, and the number of parts of the product is not increased. On the basis, the control circuit of the water purifier adopting the filter element assembly basically has no influence. Because the filter element group spare is less in the dense water that remains when not making water in it, consequently the volume of water pocket need not to set up too big, and it is less to the whole size influence of filter element group spare, consequently can not exert an influence to the whole size of the purifier that adopts this filter element group spare basically.

Illustratively, the water bag includes a bag body, a first interface and a second interface, the bag body has a first mouth of water and a second mouth of water, the first interface sets up the water inlet that forms the water bag on the first mouth of water, the second interface sets up the delivery port that forms the water bag on the second mouth of water, first interface connection center tube, the second interface is connected to pure mouth of water, the bag body is made by elastic material.

Therefore, the water bag with the structure is simple in structure and easy to realize.

Illustratively, the first and second water ports are located on opposite sides of the bladder.

Like this, when the pure water flows in utricule inside, can reduce the resistance that rivers received in it, make rivers more smooth and easy, simultaneously, can also set up the water pocket between center tube and pure water mouth like this, more do benefit to the inside overall arrangement of filter element group spare.

Illustratively, the volume of the capsule at atmospheric pressure is less than the volume of the receiving chamber.

Like this, when filter element group spare system water in-process, the utricule can expand, can save more deposit water on the one hand, and on the other hand can store elastic potential energy to can extrude the pure water in it under self "restoring capacity" and wash reverse osmosis membrane when filter element group spare stops system water, make the water pocket normally work holding the intracavity.

Illustratively, the filter flask has opposite first and second ends, a pure water port is disposed on the first end, and the center tube and the reverse osmosis membrane are spaced apart from the first end to form a receiving chamber.

The filter flask that has above structure utilizes the space relation between center tube and reverse osmosis membrane and the filter flask, and the natural formation holds the chamber, has reduced the design to holding the chamber, has improved the availability factor of filter flask inner space for the structure of filter element group spare is compacter.

Illustratively, the concentrate port and the raw water port are both disposed on the first end.

Thus, for a vertical purifier, the filter flask is typically oriented with the first end facing downward and the second end facing upward. Air is usually present in the water bladder, where it is located above the pure water. When filter element group spare stops system water and washes, the air in the water pocket is extruded the pure water in the center tube earlier and is gone the thick water of row, and subsequently, the air in the water pocket will be filled the reverse osmosis membrane in, the air can avoid filter element group spare to stop the ion of its interior former aquatic when making water to the diffusion behind the membrane to there is not the problem of raw water pollution pure water, can further ensure the quality of water of the first section water after shutting down from this.

Exemplarily, reverse osmosis membrane's lateral surface is the former water end of filter core, and reverse osmosis membrane's terminal surface has the dense mouth of a river of filter core, still has the former water cavity of the former mouth of a river of intercommunication and the former water end of filter core in the filter flask, and former water cavity is the annular, and former water cavity centers on reverse osmosis membrane and dense water passageway, and dense water passageway is the annular around holding the chamber, and dense water passageway intercommunication dense mouth of a river and reverse osmosis membrane's the dense mouth of a river of filter core.

The filter element assembly with the structure has the advantages of simple and compact structure and small volume. And the raw water cavity with the structure occupies small space, the reverse osmosis membrane has small size, the whole size of the filter flask can be reduced, and the product cost is reduced.

According to an aspect of the present invention, there is also provided a water purifier, comprising any one of the above filter element assemblies.

Illustratively, the purifier still includes booster pump, check valve, high pressure switch and controller, and the water inlet of check valve communicates to the pure water mouth of filter element group spare, and high pressure switch sets up in the check valve low reaches, and the controller electricity is connected to booster pump and high pressure switch, and the controller closes the booster pump in response to the closed signal of high pressure switch.

Therefore, the filter element assembly can be applied to a water purifier with a mechanical faucet, the problem that pure water behind a reverse osmosis membrane is polluted by concentrated water after the filter element assembly stops producing water is solved, and the phenomenon that a user takes a first cup of water with too high ion concentration is avoided.

Illustratively, the water purifier also comprises a booster pump and a controller, wherein a water outlet of the booster pump is communicated to a raw water port of the filter element assembly, a pure water port of the filter element assembly outputs pure water which can be used for communicating to an electric control faucet or other water taking devices, the controller is electrically connected to the booster pump, and the controller responds to an electric signal of closing water taking to close the booster pump after a preset time.

Therefore, the filter element assembly can be applied to a water purifier with a water taking device, the problem that pure water behind a reverse osmosis membrane is polluted by concentrated water after the filter element assembly stops making water is solved, and the phenomenon that a user takes a first cup of water with too high ion concentration is avoided.

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 cross-sectional view of a filter cartridge assembly according to an exemplary embodiment of the present invention;

fig. 2 is a perspective view of a filter cartridge assembly according to an exemplary embodiment of the present invention;

FIG. 3 is a schematic diagram of a water circuit of an exemplary embodiment of a water purifier having the filter cartridge assembly; and

FIG. 4 is a schematic diagram of a water circuit of another exemplary embodiment of a water purifier having the filter element assembly.

Wherein the figures include the following reference numerals:

100. a filter element assembly; 200. a filter flask; 201. a first end; 202. a second end; 210. a raw water port; 211. a raw water cavity; 220. a pure water port; 230. a dense water port; 231. a concentrated water channel; 240. an accommodating chamber; 300. a central tube; 400. a reverse osmosis membrane; 500. a water bladder; 510. a capsule body; 511. a first nozzle; 512. a second water gap; 520. a first interface; 530. a second interface; 600. 600' and a water purifier; 610. a booster pump; 620. a check valve; 630. a mechanical faucet; 640. a high voltage switch; 650. an electrically controlled faucet.

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 filter element assembly 100 comprising a filter flask 200, a center tube 300, and a reverse osmosis membrane 400. Both the center tube 300 and the reverse osmosis membrane 400 are disposed within the filter flask 200. The filter flask 200 has a raw water port 210, a pure water port 220, and a concentrate port 230. The raw water port 210, the pure water port 220, and the concentrate port 230 may all be located on the same end of the filter flask 200 as shown. Alternatively, the raw water port 210, the pure water port 220, and the concentrate port 230 may be located on different ends of the filter flask 200 as needed, for example, the raw water port 210 and the concentrate port 230 may be provided on the same end, and the pure water port 220 may be provided on the other end. The reverse osmosis membrane 400 is wound around the central tube 300. The inlet water can enter the filter flask 200 through the raw water port 210, and the prepared pure water enters the central pipe 300 through the filtration of the reverse osmosis membrane 400 and is finally discharged from the pure water port 220, and the concentrated water generated in the water preparation process is discharged from the concentrated water port 230. The winding of the reverse osmosis membrane 400 on the central tube 300 is well known to those skilled in the art, is not discussed in the present invention, and will not be described in detail.

Within the filter cartridge 200 of the filter cartridge assembly 100 is a receiving cavity 240, the filter cartridge assembly 100 further comprising a water bladder 500. Wherein, the water bag 500 is located in the accommodating cavity 240, a water inlet of the water bag 500 is communicated with the central tube 300, and a water outlet of the water bag 500 is communicated with the purified water inlet 220. At least a portion of the capsule body 510 is made of an elastic material so that the volume of the water bladder 500 can be changed according to the water pressure inside thereof. When the water pressure in the water bladder 500 continues to increase after the water bladder 500 is filled, the elastic material is deformed such that the volume of the water bladder 500 increases. When the water is no longer stored in the water bag 500, the elastic material has the ability to recover its deformation, and drives the water in the water bag 500 to be discharged outwards and further discharged through the concentrate inlet 230. The elastic material may comprise, for example, a rubber material, a silicone material, or the like.

Specifically, when the filter element assembly 100 is used for water production, pure water firstly enters the water bag 500 from the end of the central pipe 300, and the produced pure water has certain pressure, so that the pressure inside the water bag 500 is increased, the water bag 500 is filled, and the volume of the water bag 500 is increased. After the water production of the filter element assembly 100 is completed and the pure water is not filled into the water bag 500, the pure water in the water bag 500 is discharged out of the water bag 500 due to the extrusion of the elastic material part of the water bag 500, flows back to the central tube 300, and is discharged out through the concentrate outlet 230 along with the water remaining in the central tube 300.

Therefore, the filter element assembly 100 with the structure can utilize the 'restoring capability' of the water bag 500 to extrude pure water in the filter element assembly 100 after stopping water production, and the extruded pure water can wash the reverse osmosis membrane 400, so that the pure water in the filter element assembly 100 is not reserved and polluted. Thus, the first cup of water taken by the user each time the user takes water is pure water that is not contaminated by the concentrate. Moreover, since the flushing operation is performed under the driving of the "restoring capability" of the water bag 500 itself, and no additional water path is added, no additional valve or switch is required, and the number of parts of the product is not increased. On this basis, the control circuit of the water purifier adopting the filter element assembly 100 basically has no influence (the water purifier will be described in detail later). Since the filter element assembly 100 retains less concentrated water when no water is produced, the volume of the water bladder 500 does not need to be set too large, and the influence on the overall size of the filter element assembly 100 is small, so that the overall size of a water purifier using the filter element assembly 100 is not substantially affected.

Illustratively, the water bladder 500 includes a bladder body 510, a first port 520 and a second port 530, the bladder body 510 having a first water port 511 and a second water port 512, the first port 520 being disposed on the first water port 511 to form a water inlet of the water bladder 500. The second port 530 is provided on the second water port 512 to form a water outlet of the water bladder 500. The capsule 510 is connected to the central tube 300 by a first interface 520 and the capsule 510 is connected to the pure water port 220 by a second interface 530.

Bladder 510 is made of an elastomeric material. The first and

second ports

520 and 530 may be used to connect and secure the bladder 510 to the center tube 300 and the filter flask 200. The first and

second water ports

511 and 512 are for water to flow between the central tube 300 and the pure water port 220.

Accordingly, the water bladder 500 having the above structure is simple in structure and easy to implement.

Illustratively, first and

second water ports

511, 512 are located on opposite sides of bladder 510. I.e. as shown in the position in which it is located, the first nozzle 511 is located at the bottom of the capsule 510 and the second nozzle 512 is located at the top of the capsule 510.

Thus, when pure water flows inside the capsule 510, resistance to water flow therein can be reduced, making water flow smoother, and at the same time, the water capsule 500 can be disposed between the central tube 300 and the pure water port 220, which is more favorable for the layout inside the filter element assembly 100.

Illustratively, the volume of bladder 510 at atmospheric pressure is less than the volume of receiving chamber 240. Since the volume of the capsule 510 will increase after being filled with pure water and subjected to pressure, the volume of the receiving chamber 240 will be larger than the volume of the capsule 510 under atmospheric pressure in order to be able to accommodate the increased volume of the capsule 510.

Like this, when filter element group spare 100 system water in-process, utricule 510 can expand, can save more water on the one hand, and on the other hand can store elastic potential energy to can extrude the pure water in it under self "resume ability" and wash reverse osmosis membrane 400 when filter element group spare 100 stops system water, make water pocket 500 normally work in holding chamber 240.

Illustratively, the filter bottle 200 has opposite first and second ends 201, 202 with a pure water port 220 disposed on the first end 201 and a center tube 300 and a reverse osmosis membrane 400 spaced from the first end 201 to form a receiving chamber 240.

The filter bottle 200 with the structure naturally forms the accommodating cavity 240 by utilizing the spatial relationship between the central tube 300 and the reverse osmosis membrane 400 and the filter bottle 200, reduces the design of the accommodating cavity 240, improves the use efficiency of the space in the filter bottle 200, and makes the structure of the filter element assembly 100 more compact.

Illustratively, the filter flask 200 further has a raw water port 210 and a concentrate water port 230, both the raw water port 210 and the concentrate water port 230 being disposed on the first end 201. For an upright purifier, the first end 201 of the filter cartridge 200 is generally oriented downward and the second end 202 is oriented upward (i.e., with the filter cartridge assembly 100 shown in FIG. 1 inverted). Air is typically present in the water bladder 500, and in the water bladder 500, the air is located above the pure water. When filter element group spare 100 stops system water and washes, the pure water in the center tube 300 is extruded earlier to the air in the water pocket 500 and is drained dense water, afterwards, in reverse osmosis membrane 400 will be filled to the air in the water pocket 500, the ion of its interior former aquatic when air can avoid filter element group spare 100 to stop system water is to diffusion behind the membrane to there is not the problem of raw water pollution pure water, can further ensure the quality of water of the first section water after shutting down from this.

Illustratively, the end face of the reverse osmosis membrane 400 is provided with a filter element concentrate port (not shown), and the filter flask 200 is also internally provided with a concentrate passage 231 communicating the concentrate port 230 with the filter element concentrate port, wherein the concentrate passage 231 is annular around the accommodating cavity 240. The filter element assembly 100 shown in the figure is cylindrical, an annular concentrated water channel 231 is arranged on the outer peripheral wall of the accommodating cavity 240, and the concentrated water channel 231 is communicated with a concentrated water port and a filter element concentrated water port of the reverse osmosis membrane 400.

Illustratively, the outer side surface of the reverse osmosis membrane 400 is a raw water end of the filter element, a raw water cavity 211 communicating the raw water port 210 with the raw water end of the filter element is further arranged in the filter bottle 200, the raw water cavity 211 is annular, and the raw water cavity 211 surrounds the reverse osmosis membrane 400 and the concentrated water channel 231.

As shown in the drawings, the filter bottle 200 is cylindrical, the concentrated water channel 231 and the reverse osmosis membrane 400 inside the filter bottle may be both cylindrical, the outer side surface of the concentrated water channel 231 is spaced apart from the inner side surface of the filter bottle 200, and the outer side surface of the reverse osmosis membrane 400 is also spaced apart from the filter bottle 200, so that the filter bottle 200, the concentrated water channel 231 and the reverse osmosis membrane 400 form an annular raw water cavity 211.

Therefore, the filter element assembly 100 with the structure has simple and compact structure and small volume. And the raw water cavity 211 with the structure occupies a small space, and the reverse osmosis membrane 400 has a small size, so that the whole size of the filter bottle 200 can be reduced, and the product cost is reduced.

According to an aspect of the present invention, there is also provided a water purifier 600, 600' comprising any one of the filter element assemblies 100 as described above.

As shown in FIG. 3, in one embodiment, water purifier 600 includes a booster pump 610, a check valve 620, a high pressure switch 640, and a controller. A water inlet of the check valve 620 is communicated to the pure water port 220 of the filter element assembly 100, a water outlet of the check valve 620 is communicated to the mechanical tap 630, a high-pressure switch 640 is disposed downstream of the check valve 620, and a controller is electrically connected to the booster pump 610 and the high-pressure switch 640, the controller turning off the booster pump 610 in response to an electrical signal for closing the high-pressure switch 640.

In one embodiment, the water intake device operated by the user may be a mechanical faucet 630, when the user takes water through the mechanical faucet 630, the water outlet of the mechanical faucet 630 is communicated with the atmosphere, the high-voltage switch 640 detects that the pressure of the pipeline where the water intake device is located drops, the high-voltage switch 640 is turned on and sends a water intake electric signal, and the controller receives the water intake electric signal and controls the booster pump 610 to start and start water production. When a user closes the mechanical faucet 630 to stop taking water, because the booster pump 610 continues to produce water, pure water enters the water bag 500 of the filter element assembly 100, the pressure in the water bag 500 rises, the water bag 500 expands, until the high-voltage switch 640 detects that the pressure of the pure water outlet reaches the disconnected pressure value, the high-voltage switch 640 is disconnected, a water taking stopping electric signal is sent to the controller, and after the controller receives the water taking stopping electric signal, the booster pump 610 is controlled to stop working. At this time, since the high-pressure pure water is stored in the water bag 500 in the filter element assembly 100, and the pure water port is blocked from the outside because the user stops taking water, the pure water in the water bag 500 is driven by the self restoring capability to flow back to the central tube 300, and the pure water in the central tube 300 is squeezed out and discharged from the concentrate port 230 of the reverse osmosis membrane 400. Until the pressure in the water bladder 500 is equalized with the atmospheric pressure, the water discharge action is completed, and the water is prevented from being stored in the center pipe 300.

Therefore, the filter element assembly 100 can be applied to the water purifier 600 with the mechanical faucet, the problem that pure water behind the reverse osmosis membrane 400 is polluted by concentrated water after the filter element assembly 100 stops producing water is solved, and the phenomenon that the ion concentration of the first cup of water taken by a user is too high is avoided.

In another embodiment, as shown in fig. 4, the water purifier 600' includes a booster pump 610 and a controller, a water outlet of the booster pump 610 is connected to the raw water inlet 210 of the filter cartridge assembly 100, and the pure water inlet 220 of the filter cartridge assembly 100 outputs pure water. The pure water port 220 of the filter cartridge assembly 100 may be used to communicate to an electrically controlled faucet 650 or other water intake device, so long as an electrical signal is sent to shut off water intake when water intake ceases. The controller is electrically connected to the booster pump 610, and the controller turns off the booster pump 610 after a predetermined time in response to an electric signal that the water intake is turned off.

Taking the electric control faucet 650 as an example, as shown in fig. 4, when a user starts the electric control faucet 650 to start water taking, the electric control faucet 650 sends a water taking electric signal to the controller, and the controller starts the booster pump 610 to start water making after receiving the water taking electric signal. When the user stops taking water, the electric control faucet 650 is turned off to send a water taking stop signal to the controller, and after the controller receives the water taking stop signal, the booster pump 610 may be controlled to stop with a delay, that is, the booster pump 610 is turned off after a set time, for example, 1s, 2s, and the like. During the time period from the closing of the electrically controlled faucet 650 to the stopping of the booster pump 610, the booster pump 610 continues to produce water, but since the water outlet of the faucet is closed, the produced water enters the water bladder 500, the water bladder 500 expands, the pressure in the water bladder 500 increases, and the water storage capacity increases. At this time, the pressure inside the water bladder 500 is higher than the atmospheric pressure.

After the controller reaches the preset time, the booster pump 610 stops working, and the water bag 500 is driven by its own "restoring capacity" to push the water with pressure inside it back to the central tube 300 and be discharged from the concentrate inlet 230 of the reverse osmosis membrane 400. Until the pressure in the bladder 500 is equalized with the atmospheric pressure, the water discharge action is completed, and water is prevented from being stored in the center tube 300.

Therefore, the filter element assembly 100 can be applied to the water purifier 600' with the electric control faucet, the problem that pure water behind the reverse osmosis membrane 400 is polluted by concentrated water after the filter element assembly 100 stops producing water is solved, and the phenomenon that the ion concentration of the first cup of water taken by a user is too high is avoided.

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

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

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

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

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

Claims

1. The utility model provides a filter element group spare, includes filter flask (200) and sets up center tube (300) and reverse osmosis membrane (400) in the filter flask, the filter flask has former mouth of a river (210), pure water mouth (220) and dense mouth of a river (230), reverse osmosis membrane coils on the center tube, and it passes through to intake water the former mouth of a river flows in the filter flask sees through reverse osmosis membrane flows in the center tube, its characterized in that, have in the filter flask and hold chamber (240), filter element group spare still includes water pocket (500), the water pocket is located hold the intracavity, just the water inlet intercommunication of water pocket the center tube, the delivery port intercommunication of water pocket the pure mouth of a river, at least a part of water pocket is made by elastic material, so that the volume of water pocket can change according to its inside water pressure.

2. The filter element assembly according to claim 1, wherein the water bladder (500) comprises a bladder body (510) having a first water port (511) and a second water port (512), a first interface (520) arranged on the first water port forming a water inlet of the bladder, and a second interface (530) arranged on the second water port forming a water outlet of the bladder, the first interface being connected to the central tube (300), the second interface being connected to the pure water port (220), the bladder body being made of an elastic material.

3. The filter element assembly according to claim 2, wherein said first nozzle (511) and said second nozzle (512) are located on opposite sides of said bladder (510).

4. The filter cartridge assembly according to claim 2, wherein the volume of the bladder (510) at atmospheric pressure is smaller than the volume of the containing cavity (240).

5. The filter element assembly according to claim 1, wherein the filter flask (200) has opposite first (201) and second (202) ends, the clean water port (220) being provided on the first end, the central tube (300) and the reverse osmosis membrane (400) being spaced from the first end to form the receiving cavity (240).

6. The filter element assembly according to claim 5, wherein both said concentrate and said concentrate ports are provided on said first end (201).

7. The filter element assembly according to claim 6, wherein the outer side of the reverse osmosis membrane (400) is a raw water end of a filter element, the end face of the reverse osmosis membrane is provided with a concentrated water inlet of the filter element, the filter flask (200) is also internally provided with a raw water cavity (211) communicating the raw water inlet (210) with the raw water end of the filter element, the raw water cavity is annular, the raw water cavity surrounds the reverse osmosis membrane and a concentrated water channel (231), the concentrated water channel is annular surrounding the accommodating cavity, and the concentrated water channel communicates the concentrated water inlet with the concentrated water inlet of the filter element of the reverse osmosis membrane.

8. A water purification machine, characterized in that it comprises a filter element assembly according to any one of claims 1-7.

9. The water purifier of claim 8, further comprising a booster pump (610), a check valve (620), a high pressure switch (640) having a water inlet connected to the plain water port (220) of the filter cartridge assembly, and a controller electrically connected to the booster pump and the high pressure switch, the controller shutting off the booster pump in response to an electrical signal from the high pressure switch closing.

10. The water purifier of claim 8, further comprising a booster pump (610) having a water outlet connected to the raw water port (210) of the filter cartridge assembly, the pure water port of the filter cartridge assembly outputting pure water, and a controller electrically connected to the booster pump, the controller turning off the booster pump after a predetermined time in response to an electrical signal to turn off water intake.