CN221296581U

CN221296581U - Filter element assembly, water purifying device and flow guiding piece

Info

Publication number: CN221296581U
Application number: CN202323338827.7U
Authority: CN
Inventors: 黄廷健; 桂鹏; 陈伟明; 郑跃东
Original assignee: Midea Group Co Ltd; Foshan Shunde Midea Water Dispenser Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Foshan Shunde Midea Water Dispenser Manufacturing Co Ltd
Priority date: 2023-12-07
Filing date: 2023-12-07
Publication date: 2024-07-09
Anticipated expiration: 2033-12-07

Abstract

The utility model discloses a filter element assembly, a water purifying device and a flow guiding piece. The filter element assembly comprises a shell, a flow guide piece, a cylinder body, a first filter piece and a second filter piece, wherein the shell is provided with a containing cavity, a first water inlet, a first water outlet, a second water inlet and a second water outlet which are communicated with the containing cavity; the flow guiding piece is of an integrated structure and is internally provided with a flow guiding channel; the cylinder body is sleeved outside the flow guide piece, a first cavity is formed between the inner wall of the cylinder body and the outer wall of the flow guide piece, the first cavity is mutually isolated from the flow guide channel, a second cavity is formed between the outer wall of the cylinder body and the inner wall of the shell, the second cavity is communicated with the flow guide channel, the first water inlet and the first water outlet are communicated with the first cavity, the second water inlet is communicated with the second cavity, and the second water outlet is communicated with the flow guide channel; the first filter piece is arranged in the first cavity; the second filter is arranged in the second cavity. The utility model can provide the filter element component with simple structure and good filtering effect.

Description

Filter element assembly, water purifying device and flow guiding piece

Technical Field

The utility model relates to the technical field of water purifying appliances, in particular to a filter element assembly, a water purifying device and a flow guiding piece.

Background

In the related art, the front filter element and the rear filter element of the water purifying device are separately arranged to realize the same or different filtering functions, when a user changes the filter elements, the two filter elements are required to be simultaneously changed, the operation is more complicated, the two filter elements are separately arranged, and an external pipeline is required to be connected between the water outlets and the water inlets of the two filter elements, so that the filter element assembly and the pipeline of the water purifying device are complicated, namely the structure of the filter element assembly is complex, and the water purifying device is inconvenient to use.

Disclosure of utility model

The utility model mainly aims to provide a filter element assembly, a water purifying device and a flow guide piece, and aims to provide the filter element assembly which is simple in structure and good in filtering effect.

To achieve the above object, the present utility model provides a filter element assembly, including:

The shell is provided with a containing cavity, a first water inlet, a first water outlet, a second water inlet and a second water outlet, wherein the first water inlet, the first water outlet, the second water inlet and the second water outlet are communicated with the containing cavity;

The guide piece is arranged in the accommodating cavity, is of an integrated structure and is internally provided with a guide channel;

The cylinder is arranged in the accommodating cavity and sleeved outside the flow guide piece, a first cavity is formed between the inner wall of the cylinder and the outer wall of the flow guide piece, the first cavity is mutually isolated from the flow guide channel, a second cavity is formed between the outer wall of the cylinder and the inner wall of the shell, the second cavity is communicated with the flow guide channel, the first water inlet and the first water outlet are communicated with the first cavity, the second water inlet is communicated with the second cavity, and the second water outlet is communicated with the flow guide channel;

The first filtering piece is arranged in the first cavity; and

The second filtering piece is arranged in the second cavity.

In an embodiment, a first flow passage is formed between the first filter element and the inner wall of the cylinder, a second flow passage is formed between the first filter element and the outer wall of the flow guiding element, the first flow passage is communicated with one of the first water inlet and the first water outlet, and the second flow passage is communicated with the other of the first water inlet and the first water outlet.

In an embodiment, the filter element assembly further comprises a third filter element disposed in the first chamber for filtering water flowing into the first chamber, the first water inlet, the third filter element and the first filter element being sequentially arranged along an axial direction of the housing.

In an embodiment, the third filter member is sleeved outside the flow guiding member, and the third filter member has a first channel, and the first channel is communicated with the first water inlet and the first flow channel.

In an embodiment, the third filter element comprises a first filter shell and a first filter unit, wherein the first filter shell is provided with a first filter cavity which is in annular arrangement, a first water inlet hole and a first water outlet hole which are communicated with the first filter cavity, the first filter unit is arranged in the first filter cavity, and the first water inlet hole, the first filter cavity and the first water outlet hole are sequentially communicated to form the first channel.

In an embodiment, the first filter housing includes a first upper cover housing and a first lower cover housing that are annular setting, first upper cover housing detachably covers and locates on the first lower cover housing to enclose and close and form and be the annular setting first filter chamber, the roof of first upper cover housing is equipped with along its radial extension and around a plurality of first apopores of circumference distribution, the diapire of first lower cover housing is equipped with along its radial extension and around a plurality of first apopores of circumference distribution.

In an embodiment, the filter element assembly further comprises a fourth filter element arranged in the second cavity, the fourth filter element is located at one end of the cylinder body away from the second water inlet and sleeved outside the cylinder body, the fourth filter element is provided with a second channel, the second channel is communicated with the second cavity and the diversion channel, and one end of the fourth filter element close to the second water inlet is in butt seal with the peripheral wall of the cylinder body through a sealing element.

In an embodiment, a first annular boss is arranged on the outer wall of the cylinder body, which is close to one end of the fourth filter element, and a first annular clamping groove for clamping the sealing element is arranged on the first annular boss.

In an embodiment, a first flow channel is formed between the first filtering piece and the inner wall of the cylinder, one end, away from the second water inlet, of the flow guiding piece is matched with the shell to form a liquid passing channel which is communicated with the second channel and the first flow channel, and a valve body which is in unidirectional conduction from the second channel to the first flow channel is arranged in the liquid passing channel.

In an embodiment, the liquid passing channel comprises a third channel and a fourth channel, the third channel is arranged on the bottom wall of the containing cavity far away from the first water inlet, the fourth channel is arranged on the flow guiding piece, the second channel, the third channel, the fourth channel and the first channel are sequentially communicated, and the valve body is arranged in the fourth channel.

In an embodiment, the third channel includes a plurality of liquid passing grooves formed in the bottom wall of the accommodating cavity, the fourth channel includes a second sub-diversion channel and a third sub-diversion channel which are sequentially communicated with the liquid passing grooves, the valve body is arranged in the third sub-diversion channel, and when the water pressure in the second sub-diversion channel is greater than the water pressure in the first channel, the valve body unidirectionally conducts the second sub-diversion channel to the waterway of the first channel.

In one embodiment, the flow guide comprises:

A diversion pipe section provided with a first sub diversion channel communicated with the second water outlet; and

The liquid pipe section is arranged at one end of the flow guide pipe section, which is far away from the second water outlet, the liquid pipe section is provided with a second sub-flow guide channel which is communicated with the second cavity and the first sub-flow guide channel, a third sub-flow guide channel which is communicated with the second sub-flow guide channel is arranged on the outer side wall of the liquid pipe section, the third sub-flow guide channel is used for mounting a valve body, and the flow guide pipe section and the liquid pipe section are integrally arranged.

In an embodiment, an edge of the liquid passing pipe section, which is close to one end of the guide pipe section, is provided with an extension part, the extension part extends towards one side of the guide pipe section and forms an annular mounting groove with the liquid passing pipe section and the guide pipe section for mounting the first filter element, and the length of the extension part along the axial direction of the guide element is smaller than the length of the guide pipe section.

In one embodiment, the inner diameter of the excess fluid pipe section is greater than the outer diameter of the flow conduit pipe section;

And/or, the maximum value of the inner diameter of the guide pipe section is D1, and the D1 satisfies the following conditions: d1 is more than or equal to 8mm and less than or equal to 16mm.

The utility model also provides a water purifying device which comprises a machine body and the filter element assembly, wherein the filter element assembly is arranged in the machine body.

The utility model also proposes a flow guide for use in a filter cartridge assembly as described above, the filter cartridge assembly having a second chamber and a second water outlet, the flow guide comprising:

a flow guide tube section having a first sub-flow guide channel; and

The liquid passing pipe section is arranged at one end of the flow guiding pipe section and is provided with a second sub-flow guiding channel communicated with the first sub-flow guiding channel, a third sub-flow guiding channel communicated with the second sub-flow guiding channel is arranged on the outer side wall of the liquid passing pipe section, the third sub-flow guiding channel is used for mounting a valve body, and the flow guiding pipe section and the liquid passing pipe section are integrally arranged; the first sub-diversion channel is communicated with the second sub-diversion channel and is used for diversion of the liquid in the second cavity to the second water outlet.

In an embodiment, an edge of the liquid passing pipe section near one end of the guide pipe section is provided with an extension part, the extension part extends towards one side of the guide pipe section and forms an annular mounting groove with the liquid passing pipe section and the guide pipe section in a surrounding manner, and the length of the extension part along the axial direction of the guide piece is smaller than the length of the guide pipe section.

In an embodiment, the depth of the third sub-diversion channel is greater than the thickness of the pipe wall of the liquid passing pipe section;

The filter element assembly comprises a shell, a flow guide piece, a cylinder body, a first filter piece and a second filter piece, wherein the flow guide piece is arranged in a containing cavity of the shell, the flow guide piece is of an integrated structure and is internally provided with a flow guide channel, the cylinder body is arranged in the containing cavity and is sleeved outside the flow guide piece, a first cavity is formed between the inner wall of the cylinder body and the outer wall of the flow guide piece, the first cavity is mutually isolated from the flow guide channel, a second cavity is formed between the outer wall of the cylinder body and the inner wall of the shell, the second cavity is communicated with the flow guide channel, the first filter piece is arranged in the first cavity, the second filter piece is arranged in the second cavity, and when water flows into the first cavity from a first water inlet and is filtered by the first filter piece, the filtered water can flow out from a first water outlet; after water flows into the second cavity from the second water inlet and is filtered through the second filter element, filtered water can directly flow out of the second water outlet along the flow guide channel, the first cavity is mutually isolated from the flow guide channel, the first cavity and the second cavity are separated, the first cavity and the second cavity are mutually independent and are not mutually influenced in the filtering process, the reliability of the filter element assembly is ensured, the first filter element and the second filter element are combined in one shell, the filter element assembly is favorably simplified to be installed in a pipeline of the water purifying device, the water purifying device provided with the filter element assembly occupies smaller space, and the purpose of replacing two filter elements can be achieved by replacing one filter element assembly, so that the replacing times of the filter element assembly can be reduced. And, because the second cavity is by the outer wall of barrel and the inner wall of shell formation, therefore the length of second cavity in the axial direction of barrel is longer, and the second filter that sets up in the second cavity can have longer distance in the axial direction of barrel, has so increased the length when water passes the second filter and has filtered, has improved the filter effect of second filter to water. In addition, the water flow channel is directly formed by the water guide piece of the integrated structure, so that the water flow channel in the filter element assembly can directly guide liquid in the second cavity to the second water outlet, and the water flow channel in the filter element assembly is easy to form, thereby being beneficial to simplifying the internal structure of the filter element assembly and reducing the assembly difficulty and the manufacturing cost of the filter element assembly.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a first embodiment of a filter element assembly of the present utility model;

FIG. 2 is a schematic diagram of the structure of FIG. 1 after being disassembled;

FIG. 3 is a cross-sectional view of the structure of FIG. 1;

FIG. 4 is an enlarged view of FIG. 3 at A;

FIG. 5 is a schematic illustration of water flow when the valve body of FIG. 3 is not conducting;

FIG. 6 is a schematic illustration of water flow when the valve body of FIG. 3 is on;

FIG. 7 is a schematic view of the flow guide member in FIG. 3;

FIG. 8 is a cross-sectional view of the structure of FIG. 7;

FIG. 9 is a schematic view of the third filter element of FIG. 3;

FIG. 10 is a cross-sectional view of the structure of FIG. 9;

FIG. 11 is a schematic view of the cartridge of FIG. 3;

FIG. 12 is a cross-sectional view of the structure of FIG. 11;

FIG. 13 is a cross-sectional view of the fourth filter element of FIG. 3;

FIG. 14 is a cross-sectional view of a second embodiment of a filter cartridge assembly of the present utility model;

FIG. 15 is a cross-sectional view of a third embodiment of a filter cartridge assembly of the present utility model;

fig. 16 is a cross-sectional view of a fourth embodiment of a filter cartridge assembly of the present utility model.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a filter element assembly, a water purifying device comprising the filter element assembly and a flow guide piece applied to the filter element assembly.

Referring to fig. 1-3, in one embodiment of the filter cartridge assembly 10 of the present utility model, the filter cartridge assembly 10 includes a housing 100, a flow guide member 200, a cylinder 300, a first filter member 400, and a second filter member 500, the housing 100 having a receiving chamber 110 and a first water inlet 120, a first water outlet 130, a second water inlet 140, and a second water outlet 150 in communication with the receiving chamber 110; the flow guiding member 200 is disposed in the accommodating cavity 110, and the flow guiding member 200 is of an integral structure and has a flow guiding channel 201 formed therein; the cylinder 300 is arranged in the accommodating cavity 110 and sleeved outside the guide piece 200, a first chamber 101 is formed between the inner wall of the cylinder 300 and the outer wall of the guide piece 200, the first chamber 101 is isolated from the guide channel 201, a second chamber 102 is formed between the outer wall of the cylinder 300 and the inner wall of the shell 100, the second chamber 102 is communicated with the guide channel 201, the first water inlet 120 and the first water outlet 130 are communicated with the first chamber 101, the second water inlet 140 is communicated with the second chamber 102, and the second water outlet 150 is communicated with the guide channel 201; the first filter 400 is disposed in the first chamber 101; a second filter 500 is disposed within the second chamber 102.

It will be appreciated that the housing 100 has a receiving chamber 110 formed therein, and the receiving chamber 110 is used to receive the first filter member 400 and the second filter member 500, and the housing 100 may be provided in a rectangular parallelepiped structure or a cylindrical structure in order to secure a large size and a large filtering path of the first filter member 400 and the second filter member 500. Of course, in other embodiments, the housing 100 may have a special-shaped structure, so that the housing 100 can be embedded with the internal structure of the water purifying device, thereby achieving the purpose of saving space. Of course, the first filter 400 may be disposed in the first chamber 101 and sleeved outside the flow guiding member 200; the second filter 500 may be disposed in the second chamber 102 and sleeved outside the cylinder 300.

Further, the first water inlet 120 and the second water inlet 140 may be disposed at the same end of the casing 100, and may be disposed at different ends of the casing 100; the first water outlet 130 and the second water outlet 150 may be disposed at the same end of the housing 100, or may be disposed at different ends of the housing 100, which is not limited herein. In this embodiment, the first water inlet 120, the first water outlet 130, the second water inlet 140 and the second water outlet 150 are disposed at the same end of the housing 100. Specifically, an installation part is disposed at one end of the casing 100, the installation part may protrude from the end surface of the casing 100, and of course, the installation part may also be disposed in the casing 100, and the installation part is formed with a first water inlet 120, a first water outlet 130, a second water inlet 140 and a second water outlet 150, which are communicated with the accommodating cavity 110, and is used for connecting a water supply and drainage structure of the water purifying device.

The mounting portion and the housing 100 may be integrally formed, and the end portion of the housing 100 forms the mounting portion, so that the housing 100 has better tightness and lower manufacturing cost. Or the installation part and the shell 100 can be mutually independent components, the installation part is installed on the shell 100 through the locking piece, or the installation part is clamped in the shell 100 and is in sealing connection with the shell 100, so that the shell 100 and the installation part are independent parts, and the assembly of the parts of the filter element assembly 10 is facilitated.

Further, the flow guiding member 200 is of an integral structure, and the flow guiding channel 201 is formed inside the flow guiding member 200, that is, the flow guiding member 200 is a single part, and the flow guiding channel 201 is directly formed on the flow guiding member 200 itself. The baffle 200 may be integrally injection molded, integrally stamped, or otherwise formed, as is specifically not limited herein. The stable structure of the diversion channel 201 formed by the single component is also beneficial to reducing the volume of the diversion piece 200 in the cylinder 300, thereby increasing the occupied space of the first filter piece 400 in the cylinder 300, and the diversion piece 200 in the scheme has simple structure and easy manufacture, and is beneficial to simplifying the internal structure of the filter element assembly 10.

In addition, two independent filter pieces, namely a first filter piece 400 and a second filter piece 500, are arranged in the accommodating cavity 110, the guide piece 200, the cylinder 300 and the shell 100 are mutually matched to separate the first filter piece 400 and the second filter piece 500, and the first filter piece 400 and the second filter piece 500 can realize the same or different filter functions.

The filter element assembly 10 comprises a shell 100, a guide piece 200, a cylinder 300, a first filter piece 400 and a second filter piece 500, wherein the guide piece 200 is arranged in a containing cavity 110 of the shell 100, the guide piece 200 is of an integrated structure and internally provided with a guide channel 201, the cylinder 300 is arranged in the containing cavity 110 and sleeved outside the guide piece 200, a first chamber 101 is formed between the inner wall of the cylinder 300 and the outer wall of the guide piece 200, the first chamber 101 is isolated from the guide channel 201, a second chamber 102 is formed between the outer wall of the cylinder 300 and the inner wall of the shell 100, the second chamber 102 is communicated with the guide channel 201, the first filter piece 400 is arranged in the first chamber 101, the second filter piece 500 is arranged in the second chamber 102, and when water flows into the first chamber 101 from a first water inlet 120 and is filtered by the first filter piece 400, the filtered water can flow out from a first water outlet 130; when water flows into the second chamber 102 from the second water inlet 140 and is filtered by the second filter piece 500, the filtered water can directly flow out from the second water outlet 150 along the diversion channel 201, the first chamber 101 and the diversion channel 201 are isolated from each other, the first chamber 101 and the second chamber 102 are separated, the first chamber 101 and the second chamber 102 are mutually independent, the filtering processes in the first chamber and the second chamber 102 cannot be mutually influenced, the reliability of the filter element assembly 10 is ensured, the first filter piece 400 and the second filter piece 500 are combined in one shell 100, the simplification of the pipeline of the filter element assembly 10 for installing the filter element assembly 10 in a water purifying device is facilitated, the water purifying device for installing the filter element assembly 10 occupies smaller space, and the purpose of replacing two filter pieces can be achieved by replacing one filter element assembly 10, so that the replacing times of the filter element assembly 10 can be reduced. In addition, since the second chamber 102 is formed by the outer wall of the cylinder 300 and the inner wall of the housing 100, the length of the second chamber 102 in the axial direction of the cylinder 300 is longer, and the second filter 500 disposed in the second chamber 102 can have a longer distance in the axial direction of the cylinder 300, thus increasing the length of the water when filtered through the second filter 500, and improving the filtering effect of the second filter 500 on the water. In addition, the flow guiding channel 201 is directly formed by the flow guiding piece 200 with an integral structure, so that the flow guiding channel 201 of the flow guiding piece 200 can directly guide the liquid in the second chamber 102 to the second water outlet 150, and the water flow channel in the filter element assembly 10 is easy to form, thus being beneficial to simplifying the internal structure of the filter element assembly 10 and reducing the assembly difficulty and manufacturing cost of the filter element assembly 10.

Referring to fig. 3 to 6, in one embodiment, a first flow channel 410 is formed between the first filter 400 and the inner wall of the cylinder 300, a second flow channel 420 is formed between the first filter 400 and the outer wall of the flow guiding member 200, the first flow channel 410 is communicated with one of the first water inlet 120 and the first water outlet 130, and the second flow channel 420 is communicated with the other of the first water inlet 120 and the first water outlet 130.

It will be appreciated that the first flow passage 410 and the second flow passage 420 are in communication through the first filter 400, the first flow passage 410 may be in communication with the first water inlet 120, while the second flow passage 420 is in communication with the first water outlet 130; or the first flow path 410 communicates with the first water outlet 130, while the second flow path 420 communicates with the first water inlet 120. The first flow channel 410 and the second flow channel 420 are located in the first chamber 101, the first chamber 101 is isolated from the diversion channel 201, the first chamber 101 is isolated from the second chamber 102, and water in the first chamber 101 is isolated from water in the second chamber 102 and the diversion channel 201, so that the same or different filtering effects can be achieved through the first filtering piece 400 and the second filtering piece 500, and different filtering modes of the filter element assembly 10 can be ensured. For example, domestic water may be filtered through the first filter 400 and potable water may be filtered through the second filter 500.

Referring to fig. 5, in one embodiment of the present application, the water in the accommodating chamber 110 flows as follows:

the first water inlet 120 receives external tap water, the tap water flows into the first flow channel 410 after being filtered by the third filter 600 and filtered by the first filter 400 to obtain domestic water, the domestic water flows to the first water outlet 130 along the second flow channel 420, and then the domestic water flows out of the first water outlet 130 (in the direction indicated by the thin line arrow in fig. 5) for a user to use. The structure of the third filter 600 will be described in detail later.

The second water inlet 140 receives pure water filtered by the reverse osmosis filter element, the pure water flows through the second filter element 500 in the second chamber 102 to be filtered, the filtered pure water flows into the fourth filter element 700, the pure water flows through the fourth filter element 700 to obtain drinking water, and the drinking water flows to the second water outlet 150 along the diversion channel 201 and flows out (in the direction indicated by the bold arrow in fig. 5) for drinking by a user. The structure of the fourth filter element 700 will be described in detail later.

It should be noted that, in the process of circulating water in the accommodating cavity 110, since the first chamber 101 is isolated from the diversion channel 201, the first chamber 101 and the second chamber 102 are separately disposed, so that the filtering process of water in the first chamber 101 and the filtering process of water in the second chamber 102 cannot be affected mutually, a user can select the first filtering piece 400 or the second filtering piece 500 to filter to obtain filtered water according to the requirement of the user, and the user can also inject water into the first water inlet 120 and the second water inlet 140 at the same time, so that the first filtering piece 400 and the second filtering piece 500 work at the same time.

Referring to fig. 3, 4, 9 and 10, in an embodiment, the filter element assembly 10 further includes a third filter element 600, the third filter element 600 is disposed in the first chamber 101 for filtering the water flowing into the first chamber 101, and the first water inlet 120, the third filter element 600 and the first filter element 400 are sequentially arranged along the axial direction of the housing 100.

It can be appreciated that the third filter 600 is disposed in the first chamber 101, and the first water inlet 120, the third filter 600 and the first filter 400 are sequentially arranged along the axial direction of the housing 100, that is, the water flowing into the first chamber 101 from the first water inlet 120 is filtered by the third filter 600 and then flows through the first filter 400 for filtration, so that the filtering effect of the filter element assembly 10 can be improved.

In addition, the third filter 600 may have a first channel 610, and the first channel 610 may be connected to the first water inlet 120 and the first flow channel 410, or the first channel 610 may be connected to the first water inlet 120 and the second flow channel 420, that is, the water filtered by the third filter 600 may flow into the first flow channel 410 or may flow into the second flow channel 420 first, which is not limited herein, and only the third filter 600 and the first filter 400 may be required to sequentially filter the water flowing into the first chamber 101.

The third filter element 600 is disposed at the water inlet end of the first filter element 400, which is advantageous for ensuring that the first filter element 400 has a sufficient thickness, because when the first filter element 400 is rolled by PP cotton or rolled by PP cotton and carbon fiber, the first filter element 400 needs a certain thickness to maintain a good filtering effect, so as to meet the filtering requirement of the filter element assembly 10. Of course, in other embodiments, the third filter 600 may be made of silicon phosphor.

In an embodiment, the third filter 600 is sleeved outside the flow guiding member 200, and the third filter 600 has a first channel 610, where the first channel 610 communicates with the first water inlet 120 and the first flow channel 410.

It can be appreciated that the third filter element 600 is disposed in an annular shape, the third filter element 600 is disposed in the first chamber 101 and sleeved outside the flow guiding element 200, the third filter element 600 fills the annular space between the flow guiding element 200 and the cylinder 300, so that the water flowing into the first chamber 101 from the first water inlet 120 flows through the third filter element 600 for filtration and then flows into the first flow channel 410, thereby ensuring the filtering effect of the third filter element 600. In addition, the extending direction of the first channel 610 is not limited herein, and the extending direction of the first channel 610 includes, but is not limited to: it is also possible to form an angle with the axial direction of the housing 100 by extending along the axial direction of the housing 100, and in this embodiment, the first channel 610 extends along the axial direction of the housing 100, so that the first channel 610 is advantageously formed on the third filter element 600, so as to simplify the structure of the third filter element 600.

In an embodiment, the third filter 600 includes a first filter housing 620 and a first filter unit, the first filter housing 620 has a first filter cavity 630 disposed in a ring shape, and a first water inlet 640 and a first water outlet 650 in communication with the first filter cavity 630, the first filter unit is disposed in the first filter cavity 630, and the first water inlet 640, the first filter cavity 630 and the first water outlet 650 are sequentially communicated to form the first channel 610.

It will be appreciated that the first filter element fills the first filter chamber 630 in an annular arrangement such that the first filter element is also in an annular arrangement. The water entering the first chamber 101 flows into the first filter chamber 630 from the first water inlet 640, flows out of the first water outlet 650 after being filtered by the first filter unit, and the water flowing out of the third filter 600 flows into the first flow passage 410, flows out of the first water outlet 130 from the second flow passage 420 after being filtered by the first filter 400, and is discharged. The number of the first water inlet holes 640 and the number of the first water outlet holes 650 may be plural, and the first water inlet holes 640 and the first water outlet holes 650 may be distributed on the first filter housing 620 along the circumferential direction, so as to increase the water inlet speed and the water outlet speed of the third filter 600.

Referring to fig. 9 and 10, in an embodiment, the first filter casing 620 includes a first upper cover casing 660 and a first lower cover casing 670 that are annularly disposed, the first upper cover casing 660 is detachably covered on the first lower cover casing 670 to enclose and form the first filter cavity 630 that is annularly disposed, a top wall of the first upper cover casing 660 is provided with a plurality of first water inlet holes 640 that extend radially along the top wall and are distributed circumferentially, and a bottom wall of the first lower cover casing 670 is provided with a plurality of first water outlet holes 650 that extend radially along the bottom wall and are distributed circumferentially.

It will be appreciated that the manner in which the first upper cover 660 is removably disposed over the first lower cover 670 includes, but is not limited to: threaded connection, or snap-fit connection. The first upper cover case 660 and the first lower cover case 670 are all in an annular arrangement, so that the annularly arranged first filter chamber 630 is easily formed and the first filter unit is conveniently and rapidly installed.

Further, the first water inlet 640, the first filter chamber 630 and the first water outlet 650 may be sequentially arranged along the axial direction of the housing 100, and the first water inlet 640 is located above the first water outlet 650, so that water in the first chamber 101 flows through the first filter unit from the first water inlet 640 under the action of gravity and then flows out of the first water outlet 650, which is beneficial to improving the smoothness of water flowing through the first filter unit.

In addition, the plurality of first water inlet holes 640 are circumferentially distributed on the top wall of the first upper cover case 660, and each of the first water inlet holes 640 extends along the radial direction of the first filter case 620, so that the water flow is dispersed into a plurality of strands when passing through the plurality of first water inlet holes 640, the plurality of strands of water flows through the first filter units at corresponding positions to flow out of the plurality of first water outlet holes 650 after being filtered, and the plurality of first water outlet holes 650 are circumferentially distributed on the bottom wall of the first lower cover case 670, and each of the first water outlet holes 650 extends along the radial direction of the first filter case 620, i.e., each of the first water inlet holes 640 may be correspondingly arranged with each of the first water outlet holes 650, thus improving the water flow speed and water flow smoothness of the water flowing through the third filter 600.

In an embodiment, the first filter unit may be made of granular activated carbon. The granular activated carbon can play an effective role in filtering the chloroform in the water, and can ensure that the content of the chloroform in the filtered water completely accords with the national standard. Preferably, the length of the granular activated carbon in the axial direction of the casing 100 is not less than 30mm, so that the removal rate of the chloroform content in the water of the third filter element 600 in the filtering process can be ensured to reach more than 95% to meet the national standard.

Referring to fig. 2 and 4, in an embodiment, the filter element assembly 10 further includes an upper end cover 820 disposed in the first chamber 101 and sleeved outside the flow guiding member 200, the upper end cover 820 is disposed at an end of the first filter element 400 near the first water inlet 120, a part of the first filter element 400 is mounted in the upper end cover 820, and the third filter element 600 is supported by the upper end cover 820 in an abutting manner.

It will be appreciated that the upper end cap 820 is disposed within the first chamber 101 proximate one end of the first water inlet 120, the upper end cap 820 mates with the housing 100, and the housing 100 is sealed against the upper end cap 820. The side of the upper end cover 820 facing away from the first water inlet 120 is provided with a mounting groove for mounting the first filter 400 and in an annular arrangement, and one end of the first filter 400 close to the first water inlet 120 is mounted in the mounting groove so as to realize quick positioning and mounting of the first filter 400 and ensure the stability of the first filter 400 mounted in the first chamber 101.

Further, the third filter 600 is sleeved outside the upper end cover 820, the upper end cover 820 is provided with a supporting bar, and one end of the third filter 600 close to the first filter 400 is supported on the supporting bar in an abutting manner, so that a liquid filtering gap is formed between the third filter 600 and the upper end cover 820. So arranged, the water filtered by the third filter 600 can flow from the gap into the first flow path 410 to ensure the smoothness of the water flowing through the third filter 600 and the first filter 400.

Referring to fig. 3 and 13, in an embodiment, the filter element assembly 10 further includes a fourth filter element 700 disposed in the second chamber 102, the fourth filter element 700 is disposed at an end of the cylinder 300 away from the second water inlet 140 and sleeved outside the cylinder 300, the fourth filter element 700 has a second channel 710, the second channel 710 communicates between the second chamber 102 and the flow guiding channel 201, and an end of the fourth filter element 700 near the second water inlet 140 is sealed with an outer peripheral wall of the cylinder 300 by a sealing element in an abutting manner.

It can be appreciated that by providing the fourth filter 700 outside the cartridge 300, water can enter the second channel 710 and be filtered by the fourth filter 700 after entering the second chamber 102 and being filtered by the second filter 500, and the filtered water flows out of the diversion channel 201, thus improving the filtering effect of the filter element assembly 10.

The second filter 500 may be made of granular activated carbon. When the granular activated carbon has a sufficient length in the axial direction of the housing 100, it can effectively filter chloroform in water, and it can ensure that the chloroform content of the filtered water completely meets the national standard. Preferably, the length of the granular activated carbon in the axial direction of the casing 100 is not less than 30mm, so that the removal rate of the chloroform content in the water of the second filter 500 in the filtering process can be ensured to reach more than 95% to meet the national standard.

Further, the fourth filter 700 is a post filter. For example, when the second filter member 500 is made of granular activated carbon, the fourth filter member 700 may be made of a microfiltration membrane, such as a folded multi-layer microfiltration membrane; or the fourth filter 700 may be made of PP cotton that intercepts carbon powder, which is not particularly limited herein. The fourth filter 700 is used to filter the carbon powder of the residual granular activated carbon in the water to prevent the water flowing out of the filter element assembly 10 from having black carbon powder.

Further, the end of the fourth filter 700 near the second water inlet 140 is in abutting sealing with the outer peripheral wall of the cylinder 300 through a sealing member, and the sealing member may be mounted on the fourth filter 700 or may be mounted on the outer wall of the cylinder 300, which is not limited herein. The sealing member can be a sealing ring, so that the sealing performance between the fourth filter member 700 and the cylinder 300 is ensured by arranging the sealing ring, the influence on the filtering effect of the second filter member 500 and the fourth filter member 700 caused by the clearance between the fourth filter member 700 and the cylinder 300 is avoided, and the reliability of the filter element assembly 10 is improved.

Referring to fig. 3, 11 and 12, in an embodiment, a first annular boss 310 is disposed on an outer wall of the cylinder 300 near one end of the fourth filter element 700, and a first annular clamping groove 320 for clamping the sealing element is disposed on the first annular boss 310.

It can be appreciated that by providing the first annular boss 310 on the outer wall of the barrel 300, not only is the structural strength of the barrel 300 enhanced, but the first annular clamping groove 320 is also easily formed on the first annular boss 310, so as to simplify the manner of clamping and fixing the sealing member, and further simplify the internal structure of the filter element assembly 10.

Referring to fig. 3 and 13, in an embodiment, the fourth filter member 700 includes a second filter housing 720 and a second filter unit 730, the second filter housing 720 has a second filter cavity with an annular shape, a second water inlet 740 and a second water outlet 750 communicating with the second filter cavity, the second filter unit 730 is disposed in the second filter cavity, and the second water inlet 740, the second filter cavity and the second water outlet 750 are sequentially communicated to form the second channel 710.

It can be understood that the second filter unit 730 in this embodiment is filled in the second filter cavity to be disposed in a ring shape, the second water inlet 740 is disposed on the outer sidewall of the second filter housing 720, and the second water outlet 750 is disposed on the inner sidewall of the second filter housing 720. So arranged, water can flow through the second filter unit 730 in the radial direction of the cartridge 300 for filtering. The second filter housing 720 includes a second upper cover housing 760 and a second lower cover housing 770, where the second upper cover housing 760 is detachably covered on the second lower cover housing 770 to enclose a second filter cavity formed in an annular shape. In addition, the second filter housing 720 is disposed in a ring shape, and a gap is formed between the inner sidewall of the second filter housing 720 and the outer wall of the cylinder 300, so that the water filtered by the second filter unit 730 can flow into the gap from the second water outlet 750, and then can flow into the diversion channel 201.

In an embodiment, a first flow channel 410 is formed between the first filter 400 and the inner wall of the cylinder 300, a liquid passage communicating the second channel 710 and the first flow channel 410 is formed by the end of the flow guiding member 200 away from the second water inlet 140 and the housing 100, and a valve body 810 is disposed in the liquid passage and is in unidirectional conduction from the second channel 710 to the first flow channel 410.

It is understood that the first filter 400 may be a pre-filter, a first flow channel 410 is formed between the first filter 400 and the inner wall of the cylinder 300, a second flow channel 420 is formed between the first filter 400 and the outer wall of the flow guiding member 200, and when water flows into the first flow channel 410 from the first water inlet 120, the water flows into the second flow channel 420 after being filtered by the first filter 400, and flows out from the first water outlet 130.

Further, the liquid-filtering channel is communicated with the second channel 710 and the first flow channel 410, when the valve body 810 in the liquid-filtering channel is in unidirectional conduction, water in the second channel 710 can flow to the first flow channel 410 after passing through the valve body 810, that is, when the valve body 810 is in conduction, the second water inlet 140 supplies water continuously to the second chamber 102, so that the water can be filtered by the second filter 500 and the fourth filter 700 in sequence, and the filtered water can flow into the first flow channel 410 under the action of the liquid-filtering channel and the valve body 810, that is, flows into the water inlet end of the first filter 400, and flows out of the first water outlet 130 after being filtered by the first filter 400. That is, the solution is to set the liquid passage and the valve body 810 which is connected in one way, so that the water flowing into the second chamber 102 can be filtered by the second filter 500, the fourth filter 700 and the first filter 400 in sequence, which not only can improve the filtering effect, but also can use the pure water filtered by the fourth filter 700 to flush the water inlet end of the first filter 400, that is, replace the raw water on the raw water side of the first filter 400 with the pure water filtered by the fourth filter 700, and reduce the TDS concentration on the raw water side when the first filter 400 is used, so as to avoid the problem that the TDS of the first cup of water output after the first filter 400 of the filter element assembly 10 is not used for a long time is raised, that is, reduce the TDS concentration of the first cup of water.

Referring to fig. 6, a process of flowing water when the valve body 810 is turned on in one direction will be described, when water flows into the second chamber 102 from the second water inlet 140, the water is filtered by the second filter 500, the filtered water flows into the second channel 710, is filtered by the fourth filter 700, the filtered water flows into the liquid-passing channel, flows into the first channel 410 after passing through the valve body 810, and the pure water in the first channel 410 flows into the second channel 420 after being filtered by the first filter 400, and flows out through the first water outlet 130. The pure water filtered by the fourth filter 700 can flow into the first chamber 101 to wash the raw water side of the first filter 400, so that the filtering effect of the first filter 400 can be improved and the TDS concentration of the first cup of water at the first water outlet 130 can be reduced.

Referring to fig. 3, 5 and 6, in an embodiment, the liquid passing channel includes a third channel 103 and a fourth channel 202, the third channel 103 is disposed on a bottom wall of the accommodating cavity 110 away from the first water inlet 120, the fourth channel 202 is disposed on the guide member 200, the second channel 710, the third channel 103, the fourth channel 202 and the first channel 410 are sequentially communicated, and the valve body 810 is disposed in the fourth channel 202.

It will be appreciated that the third channel 103 is provided on the bottom wall of the housing cavity 110, so that the third channel 103 is easy to machine; the fourth channel 202 is disposed on the flow guiding member 200, so that the fourth channel 202 is easy to process and form, and is beneficial to be communicated with the third channel 103, thus being beneficial to simplifying the internal structure of the filter element assembly 10. The third channel 103 is communicated with the second channel 710 of the fourth filter element 700 and the fourth channel 202 on the flow guiding element 200, when the valve body 810 is in unidirectional conduction, water flow can smoothly and sequentially flow through the second filter element 500 and the fourth filter element 700, and then flow into the first channel 410 after being filtered, so as to wash the water inlet end of the first filter element 400. In addition, the valve body 810 is disposed in the fourth channel 202 of the flow guiding element 200, and when assembling, the valve body 810 can be installed first, and then the flow guiding element 200 is installed in the accommodating cavity 110, so that the convenience in installing the valve body 810 and the flow guiding element 200 is improved.

Referring to fig. 5 to 8, in an embodiment, the third channel 103 includes a plurality of liquid passing grooves 104 disposed on a bottom wall of the accommodating cavity 110, the fourth channel 202 includes a second sub-diversion channel 221 and a third sub-diversion channel 222 sequentially communicated with the liquid passing grooves 104, the valve body 810 is disposed in the third sub-diversion channel 222, and when the water pressure in the second sub-diversion channel 221 is greater than the water pressure in the first flow channel 410, the valve body 810 unidirectionally conducts the water path from the second sub-diversion channel 221 to the first flow channel 410.

It is understood that the plurality of liquid passing grooves 104 may extend along the radial direction of the cylinder 300 on the bottom wall of the accommodating cavity 110 and be circumferentially distributed, and the second sub-diversion channel 221 and the third sub-diversion channel 222 are disposed at an end of the diversion member 200 away from the first water outlet 130, so as to communicate the plurality of liquid passing grooves 104 with the first flow channel 410. The second sub-diversion channel 221 and the third sub-diversion channel 222 are further described in detail below, and are not described herein. The valve body 810 is abutted against the inner wall of the third sub-diversion channel 222 to ensure the stability of unidirectional conduction of the valve body 810.

Fig. 5 is a schematic diagram of water flow when the valve body 810 is not conducting, and fig. 6 is a schematic diagram of water flow when the valve body 810 is conducting. The water purification device comprises a first water tap and a second water tap, the filter element assembly 10 is applied to the water purification device, the first water outlet 130 is communicated with the first water tap, and the second water outlet 150 is communicated with the second water tap; when the second tap is opened, the second water outlet 150 is opened, the water in the second chamber 102 flows through the diversion channel 201 to the second water outlet 150 for discharge, the water pressure in the second sub-diversion channel 221 is smaller than the water pressure in the first flow channel 410, at this time, the valve body 810 is closed, and the water flowing into the second chamber 102 flows out along the diversion channel 201 to the second water outlet 150 after being filtered by the second filter 500 and the fourth filter 700 (i.e. flows out from the second tap (as indicated by the bold arrow in fig. 5).

When the second faucet is closed, the second water outlet 150 is closed, the water pressure in the diversion channel 201 increases, that is, the water pressure in the second sub-diversion channel 221 increases, until the water pressure in the second sub-diversion channel 221 is greater than the water pressure in the first flow channel 410, the valve body 810 which is in one-way conduction is opened, and at this time, the water flowing into the second chamber 102 flows through the second filter 500, the second channel 710, the liquid passing trough 104, the second sub-diversion channel 221, the third sub-diversion channel 222 and the valve body 810 in sequence, and then flows into the first flow channel 410, so as to flush the water inlet end of the first filter 400 (as indicated by the bold arrow in fig. 6).

Referring to fig. 3, 4, 11 and 12, in an embodiment, the filter element assembly 10 further includes an interception member 830 disposed in the second chamber 102 and used for blocking the second filter member 500, the interception member 830 is annular and disposed between the second filter member 500 and the second water inlet 140, a second annular boss 330 is disposed on an outer wall of the cylinder 300 near one end of the second water inlet 140, and the interception member 830 is sleeved on the cylinder 300 and is supported on the second annular boss 330 in an abutting manner.

It will be appreciated that when the second filter 500 is made of granular activated carbon, the granular activated carbon is filled in the second chamber 102, the lower end of the second chamber 102 is blocked by the fourth filter 700, so that the granular activated carbon is limited, and the upper end of the second chamber 102 also needs to be limited, so in this embodiment, the blocking member 830 is annular and is disposed between the second filter 500 and the second water inlet 140, so as to block the granular activated carbon of the second filter 500 and prevent the granular activated carbon from entering the second water inlet 140. The cylinder 300 is provided with a second annular boss 330 which is annularly arranged, the interception member 830 is abutted and supported on the second annular boss 330 of the cylinder 300, the inner side wall of the interception member 830 is abutted with the outer wall of the cylinder 300, and the outer side wall of the interception member 830 is abutted with the inner wall of the shell 100. The blocking member 830 has a plurality of openings extending axially of the housing 100 and circumferentially distributed about the axis. In addition, a filter screen may be provided at the opening of the interceptor member 830 to block smaller granular activated carbon from passing through the opening.

Referring to fig. 3, 7 and 8, in one embodiment, the flow guide member 200 includes a flow guide pipe section 210 and a liquid passing pipe section 220, wherein the flow guide pipe section 210 has a first sub-flow guide channel 211 communicating with the second water outlet 150; the liquid-passing pipe section 220 is disposed at one end of the flow-guiding pipe section 210 away from the second water outlet 150, the liquid-passing pipe section 220 has a second sub-flow-guiding channel 221 that communicates with the second chamber 102 and the first sub-flow-guiding channel 211, a third sub-flow-guiding channel 222 that communicates with the second sub-flow-guiding channel 221 is disposed on an outer sidewall of the liquid-passing pipe section 220, the third sub-flow-guiding channel 222 is used for mounting the valve body 810, and the flow-guiding pipe section 210 and the liquid-passing pipe section 220 are integrally disposed.

It will be appreciated that the outer diameter of the flow guiding tube section 210 is smaller than the outer diameter of the liquid passing tube section 220, the flow guiding tube section 210 is disposed on the liquid passing tube section 220 and located between the second water outlet 150 and the liquid passing tube section 220, the flow guiding tube section 210 and the liquid passing tube section 220 are integrally disposed to form the flow guiding channel 201, the flow guiding tube section 210 and the liquid passing tube section 220 may be integrally injection molded, or integrally punched and molded, or otherwise, so that the flow guiding member 200 is a single part, the structure of the flow guiding member 200 of the single part is stable, and correspondingly, the structure of the flow guiding channel 201 formed by the flow guiding member 200 is also stable. The first sub-diversion channel 211 is a part of the diversion channel 201, the second sub-diversion channel 221 is also a part of the diversion channel 201, when the valve body 810 is not arranged on the diversion piece 200, the diversion channel 201 comprises the first sub-diversion channel 211 and the second sub-diversion channel 221, and the diversion channel 201 is used for diversion of the liquid in the second chamber 102 to the second water outlet 150; when the valve body 810 is disposed on the flow guiding element 200, the flow guiding channel 201 includes a first sub-flow guiding channel 211, a second sub-flow guiding channel 221 and a third sub-flow guiding channel 222, and if the valve body 810 is closed, the flow guiding channel 201 is used for guiding the liquid in the second chamber 102 to the second water outlet 150; if the valve body 810 is opened, the flow guiding channel 201 is used for guiding the liquid in the second chamber 102 between the first filter 400 and the inner wall of the cylinder 300, that is, the flow guiding channel 201 is used for guiding the liquid in the second chamber 102 to the first flow channel 410. Therefore, the guide channel 201 is directly formed by the guide piece 200, which is beneficial to simplifying the internal structure of the filter element assembly 10 and reducing the assembly difficulty and manufacturing cost of the filter element assembly 10.

In an embodiment, an edge of the liquid passing pipe section 220 near one end of the guide pipe section 210 is provided with an extension portion 230, the extension portion 230 extends toward one side of the guide pipe section 210 and forms an annular mounting groove 240 with the liquid passing pipe section 220 and the guide pipe section 210 for mounting the first filter element 400, and a length of the extension portion 230 along an axial direction of the guide element 200 is smaller than a length of the guide pipe section 210. It can be appreciated that the first filter 400 is sleeved outside the guide pipe section 210 of the guide member 200, and the end of the first filter 400 away from the first water inlet 120 is installed in the annular installation groove 240, so as to realize quick positioning and installation of the first filter 400, and ensure the stability of the first filter 400 installed in the first chamber 101.

In one embodiment, the first filter 400 may be made of PP cotton, which may be rolled, and has a hollow structure inside. In other embodiments, the first filter 400 may be a PP cotton and carbon fiber rolled together, which is not limited herein, and is only required to be a pre-filter.

In one embodiment, the inner diameter of the permeate tube section 220 is greater than the outer diameter of the flow tube section 210. By the arrangement, the outside diameter of the flow guide pipe section 210 is smaller, the flow guide pipe section 210 occupies less space in the cylinder 300, the space of the first chamber 101 is increased, the filling quantity of the first filter 400 can be increased, namely the occupancy rate of the first filter 400 in the cylinder 300 can be increased, and the filtering effect of the filter element assembly 10 is improved.

Referring to fig. 8, in an embodiment, the maximum inner diameter of the pipe section 210 is D1, and the D1 satisfies: d1 is more than or equal to 8mm and less than or equal to 16mm. By defining the maximum value of the inner diameter of the guide pipe section 210, the width of the guide pipe section 210 can be defined, namely the width, the volume and the space occupied in the cylinder 300 of the guide pipe section 210 are defined, the guide pipe section 210 occupies less space on the premise of meeting the smooth flow of water flow, the volume of the guide pipe section 210 is smaller, the occupancy rate of filter materials in the filter element assembly 10 is improved, and the filtering effect of the filter element assembly 10 is improved. The value of D1 may be 8mm, or 10mm, or 12mm, or 14mm, or 16mm, etc., and is specifically not limited herein.

Referring to fig. 1 to 3, in an embodiment, the housing 100 includes a housing body 160 and a housing cover 170, the housing cover 170 is detachably covered on the housing body 160, one end of the housing cover 170 has an opening, a filter element interface member 180 is disposed at the opening, a first water inlet 120, a first water outlet 130, a second water inlet 140 and a second water outlet 150 that are communicated with the accommodating cavity 110 are disposed on the filter element interface member 180, the first water inlet 120 and the first water outlet 130 are communicated with the first chamber 101, and the second water inlet 140, the second chamber 102, the flow guiding channel 201 and the second water outlet 150 are sequentially communicated. Further, a first filter 400 is provided in the first chamber 101, and a second filter 500 is provided in the second chamber 102. The arrangement is such that the first water inlet 120, the first water outlet 130, the second water inlet 140 and the second water outlet 150 are provided at the same end of the housing 100, and when water flows into the first chamber 101 from the first water inlet 120 and is filtered by the first filter 400, the filtered water can flow out from the first water outlet 130; when water flows into the second chamber 102 from the second water inlet 140 and is filtered by the second filter 500, the water can flow into the diversion channel 201 and then flow out from the second water outlet 150, the first chamber 101 and the diversion channel 201 are isolated from each other, the first chamber 101 and the second chamber 102 are independent from each other, the filtering processes in the first chamber and the second chamber 102 are not affected each other, and the reliability of the filter element assembly 10 is ensured.

Referring to fig. 3 and 14, the cartridge assembly of fig. 14 is shown without a third filter member as compared to the cartridge assembly of fig. 3.

Referring to fig. 3 and 15, the cartridge assembly of fig. 15 is shown without a one-way valve body as compared to the cartridge assembly of fig. 3.

Referring to fig. 3 and 16, the cartridge assembly of fig. 16 is not provided with a third filter member and is not provided with a valve body in unidirectional flow communication, as compared to the cartridge assembly of fig. 3. It can be seen that the internal structure of the filter element assembly of the present application can be variously combined, and can be specifically set according to the needs.

The utility model also provides a water purifying device, which comprises a machine body and a filter element assembly 10, wherein the filter element assembly 10 is arranged in the machine body, and the specific structure of the filter element assembly 10 refers to the embodiment, and as the water purifying device adopts all the technical schemes of all the embodiments, the water purifying device at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted.

The present utility model also proposes a flow guiding member 200, the flow guiding member 200 is applied to the filter element assembly 10 as described above, and the specific structure of the filter element assembly 10 refers to the above embodiment, and since the flow guiding member 200 adopts all the technical solutions of all the embodiments described above, it has at least all the beneficial effects brought by the technical solutions of the embodiments described above, and will not be described in detail herein.

Referring to fig. 7 and 8, in an embodiment of the flow guide 200 of the present utility model, the flow guide 200 is applied to the filter element assembly 10 (as shown in fig. 1 to 3), the filter element assembly 10 has a second chamber 102 and a second water outlet 150, the flow guide 200 includes a flow guide pipe section 210 and a liquid passing pipe section 220, and the flow guide pipe section 210 has a first sub-flow guide channel 211; the liquid passing pipe section 220 is disposed at one end of the flow guiding pipe section 210, the liquid passing pipe section 220 has a second sub-flow guiding channel 221 that is communicated with the first sub-flow guiding channel 211, a third sub-flow guiding channel 222 that is communicated with the second sub-flow guiding channel 221 is disposed on an outer side wall of the liquid passing pipe section 220, the third sub-flow guiding channel 222 is used for mounting the valve body 810, and the flow guiding pipe section 210 and the liquid passing pipe section 220 are integrally disposed; the first sub-diversion channel 211 and the second sub-diversion channel 221 are communicated for diversion of the liquid in the second chamber 102 to the second water outlet 150.

It will be appreciated that the outer diameter of the flow guide tube section 210 is smaller than the outer diameter of the liquid passing tube section 220, the flow guide tube section 210 is disposed on the liquid passing tube section 220 and between the second water outlet 150 and the liquid passing tube section 220, the flow guide tube section 210 and the liquid passing tube section 220 are integrally disposed, the flow guide tube section 210 and the liquid passing tube section 220 may be integrally injection molded, or integrally formed by stamping, or otherwise, so that the flow guide member 200 is a single part, and the structure of the flow guide member 200 of the single part is stable.

The first sub-diversion channel 211 and the second sub-diversion channel 221 are communicated, so that the liquid in the second chamber 102 is diverted to the second water outlet 150, and the water flow directly circulates through the diversion member 200 of the single part, which is beneficial to simplifying the structure of the diversion member 200 and the internal structure of the filter element assembly 10, thereby reducing the assembly difficulty and the manufacturing cost of the filter element assembly 10.

Referring to fig. 8, in an embodiment, an edge of the liquid passing pipe section 220 near one end of the guide pipe section 210 is provided with an extension portion 230, the extension portion 230 extends toward one side of the guide pipe section 210 and forms an annular mounting groove 240 with the liquid passing pipe section 220 and the guide pipe section 210, and a length of the extension portion 230 along an axial direction of the guide piece 200 is smaller than a length of the guide pipe section 210. It can be appreciated that the annular mounting groove 240 is used for mounting the first filter element 400, the first filter element 400 is sleeved outside the guide pipe section 210 of the guide element 200, and one end of the first filter element 400, which is far away from the second water outlet 150, is mounted in the annular mounting groove 240, so that the first filter element 400 is rapidly positioned and mounted, and the mounting stability of the first filter element 400 is ensured.

In an embodiment, a second annular clamping groove 223 for clamping the sealing member is provided on the outer peripheral wall of the liquid passing pipe section 220, and the second annular clamping groove 223, the third sub-diversion channel 222 and the first sub-diversion channel 211 are sequentially arranged along the axial direction of the diversion member 200. It will be appreciated that by providing the second annular clamping groove 223 to facilitate quick installation and positioning of the seal, stability of the abutting seal of the end of the excess fluid pipe segment 220 remote from the second outlet 150 with the cartridge 300 is ensured.

In addition, the third sub-guide passage 222 may be provided to extend in a radial direction of the guide 200 so as to facilitate the installation of the valve body 810 and the smooth flow of water. The second annular clamping groove 223 is arranged on one side of the third sub-diversion channel 222 away from the second water outlet 150, so that when the sealing element is arranged in the second annular clamping groove 223, water flow in the third sub-diversion channel 222 cannot leak into the first chamber 101, and stability of the filter element assembly 10 is ensured.

In one embodiment, the inner diameter of the permeate tube section 220 is greater than the outer diameter of the flow tube section 210. By the arrangement, the outer diameter of the guide pipe section 210 is smaller, so that the volume of the guide piece 200 is reduced, that is, the guide pipe section 210 occupies less space in the cylinder 300, so that the space of the first chamber 101 is increased, the filling amount of the first filter piece 400 is increased, the occupancy rate of the first filter piece 400 in the cylinder 300 is improved, and the filtering effect of the filter element assembly 10 is improved.

In an embodiment, the depth of the third sub-diversion channel 222 is greater than the thickness of the pipe wall of the liquid passing pipe section 220. The arrangement is such that the third sub-diversion passage 222 has enough space to facilitate the stable installation of the valve body 810 in the third sub-diversion passage 222.

In one embodiment, the maximum diameter of the guide tube section 210 is D1, and the D1 satisfies: d1 is more than or equal to 8mm and less than or equal to 16mm. By defining the maximum value of the inner diameter of the guide pipe section 210, the width of the guide pipe section 210 can be defined, namely the width, the volume and the space occupied in the cylinder 300 of the guide pipe section 210 are defined, the guide pipe section 210 occupies less space on the premise of meeting the smooth flow of water flow, the volume of the guide pipe section 210 is smaller, the occupancy rate of filter materials in the filter element assembly 10 is improved, and the filtering effect of the filter element assembly 10 is improved. The value of D1 may be 8mm, or 10mm, or 12mm, or 14mm, or 16mm, etc., and is specifically not limited herein.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A filter cartridge assembly, comprising:

The first filtering piece is arranged in the first cavity; and

The second filtering piece is arranged in the second cavity.

2. The filter cartridge assembly of claim 1, wherein a first flow passage is formed between the first filter member and the inner wall of the cartridge body, a second flow passage is formed between the first filter member and the outer wall of the flow guide member, the first flow passage is in communication with one of the first water inlet and the first water outlet, and the second flow passage is in communication with the other of the first water inlet and the first water outlet.

3. The filter cartridge assembly of claim 2, further comprising a third filter member disposed within the first chamber for filtering water flowing into the first chamber, the first water inlet, the third filter member, and the first filter member being arranged in sequence along an axial direction of the housing.

4. The filter cartridge assembly of claim 3, wherein the third filter member is disposed about the flow guide member, the third filter member having a first passage, the first passage communicating the first water inlet and the first flow passage.

5. The filter cartridge assembly of claim 4, wherein the third filter element comprises a first filter housing having a first filter cavity in an annular arrangement and a first inlet and a first outlet in communication with the first filter cavity, and a first filter element disposed within the first filter cavity, the first inlet, the first filter cavity, and the first outlet in sequence communicating to form the first passageway.

6. The filter cartridge assembly of claim 5, wherein the first filter housing comprises a first upper housing and a first lower housing disposed in an annular configuration, the first upper housing being removably capped on the first lower housing to enclose the first filter chamber disposed in an annular configuration, the top wall of the first upper housing being provided with a plurality of the first water inlet openings extending radially therealong and circumferentially therearound, and the bottom wall of the first lower housing being provided with a plurality of the first water outlet openings extending radially therearound and circumferentially therearound.

7. The filter cartridge assembly of claim 1, further comprising a fourth filter member disposed within the second chamber, the fourth filter member being disposed at an end of the cartridge body remote from the second water inlet and disposed outside the cartridge body, the fourth filter member having a second passageway, the second passageway communicating with the second chamber and the flow directing passageway, an end of the fourth filter member proximate the second water inlet being sealed against the peripheral wall of the cartridge body by a seal member.

8. The filter cartridge assembly of claim 7, wherein a first annular boss is provided on an outer wall of the cartridge body adjacent one end of the fourth filter element, and a first annular detent is provided on the first annular boss for retaining the seal element.

9. The filter element assembly of claim 7, wherein a first flow passage is formed between the first filter element and the inner wall of the cylinder, wherein a liquid passage communicating the second passage and the first flow passage is formed by the end of the flow guide element away from the second water inlet and the housing, and a valve body which is in one-way conduction from the second passage to the first flow passage is arranged in the liquid passage.

10. The filter cartridge assembly of claim 9, wherein the liquid passage includes a third passage disposed on the bottom wall of the receiving chamber remote from the first water inlet and a fourth passage disposed on the flow guide, the second passage, the third passage, the fourth passage, and the first passage being in communication in sequence, the valve body being disposed within the fourth passage.

11. The filter element assembly of claim 10, wherein the third passageway comprises a plurality of fluid passing grooves formed in the bottom wall of the receiving chamber, the fourth passageway comprises a second sub-diversion passageway and a third sub-diversion passageway in sequential communication with the fluid passing grooves, the valve body is disposed in the third sub-diversion passageway, and the valve body unidirectionally conducts the water path from the second sub-diversion passageway to the first passageway when the water pressure in the second sub-diversion passageway is greater than the water pressure in the first passageway.

12. The filter cartridge assembly of any one of claims 1-11, wherein the flow guide comprises:

13. The filter element assembly according to claim 12, wherein an edge of the flow tube segment adjacent to one end of the flow tube segment is provided with an extension extending toward one side of the flow tube segment and circumscribing the flow tube segment and the flow tube segment to form an annular mounting groove for mounting the first filter element, and a length of the extension along an axial direction of the flow tube segment is less than a length of the flow tube segment.

14. The filter cartridge assembly of claim 12, wherein an inner diameter of the permeate tube section is greater than an outer diameter of the flow tube section;

15. A water purification apparatus comprising a body and a cartridge assembly according to any one of claims 1 to 14, the cartridge assembly being disposed within the body.

16. A flow guide for use with the filter cartridge assembly of any one of claims 1 to 11, wherein the filter cartridge assembly has a second chamber and a second water outlet, the flow guide comprising:

a flow guide tube section having a first sub-flow guide channel; and

17. The baffle of claim 16 wherein an edge of the flow tube section adjacent to one end of the baffle tube section is provided with an extension extending toward one side of the baffle tube section and circumscribing the flow tube section and the baffle tube section to form an annular mounting groove, wherein a length of the extension along an axial direction of the baffle is less than a length of the baffle tube section.

18. The baffle of claim 16 wherein the third sub-baffle passage has a depth greater than the thickness of the wall of the conduit section;