CN114405135B

CN114405135B - Filter element assembly and water purifying device

Info

Publication number: CN114405135B
Application number: CN202210015965.2A
Authority: CN
Inventors: 陈伟明; 郑跃东; 黄廷健
Original assignee: Foshan Midea Qinghu Water Purification Equipment Co ltd; Midea Group Co Ltd
Current assignee: Foshan Midea Qinghu Water Purification Equipment Co ltd; Midea Group Co Ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2023-09-22
Anticipated expiration: 2042-01-07
Also published as: CN114405135A

Abstract

The invention relates to the field of water purifying and drinking appliances, and provides a filter element assembly and a water purifying device. A filter cartridge assembly comprising: a housing formed with a receiving chamber; the inner shell assembly is arranged in the accommodating cavity and is suitable for dividing the accommodating cavity into a first cavity and a second cavity, the first water inlet and the first water outlet are communicated with the first cavity, and the second water outlet and the second water inlet are communicated with the second cavity; the first filtering component is arranged in the first cavity and is of a hollow structure; the second filtering component is arranged in the second cavity and is of a hollow structure; wherein, the inner shell subassembly includes first inner shell and second inner shell, and first inner shell sets up in first filter element, and the second inner shell has open end and blind end, and the open end seal cover of second inner shell establishes the one end of keeping away from the installation department at first inner shell. The filter element component provided by the invention is innovatively designed on the basis of the structure of the composite filter element, so that the design of an internal composite structure is optimized, the cost and the manufacturability are optimized, and the reliability is improved.

Description

Filter element assembly and water purifying device

Technical Field

The invention relates to the technical field of water purifying and drinking appliances, in particular to a filter element assembly and a water purifying device.

Background

With the pursuit of quality of life, the quality of drinking water has begun to be of great concern. Reverse osmosis water purification devices are becoming increasingly popular because of the freshness, sanitation and safety of the purified water they produce. Tap water has higher soluble solids, and the reverse osmosis filter element component can block a large amount of ions in raw water in front of the reverse osmosis membrane under the action of the booster pump, so that the soluble solids of water passing through the reverse osmosis membrane meet the standard of direct drinking water. In the related art, the front filter element component and the rear filter element component of the water purifying device are separately arranged, so that the same or different filtering functions can be realized. When a user changes the filter element assemblies, the two filter element assemblies need to be changed at the same time, and the operation is complex.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the invention proposes a filter cartridge assembly in which the first chamber and the second chamber are independent of each other, so that the filtration processes inside each of them do not affect each other. In addition, the inner shell structure formed by the first inner shell and the second inner shell has better tightness and is more convenient to assemble. In conclusion, the invention carries out innovative design on the basis of the composite structure of the original composite filter element, optimizes the design of the internal composite structure, optimizes the cost and the manufacturability, and improves the reliability.

The invention also provides a water purifying device.

An embodiment of a filter cartridge assembly according to the first aspect of the invention comprises:

the shell is provided with a containing cavity, one end of the shell is provided with a mounting part, and the mounting part is provided with 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 inner shell assembly is arranged in the accommodating cavity and is suitable for dividing the accommodating cavity into a first cavity and a second cavity, the first water inlet and the first water outlet are communicated with the first cavity, and the second water outlet and the second water inlet are communicated with the second cavity;

the first filtering component is arranged in the first cavity and is of a hollow structure;

the second filtering component is arranged in the second cavity and is of a hollow structure;

the inner shell assembly comprises a first inner shell and a second inner shell, the first inner shell is arranged in the first filtering component, the second inner shell is provided with an open end and a closed end, the open end of the second inner shell is sealed and sleeved at one end, far away from the mounting part, of the first inner shell, a first cavity is formed between the inner wall of the outer shell and the outer wall of the inner shell assembly, and the second cavity is formed in the inner shell assembly.

According to the filter element assembly provided by the embodiment of the invention, the accommodating cavity is divided into the first cavity and the second cavity by the inner shell assembly, and when water flows into the first cavity from the first water inlet and is filtered by the first filtering component, the filtered water flows out from the first water outlet; when water flows into the second chamber from the second water inlet and is filtered by the second filtering component, the filtered water flows through the second water outlet, so that the first chamber and the second chamber are independent from each other, and the filtering processes in the first chamber and the second chamber cannot influence each other. In addition, the inner shell structure formed by the first inner shell and the second inner shell has better tightness and is more convenient to assemble. In conclusion, the invention carries out innovative design on the basis of the composite structure of the original composite filter element, optimizes the design of the internal composite structure, optimizes the cost and the manufacturability, and improves the reliability.

According to one embodiment of the present invention, a first flow passage is formed between the outer case and the first filter member, and a second flow passage is formed between the first filter member and the first inner case; the first flow passage is in fluid communication with one of the first water inlet and the first water outlet, and the second flow passage is in fluid communication with the other of the first water inlet and the first water outlet;

A third flow passage is formed between the inner housing assembly and the second filter member, a fourth flow passage is formed inside the second filter member, the third flow passage is in fluid communication with one of the second water inlet and the second water outlet, and the fourth flow passage is in fluid communication with the other of the second water inlet and the second water outlet.

According to one embodiment of the invention, a first supporting piece is arranged in the first flow channel and is abutted against the first filtering component and the shell;

and/or a second supporting piece is arranged in the second flow channel and is abutted against the first filtering component and the first inner shell.

According to one embodiment of the invention, the first filter element comprises a first end cap and a hollow first filter cartridge, the first end cap being provided on a side of the first filter cartridge adjacent to the mounting portion, the first end cap being formed with a first mounting groove adapted to mount the first filter cartridge;

the first end cap is integrally formed with the first support member, and/or the first inner housing is integrally formed with the second support member.

According to one embodiment of the present invention, the first support includes a plurality of first support ribs spaced along an outer edge of the first filter element;

And/or, the second supporting piece comprises a plurality of second supporting ribs, and the second supporting ribs are arranged at intervals along the outer edge of the first inner shell.

According to one embodiment of the invention, a third support is arranged in the third flow passage, and the third support is abutted against the inner shell assembly and the second filtering component.

According to one embodiment of the invention, the second filter element comprises a second end cap and a hollow second filter element, wherein the second end cap is arranged on one side of the second filter element, which is close to the mounting part, and the second end cap is provided with a second mounting groove which is suitable for mounting the second filter element;

the second end cover is provided with a water outlet pipe section arranged in the first inner shell, the second end cover is also provided with a water inlet pipe section arranged in the second filter element, and the water inlet pipe section and the water outlet pipe section are communicated and jointly define the fourth flow channel;

the second end cover is integrally formed with the third support member, or the first inner shell is integrally formed with the third support member.

According to one embodiment of the present invention, the third support member includes a plurality of third support ribs spaced along the inner edge of the inner shell assembly.

According to an embodiment of the present invention, the number of the third supporting members is plural, each third supporting member includes a plurality of third supporting ribs disposed at the same mounting height of the third flow channel, and the plurality of third supporting members are disposed at intervals along different mounting heights of the third flow channel, respectively.

According to one embodiment of the invention, the first inner shell and the second inner shell are fixed by means of spin welding.

According to one embodiment of the invention, the outer wall of the open end of the second inner housing is sealed with the inner wall of the outer housing by means of a seal.

According to one embodiment of the invention, the filter cartridge assembly further comprises:

the first cover body is covered on one end of the shell far away from the installation part, and the second cover body is detachably sleeved on the outer side of the first cover body.

According to a second aspect of the present invention, a water purification apparatus comprises a body and a filter element assembly according to the first aspect of the present invention, wherein the filter element assembly is disposed in the body.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the invention 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, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a filter cartridge assembly provided in an embodiment of the present invention;

FIG. 2 is an exploded schematic view of a filter cartridge assembly provided in an embodiment of the present invention;

FIG. 3 is a schematic view of a cartridge assembly according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a schematic illustration of the flow of water within a cartridge assembly provided in an embodiment of the present invention;

FIG. 6 is a schematic perspective view of a housing provided in an embodiment of the present invention;

FIG. 7 is a schematic view of a housing according to an embodiment of the present invention;

FIG. 8 is a cross-sectional view taken along line B-B of FIG. 7;

FIG. 9 is a cross-sectional view taken along line C-C of FIG. 7;

FIG. 10 is a schematic illustration of a cartridge assembly according to an embodiment of the present invention with a housing removed;

FIG. 11 is a cross-sectional view taken along line D-D of FIG. 10;

FIG. 12 is a schematic perspective view of a first end cap according to an embodiment of the present invention;

FIG. 13 is a cross-sectional view of a first end cap provided by an embodiment of the present invention;

FIG. 14 is a schematic perspective view of a first inner housing provided in an embodiment of the present invention;

FIG. 15 is a cross-sectional view of a first inner housing provided in an embodiment of the present invention;

FIG. 16 is a schematic perspective view of a second inner housing provided in an embodiment of the present invention;

FIG. 17 is a cross-sectional view of a second inner housing provided in an embodiment of the present invention;

FIG. 18 is a schematic view of the construction of an inner housing assembly according to an embodiment of the present invention;

FIG. 19 is a cross-sectional view of an inner housing assembly provided by an embodiment of the present invention;

FIG. 20 is a schematic perspective view of a second end cap according to an embodiment of the present invention;

FIG. 21 is a cross-sectional view of a second end cap provided by an embodiment of the present invention;

FIG. 22 is a schematic perspective view of a third end cap according to an embodiment of the present invention;

FIG. 23 is an exploded schematic view of a water stop valve provided by an embodiment of the present invention;

FIG. 24 is a cross-sectional view of a water stop valve provided by an embodiment of the present invention;

fig. 25 is a schematic perspective view of a first cover according to an embodiment of the present invention;

fig. 26 is a schematic structural view of a first cover according to an embodiment of the present invention;

fig. 27 is a schematic perspective view of a second cover according to an embodiment of the present invention;

Fig. 28 is a schematic structural view of a second cover according to an embodiment of the present invention;

FIG. 29 is a cross-sectional view taken along line E-E of FIG. 26;

fig. 30 is a schematic perspective view of a handle according to an embodiment of the present invention.

Reference numerals:

1. a housing; 11. a mounting part; 12. a first cover; 121. the first convex rib; 122. a first guide surface; 13. a second cover; 131. a notch; 132. the second convex rib; 133. a second guide surface; 134. an avoidance groove; 14. a third cover; 15. positioning ribs; 101. a first chamber; 102. a second chamber; 103. a first water inlet; 104. a first water outlet; 105. a second water inlet; 106. a second water outlet; 107. a first flow passage; 108. a second flow passage; 109. a third flow passage; 110. a fourth flow passage; 21. a first end cap; 211. a first support; 212. a first mounting groove; 22. a first filter element; 31. a second end cap; 311. a water outlet pipe section; 312. a cover section; 313. a water inlet pipe section; 314. a third support; 315. a second mounting groove; 32. a second filter element; 33. a third end cap; 41. a first inner housing; 411. a first portion; 412. a second portion; 413. a second support; 42. a second inner case; 51. a water stop valve; 52. a seal ring; 53. a handle part; 5140. a water stop valve; 5142. a valve housing; 5144. a valve cover; 5146. a valve core; 5148. an elastic member; 5150. a touch piece; 5152. a reinforcing part; 5154. a first guide; 5156. a second guide; 5158. a first positioning groove; 5160. a spool seal; 5162. an inclined surface; 5164. a second positioning groove; 5166. a valve housing seal; 5168. a blocking part.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.

In embodiments of the invention, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The filter element assembly according to the embodiment of the first aspect of the present invention will be described below with reference to the accompanying drawings, and it should be noted that the filter element assembly of the present invention may be applied to a water treatment apparatus such as a water purifier or a water dispenser, and the present invention is not limited in particular to the application scenario of the filter element assembly.

As shown in fig. 1 to 30, a cartridge assembly according to an embodiment of the present invention includes an outer housing 1, an inner housing assembly, a first filter member, and a second filter member.

The housing 1 is formed with a receiving chamber (not shown in the drawings), one end of the housing 1 is provided with a mounting portion 11, and the mounting portion 11 is formed with a first water inlet 103, a first water outlet 104, a second water inlet 105, and a second water outlet 106 communicating with the receiving chamber.

The inner shell assembly is arranged in the accommodating cavity, the inner shell assembly is suitable for dividing the accommodating cavity into a first cavity 101 and a second cavity 102, the first water inlet 103 and the first water outlet 104 are communicated with the first cavity 101, and the second water outlet 106 and the second water inlet 105 are communicated with the second cavity 102.

The first filter member is disposed in the first chamber 101 and has a hollow structure, and the second filter member is disposed in the second chamber 102 and has a hollow structure.

Wherein, the inner shell assembly includes first inner shell 41 and second inner shell 42, and first inner shell 41 sets up in first filter component, and second inner shell 42 has open end and blind end, and the open end seal cover of second inner shell 42 establishes the one end of keeping away from installation department 11 at first inner shell 41, is formed with first cavity 101 between the inner wall of shell 1 and the outer wall of inner shell assembly, and the inside of inner shell assembly is formed with second cavity 102.

According to the filter element assembly of the embodiment of the invention, the accommodating cavity is divided into the first cavity 101 and the second cavity 102 by the inner shell assembly, when water flows into the first cavity 101 from the first water inlet 103 and is filtered by the first filtering component, the filtered water flows out from the first water outlet 104; after the water flows into the second chamber 102 from the second water inlet 105 and is filtered by the second filtering means, the filtered water flows through the second water outlet 106, so that the first chamber 101 and the second chamber 102 are independent from each other, and thus the filtering processes inside the first chamber and the second chamber are not affected each other. In addition, the inner housing structure formed by the first inner housing 41 and the second inner housing 42 has better tightness and more convenient assembly. In conclusion, the invention carries out innovative design on the basis of the composite structure of the original composite filter element, optimizes the design of the internal composite structure, optimizes the cost and the manufacturability, and improves the reliability.

According to the embodiment of the present invention, the above-mentioned "the first chamber 101 is formed between the inner wall of the outer casing 1 and the outer wall of the inner casing assembly", that is, the first chamber 101 is formed between the outer wall of the first inner casing 41 and the outer wall of the second inner casing 42 and the inner wall of the outer casing 1. The "inner housing assembly has the second chamber 102 formed therein", that is, the inner wall of the first inner housing 41 and the inner wall of the second inner housing 42 together define the second chamber 102.

According to the embodiment of the present invention, the housing 1 is formed with a receiving cavity therein for placing the first filter member and the second filter member, and the housing 1 is of a rectangular parallelepiped structure or a cylindrical structure in order to ensure that the first filter member and the second filter member have a large size and a filtering path.

In some embodiments, the casing 1 may also have a special-shaped structure, so that the casing 1 can be embedded with the internal structure of the water purifying device, thereby achieving the purpose of saving space.

As shown in fig. 1, according to an embodiment of the present invention, one end of a housing 1 is provided with a mounting portion 11, the mounting portion 11 protrudes from an end surface of the housing 1, and the mounting portion 11 is used for connecting a water supply and drainage structure of a water purifying device. The mounting portion 11 and the housing 1 may be integrally formed, and the end portion of the housing 1 protrudes outwards to form the mounting portion 11, so that the housing 1 has better tightness and lower manufacturing cost. Alternatively, the mounting portion 11 and the housing 1 may be separate members, and the mounting portion 11 is mounted on the housing 1 by a locking member, and the two members are in sealing connection, so that the housing 1 and the mounting portion 11 are separate units, which is beneficial to assembly of the internal structure of the filter element assembly.

In the related art, the front filter element component and the rear filter element component of the water purifying device are separately arranged, so that the same or different filtering functions can be realized. When a user changes the filter element assemblies, the two filter element assemblies need to be changed at the same time, and the operation is complex.

In order to solve the above technical problems, according to the filter element assembly provided by the embodiment of the invention, two independent filter elements, namely a first filter element and a second filter element, are arranged in the accommodating cavity, and the first filter element and the second filter element can realize the same or different filter functions. According to the invention, the first filtering component and the second filtering component are integrated in the filter element assembly, so that the front-rear composite filter element is formed, and therefore, when a user needs to replace the filter element assembly, the user can meet the use requirement by only replacing the filter element assembly once, the operation is simpler, the use is more convenient, and in addition, the installation space in the water purifier can be saved.

As shown in fig. 4, according to an embodiment of the present invention, a first flow passage 107 is formed between the outer case 1 and the first filter member, and a second flow passage 108 is formed between the first filter member and the first inner case 41. The first flow channel 107 is in fluid communication with one of the first water inlet 103 and the first water outlet 104, and the second flow channel 108 is in fluid communication with the other of the first water inlet 103 and the first water outlet 104.

A third flow passage 109 is formed between the inner housing assembly and the second filter member, a fourth flow passage 110 is formed within the second filter member, the third flow passage 109 is in fluid communication with one of the second water inlet 105 and the second water outlet 106, and the fourth flow passage 110 is in fluid communication with the other of the second water inlet 105 and the second water outlet 106.

In this embodiment, the first flow channel 107 and the second flow channel 108 are located in the first chamber 101, the third flow channel 109 and the fourth flow channel 110 are located in the second chamber 102, and the moisture in the first chamber 101 and the moisture in the second chamber 102 are isolated from each other during circulation, so that the same or different filtering effects are achieved through the first filtering component and the second filtering component, and stable operation of the two sets of filtering modules is ensured without mutual interference. For example, the first filter element may filter to produce domestic water and the second filter element may filter to produce potable water.

As shown in fig. 4 and 5, in one embodiment of the present invention, the flow process of the water flow in the accommodating chamber is as follows:

the first water inlet 103 receives external tap water, the tap water flows through the first flow channel 107 and is filtered by the first filter component, the first filter component filters the tap water to obtain domestic water, the domestic water flows to the first water outlet 104 along the second flow channel 108, and then the domestic water flows out of the first water outlet 104 for a user to use.

The second water inlet 105 receives pure water filtered by the reverse osmosis filter element, the pure water flows through the third flow passage 109 and is filtered by the second filter element, the second filter element filters to obtain drinking water, the drinking water flows to the second water outlet 106 along the fourth flow passage 110, and then the drinking water flows out of the second water outlet 106 for drinking by a user.

In the process of flowing the water in the accommodating cavity, due to the separation of the inner housing assembly, the water filtering process in the first cavity 101 and the water filtering process in the second cavity 102 may not be mutually affected, the user may select the first filtering component or the second filtering component to filter the water according to the requirement of the user, and the user may also simultaneously inject the water into the first water inlet 103 and the second water inlet 105, so that the first filtering component and the second filtering component work simultaneously.

As shown in fig. 4, according to an embodiment of the present invention, a first support 211 is provided in the first flow channel 107, and the first support 211 abuts against the first filter element and the housing 1.

In this embodiment, the first supporting member 211 is used to support the flow space in the first flow channel 107, that is, the first supporting member 211 can maintain the space between the first filtering component and the housing 1, so as to maintain the water flowing capability of the first flow channel 107, and avoid the occurrence of pipe blockage after long-term use.

In some embodiments of the present invention, the first supporting member 211 may have a structure of a fastening point, a protrusion, a beam, etc., and the present invention is not particularly limited herein, as long as the first supporting member 211 can support a gap between the first filtering part and the housing 1. In addition, the first supporting member 211 may be a single part independent of the first filtering member or the housing 1, and the first supporting member 211 may be a structure integrally formed with the first filtering member or the housing 1.

As shown in fig. 4, according to an embodiment of the present invention, a second support 413 is provided in the second flow path 108, and the second support 413 abuts against the first filter element and the first inner housing 41.

In this embodiment, the function of the second support 413 is to support the flow space in the second flow channel 108, that is, the second support 413 can maintain the space between the first filter element and the first inner housing 41, so as to maintain the water flow capacity of the second flow channel 108, and avoid the occurrence of pipe blockage after long-term use.

In some embodiments of the present invention, the second support 413 may have a structure of a fastening point, a protrusion, a cross beam, etc., and the present invention is not particularly limited herein as long as the second support 413 can support a gap between the first filter part and the first inner case 41. In addition, the second support 413 may be a single part independent of the first filter member or the first inner case 41, and the second support 413 may be a structure integrally formed with the first filter member or the first inner case 41.

As shown in fig. 11, according to an embodiment of the present invention, the first filter member includes a first end cap 21 and a first filter cartridge 22, the first filter cartridge 22 is of a hollow structure, the first end cap 21 is provided at a side of the first filter cartridge 22 near the mounting portion 11, and the first end cap 21 is formed with a first mounting groove 212 adapted to mount the first filter cartridge 22.

In this embodiment, the first filter element 22 functions to filter water, and the first end cap 21 may be used to mount and position the first filter element 22 such that the first filter element 22 is fixed to the outside of the first inner case 41. The end portion of the first filter element 22 is inserted into the first mounting groove 212, so that the position of the first filter element 22 is not changed, and it can be understood that the first end cover 21 can limit the displacement of the first filter element 22, so that deformation and loosening of the first filter element 22 under the action of water pressure are avoided, and the filtering capability of the first filtering component is improved.

In one embodiment of the present invention, the first filter element 22 includes an outer layer of folded PP cotton and an inner layer of carbon rod, the folded PP cotton can effectively remove large particle impurities such as silt and iron filings in water, and the carbon rod can effectively adsorb impurities such as peculiar smell, abnormal color and residual chlorine, so as to further improve water quality.

As shown in fig. 12 and 13, in one embodiment of the present invention, the first end cap 21 is an annular end cap, the first inner housing 41 is connected to the second water inlet 105 and the second water outlet 106 after passing through a through hole in the middle of the first end cap 21, the first filter element 22 is an annular filter element, and the first filter element 22 is mounted in an annular first mounting groove 212. In this way, the first end cap 21 can simultaneously achieve the mounting positioning of the first filter element 22 and the mounting positioning of the first inner housing 41.

As shown in fig. 12 and 13, in one embodiment of the present invention, the first end cap 21 is integrally formed with the first support 211, or the inner wall of the housing 1 is protruded toward the first filter cartridge 22 to form the first support 211. In this way, there is no concern about the assembly problem of the first support 211, and the stability is stronger. For example, the first support 211 is a protrusion formed on the outer peripheral edge of the first end cover 21, and the free end of the first support 211 abuts against the inner wall of the housing 1.

As shown in fig. 14, in one embodiment of the present invention, the first inner housing 41 and the second support 413 are integrally formed, for example, an outer wall of the first inner housing 41 is protruded toward the first filter cartridge 22 to form the second support 413, and a free end of the second support 413 is abutted against an inner wall of the first filter cartridge 22 or the first end cap 21. Alternatively, the first end cover 21 and the second support 413 are integrally formed, for example, an inner wall of the first end cover 21 protrudes toward the first inner case 41 to form the second support 413, and a free end of the second support 413 abuts against an outer wall of the first inner case 41.

As shown in fig. 12, according to an embodiment of the present invention, the first supporting member 211 includes a plurality of first supporting ribs (not shown) spaced apart along an outer edge of the first filtering part. Thus, the plurality of first supporting ribs arranged at intervals can ensure smooth circulation of water flow in the first flow channel 107 while meeting the supporting effect, and reduce the resistance of the first supporting piece 211 to the water flow. Furthermore, the plurality of first support ribs provided in the annular direction can also ensure that each region in the circumferential direction of the first flow passage 107 can be supported.

As shown in fig. 14, according to an embodiment of the present invention, the second support 413 includes a plurality of second support ribs (not shown) spaced apart along the outer edge of the first inner case 41. In this way, the plurality of second supporting ribs arranged at intervals can ensure smooth circulation of water flow in the second flow passage 108 while meeting the supporting effect, and reduce the resistance of the second supporting piece 413 to the water flow. In addition, the plurality of second support ribs provided in the annular direction can also ensure that each region in the circumferential direction of the second flow passage 108 can be supported.

As shown in fig. 11, according to an embodiment of the present invention, a third support 314 is disposed in the third flow channel 109, and the third support 314 abuts against the inner housing assembly and the second filter member.

In this embodiment, the third support 314 is used to support the flow space in the third flow channel 109, that is, the third support 314 can maintain the space between the second filter component and the inner housing component, so as to maintain the water flow capacity of the third flow channel 109, and avoid the occurrence of pipe blockage after long-term use.

In some embodiments of the present invention, the third support 314 may have a structure of a fastening point, a protrusion, a beam, etc., which is not particularly limited herein, so long as the third support 314 may support a gap between the second filter member and the inner housing assembly. In addition, the third support 314 may be a single part independent of the second filter element or the inner housing assembly, and the first support 211 may be a structure integrally formed with the second filter element or the inner housing assembly.

As shown in fig. 11, the second filter element includes a second end cap 31 and a second filter cartridge 32 according to one embodiment of the invention. The second filter element 32 has a hollow structure, the second end cap 31 is provided on a side of the second filter element 32 near the mounting portion 11, and the second end cap 31 is formed with a second mounting groove 315 adapted to mount the second filter element 32.

As shown in fig. 20 and 21, the second end cap 31 has a water outlet pipe section 311 provided inside the first inner housing 41, and the second end cap 31 further has a water inlet pipe section 313 provided inside the second filter element 32, the water inlet pipe section 313 and the water outlet pipe section 311 being communicated and collectively defining the fourth flow passage 110.

In the present embodiment, the third flow channel 109 is defined between the first inner housing 41 and the second end cap 31, and the fourth flow channel 110 is formed inside the second end cap 31 (i.e., inside the water outlet pipe section 311 and the water inlet pipe section 313). The flow process of the water flow in the second chamber 102 is as follows: after the water enters the second water inlet 105, the water flows through the third flow passage 109 between the first inner housing 41 and the second end cap 31, then the water flows into the second filter element 32 and is filtered by the second filter element 32, the filtered water flows into the hollow interior region of the second filter element 32, then the water flows into the water inlet pipe section 313 and passes through the water outlet pipe section 311 until the water flows out of the second water outlet 106.

In one embodiment of the present invention, the second filter element 32 may be composed of a carbon rod or the like, and the taste is remarkably improved after pure water generated by the filtration of the reverse osmosis filter element is filtered by the carbon rod.

As shown in fig. 20 and 21, in one embodiment of the present invention, the first end cap 21 includes a water inlet pipe section 313, a cover section 312, and a water outlet pipe section 311, which are disposed in sequence. The first inner shell 41 is a hollow T-shaped pipeline, the first inner shell 41 comprises a first part 411 with a smaller diameter and a second part 412 with a larger diameter, the first part 411 of the first inner shell 41 is sleeved inside the first filter element 22, and the water outlet pipe section 311 of the first end cover 21 is sleeved inside the first part 411. The second portion 412 of the first inner shell 41 is disposed over the cover section 312 of the first end cap 21.

The cover section 312 of the first end cover 21 is formed with an annular second mounting groove 315, the second filter element 32 is mounted in the second mounting groove 315, and the water inlet pipe section 313 of the first end cover 21 is sleeved inside the second filter element 32. The third flow passage 109 is formed between the inner wall of the first inner housing 41 and the outer wall of the inlet pipe section 313 of the second end cap 31 and the outer wall of the cap section 312.

As shown in fig. 21, according to an embodiment of the present invention, the second end cap 31 is integrally formed with the third support 314, or the first inner case 41 is integrally formed with the third support 314. For example, the outer wall of the second end cap 31 is protruded toward the first inner case 41 to form the third support 314, or the inner wall of the first inner case 41 is protruded toward the second end cap 31 to form the third support 314.

In this way, the assembly process of the third support 314 is omitted, and the third support 314 can be prevented from affecting its supporting effect due to the impact of water flow, and the structural stability is stronger.

As shown in fig. 20, the third support 314 includes a plurality of third support ribs (not shown) spaced along the inner edge of the inner shell assembly according to one embodiment of the present invention. In this way, the third supporting ribs arranged at intervals can ensure smooth circulation of the water flow in the third flow channel 109 while meeting the supporting effect, and reduce the resistance of the third supporting piece 314 to the water flow. Further, the plurality of third support ribs provided in the annular direction can also ensure that each region in the circumferential direction of the third flow passage 109 can be supported.

According to an embodiment of the present invention, the number of the third supporting members 314 is plural, each third supporting member 314 includes a plurality of third supporting ribs provided at the same installation height of the third flow path 109, and the plurality of third supporting members 314 are respectively arranged at intervals along different installation heights of the third flow path 109. In this way, the plurality of third supports 314 are provided in the flow direction of the third flow passage 109, so that it is ensured that each region in the flow direction of the third flow passage 109 can be supported, and clogging of the third flow passage 109 can be further avoided.

As shown in fig. 22, according to an embodiment of the present invention, the second filter element further includes a third end cap 33, the third end cap 33 is disposed at the bottom of the second chamber 102 and abuts against the bottom wall inside the second inner case 42, and the bottom of the second filter element 32 is positioned in the third end cap 33, so that the third end cap 33 and the second end cap 31 together perform a positioning and mounting function on the second filter element 32, so that the second filter element 32 is more stably mounted.

As shown in fig. 18 and 19, according to an embodiment of the present invention, the first inner case 41 and the second inner case 42 are fixed by spin welding. In this way, in this embodiment, the connection mode of the internal conversion position is changed from the connection of the sealing ring 52 to the spin welding, so that the reliability of the structure can be greatly improved, and the tightness between the first chamber 101 and the second chamber 102 is ensured, thereby realizing stable combination of the first filter component and the second filter component.

As shown in fig. 4, according to an embodiment of the present invention, one end of the outer case 1 adjacent to the second inner case 42 is provided with a detachable first cover 12. Opening the first cover 12 can put into the accommodation chamber with first filter element, second filter element and inner shell subassembly, fix first cover 12 on shell 1, can be with first filter element, second filter element and inner shell subassembly shutoff in the accommodation chamber.

According to one embodiment of the invention, the outer wall of the open end of the second inner housing 42 is sealed with the inner wall of the outer housing 1 by means of a seal (not shown in the figures). In this way, water flow can be prevented from flowing into the vicinity of the first cover 12 through the gap between the second inner case 42 and the outer case 1, thereby preventing water flow from leaking at the first cover 12, and enhancing the sealing of the overall structure. For example, the sealing member may be a rubber sealing ring.

As shown in fig. 2, according to the filter element assembly provided by the embodiment of the invention, the water stop valve 51 is arranged in each of the first water inlet 103, the first water outlet 104, the second water inlet 105 and the second water outlet 106, and the water stop valve 51 has an open position and a closed position.

In the open position, the corresponding first water inlet 103, first water outlet 104, second water inlet 105 and second water outlet 106 are in a water guiding state; in the closed position, the corresponding first water inlet 103, first water outlet 104, second water inlet 105 and second water outlet 106 are in a water blocking state.

It will be appreciated that when the cartridge assembly is operating normally, the water stop valve 51 is in an open position under the influence of other support structures, the first water inlet 103 receives tap water from the outside, the first filter element filters the tap water to form domestic water, and the domestic water is discharged along the first water outlet 104. The second water inlet 105 receives pure water filtered by the reverse osmosis filter element, and the pure water passes through the second filter element to form drinking water, and the drinking water flows out along the second water outlet 106 for a user to use. In the closed position, the corresponding first water inlet 103, first water outlet 104, second water inlet 105 and second water outlet 106 are in a water blocking state, residual water in the filter element assembly can not leak, pollution to a cabinet or sprinkling on a user is avoided, and the filter element assembly is cleaner and sanitary and more convenient.

As shown in fig. 2, the water stop valve 51 is located at the mounting portion 11, and after the filter element assembly is disassembled, the water stop valve 51 needs to be prevented from being touched, so as to avoid leakage of residual water along the first water inlet 103, the first water outlet 104, the second water inlet 105 and the second water outlet 106.

As shown in fig. 23 and 24, in some embodiments, the water stop valve 51 includes a valve housing 5142, a valve cover 5144, a valve core 5146, and a resilient member 5148.

The valve housing 5142 has a hollow structure, a cylindrical structure, or a polygonal frame structure, and the outer contour of the valve housing 5142 is adapted to the inner wall contours of the first water inlet 103, the first water outlet 104, the second water inlet 105, and the second water outlet 106. An inner wall of the valve housing 5142 is formed with an annular blocking portion 5168 for blocking the valve body 5146.

The valve cap 5144 is connected to one end of the valve housing 5142 to close off the end of the valve housing 5142, and the valve cap 5144 is combined with the valve housing 5142 to form a semi-closed chamber. The valve core 5146 is disposed within the valve housing 5142, with the valve core 5146 being located between the valve cap 5144 and the blocking portion 5168.

It will be appreciated that after the valve cartridge 5146 is installed within the valve housing 5142, the area between the valve cap 5144 and the blocking portion 5168 is restricted from exiting the valve housing 5142. In order to ensure the liquid to flow, the valve cover 5144 is further provided with a water passing hole (not shown), and in a water guiding state, the liquid can flow along the water passing hole.

As shown in fig. 23 and 24, the elastic member 5148 is disposed in the valve housing 5142, and one end of the elastic member 5148 is connected to the valve cover 5144 and the other end is connected to the valve core 5146, so that the valve core 5146 can be moved in a direction away from the valve cover 5144. When only the elastic member 5148 acts, the valve core 5146 abuts against the blocking portion 5168, so that water can be blocked from passing through, and the water stop valve 51 is at the closed position. When a force is applied to the valve element 5146, the elastic member 5148 is compressed, and the valve element 5146 is away from the blocking portion 5168, and the water stop valve 51 is at the open position. Accordingly, the elastic member 5148 can switch the corresponding first water inlet 103, first water outlet 104, second water inlet 105, and second water outlet 106 between the water guiding state and the water blocking state.

It will be appreciated that when the cartridge assembly is coupled to the body of the water purification device, the structure in the body will support the cartridge 5146, thereby allowing the cartridge assembly to be in a water-conducting state. When the filter element assembly is removed, the acting force applied to the valve core 5146 is cancelled, the valve core 5146 is abutted to the blocking part 5168 under the action of the elastic piece 5148, so that the filter element assembly is in a water blocking state, residual water in the filter element assembly cannot leak, and the cleanness and the sanitation of the filter element assembly are improved.

It is understood that the resilient member 5148 can be a spring, a steel sheet, or the like.

As shown in fig. 23 and 24, in some embodiments, a contact member 5150 is disposed on a side of the spool 5146 facing away from the elastic member 5148, and the contact member 5150 is disposed inside the blocking portion 5168.

It will be appreciated that the contact 5150 can apply a force to the cartridge 5146, and that providing the contact 5150 on the cartridge 5146 facilitates the use of the cartridge assembly with the housing. After the filter element assembly is in butt joint with the machine body, the machine body can apply acting force to the touch pressing piece 5150, so that effective communication between the filter element assembly and the machine body is ensured. Meanwhile, the contact pressing piece 5150 also reduces the difficulty of the butt joint of the filter element assembly and the machine body, and after the filter element assembly is installed at the corresponding position, the connecting pipe on the machine body is automatically in butt joint with the contact pressing piece 5150, so that the position does not need to be corrected for multiple times, and the use is more convenient.

As shown in fig. 23 and 24, in some embodiments, the outside of the contact 5150 is provided with a reinforcement 5152, and the reinforcement 5152 may increase the structural strength of the contact 5150.

It is understood that the number of the reinforcement portions 5152 may be plural, and the reinforcement portions 5152 are uniformly distributed on the outer side of the pressing member 5150. In some cases, the reinforcement 5152 is a rib, four ribs are distributed in a cross shape, and flow channels are formed between the ribs. The reinforcement 5152 not only increases the structural strength of the pressing member 5150, but also does not affect the flow of the liquid inside the water stop valve 51.

When the valve body 5146 abuts against the blocking portion 5168, the water stop valve 51 is in the closed position and is in the blocking state. The stability of the movement of the valve core 5146 is increased, which is beneficial to improving the water blocking performance of the water stop valve 51.

As shown in fig. 23 and 24, in some embodiments, the water stop valve 51 further includes a first guide 5154 and a second guide 5156, the first guide 5154 being slidably coupled to the second guide 5156.

The first guide 5154 is provided with opposite ends, one end of the first guide 5154 is connected to the valve cover 5144, and the other end extends in the direction of the valve core 5146. The second guide 5156 is provided with opposite ends, one end of the second guide 5156 is connected to the valve core 5146, and the other end extends toward the direction in which the valve cover 5144 is located. The sliding connection of the first guide 5154 and the second guide 5156 ensures that the spool 5146 remains stable during movement.

It is to be appreciated that the first guide member 5154 and the second guide member 5156 can slide relatively along the linear direction, and the valve core 5146 can not shake or deviate when moving away from or approaching the blocking portion 5168, and can accurately abut against the annular blocking portion 5168, which is beneficial to improving the water blocking performance of the water stop valve 51.

In some embodiments, one of the first guide 5154 and the second guide 5156 is provided with a sliding rail, and the other is provided with a sliding groove, and the sliding rail and the sliding groove are matched with each other, so that stable sliding of the two can be ensured.

In some embodiments, one of the first guide 5154 and the second guide 5156 is provided with a guide hole, and the other guide hole is provided with a guide rod, the guide rod is movably inserted into the guide hole, and the guide hole and the guide rod are matched with each other, so that stable sliding of the first guide 5154 and the second guide 5156 can be ensured.

It is understood that when the number of the elastic members 5148 is one, the first guide member 5154 is connected to the center of the valve cover 5144, the elastic members 5148 are sleeved outside the first guide member 5154, and the elastic members 5148 apply a force to the centers of the valve cover 5144 and the valve core 5146, so that the movement of the valve core 5146 is more balanced and stable. When the number of the elastic members 5148 is plural, the plural elastic members 5148 are uniformly distributed between the valve body 5146 and the valve cover 5144, so that it is ensured that the valve body 5146 is uniformly and uniformly balanced in force.

When the valve core 5146 abuts against the blocking portion 5168, the water stop valve 51 is in the closed position, the first water inlet 103, the first water outlet 104, the second water inlet 105 and the second water outlet 106 are in the water blocking state, and the tightness between the valve core 5146 and the blocking portion 5168 determines the tightness of the water stop valve 51.

As shown in fig. 23 and 24, in some embodiments, a first detent 5158 is provided on an outer side of the spool 5146, and a spool seal 5160 is provided within the first detent 5158.

As can be appreciated, the valve core seal 5160 is made of plastic or silicone, and in the water blocking state, the valve core seal 5160 abuts against the blocking portion 5168 to prevent the flow of liquid in the valve housing 5142. The valve core sealing member 5160 has elasticity, and is deformed under the action of the elastic member 5148, so that the valve core sealing member is attached to the blocking portion 5168, and the sealing effect of the water stop valve 51 is good.

As shown in fig. 24, in some embodiments, the blocking portion 5168 is formed with a tapered surface 5162 on a side thereof adjacent to the spool 5146 in a direction in which the elastic member 5148 is compressed.

It will be appreciated that in the water-conducting state, the valve element 5146 is disengaged from the blocking portion 5168, and a flow path is formed therebetween, and the liquid flows in the valve housing 5142. The sloped surface 5162 can shorten the flow path of the liquid and can reduce the resistance to the flow of the liquid, thereby facilitating the passage of the liquid within the valve housing 5142 and the flux of the cartridge assembly.

Meanwhile, when the elastic member 5148 pushes the valve core 5146 to approach the blocking portion 5168, the area of the valve core 5146 contacting the inclined surface 5162 is larger, and under the elastic action, the valve core 5146 contacts the inclined surface 5162 which gradually contracts, so as to form a self-locking effect, and the sealing performance of the water stop valve 51 is increased.

As shown in fig. 23 and 24, in some embodiments, a second detent 5164 is provided on the outside of the valve housing 5142, and a valve housing seal 5166 is provided within the second detent 5164.

As shown in fig. 2, the filter cartridge assembly according to the embodiment of the present invention further includes a second cover 13. The first cover 12 is covered at one end of the housing 1, and a first positioning member is arranged on the outer side surface of the housing 1. The second cover 13 is detachably mounted on the outer side of the first cover 12, and the second cover 13 is provided with a second positioning member, and the first positioning member and the second positioning member are in shape fit to limit rotation of the second cover 13.

According to the filter element assembly provided by the embodiment of the invention, the second cover body 13 is detachably arranged on the outer side of the first cover body 12, so that the second cover body 13 can be conveniently assembled, and the second cover body 13 can cover the first cover body 12, so that the whole structure is attractive and elegant, in addition, the first positioning piece and the second positioning piece can realize the positioning of the second cover body 13, and the second cover body 13 is prevented from rotating randomly, so that the stability of the structure is ensured.

It can be appreciated that, since the first positioning member is disposed on the housing 1 and the second positioning member is disposed on the second cover 13, the first cover 12 is mounted between the housing 1 and the second cover 13, and the first positioning member and the second positioning member cooperate to enable the housing 1 and the second cover 13 to exert a clamping force on the first cover 12, so that the mounting of the first cover 12 is more stable, and the structural stability of the whole filter element assembly is improved.

As shown in fig. 1, according to an embodiment of the present invention, the mounting portion 11 of the housing 1 further includes a third cover 14, and the third cover 14 is formed with a first water inlet 103, a first water outlet 104, a second water inlet 105, and a second water outlet 106. The third cover 14 is used to close the opening of the housing 1.

According to the embodiment of the present invention, the first cover 12 may be a cartridge end cap for closing the internal installation cavity of the housing 1, and the second cover 13 may be a decorative cover for decoration or the like, and the present invention is not particularly limited herein.

According to some embodiments of the present invention, the first positioning member and the second positioning member achieve a matching relationship through shape matching, for example, the first positioning member and the second positioning member may be a groove and protrusion matching structure, a hole and bolt matching structure, or the like, and the specific structures of the first positioning member and the second positioning member are not particularly limited in the present invention, so long as the first positioning member and the second positioning member can achieve shape matching.

As shown in fig. 1 and 27, in one embodiment of the present invention, the first positioning member is a positioning rib 15 extending along the length direction of the housing 1, and the second positioning member is a notch 131.

In another embodiment of the present invention, the first positioning member is a notch 131 extending along the length direction of the housing 1, and the second positioning member is a positioning rib 15.

In the above two embodiments, one of the first positioning member and the second positioning member may be the notch 131, and the other one is the positioning rib 15 that is matched with the notch 131, and an end of the positioning rib 15 facing the notch 131 is matched into the notch 131 to realize positioning and mounting of the second cover 13, so that the rotation of the second cover 13 is limited by the positioning rib 15, and positioning of the second cover 13 is ensured.

The longitudinal direction of the housing 1 is the direction of the height of the housing 1 when the housing 1 is vertically placed, and the first cover 12 and the second cover 13 are both attached to the end of the housing 1 with respect to the start and end of the housing 1.

As shown in fig. 1, according to an embodiment of the present invention, the housing 1 is a cylindrical housing 1, the first positioning member is a positioning rib 15 provided on the outer peripheral surface of the housing 1, the positioning rib 15 extends in the axial direction of the housing 1, and an end of the positioning rib 15 facing the first cover 12 is provided higher than an end of the housing 1. As shown in fig. 25 and 27, the first cover 12 and the second cover 13 are both disc-shaped, and the end of the second cover 13 facing the housing 1 is provided with a notch 131, and the notch 131 extends in the axial direction of the second cover 13, so that the portion of the positioning rib 15 that is higher than the end of the housing 1 can be fitted into the notch 131, thereby achieving positioning of the second cover 13.

The above embodiment is only one of many embodiments of the present invention, and the filter element assembly of the present invention is not limited thereto, and the housing 1, the first cover 12, and the second cover 13 may have various shapes such as a prism shape and a rectangular parallelepiped shape.

According to one embodiment of the present invention, the notch 131 is a "T" shaped notch 131, and the end of the positioning rib 15 facing the notch 131 is "T" shaped.

Like this, when the spacer 15 is fitted into the notch 131, the "T" shaped fitting structure not only can limit the rotation of the second cover 13, but also can limit the second cover 13 in the length direction of the housing 1, that is, limit the falling of the second cover 13, so that the positioning and mounting of the second cover 13 in two directions are realized through a set of "T" shaped fitting structures, and the structure is simpler. For example, the notch 131 includes a first notch 131 section with a smaller width and a second notch 131 section with a larger width, wherein the first notch 131 section is open and located on a side of the second notch 131 section adjacent to the positioning rib 15, and an end of the positioning rib 15 facing the notch 131 is in shape fit with the notch 131.

It should be noted that, the notch 131 and the positioning rib 15 may not only be configured as a T-shaped structure, but also the notch 131 and the positioning rib 15 may be configured as a structure with a groove and a hook, and the above structure may also realize positioning of the second cover 13 in two directions.

According to one embodiment of the present invention, the first cover 12 is provided with a third positioning member, the second cover 13 is further provided with a fourth positioning member, and the third positioning member cooperates with the fourth positioning member to limit the sliding of the second cover 13 along the length direction of the housing 1.

In this way, the second cover 13 is limited to rotate by the cooperation of the first positioning piece and the second positioning piece, and the second housing 1 is limited to slide by the cooperation of the third positioning piece and the fourth positioning piece, so that the second cover 13 is more firmly installed, and the second cover 13 is prevented from rotating or sliding. For example, the third positioning member and the fourth positioning member may be a fastening structure, a hook slot structure, or the like, which is not particularly limited herein.

According to another embodiment of the present invention, the third positioning member may also be provided on the housing 1, so that the clamping effect of the second cover 13 and the housing 1 on the first cover 12 is more prominent, and further structural stability is improved.

As shown in fig. 25 and 29, according to an embodiment of the present invention, the third positioning member is a circular arc-shaped first rib 121, and the first rib 121 extends along the outer edge of the first cover 12. The fourth positioning piece is an arc-shaped second convex rib 132, the second convex rib 132 is arranged on the inner surface of the second cover body 13 and is parallel to the first convex rib 121, and the first convex rib 121 and the second convex rib 132 are mutually buckled.

Thus, the structure is simple and the assembly is convenient, and the first ribs 121 and the second ribs 132 which are parallel to each other can ensure that the buckling between the first cover body 12 and the second cover body 13 is more compact. For example, the first cover 12 and the second cover 13 each have a disk shape, the first bead 121 extends along the outer peripheral surface of the first cover 12, and the second bead 132 extends along the inner peripheral surface of the second cover 13.

As shown in fig. 25 and 29, in one embodiment of the present invention, the first ribs 121 and the second ribs 132 are respectively in a plurality of groups corresponding to each other, all the first ribs 121 are disposed at intervals along the outer edge of the first cover 12 and are located at the same height of the first cover 12, and all the second ribs 132 are located at the same height of the second cover 13.

In another embodiment of the present invention, the first ribs 121 and the second ribs 132 are respectively circular.

As shown in fig. 25 and 29, according to an embodiment of the present invention, the first rib 121 is formed with a first guide surface 122, and the second rib 132 is formed with a second guide surface 133, and the first guide surface 122 and the second guide surface 133 are adapted to cooperate with each other to guide the installation of the first cover 12 and the second cover 13.

In the present embodiment, during the assembly of the first cover 12 and the second cover 13, the first guide surface 122 and the second guide surface 133 are first contacted, and then the first rib 121 and the second rib 132 are close to each other under the guiding action of the first guide surface 122 and the second guide surface 133 until the first rib 121 and the second rib 132 are buckled. In this way, the first guide surface 122 and the second guide surface 133 may guide the fastening process of the first rib 121 and the second rib 132, so that the first rib 121 and the second rib 132 are fastened more smoothly.

As shown in fig. 25 and 29, in one embodiment of the present invention, the first guide surface 122 is formed on a side of the first rib 121 facing the second cover 13, the second guide surface 133 is formed on a side of the second rib 132 facing the first cover 12, and both the first guide surface 122 and the second guide surface 133 are inclined surfaces. For example, a first guide surface 122 is formed at an upper side of the first rib 121, the first guide surface 122 extends upward from a free end of the first rib 121 toward a fixed end thereof, a second guide surface 133 is formed at a lower side of the second rib 132, and the second guide surface 133 extends downward from a free end of the second rib 132 toward a fixed end thereof.

According to one embodiment of the invention, the first guide surface 122 is angled at a to the horizontal, the second guide surface 133 is angled at B to the horizontal, and a and B are the sum of 90 °. In this way, the first guide surface 122 and the second guide surface 133 may be completely fitted to make the guiding process smoother.

As shown in fig. 2, the filter cartridge assembly further includes a handle portion 53, the handle portion 53 being rotatably coupled to the second cover 13, the second cover 13 being formed with a relief groove 134 adapted to receive the handle portion 53, in accordance with one embodiment of the present invention. Thus, when it is desired to install or remove the cartridge assembly from the purifier, a serviceman can lift or return the entire cartridge assembly via the handle 53.

In one embodiment of the invention, both the first cover 12 and the second cover 13 are provided with mounting holes (not shown) for the rotational connection of the handle portions 53, and the first cover 12 is also provided with grooves (not shown) adapted for the placement of the handle portions 53. The position of the recess corresponds to the position of the relief groove 134. Thus, the overall aesthetic property of the structure is stronger, and the filter element assembly is convenient to install in the water purifier.

It can be appreciated that, under the circumstance that the avoidance groove 134 is provided, the handle part 53 can be placed in the avoidance groove 134 when not in use, so that the space occupied by the handle part 53 is reduced, the volume of the filter element assembly is reduced, the structure of the water purifying device is more compact, and the water purifying device is beneficial to use in narrow spaces such as a kitchen.

As shown in fig. 2, according to some embodiments of the present invention, a sealing ring 52 is disposed between the water stop valve 51 and each water inlet and outlet, a sealing ring 52 is disposed between the first end cover 21 and the outer casing 1, a sealing ring 52 is disposed between the first inner casing 41 and the first end cover 21, a sealing ring 52 is disposed between the water outlet pipe section 311 of the second end cover 31 and the first inner casing 41, and the sealing ring 52 is disposed between the above assembly gaps, so that the sealing effect of the overall structure can be ensured, and water leakage from the accommodating cavity can be avoided.

A water purification device according to an embodiment of the second aspect of the present invention comprises a body and a cartridge assembly as in the first aspect of the present invention. The filter element component is arranged in the machine body.

The effect of the water purifying device according to the second aspect of the present invention is similar to that of the filter element assembly according to the first aspect of the present invention, and will not be described again.

The above embodiments are only for illustrating the present invention, and are not limiting of the present invention. While the invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and it is intended to be covered by the scope of the claims of the present invention.

Claims

1. A filter cartridge assembly, comprising:

the shell is provided with a containing cavity, one end of the shell is provided with a mounting part, the other end of the shell, which is far away from the mounting part, is open to form an open end, and the mounting part is provided with 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 inner shell assembly comprises a first inner shell and a second inner shell, the first inner shell is arranged in the first filtering component, the second inner shell is provided with an open end and a closed end, the open end of the second inner shell is sealed and sleeved at one end, far away from the installation part, of the first inner shell, the closed end of the second inner shell corresponds to the open end of the outer shell, the first cavity is formed between the inner wall of the outer shell and the outer wall of the inner shell assembly, and the second cavity is formed inside the inner shell assembly; the outer wall of the open end of the second inner shell is sealed with the inner wall of the outer shell through a sealing piece;

the first cover body is covered at the open end of the shell, and the second cover body is detachably sleeved at the outer side of the first cover body.

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

3. The filter cartridge assembly of claim 2, wherein a first support is disposed within the first flow passage, the first support abutting the first filter member and the housing;

4. The filter cartridge assembly of claim 3, wherein the first filter member comprises a first end cap and a hollow first filter cartridge, the first end cap being provided on a side of the first filter cartridge adjacent the mounting portion, the first end cap being formed with a first mounting groove adapted to mount the first filter cartridge;

5. The filter cartridge assembly of claim 3, wherein the first support member comprises a plurality of first support ribs spaced along an outer edge of the first filter member;

6. The filter cartridge assembly of claim 2, wherein a third support is disposed within the third flow passage, the third support abutting the inner housing assembly and the second filter member.

7. The filter cartridge assembly of claim 6, wherein the second filter member comprises a second end cap and a hollow second filter cartridge, the second end cap being disposed on a side of the second filter cartridge adjacent the mounting portion, and the second end cap being formed with a second mounting groove adapted to mount the second filter cartridge;

8. The filter cartridge assembly of claim 6, wherein the third support member includes a plurality of third support ribs spaced along the inner edge of the inner housing assembly.

9. The filter element assembly of claim 8, wherein the number of third support members is plural, each third support member including a plurality of third support ribs disposed at the same mounting height of the third flow passage, the plurality of third support members being disposed at intervals along different mounting heights of the third flow passage, respectively.

10. The filter cartridge assembly of any one of claims 1-9, wherein the first inner housing and the second inner housing are secured by spin welding.

11. A water purification apparatus comprising a body and a cartridge assembly according to any one of claims 1 to 10, the cartridge assembly being disposed within the body.