CN114405135A

CN114405135A - Filter element assembly and water purifying device

Info

Publication number: CN114405135A
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: 2022-04-29
Anticipated expiration: 2042-01-07
Also published as: CN114405135B

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 element assembly, comprising: a housing formed with an accommodation 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 part is arranged in the first cavity and is of a hollow structure; the second filtering part 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 is established in the one end of keeping away from the installation department of first inner shell. The filter element assembly provided by the invention is innovatively designed on the basis of the structure of the composite filter element, 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 is attracting much attention. Reverse osmosis water purification devices are becoming more popular because of the fresher, more sanitary and safer purified water produced by the devices. Tap water has higher solubility solid, and reverse osmosis filter element group spare can be under the effect of booster pump, and with the bulk ion of former aquatic stop in front of reverse osmosis membrane, and make the solubility solid of the water through reverse osmosis membrane accord with the standard of straight drinking water. In the correlation technique, purifier's leading filter element group spare and rearmounted filter element group spare set up separately, can realize the same or different filtering capability. When the user changes the filter element assembly, need to change these two filter element assemblies simultaneously, the operation is comparatively complicated.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a filter element assembly, wherein the first chamber and the second chamber are independent from each other, so that the filtering processes in the first chamber and the second chamber cannot influence each other. In addition, the inner shell structure composed of the first inner shell and the second inner shell has better tightness and is more convenient to assemble. In conclusion, the composite filter element is innovatively designed on the basis of the original composite structure of the composite filter element, the design of the internal composite structure is optimized, the cost and the manufacturability are optimized, and the reliability is improved.

The invention also provides a water purifying device.

A filter element assembly according to an embodiment of the first aspect of the invention, comprising:

the water inlet and outlet device comprises a shell, a water inlet and outlet, a water outlet and a water inlet and outlet, wherein a containing cavity is formed in the shell, a mounting part is arranged at one end of the shell, and a first water inlet, a first water outlet, a second water inlet and a second water outlet which are communicated with the containing cavity are formed in the mounting part;

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

the second filtering part 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, first inner shell set up in the first filter element, the second inner shell has open end and blind end, the open end sealing cover of second inner shell is established keep away from of first inner shell the one end of installation department, the inner wall of shell with be formed with between the outer wall of inner shell subassembly first cavity, the inside of inner shell subassembly is formed with the second cavity.

According to the filter element assembly disclosed by the embodiment of the invention, the accommodating cavity is divided into the first cavity and the second cavity by the inner shell assembly, 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 from the second water outlet, and thus the first chamber and the second chamber are independent from each other, so that the filtering processes in the respective chambers cannot be influenced by each other. In addition, the inner shell structure composed of the first inner shell and the second inner shell has better tightness and is more convenient to assemble. In conclusion, the composite filter element is innovatively designed on the basis of the original composite structure of the composite filter element, the design of the internal composite structure is optimized, the cost and the manufacturability are optimized, and the reliability is improved.

According to an 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 shell assembly and the second filter element, a fourth flow passage is formed inside the second filter element, 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 an embodiment of the invention, a first support member is arranged in the first flow passage, and the first support member is abutted against the first filtering part and the shell;

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

According to one embodiment of the invention, the first filter part comprises a first end cover and a hollow first filter element, the first end cover is arranged on one side of the first filter element close to the mounting part, and a first mounting groove suitable for mounting the first filter element is formed in the first end cover;

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

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

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

According to an embodiment of the invention, a third support member is arranged in the third flow channel, and the third support member abuts against the inner shell assembly and the second filter element.

According to an embodiment of the present invention, the second filter member includes a second end cap and a hollow second filter element, the second end cap is disposed on a side of the second filter element adjacent to the mounting portion, and the second end cap is formed with a second mounting groove adapted to mount the second filter element;

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

the second end cap and the third support member are integrally formed, or the first inner shell and the third support member are integrally formed.

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

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

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

According to an 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 a seal.

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

the first cover body covers one end of the shell, which is far away from the mounting portion, and the second cover body is detachably sleeved on the outer side of the first cover body.

According to a second aspect of the invention, a water purification apparatus comprises a housing and a filter element assembly according to the first aspect of the invention, the filter element assembly being disposed in the housing.

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 present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

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

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

FIG. 3 is a schematic structural diagram of a filter element assembly provided by 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 water flow within a filter cartridge assembly provided by an embodiment of the present invention;

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

FIG. 7 is a schematic structural diagram of a housing provided by 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 view of a filter element assembly with a housing removed according to an embodiment of the present invention;

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 endcap provided in accordance with an embodiment of the present invention;

FIG. 13 is a cross-sectional view of a first endcap provided in accordance with an embodiment of the present invention;

fig. 14 is a perspective view of a first inner case provided in an embodiment of the present invention;

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

fig. 16 is a perspective view of a second inner case provided in accordance with an embodiment of the present invention;

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

FIG. 18 is a schematic structural view of an inner shell assembly provided by an embodiment of the present invention;

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

FIG. 20 is a perspective view of a second endcap provided in accordance with an embodiment of the present invention;

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

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

FIG. 23 is an exploded view of a water stop valve provided in accordance with 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 perspective view of a first cover according to an embodiment of the present invention;

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

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

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

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

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

Reference numerals:

1. a housing; 11. an installation part; 12. a first cover body; 121. a first rib; 122. a first guide surface; 13. a second cover body; 131. a notch; 132. a second rib; 133. a second guide surface; 134. an avoidance groove; 14. a third cover body; 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 path; 110. a fourth flow path; 21. a first end cap; 211. a first support member; 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 member; 315. a second mounting groove; 32. a second filter element; 33. a third end cap; 41. a first inner case; 411. a first portion; 412. a second portion; 413. a second support member; 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 contact pressing piece; 5152. a reinforcing portion; 5154. a first guide member; 5156. a second guide member; 5158. a first positioning groove; 5160. a spool seal; 5162. an inclined surface; 5164. a second positioning groove; 5166. a valve housing sealing member; 5168. a blocking portion.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate 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", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, 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 the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

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

As shown in fig. 1 to 30, a filter 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 holding cavity (not shown in the figure), 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 which are communicated with the holding cavity.

The inner shell subassembly is located and is held the intracavity, and the inner shell subassembly is suitable for will holding the chamber and divide into first cavity 101 and second cavity 102, and first water inlet 103 and first delivery port 104 communicate with first cavity 101, and second delivery port 106 and second delivery port 105 communicate with second cavity 102.

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

Wherein, the inner shell subassembly includes first inner shell 41 and second inner shell 42, and first inner shell 41 sets up in first filter element, and second inner shell 42 has open end and closed end, and the open end sealing cover of second inner shell 42 is established in the one end of keeping away from installation department 11 of first inner shell 41, is formed with first cavity 101 between the inner wall of shell 1 and the outer wall of inner shell subassembly, and the inside of inner shell subassembly is formed with second cavity 102.

According to the filter element assembly provided by 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 filter member, 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 the filtering processes in the respective chambers do not affect each other. In addition, the inner shell structure formed by the first inner shell 41 and the second inner shell 42 has better tightness and is more convenient to assemble. In conclusion, the composite filter element is innovatively designed on the basis of the original composite structure of the composite filter element, the design of the internal composite structure is optimized, the cost and the manufacturability are optimized, and the reliability is improved.

According to an embodiment of the present invention, the above-mentioned "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 "second chamber 102 is formed inside the inner housing assembly" as described above, that is, the inner wall of the first inner housing 41 and the inner wall of the second inner housing 42 jointly define the second chamber 102.

According to the embodiment of the present invention, a receiving cavity is formed in the housing 1, and the receiving cavity is used for placing the first filter element and the second filter element, and in order to ensure that the first filter element and the second filter element have larger size and filter path, the housing 1 has a rectangular parallelepiped structure or a cylindrical structure.

In some embodiments, the housing 1 may also be a special-shaped structure, so that the housing 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 the embodiment of the present invention, a mounting portion 11 is provided at one end of a housing 1, 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 purification apparatus. The mounting part 11 and the housing 1 can be integrally formed, and the end part of the housing 1 protrudes outwards to form the mounting part 11, so that the housing 1 is better in sealing performance and lower in manufacturing cost. Or, the mounting part 11 and the housing 1 may also be mutually independent parts, the mounting part 11 is mounted on the housing 1 through a locking member, and the two parts are connected in a sealing manner, so that the housing 1 and the mounting part 11 are independent bodies, and the assembly of the internal structure of the filter element assembly is facilitated.

In the correlation technique, purifier's leading filter element group spare and rearmounted filter element group spare set up separately, can realize the same or different filtering capability. When the user changes the filter element assembly, need to change these two filter element assemblies simultaneously, the operation is comparatively complicated.

In order to solve the above technical problem, according to the filter element assembly provided by the embodiment of the present invention, two independent filter elements, namely a first filter element and a second filter element, are disposed in the accommodating cavity, and the first filter element and the second filter element can achieve the same or different filter functions. According to the invention, the first filter component and the second filter component are integrated in the filter element component, so that the front and rear composite filter elements are formed, and thus, when a user needs to replace the filter element component, the user can meet the use requirement only by replacing the filter element component 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 passage 107 is in fluid communication with one of the first water inlet 103 and the first water outlet 104, and the second flow passage 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 inside the second filter member, the third flow passage 109 is fluidly connected to one of the second water inlet 105 and the second water outlet 106, and the fourth flow passage 110 is fluidly connected to 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 water in the first chamber 101 and the water in the second chamber 102 are isolated from each other when flowing through, 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 domestic water and the second filter element may filter drinking water.

As shown in fig. 4 and 5, in one embodiment of the invention, the circulation of the water flow in the containing 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 filtering component, the first filtering 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 from the first water outlet 104 for users 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 channel 109 and is filtered by the second filter element, the second filter element filters the pure water to obtain drinking water, the drinking water flows to the second water outlet 106 along the fourth flow channel 110, and then the drinking water flows out from the second water outlet 106 to be drunk by a user.

It should be noted that, in the circulation process of the water flow in the accommodating chamber, due to the separation of the inner shell assembly, the water filtering process in the first chamber 101 and the water filtering process in the second chamber 102 do not affect each other, a user can filter water by using the first filtering component or the second filtering component according to his own needs, and the user can also inject water into the first water inlet 103 and the second water inlet 105 at the same time, so that the first filtering component and the second filtering component work at the same time.

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

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

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

As shown in fig. 4, according to an embodiment of the present invention, a second supporting member 413 is disposed in the second flow passage 108, and the second supporting member 413 abuts against the first filter member and the first inner housing 41.

In this embodiment, the second supporting element 413 is used for supporting the flowing space in the second flow channel 108, that is, the second supporting element 413 can maintain the distance between the first filtering element and the first inner casing 41, so as to maintain the water flowing capacity of the second flow channel 108 and avoid the pipe blockage phenomenon after long-term use.

In some embodiments of the present invention, the second supporting member 413 may be a button, a protrusion, a beam, etc., and the present invention is not particularly limited thereto, as long as the second supporting member 413 can support the gap between the first filter element and the first inner housing 41. In addition, the second supporting member 413 may be a single part independent from the first filter element or the first inner housing 41, and the second supporting member 413 may also be a structure integrally formed with the first filter element or the first inner housing 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 element 22, the first filter element 22 has a hollow structure, the first end cap 21 is disposed on a side of the first filter element 22 close to the mounting portion 11, and the first end cap 21 is formed with a first mounting groove 212 adapted to mount the first filter element 22.

In this embodiment, the first filter element 22 functions to filter water, and the first end cap 21 can be used to fixedly position the first filter element 22, so that the first filter element 22 is fixed outside the first inner housing 41. The end 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, thereby avoiding the deformation and loosening of the first filter element 22 under the action of water pressure, and facilitating the improvement of the filtering capacity of the first filtering component.

In an 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 particles of impurities such as silt, iron filings, etc. in water, and the carbon rod can effectively adsorb impurities such as peculiar smell, color, residual chlorine, etc., 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 passes through the through hole in the middle of the first end cap 21 and then communicates with the second water inlet 105 and the second water outlet 106, the first filter element 22 is an annular filter element, and the first filter element 22 is installed in the annular first installation groove 212. In this way, the first end cap 21 can simultaneously achieve the installation positioning of the first filter cartridge 22 and the installation 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 member 211, or the inner wall of the housing 1 is protruded toward the first cartridge 22 to form the first support member 211. Thus, there is no need to worry about the problem of assembling the first support 211, and the stability is stronger. For example, the first supporting member 211 is a protrusion formed on the outer periphery of the first end cap 21, and the free end of the first supporting member 211 abuts against the inner wall of the housing 1.

As shown in fig. 14, in an 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 protrudes toward the first filter element 22 to form the second support 413, and a free end of the second support 413 abuts against an inner wall of the first filter element 22 or the first end cap 21. Alternatively, the first end cap 21 and the second support piece 413 are integrally formed, for example, the inner wall of the first end cap 21 protrudes toward the first inner housing 41 to form the second support piece 413, and the free end of the second support piece 413 abuts against the outer wall of the first inner housing 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), which are spaced along an outer edge of the first filter element. Like this, the smooth circulation of rivers in first runner 107 can also be guaranteed to a plurality of first support muscle that the interval set up when satisfying supporting role, reduces first support piece 211 to the resistance that rivers flow. Further, the plurality of first support ribs arranged 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 supporting member 413 includes a plurality of second supporting ribs (not shown), which are spaced along an outer edge of the first inner case 41. Like this, a plurality of second brace rods that the interval set up can also guarantee the smooth circulation of rivers in the second runner 108 when satisfying the supporting role, reduce second support piece 413 to the resistance that rivers flow. In addition, the plurality of second support ribs arranged in the annular direction can also ensure that each region in the circumferential direction of the second flow channel 108 can be supported.

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

In this embodiment, the third supporting member 314 is used to support the flowing space in the third flow channel 109, that is, the third supporting member 314 can maintain the distance between the second filtering member and the inner shell assembly, so as to maintain the water flowing capacity of the third flow channel 109 and avoid the pipe blockage phenomenon after long-term use.

In some embodiments of the present invention, the third supporting member 314 may be a button, a protrusion, a beam, etc., and the present invention is not particularly limited thereto, as long as the third supporting member 314 can support the gap between the second filter element and the inner shell assembly. In addition, the third support 314 may be a single part independent from the second filter element or the inner housing assembly, and the first support 211 may also be a structure integrally formed with the second filter element or the inner housing assembly.

As shown in fig. 11, according to one embodiment of the present invention, the second filter member includes a second end cap 31 and a second filter cartridge 32. The second filter element 32 is a hollow structure, the second end cap 31 is disposed on one side of the second filter element 32 close to the mounting portion 11, and the second end cap 31 is formed with a second mounting groove 315 suitable for mounting the second filter element 32.

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

In the present embodiment, the third flow channel 109 is defined between the first inner casing 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 circulation 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 channel 109 between the first inner housing 41 and the second end cap 31, then the water flows into and is filtered by the second filter element 32, the filtered water flows are gathered in the inner hollow area 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 from the second water outlet 106.

In an embodiment of the present invention, the second filter element 32 may be composed of a carbon rod, etc., and the taste of the pure water generated by the reverse osmosis filter element is obviously improved after being 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 cap body section 312, and a water outlet pipe section 311, which are sequentially disposed. The first inner housing 41 is a hollow T-shaped pipe, the first inner housing 41 includes a first portion 411 with a smaller diameter and a second portion 412 with a larger diameter, the first portion 411 of the first inner housing 41 is sleeved inside the first filter element 22, and the first portion 411 is sleeved inside the water outlet pipe section 311 of the first end cover 21. The second portion 412 of the first inner housing 41 is capped at the cap 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 inner portion of the second filter element 32 is sleeved with a water inlet pipe section 313 of the first end cover 21. The third flow channel 109 is formed between the inner wall of the first inner casing 41 and the outer wall of the water inlet pipe section 313 of the second end cap 31 and the outer wall of the cap body 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 supporter 314, or the first inner case 41 is integrally formed with the third supporter 314. For example, the outer wall of the second end cap 31 protrudes toward the first inner case 41 to form the third supporter 314, or the inner wall of the first inner case 41 protrudes toward the second end cap 31 to form the third supporter 314.

Thus, the assembling process of the third supporting member 314 is omitted, and the influence of the impact of the water flow on the supporting effect of the third supporting member 314 can be avoided, and the structural stability is stronger.

As shown in fig. 20, according to an embodiment of the present invention, the third supporting member 314 includes a plurality of third supporting ribs (not shown) spaced along an inner edge of the inner housing assembly. Thus, the third support ribs arranged at intervals can satisfy the support function, and meanwhile, the smooth circulation of water flow in the third flow channel 109 can be ensured, and the resistance of the third support member 314 to the flow of water flow is reduced. In addition, the plurality of third support ribs arranged in the annular direction can also ensure that each region in the circumferential direction of the third flow channel 109 can be supported.

According to an embodiment of the present invention, the number of the third supporting members 314 is multiple, each of the third supporting members 314 includes a plurality of third supporting ribs disposed at the same installation height of the third flow channel 109, and the plurality of third supporting members 314 are respectively disposed at intervals along different installation heights of the third flow channel 109. Thus, the plurality of third supporting members 314 are provided in the flow direction of the third flow channel 109, so that each region in the flow direction of the third flow channel 109 can be supported, and further the third flow channel 109 can be prevented from being blocked.

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 of the inner side of the second inner housing 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 jointly play a positioning and installing role for the second filter element 32, so that the installation of the second filter element 32 is more stable.

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, the connection mode of the internal conversion position is changed from connection by the sealing ring 52 to spin welding, so that the reliability of the structure can be greatly improved, the sealing performance between the first chamber 101 and the second chamber 102 is ensured, and the stable combination of the first filter component and the second filter component is realized.

As shown in fig. 4, according to one embodiment of the present invention, a detachable first cover 12 is provided at one end of the outer case 1 adjacent to the second inner case 42. When the first cover 12 is opened, the first filter element, the second filter element and the inner shell assembly can be placed in the accommodating cavity, the first cover 12 is fixed to the outer shell 1, and the first filter element, the second filter element and the inner shell assembly can be blocked in the accommodating cavity.

According to one embodiment of the invention, the outer wall of the open end of the second inner housing 42 is sealed to the inner wall of the outer housing 1 by a seal (not shown). Thus, the water flow can be prevented from flowing into the vicinity of the first cover 12 through the gap between the second inner shell 42 and the outer shell 1, thereby preventing the water flow from leaking at the first cover 12 and enhancing the sealing performance of the whole structure. For example, the sealing member may be a rubber gasket.

As shown in fig. 2, according to the filter cartridge assembly provided by the embodiment of the present invention, the first water inlet 103, the first water outlet 104, the second water inlet 105 and the second water outlet 106 are all provided with the water stop valve 51 therein, 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 in normal operation of the filter element assembly, the water stop valve 51 is in the open position under the influence of the other support structure, the first water inlet 103 receives tap water from the outside, and the first filter element filters the tap water to form domestic water which is then discharged along the first water outlet 104. The second water inlet 105 receives pure water filtered by the reverse osmosis cartridge, 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 use by a user. 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 the water blocking state, and residual water in the filter element assembly cannot leak, so that the cabinet is prevented from being polluted or the residual water is prevented from being scattered on the body of a user, and the filter element assembly is cleaner and more sanitary and more convenient.

As shown in fig. 2, the water stop valve 51 is located at the installation part 11, and the filter element assembly needs to be detached to avoid touching the water stop valve 51, 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 cap 5144, a valve core 5146, and a resilient member 5148.

The valve housing 5142 has a hollow structure, which may be 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 core 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 and the valve housing 5142 are combined to form a semi-closed chamber. A spool 5146 is provided in the valve housing 5142, and the spool 5146 is located at a position between the valve cover 5144 and the blocking portion 5168.

It is understood that the valve core 5146 is restricted in an area between the valve cap 5144 and the blocking portion 5168 after being installed in the valve housing 5142, and does not escape from the valve housing 5142. In order to ensure the liquid circulation, the valve cap 5144 is further provided with a water through hole (not shown), along which the liquid can circulate in the water guiding state.

As shown in fig. 23 and 24, an elastic member 5148 is provided in the valve housing 5142, and one end of the elastic member 5148 is connected to the valve cap 5144 and the other end thereof is connected to the valve element 5146, so that the valve element 5146 can move away from the valve cap 5144. When only the elastic member 5148 acts, the valve element 5146 abuts against the blocking portion 5168, and can block the water flow, and the water stop valve 51 is in the closed position. When a force is applied to the spool 5146, the elastic member 5148 is compressed, and the spool 5146 is away from the position of the blocking portion 5168, and the water stop valve 51 is in the open position. Accordingly, the elastic member 5148 may 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 can be understood that when the cartridge assembly is connected to the body of the water purifying apparatus, the structure inside the body can support the valve element 5146, so that the cartridge assembly is in a water guiding state. When the filter element assembly is detached, the acting force exerted on the valve core 5146 is cancelled, the valve core 5146 is abutted against the blocking part 5168 under the action of the elastic part 5148, so that the filter element assembly is in a water blocking state, residual water in the filter element assembly cannot be leaked, and the cleanness and sanitation of the filter element assembly are improved.

It is understood that the elastic member 5148 may be a spring, a steel plate, or the like.

As shown in fig. 23 and 24, in some embodiments, a side of the valve core 5146 facing away from the elastic member 5148 is provided with a contact member 5150, and the contact member 5150 is inserted into the blocking portion 5168.

It will be appreciated that the contact element 5150 can apply a force to the spool 5146, and the contact element 5150 can be disposed on the spool 5146 to facilitate 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 contact pressing piece 5150, and effective communication between the filter element assembly and the machine body is ensured. Simultaneously touch casting die 5150 has also reduced the butt joint degree of difficulty of filter element group spare with the organism, installs the filter element group spare corresponding position after, connecting pipe on the organism and touch casting die 5150 automatic butt joint do not need proofreading and correct the position many times, it is more convenient during the use.

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

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

When the spool 5146 abuts against the stopper 5168, the water stop valve 51 is in the closed position and in the water 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, and the first guide 5154 is slidably coupled to the second guide 5156.

The first guide 5154 has opposite ends, and one end of the first guide 5154 is connected to the cap 5144 and the other end extends in a direction in which the spool 5146 is located. The second guide 5156 has opposite ends, and one end of the second guide 5156 is connected to the spool 5146 and the other end extends in a direction in which the valve cap 5144 is located. The sliding connection of the first guide 5154 and the second guide 5156 can ensure that the spool 5146 is stable during movement.

It can be understood that the first guide 5154 and the second guide 5156 can relatively slide along a linear direction, and when the spool 5146 is far away from or close to the blocking portion 5168, no shaking or position deviation occurs, and the spool can precisely 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 cooperate with each other to ensure that the two stably slide.

In some embodiments, one of the first guide 5154 and the second guide 5156 is provided with a guide hole, and the other 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 mutually matched to ensure that the two stably slide.

It can be 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 cap 5144, the elastic member 5148 is sleeved outside the first guide member 5154, and the elastic member 5148 applies a force to the centers of the valve cap 5144 and the valve element 5146, so that the movement of the valve element 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 spool 5146 and the valve cap 5144, so that the spool 5146 can be uniformly and uniformly applied with force.

When the valve element 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 sealing performance between the valve element 5146 and the blocking portion 5168 determines the sealing performance of the water stop valve 51.

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

It can be understood that the valve plug sealing member 5160 is made of plastic or silicone, and in the water blocking state, the valve plug sealing member 5160 abuts against the blocking portion 5168 to prevent the liquid from flowing in the valve housing 5142. The spool seal 5160 has elasticity, and deforms under the action of the elastic member 5148, so as to be 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, a side of the blocking portion 5168 adjacent to the spool 5146 is formed with a gradually expanding inclined surface 5162 toward a direction in which the elastic member 5148 is compressed.

It can be understood that, in the water-flowing state, the spool 5146 is disengaged from the blocking portion 5168, a flow passage is formed therebetween, and the liquid flows in the valve housing 5142. The inclined surface 5162 can shorten the flow path of the liquid and reduce the resistance to the flow of the liquid, thereby facilitating the passage of the liquid in the valve housing 5142 and the throughput of the filter element assembly.

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

As shown in fig. 23 and 24, in some embodiments, a second positioning groove 5164 is provided at an outer side of the valve housing 5142, and a valve housing sealing member 5166 is provided in the second positioning groove 5164.

As shown in fig. 2, the filter element assembly according to the embodiment of the present invention further includes a second cover 13. The first cover 12 covers one end of the housing 1, and a first positioning member is disposed on an 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 element, and the first positioning element and the second positioning element are matched in shape to limit the 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, the second cover body 13 can cover the first cover body 12, 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, the second cover body 13 is prevented from being rotated randomly, and the stability of the structure is ensured.

It can be understood that, because the first positioning element is established on the shell 1 and the second positioning element is established on the second cover body 13, the first cover body 12 is installed between the shell 1 and the second cover body 13, then the cooperation of the first positioning element and the second positioning element can make the shell 1 and the second cover body 13 play an acting force for clamping the first cover body 12, thereby making the installation of the first cover body 12 more stable, and improving the structural stability of the whole filter element assembly.

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 an embodiment of the present invention, the first cover 12 may be a filter end cap for closing the installation cavity inside the housing 1, and the second cover 13 may be a decoration cover for decoration, and the present invention is not limited thereto.

According to some embodiments of the present invention, the first positioning element and the second positioning element are matched in shape, for example, the first positioning element and the second positioning element may be a matching structure of a groove and a protrusion, a matching structure of a hole and a pin, and the like.

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 two embodiments, one of the first positioning element and the second positioning element may be the notch 131, and the other one of the first positioning element and the second positioning element is the positioning rib 15 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 installation of the second cover 13, so that the positioning rib 15 limits rotation of the second cover 13, thereby ensuring positioning of the second cover 13.

The longitudinal direction of the housing 1 is relative to the starting end and the end of the housing 1, and both the first cover 12 and the second cover 13 are mounted on the end of the housing 1, and if the housing 1 is vertically placed, the longitudinal direction is the height direction 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 an outer peripheral surface of the housing 1, the positioning rib 15 extends in an 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 one end of the second cover 13 facing the housing 1 is provided with a notch 131, and the notch 131 extends along the axial direction of the second cover 13, so that the part of the positioning rib 15 higher than the end of the housing 1 can be fitted into the notch 131, thereby positioning the second cover 13.

It should be noted that the above-mentioned embodiment is only one of many embodiments of the present invention, and does not limit the filter element assembly of the present invention, and the housing 1, the first cover 12 and the second cover 13 may have various structural shapes such as a prism shape, a rectangular parallelepiped shape, etc., and the present invention is not limited in particular herein.

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 location muscle 15 cooperation to the breach 131 in, the cooperation structure of "T" shape not only can restrict the rotation of second lid 13, can also play limiting displacement to second lid 13 in the length direction of shell 1, also restricts falling of second lid 13 to realized the location installation of second lid 13 in two directions through a set of "T" shape cooperation structure, 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 one 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 matched with the notch 131 in shape.

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 matching the slot and the hook, and the above structure may also realize the positioning of the second cover 13 in two directions.

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

In this way, the rotation of the second cover 13 is limited by the cooperation of the first positioning element and the second positioning element, and the sliding of the second housing 1 is limited by the cooperation of the third positioning element and the fourth positioning element, so that the second cover 13 is more firmly mounted, and the second cover 13 is prevented from rotating or sliding. For example, the third positioning element and the fourth positioning element may be a fastening structure, a hook-and-slot structure, etc., and the present invention is not limited thereto.

According to another embodiment of the present invention, a third positioning element may be further disposed 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 the structural stability is further improved.

As shown in fig. 25 and 29, according to an embodiment of the present invention, the third positioning member is a first rib 121 having a circular arc shape, and the first rib 121 extends along the outer edge of the first cover 12. The fourth positioning member is an arc-shaped second rib 132, the second rib 132 is disposed on the inner surface of the second cover 13 and parallel to the first rib 121, and the first rib 121 and the second rib 132 are fastened to each other.

Thus, the structure is simple and convenient to assemble, and the first rib 121 and the second rib 132 which are parallel to each other can ensure that the first cover 12 and the second cover 13 are fastened more tightly. For example, the first cover 12 and the second cover 13 are both disc-shaped, and the first rib 121 extends along the outer peripheral surface of the first cover 12, and the second rib 132 extends along the inner peripheral surface of the second cover 13.

As shown in fig. 25 and 29, in an embodiment of the present invention, the first ribs 121 and the second ribs 132 are respectively 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 all 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 rib 121 and the second rib 132 are respectively formed in a circular ring shape.

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, 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 this embodiment, during the process of assembling the first cover 12 and the second cover 13, the first guide surface 122 and the second guide surface 133 contact first, and then under the guiding action of the first guide surface 122 and the second guide surface 133, the first rib 121 and the second rib 132 approach each other 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 can guide the fastening process of the first rib 121 and the second rib 132, so that the fastening process of the first rib 121 and the second rib 132 is smoother.

As shown in fig. 25 and 29, in one embodiment of the present invention, the first guide surface 122 is formed on the side of the first rib 121 facing the second cover 13, the second guide surface 133 is formed on the 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, the first guide surface 122 is formed on 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, the second guide surface 133 is formed on 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 guiding surface 122 is at an angle a to the horizontal, the second guiding surface 133 is at an angle B to the horizontal, and a and B are summed to a value of 90 °. In this way, the first guide surface 122 and the second guide surface 133 can be completely attached to make the guiding process more smooth.

As shown in fig. 2, according to an embodiment of the present invention, the filter element assembly further includes a handle portion 53, the handle portion 53 is rotatably connected to the second cover 13, and the second cover 13 is formed with an escape groove 134 adapted to receive the handle portion 53. Thus, when the filter element assembly needs to be installed or detached from the water purifier, a maintenance worker can lift out or return the whole filter element assembly through the handle part 53.

In one embodiment of the present invention, the first cover 12 and the second cover 13 are provided with mounting holes (not shown) for rotatably connecting the handle portion 53, and the first cover 12 is also provided with a groove (not shown) adapted to receive the handle portion 53. The position of the groove corresponds to the position of the escape groove 134. Like this, the holistic aesthetic property of structure is stronger to make things convenient for the filter element group spare to install in the water purifier.

It can be understood that under the condition that is provided with and dodges groove 134, handle portion 53 can be placed in dodging groove 134 when not in use, has reduced the space that handle portion 53 occupy, is favorable to dwindling the volume of filter element group spare, can make purifier's structure compacter, is favorable to purifier in the use in narrow and small spaces such as 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/outlet, a sealing ring 52 is disposed between the first end cap 21 and the outer shell 1, a sealing ring 52 is disposed between the first inner shell 41 and the first end cap 21, and a sealing ring 52 is disposed between the water outlet pipe 311 of the second end cap 31 and the first inner shell 41, and the sealing rings 52 between the above-mentioned assembly gaps can ensure the sealing effect of the whole structure and prevent water from leaking from the accommodating cavity.

According to a second aspect of the invention, a water purification apparatus comprises a housing and a filter element assembly according to the first aspect of the invention. The filter element assembly is arranged in the machine body.

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

The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.

Claims

1. A filter element assembly, comprising:

2. The filter element assembly according to 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 element assembly according to claim 2, wherein a first support is provided in said first flow passage, said first support abutting said first filter element and said housing;

4. The filter element assembly according to claim 3, wherein the first filter element comprises a first end cap and a hollow first filter element, the first end cap is arranged on one side of the first filter element close to the mounting part, and the first end cap is provided with a first mounting groove suitable for mounting the first filter element;

5. The filter element assembly according to claim 3, wherein said first support comprises a plurality of first support ribs spaced along an outer edge of said first filter element;

6. The filter element assembly according to claim 2, wherein a third support member is provided in the third flow passage, the third support member abutting the inner housing assembly and the second filter member.

7. The filter element assembly according to claim 6, wherein the second filter element comprises a second end cap and a hollow second filter element, the second end cap is arranged on one side of the second filter element close to the mounting part, and the second end cap is provided with a second mounting groove suitable for mounting the second filter element;

8. The filter element assembly according to claim 6, wherein said third support member includes a plurality of third support ribs spaced along an inner edge of said inner housing assembly.

9. The filter element assembly according to claim 8, wherein the number of the third supporting members is plural, each third supporting member includes a plurality of the third supporting ribs provided at the same installation height of the third flow passage, and the plurality of the third supporting members are respectively provided at intervals along different installation heights of the third flow passage.

10. The filter element assembly according to any one of claims 1 to 9, wherein the first inner housing and the second inner housing are fixed by spin welding.

11. The filter element assembly according to any one of claims 1 to 9, wherein the outer wall of the open end of the second inner housing is sealed from the inner wall of the outer housing by a seal.

12. The filter element assembly according to any one of claims 1 to 9, further comprising:

13. A water purification apparatus comprising a housing and a filter element assembly as claimed in any one of claims 1 to 12, the filter element assembly being disposed within the housing.